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/*#******************************************************************************
* * IMPORTANT : READ BEFORE DOWNLOADING , COPYING , INSTALLING OR USING .
* *
* * By downloading , copying , installing or using the software you agree to this license .
* * If you do not agree to this license , do not download , install ,
* * copy or use the software .
* *
* *
* * 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 .
* * 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 .
* *
* * Maintainers : Listic lab ( code author current affiliation & applications ) and Gipsa Lab ( original research origins & applications )
* *
* * Creation - enhancement process 2007 - 2011
* * Author : Alexandre Benoit ( benoit . alexandre . vision @ gmail . com ) , LISTIC lab , Annecy le vieux , France
* *
* * 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 ) .
* * Refer to the following research paper for more information :
* * 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
* * 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 :
* * 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.
* *
* * The retina filter includes the research contributions of phd / research collegues from which code has been redrawn by the author :
* * _take a look at the retinacolor . hpp module to discover Brice Chaix de Lavarene color mosaicing / demosaicing and the reference paper :
* * = = = = > B . Chaix de Lavarene , D . Alleysson , B . Durette , J . Herault ( 2007 ) . " Efficient demosaicing through recursive filtering " , IEEE International Conference on Image Processing ICIP 2007
* * _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 .
* * = = = = > more informations in the above cited Jeanny Heraults ' s book .
* *
* * License Agreement
* * For Open Source Computer Vision Library
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* * Copyright ( C ) 2000 - 2008 , Intel Corporation , all rights reserved .
* * Copyright ( C ) 2008 - 2011 , Willow Garage Inc . , all rights reserved .
* *
* * For Human Visual System tools ( hvstools )
* * Copyright ( C ) 2007 - 2011 , LISTIC Lab , Annecy le Vieux and GIPSA Lab , Grenoble , France , all rights reserved .
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* * loss of use , data , or profits ; or business interruption ) however caused
* * and on any theory of liability , whether in contract , strict liability ,
* * or tort ( including negligence or otherwise ) arising in any way out of
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* Retina . cpp
*
* Created on : Jul 19 , 2011
* Author : Alexandre Benoit
*/
# include "precomp.hpp"
# include "retinafilter.hpp"
# include <iostream>
namespace cv
{
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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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{
_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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if ( _retinaFilter )
delete _retinaFilter ;
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}
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void Retina : : setColorSaturation ( const bool saturateColors , const float colorSaturationValue )
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{
_retinaFilter - > setColorSaturation ( saturateColors , colorSaturationValue ) ;
}
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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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try
{
// opening retinaParameterFile in read mode
cv : : FileStorage fs ( retinaParameterFile , cv : : FileStorage : : READ ) ;
setup ( fs , applyDefaultSetupOnFailure ) ;
} catch ( Exception & e )
{
std : : cout < < " Retina::setup: wrong/unappropriate xml parameter file : error report :`n=> " < < e . what ( ) < < std : : endl ;
if ( applyDefaultSetupOnFailure )
{
std : : cout < < " Retina::setup: resetting retina with default parameters " < < std : : endl ;
setupOPLandIPLParvoChannel ( ) ;
