I MAGE P ROCESSING IN CS1 Brad Miller David Ranum Luther College.

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I MAGE P ROCESSING IN CS1 Brad Miller David Ranum Luther College

I MAGE P ROCESSING WITH C I MAGE Window Image File Image Empty Image List Image Pixel Does not require PIL Images getWidth, getHeight getPixel,setPixel Pixels getRed, setRed getGreen, setGreen getBlue, setBlue ClassesMethods

def blackWhite(pic): bwpic = EmptyImage(pic.getWidth(), pic.getHeight()) for row in range(pic.getHeight()): for col in range(pic.getWidth()): thepixel = pic.getPixel(col,row) r = thepixel.getRed() g = thepixel.getGreen() b = thepixel.getBlue() gray = (r + g + b)//3 if gray <= 127: p = Pixel(0,0,0) else: p = Pixel(255,255,255) bwpic.setPixel(col,row,p) return bwpic

E DGE D ETECTION Iteration Patterns Four levels of nesting Setting boundaries Edge Cases Sum of Products

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