SharedSmoothImageFuncts.h

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/*
Copyright (C) 2024 Scott Grauer-Gray
 
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
 
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
 
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
*/
 
#ifndef SHAREDSMOOTHIMAGEFUNCTS_H_
#define SHAREDSMOOTHIMAGEFUNCTS_H_
 
#include "RunImp/UtilityFuncts.h"
#include "RunEval/RunTypeConstraints.h"
#include "BpImageProcessing/BpImageConstraints.h"
#include "SharedBpUtilFuncts.h"
 
namespace beliefprop {
 
template <BpImData_t T>
ARCHITECTURE_ADDITION inline void FilterImageAcrossProcessPixel(
  unsigned int x_val, unsigned int y_val, const T* image_to_filter,
  float* filtered_image, unsigned int width_images, unsigned int height_images,
  const float* image_filter, unsigned int size_filter)
{
  float filtered_pixel_val = image_filter[0] * ((float)image_to_filter[y_val*width_images + x_val]);
 
  for (unsigned int i = 1; i < size_filter; i++) {
    filtered_pixel_val +=
      image_filter[i] *
      (((float)image_to_filter[y_val*width_images + (unsigned int)util_functs::GetMax((int)x_val - (int)i, 0)]) +
      ((float)image_to_filter[y_val*width_images + util_functs::GetMin(x_val + i, width_images - 1)]));
  }
 
  filtered_image[y_val*width_images + x_val] = filtered_pixel_val;
}
 
template <BpImData_t T>
ARCHITECTURE_ADDITION inline void FilterImageVerticalProcessPixel(
  unsigned int x_val, unsigned int y_val, const T* image_to_filter,
  float* filtered_image, unsigned int width_images, unsigned int height_images,
  const float* image_filter, unsigned int size_filter)
{
  float filtered_pixel_val = image_filter[0] * ((float)image_to_filter[y_val*width_images + x_val]);
 
  for (unsigned int i = 1; i < size_filter; i++) {
    filtered_pixel_val +=
      image_filter[i] *
      ((float)(image_to_filter[(unsigned int)util_functs::GetMax((int)y_val - (int)i, 0) * width_images + x_val]) +
      ((float)image_to_filter[util_functs::GetMin(y_val + i, height_images - 1) * width_images + x_val]));
  }
 
  filtered_image[y_val * width_images + x_val] = filtered_pixel_val;
}
 
}
 
#endif /* SHAREDSMOOTHIMAGEFUNCTS_H_ */