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459 lines
25 KiB
C++
459 lines
25 KiB
C++
/*#******************************************************************************
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** IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
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**
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** By downloading, copying, installing or using the software you agree to this license.
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** If you do not agree to this license, do not download, install,
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** copy or use the software.
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**
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**
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** HVStools : interfaces allowing OpenCV users to integrate Human Vision System models. Presented models originate from Jeanny Herault's original research and have been reused and adapted by the author&collaborators for computed vision applications since his thesis with Alice Caplier at Gipsa-Lab.
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** Use: extract still images & image sequences features, from contours details to motion spatio-temporal features, etc. for high level visual scene analysis. Also contribute to image enhancement/compression such as tone mapping.
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**
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** Maintainers : Listic lab (code author current affiliation & applications) and Gipsa Lab (original research origins & applications)
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**
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** Creation - enhancement process 2007-2011
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** Author: Alexandre Benoit (benoit.alexandre.vision@gmail.com), LISTIC lab, Annecy le vieux, France
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**
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** Theses algorithm have been developped by Alexandre BENOIT since his thesis with Alice Caplier at Gipsa-Lab (www.gipsa-lab.inpg.fr) and the research he pursues at LISTIC Lab (www.listic.univ-savoie.fr).
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** Refer to the following research paper for more information:
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** Benoit A., Caplier A., Durette B., Herault, J., "USING HUMAN VISUAL SYSTEM MODELING FOR BIO-INSPIRED LOW LEVEL IMAGE PROCESSING", Elsevier, Computer Vision and Image Understanding 114 (2010), pp. 758-773, DOI: http://dx.doi.org/10.1016/j.cviu.2010.01.011
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** This work have been carried out thanks to Jeanny Herault who's research and great discussions are the basis of all this work, please take a look at his book:
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** Vision: Images, Signals and Neural Networks: Models of Neural Processing in Visual Perception (Progress in Neural Processing),By: Jeanny Herault, ISBN: 9814273686. WAPI (Tower ID): 113266891.
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**
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** The retina filter includes the research contributions of phd/research collegues from which code has been redrawn by the author :
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** _take a look at the retinacolor.hpp module to discover Brice Chaix de Lavarene color mosaicing/demosaicing and the reference paper:
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** ====> B. Chaix de Lavarene, D. Alleysson, B. Durette, J. Herault (2007). "Efficient demosaicing through recursive filtering", IEEE International Conference on Image Processing ICIP 2007
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** _take a look at imagelogpolprojection.hpp to discover retina spatial log sampling which originates from Barthelemy Durette phd with Jeanny Herault. A Retina / V1 cortex projection is also proposed and originates from Jeanny's discussions.
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** ====> more informations in the above cited Jeanny Heraults's book.
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**
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** License Agreement
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** For Open Source Computer Vision Library
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**
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** Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
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** Copyright (C) 2008-2011, Willow Garage Inc., all rights reserved.
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**
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** For Human Visual System tools (hvstools)
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** Copyright (C) 2007-2011, LISTIC Lab, Annecy le Vieux and GIPSA Lab, Grenoble, France, all rights reserved.
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**
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** Third party copyrights are property of their respective owners.
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**
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** Redistribution and use in source and binary forms, with or without modification,
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** are permitted provided that the following conditions are met:
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**
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** * Redistributions of source code must retain the above copyright notice,
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** this list of conditions and the following disclaimer.
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**
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** * Redistributions in binary form must reproduce the above copyright notice,
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** this list of conditions and the following disclaimer in the documentation
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** and/or other materials provided with the distribution.
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**
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** * The name of the copyright holders may not be used to endorse or promote products
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** derived from this software without specific prior written permission.
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**
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** This software is provided by the copyright holders and contributors "as is" and
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** any express or implied warranties, including, but not limited to, the implied
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** warranties of merchantability and fitness for a particular purpose are disclaimed.
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** In no event shall the Intel Corporation or contributors be liable for any direct,
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** indirect, incidental, special, exemplary, or consequential damages
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** (including, but not limited to, procurement of substitute goods or services;
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** loss of use, data, or profits; or business interruption) however caused
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** and on any theory of liability, whether in contract, strict liability,
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** or tort (including negligence or otherwise) arising in any way out of
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** the use of this software, even if advised of the possibility of such damage.
