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503 lines
22 KiB
C++
503 lines
22 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) 2010-2012, Multicoreware, Inc., all rights reserved.
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// Copyright (C) 2010-2012, Institute Of Software Chinese Academy Of Science, all rights reserved.
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// Copyright (C) 2010-2012, Advanced Micro Devices, 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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// Jia Haipeng, jiahaipeng95@gmail.com
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// Peng Xiao, pengxiao@outlook.com
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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 oclMaterials 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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namespace cv
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{
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namespace ocl
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{
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namespace stereoBP
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{
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//////////////////////////////////////////////////////////////////////////
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//////////////////////////////common////////////////////////////////////
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////////////////////////////////////////////////////////////////////////
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typedef struct
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{
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int cndisp;
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float cmax_data_term;
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float cdata_weight;
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float cmax_disc_term;
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float cdisc_single_jump;
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} con_struct_t;
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cl_mem cl_con_struct = NULL;
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static void load_constants(int ndisp, float max_data_term, float data_weight,
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float max_disc_term, float disc_single_jump)
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{
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con_struct_t *con_struct = new con_struct_t;
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con_struct -> cndisp = ndisp;
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con_struct -> cmax_data_term = max_data_term;
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con_struct -> cdata_weight = data_weight;
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con_struct -> cmax_disc_term = max_disc_term;
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con_struct -> cdisc_single_jump = disc_single_jump;
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Context* clCtx = Context::getContext();
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cl_context clContext = *(cl_context*)(clCtx->getOpenCLContextPtr());
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cl_command_queue clCmdQueue = *(cl_command_queue*)(clCtx->getOpenCLCommandQueuePtr());
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cl_con_struct = load_constant(clContext, clCmdQueue, (void *)con_struct,
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sizeof(con_struct_t));
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delete con_struct;
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}
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static void release_constants()
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{
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openCLFree(cl_con_struct);
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}
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/////////////////////////////////////////////////////////////////////////////
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///////////////////////////comp data////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////
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static void comp_data_call(const oclMat &left, const oclMat &right, oclMat &data, int /*disp*/,
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float /*cmax_data_term*/, float /*cdata_weight*/)
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{
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Context *clCxt = left.clCxt;
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int channels = left.oclchannels();
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int data_type = data.type();
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string kernelName = "comp_data";
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vector<pair<size_t , const void *> > args;
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args.push_back( make_pair( sizeof(cl_mem) , (void *)&left.data));
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args.push_back( make_pair( sizeof(cl_int) , (void *)&left.rows));
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args.push_back( make_pair( sizeof(cl_int) , (void *)&left.cols));
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args.push_back( make_pair( sizeof(cl_int) , (void *)&left.step));
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args.push_back( make_pair( sizeof(cl_mem) , (void *)&right.data));
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args.push_back( make_pair( sizeof(cl_int) , (void *)&right.step));
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args.push_back( make_pair( sizeof(cl_mem) , (void *)&data.data));
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args.push_back( make_pair( sizeof(cl_int) , (void *)&data.step));
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args.push_back( make_pair( sizeof(cl_mem) , (void *)&cl_con_struct));
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size_t gt[3] = {left.cols, left.rows, 1}, lt[3] = {16, 16, 1};
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const int OPT_SIZE = 50;
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char cn_opt [OPT_SIZE] = "";
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sprintf( cn_opt, "%s -D CN=%d",
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(data_type == CV_16S ? "-D T_SHORT":"-D T_FLOAT"),
