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()

from images import Image

def sharpen(img, threshold, amount):
  newimg = img.clone()
  w = img.getWidth()
  h = img.getHeight()
  for x in range(1, w-1):
    for y in range(1, h-1):
      p = img.getPixel(x, y)
      left = img.getPixel(x-1, y)
      above = img.getPixel(x, y-1)
      right = img.getPixel(x+1, y)
      below = img.getPixel(x, y+1)
      r = p.getRed()
      g = p.getGreen()
      b = p.getBlue()
      leftr = left.getRed()
      leftg = left.getGreen()
      leftb = left.getBlue()
      abover = above.getRed()
      aboveg = above.getGreen()
      aboveb = above.getBlue()
      rightr = right.getRed()
      rightg = right.getGreen()