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92 lines
3.9 KiB
C++
92 lines
3.9 KiB
C++
/*M///////////////////////////////////////////////////////////////////////////////////////
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//
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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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// 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) 2009-2010, Willow Garage Inc., all rights reserved.
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// Third party copyrights are property of their respective owners.
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//
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// @Authors
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// Matthias Bady aegirxx ==> gmail.com
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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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// * Redistribution's 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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// * Redistribution's 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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//M*/
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#include "precomp.hpp"
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#include "opencl_kernels.hpp"
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using namespace cv;
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using namespace cv::ocl;
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BRIEF_OCL::BRIEF_OCL( int _bytes ) : bytes( _bytes )
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{
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}
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void BRIEF_OCL::compute( const oclMat& image, const oclMat& keypoints, oclMat& mask, oclMat& descriptors ) const
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{
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CV_Assert( image.type( ) == CV_8UC1 );
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if ( keypoints.size( ).area( ) == 0 ) return;
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descriptors = oclMat( Mat( keypoints.cols, bytes, CV_8UC1 ) );
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if( mask.cols != keypoints.cols )
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{
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mask = oclMat( Mat::ones( 1, keypoints.cols, CV_8UC1 ) );
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}
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oclMat sum;
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integral( image, sum, CV_32S );
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cl_mem sumTexture = bindTexture( sum );
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std::stringstream build_opt;
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build_opt
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<< " -D BYTES=" << bytes
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<< " -D KERNEL_SIZE=" << KERNEL_SIZE
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<< " -D BORDER=" << getBorderSize();
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const String kernelname = "extractBriefDescriptors";
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size_t localThreads[3] = {bytes, 1, 1};
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size_t globalThreads[3] = {keypoints.cols * bytes, 1, 1};
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Context* ctx = Context::getContext( );
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std::vector< std::pair<size_t, const void *> > args;
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args.push_back( std::make_pair( sizeof (cl_mem), (void *) &sumTexture ) );
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args.push_back( std::make_pair( sizeof (cl_mem), (void *) &keypoints.data ) );
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args.push_back( std::make_pair( sizeof (cl_int), (void *) &keypoints.step ) );
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args.push_back( std::make_pair( sizeof (cl_mem), (void *) &descriptors.data ) );
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args.push_back( std::make_pair( sizeof (cl_int), (void *) &descriptors.step ) );
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args.push_back( std::make_pair( sizeof (cl_mem), (void *) &mask.data ) );
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openCLExecuteKernel( ctx, &brief, kernelname, globalThreads, localThreads, args, -1, -1, build_opt.str( ).c_str( ) );
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openCLFree( sumTexture );
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}
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int BRIEF_OCL::getBorderSize( )
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{
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return PATCH_SIZE / 2 + KERNEL_SIZE / 2;
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}
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