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3rdparty/opencv-4.5.4/modules/dnn/src/opencl/col2im.cl 3.59 KB
f4334277   Hu Chunming   提交3rdparty
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  /*M///////////////////////////////////////////////////////////////////////////////////////
  //
  //  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.
  //
  //
  //                           License Agreement
  //                For Open Source Computer Vision Library
  //
  // Copyright (C) 2017, Intel Corporation, all rights reserved.
  // Copyright (c) 2016-2017 Fabian David Tschopp, all rights reserved.
  // Third party copyrights are property of their respective owners.
  //
  // Redistribution and use in source and binary forms, with or without modification,
  // are permitted provided that the following conditions are met:
  //
  //   * Redistribution's of source code must retain the above copyright notice,
  //     this list of conditions and the following disclaimer.
  //
  //   * Redistribution's in binary form must reproduce the above copyright notice,
  //     this list of conditions and the following disclaimer in the documentation
  //     and/or other materials provided with the distribution.
  //
  //   * The name of the copyright holders may not be used to endorse or promote products
  //     derived from this software without specific prior written permission.
  //
  // This software is provided by the copyright holders and contributors "as is" and
  // any express or implied warranties, including, but not limited to, the implied
  // warranties of merchantability and fitness for a particular purpose are disclaimed.
  // In no event shall the Intel Corporation or contributors be liable for any direct,
  // indirect, incidental, special, exemplary, or consequential damages
  // (including, but not limited to, procurement of substitute goods or services;
  // 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
  // the use of this software, even if advised of the possibility of such damage.
  //
  //M*/
  
  __kernel void col2im(const int n, __global const T* data_col,
                       const int data_col_offset,
                       const int channels,
                       const int height, const int width,
                       const int height_col, const int width_col,
                       const int coeff_h, const int coeff_w,
                       __global const T* biasvec,
                       const int bias_offset,
                       __global T* data_im,
                       const int data_im_offset)
  {
      data_col = data_col + data_col_offset;
      biasvec = biasvec + bias_offset;
      data_im = data_im + data_im_offset;
      int index = get_global_id(0);
  
      if(index < n)
      {
          T val = 0.f;
          int w = index % width + PAD_W;
          int h = (index / width) % height + PAD_H;
          int c = index / (width * height);
          int h_col_start = (h < KERNEL_H) ? 0 : (h - KERNEL_H) / STRIDE_H + 1;
          int h_col_end = min(h / STRIDE_H + 1, height_col);
          int plane_size_col = height_col * width_col;
          int offset = (c * KERNEL_H * KERNEL_W + h * KERNEL_W + w) * plane_size_col;
  
          int w_col_start = (w < KERNEL_W) ? 0 : (w - KERNEL_W) / STRIDE_W + 1;
          int w_col_end = min(w / STRIDE_W + 1, width_col);
  
          for (int h_col = h_col_start; h_col < h_col_end; ++h_col)
              for (int w_col = w_col_start; w_col < w_col_end; ++w_col)
                  val += data_col[offset + h_col * coeff_h + w_col * coeff_w];
  
          data_im[index] = val + biasvec[c];
      }
  }