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*******************************************************************************/
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/*
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* Retina.cpp
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*
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* Created on: Jul 19, 2011
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* Author: Alexandre Benoit
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*/
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#include "precomp.hpp"
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#include "retinafilter.hpp"
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#include <iostream>
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namespace cv
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{
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Retina::Retina(const cv::Size inputSize)
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{
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_retinaFilter = 0;
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_init(inputSize, true, RETINA_COLOR_BAYER, false);
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}
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Retina::Retina(const cv::Size inputSize, const bool colorMode, RETINA_COLORSAMPLINGMETHOD colorSamplingMethod, const bool useRetinaLogSampling, const double reductionFactor, const double samplingStrenght)
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{
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_retinaFilter = 0;
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_init(inputSize, colorMode, colorSamplingMethod, useRetinaLogSampling, reductionFactor, samplingStrenght);
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};
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Retina::~Retina()
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{
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if (_retinaFilter)
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delete _retinaFilter;
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}
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/**
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* retreive retina input buffer size
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*/
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Size Retina::inputSize(){return cv::Size(_retinaFilter->getInputNBcolumns(), _retinaFilter->getInputNBrows());}
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/**
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* retreive retina output buffer size
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*/
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Size Retina::outputSize(){return cv::Size(_retinaFilter->getOutputNBcolumns(), _retinaFilter->getOutputNBrows());}
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void Retina::setColorSaturation(const bool saturateColors, const float colorSaturationValue)
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{
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_retinaFilter->setColorSaturation(saturateColors, colorSaturationValue);
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}
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struct Retina::RetinaParameters Retina::getParameters(){return _retinaParameters;}
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void Retina::setup(std::string retinaParameterFile, const bool applyDefaultSetupOnFailure)
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{
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try
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{
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// opening retinaParameterFile in read mode
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cv::FileStorage fs(retinaParameterFile, cv::FileStorage::READ);
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setup(fs, applyDefaultSetupOnFailure);
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}catch(Exception &e)
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{
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std::cout<<"Retina::setup: wrong/unappropriate xml parameter file : error report :`n=>"<<e.what()<<std::endl;
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if (applyDefaultSetupOnFailure)
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{
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std::cout<<"Retina::setup: resetting retina with default parameters"<<std::endl;
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setupOPLandIPLParvoChannel();
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setupIPLMagnoChannel();
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}
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else
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{
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std::cout<<"=> keeping current parameters"<<std::endl;
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}
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}
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}
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void Retina::setup(cv::FileStorage &fs, const bool applyDefaultSetupOnFailure)
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{
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try
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{
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// read parameters file if it exists or apply default setup if asked for
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if (!fs.isOpened())
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{
