Complete this program with a sharpen function that sharpens the edge of an image while keeping its original colors: from images import Image def main(): filename = input("Enter the image file name: ") image = Image(filename) newimage = sharpen(image, 20, 15) newimage.draw() if __name__ == "__main__": main()

def sharpen(image, threshhold, factor):
    for y in range(image.getHeight()):
        for x in range(image.getWidth()):
            pixel = image.getPixel(x, y)
            if y == 0 or x == 0 or y == image.getHeight()-1 or x == image.getWidth() -1:
                continue
            right = image.getPixel(x+1, y)
            left = image.getPixel(x-1, y)
            top = image.getPixel(x, y-1)
            bottom = image.getPixel(x, y+1)
            r = right.getRed() - pixel.getRed()
            g = right.getGreen() - pixel.getGreen()
            b = right.getBlue() - pixel.getBlue()
            if r > threshhold or r < -threshhold:
                pixel.setRed(pixel.getRed() + factor * r)
            if g > threshhold or g < -threshhold:
                pixel.setGreen(pixel.get