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channels
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);
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openCLExecuteKernel(clCxt, &stereobp, kernelName, gt, lt, args, -1, -1, cn_opt);
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}
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///////////////////////////////////////////////////////////////////////////////////
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/////////////////////////data set down////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////////
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static void data_step_down_call(int dst_cols, int dst_rows, int src_rows,
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const oclMat &src, oclMat &dst, int disp)
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{
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Context *clCxt = src.clCxt;
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int data_type = src.type();
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string kernelName = "data_step_down";
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vector<pair<size_t , const void *> > args;
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args.push_back( make_pair( sizeof(cl_mem) , (void *)&src.data));
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args.push_back( make_pair( sizeof(cl_int) , (void *)&src_rows));
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args.push_back( make_pair( sizeof(cl_mem) , (void *)&dst.data));
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args.push_back( make_pair( sizeof(cl_int) , (void *)&dst_rows));
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args.push_back( make_pair( sizeof(cl_int) , (void *)&dst_cols));
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args.push_back( make_pair( sizeof(cl_int) , (void *)&src.step));
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args.push_back( make_pair( sizeof(cl_int) , (void *)&dst.step));
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args.push_back( make_pair( sizeof(cl_int) , (void *)&disp));
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size_t gt[3] = {dst_cols, dst_rows, 1}, lt[3] = {16, 16, 1};
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const char* t_opt = data_type == CV_16S ? "-D T_SHORT":"-D T_FLOAT";
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openCLExecuteKernel(clCxt, &stereobp, kernelName, gt, lt, args, -1, -1, t_opt);
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}
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/////////////////////////////////////////////////////////////////////////////////
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///////////////////////////live up message////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////////
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static void level_up_message_call(int dst_cols, int dst_rows, int src_rows,
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oclMat &src, oclMat &dst, int ndisp)
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{
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Context *clCxt = src.clCxt;
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int data_type = src.type();
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string kernelName = "level_up_message";
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vector<pair<size_t , const void *> > args;
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args.push_back( make_pair( sizeof(cl_mem) , (void *)&src.data));
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args.push_back( make_pair( sizeof(cl_int) , (void *)&src_rows));
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args.push_back( make_pair( sizeof(cl_int) , (void *)&src.step));
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args.push_back( make_pair( sizeof(cl_mem) , (void *)&dst.data));
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args.push_back( make_pair( sizeof(cl_int) , (void *)&dst_rows));
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args.push_back( make_pair( sizeof(cl_int) , (void *)&dst_cols));
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args.push_back( make_pair( sizeof(cl_int) , (void *)&dst.step));
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args.push_back( make_pair( sizeof(cl_int) , (void *)&ndisp));
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size_t gt[3] = {dst_cols, dst_rows, 1}, lt[3] = {16, 16, 1};
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const char* t_opt = data_type == CV_16S ? "-D T_SHORT":"-D T_FLOAT";
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openCLExecuteKernel(clCxt, &stereobp, kernelName, gt, lt, args, -1, -1, t_opt);
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}
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static void level_up_messages_calls(int dst_idx, int dst_cols, int dst_rows, int src_rows,
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oclMat *mus, oclMat *mds, oclMat *mls, oclMat *mrs,
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int ndisp)
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{
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int src_idx = (dst_idx + 1) & 1;
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level_up_message_call(dst_cols, dst_rows, src_rows,
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mus[src_idx], mus[dst_idx], ndisp);
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level_up_message_call(dst_cols, dst_rows, src_rows,
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mds[src_idx], mds[dst_idx], ndisp);
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level_up_message_call(dst_cols, dst_rows, src_rows,
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mls[src_idx], mls[dst_idx], ndisp);
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level_up_message_call(dst_cols, dst_rows, src_rows,
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mrs[src_idx], mrs[dst_idx], ndisp);
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}
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//////////////////////////////////////////////////////////////////////////////////
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//////////////////////////////cals_all_iterations_call///////////////////////////
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/////////////////////////////////////////////////////////////////////////////////