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std::cout<<"Retina::setup: provided parameters file could not be open... skeeping configuration"<<std::endl;
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return;
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// implicit else case : retinaParameterFile could be open (it exists at least)
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}
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// OPL and Parvo init first... update at the same time the parameters structure and the retina core
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cv::FileNode rootFn = fs.root(), currFn=rootFn["OPLandIPLparvo"];
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currFn["colorMode"]>>_retinaParameters.OPLandIplParvo.colorMode;
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currFn["normaliseOutput"]>>_retinaParameters.OPLandIplParvo.normaliseOutput;
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currFn["photoreceptorsLocalAdaptationSensitivity"]>>_retinaParameters.OPLandIplParvo.photoreceptorsLocalAdaptationSensitivity;
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currFn["photoreceptorsTemporalConstant"]>>_retinaParameters.OPLandIplParvo.photoreceptorsTemporalConstant;
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currFn["photoreceptorsSpatialConstant"]>>_retinaParameters.OPLandIplParvo.photoreceptorsSpatialConstant;
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currFn["horizontalCellsGain"]>>_retinaParameters.OPLandIplParvo.horizontalCellsGain;
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currFn["hcellsTemporalConstant"]>>_retinaParameters.OPLandIplParvo.hcellsTemporalConstant;
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currFn["hcellsSpatialConstant"]>>_retinaParameters.OPLandIplParvo.hcellsSpatialConstant;
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currFn["ganglionCellsSensitivity"]>>_retinaParameters.OPLandIplParvo.ganglionCellsSensitivity;
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setupOPLandIPLParvoChannel(_retinaParameters.OPLandIplParvo.colorMode, _retinaParameters.OPLandIplParvo.normaliseOutput, _retinaParameters.OPLandIplParvo.photoreceptorsLocalAdaptationSensitivity, _retinaParameters.OPLandIplParvo.photoreceptorsTemporalConstant, _retinaParameters.OPLandIplParvo.photoreceptorsSpatialConstant, _retinaParameters.OPLandIplParvo.horizontalCellsGain, _retinaParameters.OPLandIplParvo.hcellsTemporalConstant, _retinaParameters.OPLandIplParvo.hcellsSpatialConstant, _retinaParameters.OPLandIplParvo.ganglionCellsSensitivity);
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// init retina IPL magno setup... update at the same time the parameters structure and the retina core
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currFn=rootFn["IPLmagno"];
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currFn["normaliseOutput"]>>_retinaParameters.IplMagno.normaliseOutput;
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currFn["parasolCells_beta"]>>_retinaParameters.IplMagno.parasolCells_beta;
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currFn["parasolCells_tau"]>>_retinaParameters.IplMagno.parasolCells_tau;
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currFn["parasolCells_k"]>>_retinaParameters.IplMagno.parasolCells_k;
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currFn["amacrinCellsTemporalCutFrequency"]>>_retinaParameters.IplMagno.amacrinCellsTemporalCutFrequency;
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currFn["V0CompressionParameter"]>>_retinaParameters.IplMagno.V0CompressionParameter;
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currFn["localAdaptintegration_tau"]>>_retinaParameters.IplMagno.localAdaptintegration_tau;
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currFn["localAdaptintegration_k"]>>_retinaParameters.IplMagno.localAdaptintegration_k;
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setupIPLMagnoChannel(_retinaParameters.IplMagno.normaliseOutput, _retinaParameters.IplMagno.parasolCells_beta, _retinaParameters.IplMagno.parasolCells_tau, _retinaParameters.IplMagno.parasolCells_k, _retinaParameters.IplMagno.amacrinCellsTemporalCutFrequency,_retinaParameters.IplMagno.V0CompressionParameter, _retinaParameters.IplMagno.localAdaptintegration_tau, _retinaParameters.IplMagno.localAdaptintegration_k);
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}catch(Exception &e)
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{
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std::cout<<"Retina::setup: resetting retina with default parameters"<<std::endl;
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if (applyDefaultSetupOnFailure)
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{
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setupOPLandIPLParvoChannel();
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setupIPLMagnoChannel();
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}
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std::cout<<"Retina::setup: wrong/unappropriate xml parameter file : error report :`n=>"<<e.what()<<std::endl;
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std::cout<<"=> keeping current parameters"<<std::endl;
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}
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// report current configuration
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std::cout<<printSetup()<<std::endl;
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}
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void Retina::setup(cv::Retina::RetinaParameters newConfiguration)
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{
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// simply copy structures