setupIPLMagnoChannel ( ) ;
}
else
{
std : : cout < < " => keeping current parameters " < < std : : endl ;
}
}
}
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void Retina : : setup ( cv : : FileStorage & fs , const bool applyDefaultSetupOnFailure )
{
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try
{
// read parameters file if it exists or apply default setup if asked for
if ( ! fs . isOpened ( ) )
{
std : : cout < < " Retina::setup: provided parameters file could not be open... skeeping configuration " < < std : : endl ;
return ;
// implicit else case : retinaParameterFile could be open (it exists at least)
}
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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 ;
currFn [ " normaliseOutput " ] > > _retinaParameters . OPLandIplParvo . normaliseOutput ;
currFn [ " photoreceptorsLocalAdaptationSensitivity " ] > > _retinaParameters . OPLandIplParvo . photoreceptorsLocalAdaptationSensitivity ;
currFn [ " photoreceptorsTemporalConstant " ] > > _retinaParameters . OPLandIplParvo . photoreceptorsTemporalConstant ;
currFn [ " photoreceptorsSpatialConstant " ] > > _retinaParameters . OPLandIplParvo . photoreceptorsSpatialConstant ;
currFn [ " horizontalCellsGain " ] > > _retinaParameters . OPLandIplParvo . horizontalCellsGain ;
currFn [ " hcellsTemporalConstant " ] > > _retinaParameters . OPLandIplParvo . hcellsTemporalConstant ;
currFn [ " hcellsSpatialConstant " ] > > _retinaParameters . OPLandIplParvo . hcellsSpatialConstant ;
currFn [ " ganglionCellsSensitivity " ] > > _retinaParameters . OPLandIplParvo . ganglionCellsSensitivity ;
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 ) ;
// 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 ;
currFn [ " parasolCells_beta " ] > > _retinaParameters . IplMagno . parasolCells_beta ;
currFn [ " parasolCells_tau " ] > > _retinaParameters . IplMagno . parasolCells_tau ;
currFn [ " parasolCells_k " ] > > _retinaParameters . IplMagno . parasolCells_k ;
currFn [ " amacrinCellsTemporalCutFrequency " ] > > _retinaParameters . IplMagno . amacrinCellsTemporalCutFrequency ;
currFn [ " V0CompressionParameter " ] > > _retinaParameters . IplMagno . V0CompressionParameter ;
currFn [ " localAdaptintegration_tau " ] > > _retinaParameters . IplMagno . localAdaptintegration_tau ;
currFn [ " localAdaptintegration_k " ] > > _retinaParameters . IplMagno . localAdaptintegration_k ;
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 )
{
std : : cout < < " Retina::setup: resetting retina with default parameters " < < std : : endl ;
if ( applyDefaultSetupOnFailure )
{
setupOPLandIPLParvoChannel ( ) ;
setupIPLMagnoChannel ( ) ;
}
std : : cout < < " Retina::setup: wrong/unappropriate xml parameter file : error report :`n=> " < < e . what ( ) < < std : : endl ;
std : : cout < < " => keeping current parameters " < < std : : endl ;
}
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// report current configuration
std : : cout < < printSetup ( ) < < std : : endl ;
}
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void Retina : : setup ( cv : : Retina : : RetinaParameters newConfiguration )
{
// simply copy structures
memcpy ( & _retinaParameters , & newConfiguration , sizeof ( cv : : Retina : : RetinaParameters ) ) ;
// apply setup
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 ) ;
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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const std : : string Retina : : printSetup ( )
{
std : : stringstream outmessage ;
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// displaying OPL and IPL parvo setup
outmessage < < " Current Retina instance setup : "
< < " \n OPLandIPLparvo " < < " { "
< < " \n ==> colorMode : " < < _retinaParameters . OPLandIplParvo . colorMode
< < " \n ==> normalizeParvoOutput : " < < _retinaParameters . OPLandIplParvo . normaliseOutput
< < " \n ==> photoreceptorsLocalAdaptationSensitivity : " < < _retinaParameters . OPLandIplParvo . photoreceptorsLocalAdaptationSensitivity
