Function alphaBlend

examples/image_processing/image_editing.cpp:66–70

* a - foregound image * b - background image * mask - mask map * */

 * mask - mask map
 * */
array alphaBlend(const array &a, const array &b, const array &mask) {
    array tiledMask;
    if (mask.dims(2) != a.dims(2)) tiledMask = tile(mask, 1, 1, a.dims(2));
    return a * tiledMask + (1.0f - tiledMask) * b;
}

void normalizeImage(array &in) {
    float min = af::min<float>(in);