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memcpy(&_retinaParameters, &newConfiguration, sizeof(cv::Retina::RetinaParameters));
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// apply setup
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setupOPLandIPLParvoChannel(_retinaParameters.OPLandIplParvo.colorMode, _retinaParameters.OPLandIplParvo.normaliseOutput, _retinaParameters.OPLandIplParvo.photoreceptorsLocalAdaptationSensitivity, _retinaParameters.OPLandIplParvo.photoreceptorsTemporalConstant, _retinaParameters.OPLandIplParvo.photoreceptorsSpatialConstant, _retinaParameters.OPLandIplParvo.horizontalCellsGain, _retinaParameters.OPLandIplParvo.hcellsTemporalConstant, _retinaParameters.OPLandIplParvo.hcellsSpatialConstant, _retinaParameters.OPLandIplParvo.ganglionCellsSensitivity);
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setupIPLMagnoChannel(_retinaParameters.IplMagno.normaliseOutput, _retinaParameters.IplMagno.parasolCells_beta, _retinaParameters.IplMagno.parasolCells_tau, _retinaParameters.IplMagno.parasolCells_k, _retinaParameters.IplMagno.amacrinCellsTemporalCutFrequency,_retinaParameters.IplMagno.V0CompressionParameter, _retinaParameters.IplMagno.localAdaptintegration_tau, _retinaParameters.IplMagno.localAdaptintegration_k);
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}
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const std::string Retina::printSetup()
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{
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std::stringstream outmessage;
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// displaying OPL and IPL parvo setup
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outmessage<<"Current Retina instance setup :"
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<<"\nOPLandIPLparvo"<<"{"
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<< "\n==> colorMode : " << _retinaParameters.OPLandIplParvo.colorMode
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<< "\n==> normalizeParvoOutput :" << _retinaParameters.OPLandIplParvo.normaliseOutput
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<< "\n==> photoreceptorsLocalAdaptationSensitivity : " << _retinaParameters.OPLandIplParvo.photoreceptorsLocalAdaptationSensitivity
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<< "\n==> photoreceptorsTemporalConstant : " << _retinaParameters.OPLandIplParvo.photoreceptorsTemporalConstant
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<< "\n==> photoreceptorsSpatialConstant : " << _retinaParameters.OPLandIplParvo.photoreceptorsSpatialConstant
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<< "\n==> horizontalCellsGain : " << _retinaParameters.OPLandIplParvo.horizontalCellsGain
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<< "\n==> hcellsTemporalConstant : " << _retinaParameters.OPLandIplParvo.hcellsTemporalConstant
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<< "\n==> hcellsSpatialConstant : " << _retinaParameters.OPLandIplParvo.hcellsSpatialConstant
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<< "\n==> parvoGanglionCellsSensitivity : " << _retinaParameters.OPLandIplParvo.ganglionCellsSensitivity
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<<"}\n";
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// displaying IPL magno setup
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outmessage<<"Current Retina instance setup :"
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<<"\nIPLmagno"<<"{"
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<< "\n==> normaliseOutput : " << _retinaParameters.IplMagno.normaliseOutput
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<< "\n==> parasolCells_beta : " << _retinaParameters.IplMagno.parasolCells_beta
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<< "\n==> parasolCells_tau : " << _retinaParameters.IplMagno.parasolCells_tau
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<< "\n==> parasolCells_k : " << _retinaParameters.IplMagno.parasolCells_k
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<< "\n==> amacrinCellsTemporalCutFrequency : " << _retinaParameters.IplMagno.amacrinCellsTemporalCutFrequency
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<< "\n==> V0CompressionParameter : " << _retinaParameters.IplMagno.V0CompressionParameter
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<< "\n==> localAdaptintegration_tau : " << _retinaParameters.IplMagno.localAdaptintegration_tau
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<< "\n==> localAdaptintegration_k : " << _retinaParameters.IplMagno.localAdaptintegration_k
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<<"}";
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return outmessage.str();
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}
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void Retina::write( std::string fs ) const
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{
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FileStorage parametersSaveFile(fs, cv::FileStorage::WRITE );
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write(parametersSaveFile);
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}
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void Retina::write( FileStorage& fs ) const
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{
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if (!fs.isOpened())
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return; // basic error case
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fs<<"OPLandIPLparvo"<<"{";
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fs << "colorMode" << _retinaParameters.OPLandIplParvo.colorMode;
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fs << "normaliseOutput" << _retinaParameters.OPLandIplParvo.normaliseOutput;