< < " \n ==> photoreceptorsTemporalConstant : " < < _retinaParameters . OPLandIplParvo . photoreceptorsTemporalConstant
< < " \n ==> photoreceptorsSpatialConstant : " < < _retinaParameters . OPLandIplParvo . photoreceptorsSpatialConstant
< < " \n ==> horizontalCellsGain : " < < _retinaParameters . OPLandIplParvo . horizontalCellsGain
< < " \n ==> hcellsTemporalConstant : " < < _retinaParameters . OPLandIplParvo . hcellsTemporalConstant
< < " \n ==> hcellsSpatialConstant : " < < _retinaParameters . OPLandIplParvo . hcellsSpatialConstant
< < " \n ==> parvoGanglionCellsSensitivity : " < < _retinaParameters . OPLandIplParvo . ganglionCellsSensitivity
< < " } \n " ;
// displaying IPL magno setup
outmessage < < " Current Retina instance setup : "
< < " \n IPLmagno " < < " { "
< < " \n ==> normaliseOutput : " < < _retinaParameters . IplMagno . normaliseOutput
< < " \n ==> parasolCells_beta : " < < _retinaParameters . IplMagno . parasolCells_beta
< < " \n ==> parasolCells_tau : " < < _retinaParameters . IplMagno . parasolCells_tau
< < " \n ==> parasolCells_k : " < < _retinaParameters . IplMagno . parasolCells_k
< < " \n ==> amacrinCellsTemporalCutFrequency : " < < _retinaParameters . IplMagno . amacrinCellsTemporalCutFrequency
< < " \n ==> V0CompressionParameter : " < < _retinaParameters . IplMagno . V0CompressionParameter
< < " \n ==> localAdaptintegration_tau : " < < _retinaParameters . IplMagno . localAdaptintegration_tau
< < " \n ==> localAdaptintegration_k : " < < _retinaParameters . IplMagno . localAdaptintegration_k
< < " } " ;
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return outmessage . str ( ) ;
}
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void Retina : : write ( std : : string fs ) const
{
FileStorage parametersSaveFile ( fs , cv : : FileStorage : : WRITE ) ;
write ( parametersSaveFile ) ;
}
void Retina : : write ( FileStorage & fs ) const
{
if ( ! fs . isOpened ( ) )
return ; // basic error case
fs < < " OPLandIPLparvo " < < " { " ;
fs < < " colorMode " < < _retinaParameters . OPLandIplParvo . colorMode ;
fs < < " normaliseOutput " < < _retinaParameters . OPLandIplParvo . normaliseOutput ;
fs < < " photoreceptorsLocalAdaptationSensitivity " < < _retinaParameters . OPLandIplParvo . photoreceptorsLocalAdaptationSensitivity ;
fs < < " photoreceptorsTemporalConstant " < < _retinaParameters . OPLandIplParvo . photoreceptorsTemporalConstant ;
fs < < " photoreceptorsSpatialConstant " < < _retinaParameters . OPLandIplParvo . photoreceptorsSpatialConstant ;
fs < < " horizontalCellsGain " < < _retinaParameters . OPLandIplParvo . horizontalCellsGain ;
fs < < " hcellsTemporalConstant " < < _retinaParameters . OPLandIplParvo . hcellsTemporalConstant ;
fs < < " hcellsSpatialConstant " < < _retinaParameters . OPLandIplParvo . hcellsSpatialConstant ;
fs < < " ganglionCellsSensitivity " < < _retinaParameters . OPLandIplParvo . ganglionCellsSensitivity ;
fs < < " } " ;
fs < < " IPLmagno " < < " { " ;
fs < < " normaliseOutput " < < _retinaParameters . IplMagno . normaliseOutput ;
fs < < " parasolCells_beta " < < _retinaParameters . IplMagno . parasolCells_beta ;
fs < < " parasolCells_tau " < < _retinaParameters . IplMagno . parasolCells_tau ;
fs < < " parasolCells_k " < < _retinaParameters . IplMagno . parasolCells_k ;
fs < < " amacrinCellsTemporalCutFrequency " < < _retinaParameters . IplMagno . amacrinCellsTemporalCutFrequency ;
fs < < " V0CompressionParameter " < < _retinaParameters . IplMagno . V0CompressionParameter ;
fs < < " localAdaptintegration_tau " < < _retinaParameters . IplMagno . localAdaptintegration_tau ;
fs < < " localAdaptintegration_k " < < _retinaParameters . IplMagno . localAdaptintegration_k ;
fs < < " } " ;
}
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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 ) ;
_retinaFilter - > setPhotoreceptorsLocalAdaptationSensitivity ( photoreceptorsLocalAdaptationSensitivity ) ;
_retinaFilter - > setOPLandParvoParameters ( 0 , photoreceptorsTemporalConstant , photoreceptorsSpatialConstant , horizontalCellsGain , HcellsTemporalConstant , HcellsSpatialConstant , ganglionCellsSensitivity ) ;
