image_util.h

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#ifndef IMAGE_UTIL_H
#define IMAGE_UTIL_H


#include <jwsc/config.h>

#include <stdlib.h>

#include "jwsc/base/error.h"
#include "jwsc/matrix/matrix.h"
#include "jwsc/image/image.h"


#ifdef __cplusplus
namespace jwsc {
extern "C" {
#endif


Error* down_sample_image_f
(
    Image_f**      img_out, 
    const Image_f* img_in, 
    float          row_factor,
    float          col_factor
);

void extend_image_f
(
    Image_f**      img_out, 
    const Image_f* img_in, 
    uint32_t       row_padding,
    uint32_t       col_padding
);

Error* crop_image_f
(
    Image_f**      img_out, 
    const Image_f* img_in, 
    uint32_t       row,
    uint32_t       col,
    uint32_t       num_rows,
    uint32_t       num_cols
);

void threshold_image_f
(
    Matrix_f**     mat_out, 
    const Image_f* img_in,
    float          t
);

void threshold_matrix_f
(
    Matrix_f**      mat_out, 
    const Matrix_f* mat_in,
    float           t
);

void dynamically_threshold_image_f
(
    Matrix_f**     mat_out, 
    const Image_f* img_in
);

void dynamically_threshold_matrix_f
(
    Matrix_f**      mat_out, 
    const Matrix_f* mat_in
);

#ifdef __cplusplus
}
}
#endif


#endif