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fs << "photoreceptorsLocalAdaptationSensitivity" << _retinaParameters.OPLandIplParvo.photoreceptorsLocalAdaptationSensitivity;
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fs << "photoreceptorsTemporalConstant" << _retinaParameters.OPLandIplParvo.photoreceptorsTemporalConstant;
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fs << "photoreceptorsSpatialConstant" << _retinaParameters.OPLandIplParvo.photoreceptorsSpatialConstant;
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fs << "horizontalCellsGain" << _retinaParameters.OPLandIplParvo.horizontalCellsGain;
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fs << "hcellsTemporalConstant" << _retinaParameters.OPLandIplParvo.hcellsTemporalConstant;
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fs << "hcellsSpatialConstant" << _retinaParameters.OPLandIplParvo.hcellsSpatialConstant;
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fs << "ganglionCellsSensitivity" << _retinaParameters.OPLandIplParvo.ganglionCellsSensitivity;
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fs << "}";
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fs<<"IPLmagno"<<"{";
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fs << "normaliseOutput" << _retinaParameters.IplMagno.normaliseOutput;
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fs << "parasolCells_beta" << _retinaParameters.IplMagno.parasolCells_beta;
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fs << "parasolCells_tau" << _retinaParameters.IplMagno.parasolCells_tau;
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fs << "parasolCells_k" << _retinaParameters.IplMagno.parasolCells_k;
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fs << "amacrinCellsTemporalCutFrequency" << _retinaParameters.IplMagno.amacrinCellsTemporalCutFrequency;
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fs << "V0CompressionParameter" << _retinaParameters.IplMagno.V0CompressionParameter;
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fs << "localAdaptintegration_tau" << _retinaParameters.IplMagno.localAdaptintegration_tau;
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fs << "localAdaptintegration_k" << _retinaParameters.IplMagno.localAdaptintegration_k;
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fs<<"}";
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}
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void Retina::setupOPLandIPLParvoChannel(const bool colorMode, const bool normaliseOutput, const float photoreceptorsLocalAdaptationSensitivity, const float photoreceptorsTemporalConstant, const float photoreceptorsSpatialConstant, const float horizontalCellsGain, const float HcellsTemporalConstant, const float HcellsSpatialConstant, const float ganglionCellsSensitivity)
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{
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// retina core parameters setup
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_retinaFilter->setColorMode(colorMode);
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_retinaFilter->setPhotoreceptorsLocalAdaptationSensitivity(photoreceptorsLocalAdaptationSensitivity);
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_retinaFilter->setOPLandParvoParameters(0, photoreceptorsTemporalConstant, photoreceptorsSpatialConstant, horizontalCellsGain, HcellsTemporalConstant, HcellsSpatialConstant, ganglionCellsSensitivity);
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_retinaFilter->setParvoGanglionCellsLocalAdaptationSensitivity(ganglionCellsSensitivity);
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_retinaFilter->activateNormalizeParvoOutput_0_maxOutputValue(normaliseOutput);
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// update parameters struture
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_retinaParameters.OPLandIplParvo.colorMode = colorMode;
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_retinaParameters.OPLandIplParvo.normaliseOutput = normaliseOutput;
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_retinaParameters.OPLandIplParvo.photoreceptorsLocalAdaptationSensitivity = photoreceptorsLocalAdaptationSensitivity;
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_retinaParameters.OPLandIplParvo.photoreceptorsTemporalConstant = photoreceptorsTemporalConstant;
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_retinaParameters.OPLandIplParvo.photoreceptorsSpatialConstant = photoreceptorsSpatialConstant;
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_retinaParameters.OPLandIplParvo.horizontalCellsGain = horizontalCellsGain;
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_retinaParameters.OPLandIplParvo.hcellsTemporalConstant = HcellsTemporalConstant;
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_retinaParameters.OPLandIplParvo.hcellsSpatialConstant = HcellsSpatialConstant;
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_retinaParameters.OPLandIplParvo.ganglionCellsSensitivity = ganglionCellsSensitivity;
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}
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void Retina::setupIPLMagnoChannel(const bool normaliseOutput, const float parasolCells_beta, const float parasolCells_tau, const float parasolCells_k, const float amacrinCellsTemporalCutFrequency, const float V0CompressionParameter, const float localAdaptintegration_tau, const float localAdaptintegration_k)
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{
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_retinaFilter->setMagnoCoefficientsTable(parasolCells_beta, parasolCells_tau, parasolCells_k, amacrinCellsTemporalCutFrequency, V0CompressionParameter, localAdaptintegration_tau, localAdaptintegration_k);