_retinaFilter - > setParvoGanglionCellsLocalAdaptationSensitivity ( ganglionCellsSensitivity ) ;
_retinaFilter - > activateNormalizeParvoOutput_0_maxOutputValue ( normaliseOutput ) ;
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// update parameters struture
_retinaParameters . OPLandIplParvo . colorMode = colorMode ;
_retinaParameters . OPLandIplParvo . normaliseOutput = normaliseOutput ;
_retinaParameters . OPLandIplParvo . photoreceptorsLocalAdaptationSensitivity = photoreceptorsLocalAdaptationSensitivity ;
_retinaParameters . OPLandIplParvo . photoreceptorsTemporalConstant = photoreceptorsTemporalConstant ;
_retinaParameters . OPLandIplParvo . photoreceptorsSpatialConstant = photoreceptorsSpatialConstant ;
_retinaParameters . OPLandIplParvo . horizontalCellsGain = horizontalCellsGain ;
_retinaParameters . OPLandIplParvo . hcellsTemporalConstant = HcellsTemporalConstant ;
_retinaParameters . OPLandIplParvo . hcellsSpatialConstant = HcellsSpatialConstant ;
_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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{
_retinaFilter - > setMagnoCoefficientsTable ( parasolCells_beta , parasolCells_tau , parasolCells_k , amacrinCellsTemporalCutFrequency , V0CompressionParameter , localAdaptintegration_tau , localAdaptintegration_k ) ;
_retinaFilter - > activateNormalizeMagnoOutput_0_maxOutputValue ( normaliseOutput ) ;
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// update parameters struture
_retinaParameters . IplMagno . normaliseOutput = normaliseOutput ;
_retinaParameters . IplMagno . parasolCells_beta = parasolCells_beta ;
_retinaParameters . IplMagno . parasolCells_tau = parasolCells_tau ;
_retinaParameters . IplMagno . parasolCells_k = parasolCells_k ;
_retinaParameters . IplMagno . amacrinCellsTemporalCutFrequency = amacrinCellsTemporalCutFrequency ;
_retinaParameters . IplMagno . V0CompressionParameter = V0CompressionParameter ;
_retinaParameters . IplMagno . localAdaptintegration_tau = localAdaptintegration_tau ;
_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 ) ;
}
void Retina : : getParvo ( cv : : Mat & retinaOutput_parvo )
{
if ( _retinaFilter - > getColorMode ( ) )
{
// reallocate output buffer (if necessary)
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_convertValarrayBuffer2cvMat ( _retinaFilter - > getColorOutput ( ) , _retinaFilter - > getOutputNBrows ( ) , _retinaFilter - > getOutputNBcolumns ( ) , true , retinaOutput_parvo ) ;
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} else
{
// reallocate output buffer (if necessary)
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_convertValarrayBuffer2cvMat ( _retinaFilter - > getContours ( ) , _retinaFilter - > getOutputNBrows ( ) , _retinaFilter - > getOutputNBcolumns ( ) , false , retinaOutput_parvo ) ;
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}
//retinaOutput_parvo/=255.0;
}
void Retina : : getMagno ( cv : : Mat & retinaOutput_magno )
{
// 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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// original API level data accessors : copy buffers if size matches
void Retina : : getMagno ( std : : valarray < float > & magnoOutputBufferCopy ) { if ( magnoOutputBufferCopy . size ( ) = = _retinaFilter - > getMovingContours ( ) . size ( ) ) magnoOutputBufferCopy = _retinaFilter - > getMovingContours ( ) ; }
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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{
// basic error check
if ( inputSize . height * inputSize . width < = 0 )
throw cv : : Exception ( - 1 , " Bad retina size setup : size height and with must be superior to zero " , " Retina::setup " , " Retina.h " , 0 ) ;
unsigned int nbPixels = inputSize . height * inputSize . width ;
// resize buffers if size does not match
_inputBuffer . resize ( nbPixels * 3 ) ; // buffer supports gray images but also 3 channels color buffers... (larger is better...)
