def test_chunk_transform():
img = _img()
assert np.sum(img == 0) != 0 # assert that there are some 0,0,0 pixels
zero_at = np.where(img == 0)
def transform(chunk):
chunk[chunk == 0] = 100
return chunk
chunks = nphusl.chunk_img(img, 10)
nphusl.chunk_transform(transform, chunks, img)
assert np.sum(img == 0) == 0
assert np.all(img[zero_at] == 100)
def main(img_int, chunksize):
img_float = img_int / 255.0
out = np.zeros(img_float.shape, dtype=np.float)
chunks = nphusl.chunk_img(img_float, chunksize=chunksize)
nphusl.chunk_transform(nphusl.rgb_to_husl, chunks, out)