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_retinaFilter->activateNormalizeMagnoOutput_0_maxOutputValue(normaliseOutput);
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// update parameters struture
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_retinaParameters.IplMagno.normaliseOutput = normaliseOutput;
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_retinaParameters.IplMagno.parasolCells_beta = parasolCells_beta;
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_retinaParameters.IplMagno.parasolCells_tau = parasolCells_tau;
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_retinaParameters.IplMagno.parasolCells_k = parasolCells_k;
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_retinaParameters.IplMagno.amacrinCellsTemporalCutFrequency = amacrinCellsTemporalCutFrequency;
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_retinaParameters.IplMagno.V0CompressionParameter = V0CompressionParameter;
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_retinaParameters.IplMagno.localAdaptintegration_tau = localAdaptintegration_tau;
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_retinaParameters.IplMagno.localAdaptintegration_k = localAdaptintegration_k;
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}
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void Retina::run(const cv::Mat &inputMatToConvert)
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{
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// first convert input image to the compatible format : std::valarray<float>
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const bool colorMode = _convertCvMat2ValarrayBuffer(inputMatToConvert, _inputBuffer);
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// process the retina
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if (!_retinaFilter->runFilter(_inputBuffer, colorMode, false, _retinaParameters.OPLandIplParvo.colorMode && colorMode, false))
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throw cv::Exception(-1, "Retina cannot be applied, wrong input buffer size", "Retina::run", "Retina.h", 0);
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}
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void Retina::getParvo(cv::Mat &retinaOutput_parvo)
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{
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if (_retinaFilter->getColorMode())
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{
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// reallocate output buffer (if necessary)
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_convertValarrayBuffer2cvMat(_retinaFilter->getColorOutput(), _retinaFilter->getOutputNBrows(), _retinaFilter->getOutputNBcolumns(), true, retinaOutput_parvo);
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}else
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{
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// reallocate output buffer (if necessary)
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_convertValarrayBuffer2cvMat(_retinaFilter->getContours(), _retinaFilter->getOutputNBrows(), _retinaFilter->getOutputNBcolumns(), false, retinaOutput_parvo);
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}
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//retinaOutput_parvo/=255.0;
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}
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void Retina::getMagno(cv::Mat &retinaOutput_magno)
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{
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// reallocate output buffer (if necessary)
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_convertValarrayBuffer2cvMat(_retinaFilter->getMovingContours(), _retinaFilter->getOutputNBrows(), _retinaFilter->getOutputNBcolumns(), false, retinaOutput_magno);
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//retinaOutput_magno/=255.0;
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}
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// original API level data accessors : copy buffers if size matches
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void Retina::getMagno(std::valarray<float> &magnoOutputBufferCopy){if (magnoOutputBufferCopy.size()==_retinaFilter->getMovingContours().size()) magnoOutputBufferCopy = _retinaFilter->getMovingContours();}
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void Retina::getParvo(std::valarray<float> &parvoOutputBufferCopy){if (parvoOutputBufferCopy.size()==_retinaFilter->getContours().size()) parvoOutputBufferCopy = _retinaFilter->getContours();}
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// private method called by constructirs
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void Retina::_init(const cv::Size inputSize, const bool colorMode, RETINA_COLORSAMPLINGMETHOD colorSamplingMethod, const bool useRetinaLogSampling, const double reductionFactor, const double samplingStrenght)
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{
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// basic error check
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if (inputSize.height*inputSize.width <= 0)
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throw cv::Exception(-1, "Bad retina size setup : size height and with must be superior to zero", "Retina::setup", "Retina.h", 0);
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unsigned int nbPixels=inputSize.height*inputSize.width;
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// resize buffers if size does not match
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_inputBuffer.resize(nbPixels*3); // buffer supports gray images but also 3 channels color buffers... (larger is better...)
