25 lines
617 B
C
25 lines
617 B
C
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#include <stdint.h>
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#include "sobel_rgb2g.h"
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void rgb2grayscale (int width, int height, uint8_t const *rgb_source,
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uint8_t *gs_dest )
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{
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int loop, j;
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uint8_t temp;
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unsigned int greyscale;
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int max_loop = width * height * 3;
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for (loop = 0, j = 0; loop < max_loop; loop +=3, j++) {
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temp = rgb_source[loop];
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greyscale= (temp*30)/100;
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temp = (rgb_source[loop + 1]);
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greyscale += (temp*59)/100;
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temp = (rgb_source[loop + 2]);
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greyscale += (temp*11)/100;
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gs_dest[j] = (uint8_t)greyscale;
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}
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}
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