pixel_t get_color(array_t *image, size_t bitdepth)
{
uint32_t pixel_num = 0;
lab_pixel_t *avg = NULL;
for (size_t i = 0; i < image->size; i++)
{
array_t *row = ((array_t *) image->ptr);
for (size_t j = 0; j < row->size; j++)
{
pixel_num++;
pixel_t rgb = ((pixel_t *) row->ptr)[j];
xyz_pixel_t xyz = rgb_to_xyz(rgb);
lab_pixel_t lab = xyz_to_lab(xyz);
if (avg == NULL)
{
avg = malloc(sizeof(lab_pixel_t));
*avg = lab;
}
else
{
avg->L = running_avg(avg->L, lab->L, pixel_num);
avg->a = running_avg(avg->a, lab->a, pixel_num);
avg->b = running_avg(avg->b, lab->b, pixel_num);
}
}
}
xyz_pixel_t xyz_avg = lab_to_xyz(*avg);
return xyz_to_rgb(xyz_avg);
}
inline value_type lab_to_rgb(const value_type& v) {
value_type lab = v - value_type(0,128,128);
return xyz_to_rgb(lab_to_xyz(lab));
}
