Optimize get_avg_pixels

[kolayne]

Can we delegate the following piece of code to numpy and thus speed it up?

find_most_similar_image/find_most_similar_image.py

Lines 69 to 84 in b136fa0

	def get_avg_pixels(img, split_depth=2):
	ans = np.zeros((split_depth, split_depth, 3))
	img = np.asarray(img)
	x_size, y_size, _ = img.shape
	for x_multiplier in range(split_depth):
	x_range_from = int(x_size / split_depth * x_multiplier)
	x_range_to = int(x_size / split_depth * (x_multiplier + 1))
	for y_multiplier in range(split_depth):
	y_range_from = int(y_size / split_depth * y_multiplier)
	y_range_to = int(y_size / split_depth * (y_multiplier + 1))
	ans[x_multiplier, y_multiplier] = avg(img[x_range_from:x_range_to, y_range_from:y_range_to].ravel())
	return ans