// allocate the retina model
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if ( _retinaFilter )
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
_retinaFilter - > clearAllBuffers ( ) ;
// report current configuration
std : : cout < < printSetup ( ) < < std : : endl ;
}
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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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{
// fill output buffer with the valarray buffer
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const float * valarrayPTR = get_data ( grayMatrixToConvert ) ;
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if ( ! colorMode )
{
outBuffer . create ( cv : : Size ( nbColumns , nbRows ) , CV_8U ) ;
for ( unsigned int i = 0 ; i < nbRows ; + + i )
{
for ( unsigned int j = 0 ; j < nbColumns ; + + j )
{
cv : : Point2d pixel ( j , i ) ;
outBuffer . at < unsigned char > ( pixel ) = ( unsigned char ) * ( valarrayPTR + + ) ;
}
}
} else
{
const unsigned int doubleNBpixels = _retinaFilter - > getOutputNBpixels ( ) * 2 ;
outBuffer . create ( cv : : Size ( nbColumns , nbRows ) , CV_8UC3 ) ;
for ( unsigned int i = 0 ; i < nbRows ; + + i )
{
for ( unsigned int j = 0 ; j < nbColumns ; + + j , + + valarrayPTR )
{
cv : : Point2d pixel ( j , i ) ;
cv : : Vec3b pixelValues ;
pixelValues [ 2 ] = ( unsigned char ) * ( valarrayPTR ) ;
pixelValues [ 1 ] = ( unsigned char ) * ( valarrayPTR + _retinaFilter - > getOutputNBpixels ( ) ) ;
pixelValues [ 0 ] = ( unsigned char ) * ( valarrayPTR + doubleNBpixels ) ;
outBuffer . at < cv : : Vec3b > ( pixel ) = pixelValues ;
}
}
}
}
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const bool Retina : : _convertCvMat2ValarrayBuffer ( const cv : : Mat inputMatToConvert , std : : valarray < float > & outputValarrayMatrix )
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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 ) ;
// retreive color mode from image input
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int imageNumberOfChannels = inputMatToConvert . channels ( ) ;
// convert to float AND fill the valarray buffer
typedef float T ; // define here the target pixel format, here, float
const int dsttype = DataType < T > : : depth ; // output buffer is float format
if ( imageNumberOfChannels = = 4 )
{
// create a cv::Mat table (for RGBA planes)
cv : : Mat planes [ ] =
{
cv : : Mat ( inputMatToConvert . size ( ) , dsttype , & outputValarrayMatrix [ _retinaFilter - > getInputNBpixels ( ) * 2 ] ) ,
cv : : Mat ( inputMatToConvert . size ( ) , dsttype , & outputValarrayMatrix [ _retinaFilter - > getInputNBpixels ( ) ] ) ,
cv : : Mat ( inputMatToConvert . size ( ) , dsttype , & outputValarrayMatrix [ 0 ] ) ,
cv : : Mat ( inputMatToConvert . size ( ) , dsttype ) // last channel (alpha) does not point on the valarray (not usefull in our case)
} ;
// split color cv::Mat in 4 planes... it fills valarray directely
cv : : split ( cv : : Mat_ < Vec < T , 4 > > ( inputMatToConvert ) , planes ) ;
} else if ( imageNumberOfChannels = = 3 )
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{
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// create a cv::Mat table (for RGB planes)
cv : : Mat planes [ ] =
{
cv : : Mat ( inputMatToConvert . size ( ) , dsttype , & outputValarrayMatrix [ _retinaFilter - > getInputNBpixels ( ) * 2 ] ) ,
cv : : Mat ( inputMatToConvert . size ( ) , dsttype , & outputValarrayMatrix [ _retinaFilter - > getInputNBpixels ( ) ] ) ,
cv : : Mat ( inputMatToConvert . size ( ) , dsttype , & outputValarrayMatrix [ 0 ] )
} ;
// split color cv::Mat in 3 planes... it fills valarray directely
cv : : split ( cv : : Mat_ < Vec < T , 3 > > ( inputMatToConvert ) , planes ) ;
} else if ( imageNumberOfChannels = = 1 )
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{
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// create a cv::Mat header for the valarray
cv : : Mat dst ( inputMatToConvert . size ( ) , dsttype , & outputValarrayMatrix [ 0 ] ) ;
inputMatToConvert . convertTo ( dst , dsttype ) ;
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}
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else
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 " ) ;
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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