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// allocate the retina model
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if (_retinaFilter)
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delete _retinaFilter;
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_retinaFilter = new RetinaFilter(inputSize.height, inputSize.width, colorMode, colorSamplingMethod, useRetinaLogSampling, reductionFactor, samplingStrenght);
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// prepare the default parameter XML file with default setup
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setup(_retinaParameters);
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// init retina
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_retinaFilter->clearAllBuffers();
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// report current configuration
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std::cout<<printSetup()<<std::endl;
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}
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void Retina::_convertValarrayBuffer2cvMat(const std::valarray<float> &grayMatrixToConvert, const unsigned int nbRows, const unsigned int nbColumns, const bool colorMode, cv::Mat &outBuffer)
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{
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// fill output buffer with the valarray buffer
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const float *valarrayPTR=get_data(grayMatrixToConvert);
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if (!colorMode)
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{
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outBuffer.create(cv::Size(nbColumns, nbRows), CV_8U);
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for (unsigned int i=0;i<nbRows;++i)
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{
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for (unsigned int j=0;j<nbColumns;++j)
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{
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cv::Point2d pixel(j,i);
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outBuffer.at<unsigned char>(pixel)=(unsigned char)*(valarrayPTR++);
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}
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}
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}else
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{
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const unsigned int doubleNBpixels=_retinaFilter->getOutputNBpixels()*2;
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outBuffer.create(cv::Size(nbColumns, nbRows), CV_8UC3);
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for (unsigned int i=0;i<nbRows;++i)
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{
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for (unsigned int j=0;j<nbColumns;++j,++valarrayPTR)
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{
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cv::Point2d pixel(j,i);
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cv::Vec3b pixelValues;
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pixelValues[2]=(unsigned char)*(valarrayPTR);
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pixelValues[1]=(unsigned char)*(valarrayPTR+_retinaFilter->getOutputNBpixels());
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pixelValues[0]=(unsigned char)*(valarrayPTR+doubleNBpixels);
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outBuffer.at<cv::Vec3b>(pixel)=pixelValues;
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}
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}
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}
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}
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const bool Retina::_convertCvMat2ValarrayBuffer(const cv::Mat inputMatToConvert, std::valarray<float> &outputValarrayMatrix)
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{
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// first check input consistency
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if (inputMatToConvert.empty())
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throw cv::Exception(-1, "Retina cannot be applied, input buffer is empty", "Retina::run", "Retina.h", 0);
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// retreive color mode from image input
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int imageNumberOfChannels = inputMatToConvert.channels();
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// convert to float AND fill the valarray buffer
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typedef float T; // define here the target pixel format, here, float
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const int dsttype = DataType<T>::depth; // output buffer is float format
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if(imageNumberOfChannels==4)
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{
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// create a cv::Mat table (for RGBA planes)
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cv::Mat planes[] =
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{
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cv::Mat(inputMatToConvert.size(), dsttype, &outputValarrayMatrix[_retinaFilter->getInputNBpixels()*2]),
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cv::Mat(inputMatToConvert.size(), dsttype, &outputValarrayMatrix[_retinaFilter->getInputNBpixels()]),
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cv::Mat(inputMatToConvert.size(), dsttype, &outputValarrayMatrix[0]),
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cv::Mat(inputMatToConvert.size(), dsttype) // last channel (alpha) does not point on the valarray (not usefull in our case)
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};
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// split color cv::Mat in 4 planes... it fills valarray directely
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cv::split(cv::Mat_<Vec<T, 4> >(inputMatToConvert), planes);
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}else if (imageNumberOfChannels==3)
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{
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// create a cv::Mat table (for RGB planes)
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cv::Mat planes[] =
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{
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cv::Mat(inputMatToConvert.size(), dsttype, &outputValarrayMatrix[_retinaFilter->getInputNBpixels()*2]),
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cv::Mat(inputMatToConvert.size(), dsttype, &outputValarrayMatrix[_retinaFilter->getInputNBpixels()]),
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cv::Mat(inputMatToConvert.size(), dsttype, &outputValarrayMatrix[0])
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};
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// split color cv::Mat in 3 planes... it fills valarray directely
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cv::split(cv::Mat_<Vec<T, 3> >(inputMatToConvert), planes);
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}else if(imageNumberOfChannels==1)
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{
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// create a cv::Mat header for the valarray
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cv::Mat dst(inputMatToConvert.size(), dsttype, &outputValarrayMatrix[0]);
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inputMatToConvert.convertTo(dst, dsttype);
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}
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else
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CV_Error(CV_StsUnsupportedFormat, "input image must be single channel (gray levels), bgr format (color) or bgra (color with transparency which won't be considered");
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return imageNumberOfChannels>1; // return bool : false for gray level image processing, true for color mode
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}
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void Retina::clearBuffers() {_retinaFilter->clearAllBuffers();}
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void Retina::activateMovingContoursProcessing(const bool activate){_retinaFilter->activateMovingContoursProcessing(activate);}
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void Retina::activateContoursProcessing(const bool activate){_retinaFilter->activateContoursProcessing(activate);}
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} // end of namespace cv
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