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static void calc_all_iterations_call(int cols, int rows, oclMat &u, oclMat &d,
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oclMat &l, oclMat &r, oclMat &data,
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int t, int cndisp, float cmax_disc_term,
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float cdisc_single_jump)
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{
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Context *clCxt = l.clCxt;
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int data_type = u.type();
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string kernelName = "one_iteration";
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vector<pair<size_t , const void *> > args;
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args.push_back( make_pair( sizeof(cl_mem) , (void *)&u.data));
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args.push_back( make_pair( sizeof(cl_int) , (void *)&u.step));
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args.push_back( make_pair( sizeof(cl_mem) , (void *)&data.data));
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args.push_back( make_pair( sizeof(cl_int) , (void *)&data.step));
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args.push_back( make_pair( sizeof(cl_mem) , (void *)&d.data));
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args.push_back( make_pair( sizeof(cl_mem) , (void *)&l.data));
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args.push_back( make_pair( sizeof(cl_mem) , (void *)&r.data));
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args.push_back( make_pair( sizeof(cl_int) , (void *)&t));
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args.push_back( make_pair( sizeof(cl_int) , (void *)&cols));
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args.push_back( make_pair( sizeof(cl_int) , (void *)&rows));
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args.push_back( make_pair( sizeof(cl_float) , (void *)&cmax_disc_term));
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args.push_back( make_pair( sizeof(cl_float) , (void *)&cdisc_single_jump));
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size_t gt[3] = {cols, rows, 1}, lt[3] = {16, 16, 1};
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char opt[80] = "";
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sprintf(opt, "-D %s -D CNDISP=%d", data_type == CV_16S ? "T_SHORT":"T_FLOAT", cndisp);
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openCLExecuteKernel(clCxt, &stereobp, kernelName, gt, lt, args, -1, -1, opt);
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}
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static void calc_all_iterations_calls(int cols, int rows, int iters, oclMat &u,
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oclMat &d, oclMat &l, oclMat &r,
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oclMat &data, int cndisp, float cmax_disc_term,
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float cdisc_single_jump)
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{
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for(int t = 0; t < iters; ++t)
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calc_all_iterations_call(cols, rows, u, d, l, r, data, t, cndisp,
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cmax_disc_term, cdisc_single_jump);
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}
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///////////////////////////////////////////////////////////////////////////////
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///////////////////////output///////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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static void output_call(const oclMat &u, const oclMat &d, const oclMat l, const oclMat &r,
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const oclMat &data, oclMat &disp, int ndisp)
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{
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Context *clCxt = u.clCxt;
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int data_type = u.type();
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string kernelName = "output";
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vector<pair<size_t , const void *> > args;
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args.push_back( make_pair( sizeof(cl_mem) , (void *)&u.data));
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args.push_back( make_pair( sizeof(cl_int) , (void *)&u.step));
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args.push_back( make_pair( sizeof(cl_mem) , (void *)&d.data));
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args.push_back( make_pair( sizeof(cl_mem) , (void *)&l.data));
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args.push_back( make_pair( sizeof(cl_mem) , (void *)&r.data));
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args.push_back( make_pair( sizeof(cl_mem) , (void *)&data.data));
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args.push_back( make_pair( sizeof(cl_mem) , (void *)&disp.data));
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args.push_back( make_pair( sizeof(cl_int) , (void *)&disp.rows));
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args.push_back( make_pair( sizeof(cl_int) , (void *)&disp.cols));
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args.push_back( make_pair( sizeof(cl_int) , (void *)&disp.step));
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args.push_back( make_pair( sizeof(cl_int) , (void *)&ndisp));
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size_t gt[3] = {disp.cols, disp.rows, 1}, lt[3] = {16, 16, 1};
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const char* t_opt = data_type == CV_16S ? "-D T_SHORT":"-D T_FLOAT";
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openCLExecuteKernel(clCxt, &stereobp, kernelName, gt, lt, args, -1, -1, t_opt);
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}
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}
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}
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}
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namespace
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{
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const float DEFAULT_MAX_DATA_TERM = 10.0f;
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const float DEFAULT_DATA_WEIGHT = 0.07f;
