I'm using this code to detect green color in the image.
The problem is this iteration is really slow.
How to make it faster? If it is using numpy, How to do it in numpy way?
def convertGreen(rawimg):
width, height, channels = rawimg.shape
size = (w, h, channels) = (width, height, 1)
processedimg = np.zeros(size, np.uint8)
for wimg in range(0,width):
for himg in range(0,height):
blue = rawimg.item(wimg,himg,0)
green = rawimg.item(wimg,himg,1)
red = rawimg.item(wimg,himg,2)
exg = 2*green-red-blue
if(exg > 50):
processedimg.itemset((wimg,himg,0),exg)
return processedimg
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