gaussian_filter.h

#ifndef GAUSSIAN_FILTER_H
#define GAUSSIAN_FILTER_H
 
#ifdef __cplusplus
#include <iostream>
#include "../image.h"
#endif

namespace gaussian_filter {

inline std::vector<std::vector<int32_t>>
apply_gaussian_filter(const std::vector<std::vector<int32_t>>& image) {
    Image img(image);
    std::vector<std::vector<float>> kernel = {{1.0 / 16, 2.0 / 16, 1.0 / 16},
                                              {2.0 / 16, 4.0 / 16, 2.0 / 16},
                                              {1.0 / 16, 2.0 / 16, 1.0 / 16}};
    return img.apply_filter2d(kernel).get_2d_array();
}
} // namespace gaussian_filter
 
#endif