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const float DEFAULT_MAX_DISC_TERM = 1.7f;
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const float DEFAULT_DISC_SINGLE_JUMP = 1.0f;
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}
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void cv::ocl::StereoBeliefPropagation::estimateRecommendedParams(int width, int height, int &ndisp, int &iters, int &levels)
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{
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ndisp = width / 4;
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if ((ndisp & 1) != 0)
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ndisp++;
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int mm = ::max(width, height);
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iters = mm / 100 + 2;
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levels = (int)(::log(static_cast<double>(mm)) + 1) * 4 / 5;
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if (levels == 0) levels++;
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}
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cv::ocl::StereoBeliefPropagation::StereoBeliefPropagation(int ndisp_, int iters_, int levels_, int msg_type_)
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: ndisp(ndisp_), iters(iters_), levels(levels_),
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max_data_term(DEFAULT_MAX_DATA_TERM), data_weight(DEFAULT_DATA_WEIGHT),
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max_disc_term(DEFAULT_MAX_DISC_TERM), disc_single_jump(DEFAULT_DISC_SINGLE_JUMP),
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msg_type(msg_type_), datas(levels_)
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{
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}
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cv::ocl::StereoBeliefPropagation::StereoBeliefPropagation(int ndisp_, int iters_, int levels_, float max_data_term_, float data_weight_, float max_disc_term_, float disc_single_jump_, int msg_type_)
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: ndisp(ndisp_), iters(iters_), levels(levels_),
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max_data_term(max_data_term_), data_weight(data_weight_),
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max_disc_term(max_disc_term_), disc_single_jump(disc_single_jump_),
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msg_type(msg_type_), datas(levels_)
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{
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}
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namespace
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{
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class StereoBeliefPropagationImpl
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{
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public:
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StereoBeliefPropagationImpl(StereoBeliefPropagation &rthis_,
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oclMat &u_, oclMat &d_, oclMat &l_, oclMat &r_,
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oclMat &u2_, oclMat &d2_, oclMat &l2_, oclMat &r2_,
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vector<oclMat> &datas_, oclMat &out_)
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: rthis(rthis_), u(u_), d(d_), l(l_), r(r_), u2(u2_), d2(d2_), l2(l2_), r2(r2_), datas(datas_), out(out_),
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zero(Scalar::all(0)), scale(rthis_.msg_type == CV_32F ? 1.0f : 10.0f)
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{
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CV_Assert(0 < rthis.ndisp && 0 < rthis.iters && 0 < rthis.levels);
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CV_Assert(rthis.msg_type == CV_32F || rthis.msg_type == CV_16S);
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CV_Assert(rthis.msg_type == CV_32F || (1 << (rthis.levels - 1)) * scale * rthis.max_data_term < numeric_limits<short>::max());
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}
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void operator()(const oclMat &left, const oclMat &right, oclMat &disp)
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{
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CV_Assert(left.size() == right.size() && left.type() == right.type());
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CV_Assert(left.type() == CV_8UC1 || left.type() == CV_8UC3 || left.type() == CV_8UC4);
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rows = left.rows;
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cols = left.cols;
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int divisor = (int)pow(2.f, rthis.levels - 1.0f);
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int lowest_cols = cols / divisor;
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int lowest_rows = rows / divisor;
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const int min_image_dim_size = 2;
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CV_Assert(min(lowest_cols, lowest_rows) > min_image_dim_size);
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init();
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datas[0].create(rows * rthis.ndisp, cols, rthis.msg_type);
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datas[0].setTo(Scalar_<short>::all(0));
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cv::ocl::stereoBP::comp_data_call(left, right, datas[0], rthis.ndisp, rthis.max_data_term, scale * rthis.data_weight);
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calcBP(disp);
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}
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void operator()(const oclMat &data, oclMat &disp)
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{
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CV_Assert((data.type() == rthis.msg_type) && (data.rows % rthis.ndisp == 0));
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rows = data.rows / rthis.ndisp;
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cols = data.cols;
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int divisor = (int)pow(2.f, rthis.levels - 1.0f);
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int lowest_cols = cols / divisor;
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int lowest_rows = rows / divisor;
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const int min_image_dim_size = 2;
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CV_Assert(min(lowest_cols, lowest_rows) > min_image_dim_size);
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init();
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datas[0] = data;
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calcBP(disp);
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}
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private:
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void init()
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{
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u.create(rows * rthis.ndisp, cols, rthis.msg_type);
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d.create(rows * rthis.ndisp, cols, rthis.msg_type);
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l.create(rows * rthis.ndisp, cols, rthis.msg_type);
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r.create(rows * rthis.ndisp, cols, rthis.msg_type);
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if (rthis.levels & 1)
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{
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//can clear less area
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u = zero;
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d = zero;
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l = zero;
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r = zero;
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}
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if (rthis.levels > 1)
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{
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int less_rows = (rows + 1) / 2;
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int less_cols = (cols + 1) / 2;
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u2.create(less_rows * rthis.ndisp, less_cols, rthis.msg_type);
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d2.create(less_rows * rthis.ndisp, less_cols, rthis.msg_type);
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l2.create(less_rows * rthis.ndisp, less_cols, rthis.msg_type);
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r2.create(less_rows * rthis.ndisp, less_cols, rthis.msg_type);
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if ((rthis.levels & 1) == 0)
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{
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u2 = zero;
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d2 = zero;
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l2 = zero;
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r2 = zero;
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}
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}
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cv::ocl::stereoBP::load_constants(rthis.ndisp, rthis.max_data_term, scale * rthis.data_weight,
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scale * rthis.max_disc_term, scale * rthis.disc_single_jump);
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|
|
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datas.resize(rthis.levels);
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cols_all.resize(rthis.levels);
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rows_all.resize(rthis.levels);
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|
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cols_all[0] = cols;
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rows_all[0] = rows;
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}
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|
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void calcBP(oclMat &disp)
|
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{
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using namespace cv::ocl::stereoBP;
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|
|
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for (int i = 1; i < rthis.levels; ++i)
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|
{
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cols_all[i] = (cols_all[i - 1] + 1) / 2;
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|
rows_all[i] = (rows_all[i - 1] + 1) / 2;
|
|
|
|
datas[i].create(rows_all[i] * rthis.ndisp, cols_all[i], rthis.msg_type);
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datas[i].setTo(Scalar_<short>::all(0));
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|
|
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data_step_down_call(cols_all[i], rows_all[i], rows_all[i - 1],
|
|
datas[i - 1], datas[i], rthis.ndisp);
|
|
}
|
|
|
|
oclMat mus[] = {u, u2};
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|
oclMat mds[] = {d, d2};
|
|
oclMat mrs[] = {r, r2};
|
|
oclMat mls[] = {l, l2};
|
|
|
|
int mem_idx = (rthis.levels & 1) ? 0 : 1;
|
|
|
|
for (int i = rthis.levels - 1; i >= 0; --i)
|
|
{
|
|
// for lower level we have already computed messages by setting to zero
|
|
if (i != rthis.levels - 1)
|
|
level_up_messages_calls(mem_idx, cols_all[i], rows_all[i], rows_all[i + 1],
|
|
mus, mds, mls, mrs, rthis.ndisp);
|
|
|
|
calc_all_iterations_calls(cols_all[i], rows_all[i], rthis.iters, mus[mem_idx],
|
|
mds[mem_idx], mls[mem_idx], mrs[mem_idx], datas[i],
|
|
rthis.ndisp, scale * rthis.max_disc_term,
|
|
scale * rthis.disc_single_jump);
|
|
|
|
mem_idx = (mem_idx + 1) & 1;
|
|
}
|
|
if (disp.empty())
|
|
disp.create(rows, cols, CV_16S);
|
|
|
|
out = ((disp.type() == CV_16S) ? disp : (out.create(rows, cols, CV_16S), out));
|
|
out = zero;
|
|
|
|
output_call(u, d, l, r, datas.front(), out, rthis.ndisp);
|
|
|
|
if (disp.type() != CV_16S)
|
|
out.convertTo(disp, disp.type());
|
|
|
|
release_constants();
|
|
}
|
|
StereoBeliefPropagationImpl& operator=(const StereoBeliefPropagationImpl&);
|
|
|
|
StereoBeliefPropagation &rthis;
|
|
|
|
oclMat &u;
|
|
oclMat &d;
|
|
oclMat &l;
|
|
oclMat &r;
|
|
|
|
oclMat &u2;
|
|
oclMat &d2;
|
|
oclMat &l2;
|
|
oclMat &r2;
|
|
|
|
vector<oclMat> &datas;
|
|
oclMat &out;
|
|
|
|
const Scalar zero;
|
|
const float scale;
|
|
|
|
int rows, cols;
|
|
|
|
vector<int> cols_all, rows_all;
|
|
};
|
|
}
|
|
|
|
void cv::ocl::StereoBeliefPropagation::operator()(const oclMat &left, const oclMat &right, oclMat &disp)
|
|
{
|
|
::StereoBeliefPropagationImpl impl(*this, u, d, l, r, u2, d2, l2, r2, datas, out);
|
|
impl(left, right, disp);
|
|
}
|
|
|
|
void cv::ocl::StereoBeliefPropagation::operator()(const oclMat &data, oclMat &disp)
|
|
{
|
|
::StereoBeliefPropagationImpl impl(*this, u, d, l, r, u2, d2, l2, r2, datas, out);
|
|
impl(data, disp);
|
|
}
|