Question

我试图减少下半部分图像中的红色，我感到难过，这是我想出的代码，只是想知道是否有人可以指出为什么它不适合我？

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Answer 1

我相信我已经得到了答案，这会将图像下半部分的红色减少到原来的70％。

def decreaseRed(pict):

  width=getWidth(pict)
  height=getHeight(pict)
  canvas=makeEmptyPicture(width,height)
  for x in range(0, width):
    for y in range(0, height):
      pixel = getPixel(pict,x,y)
      newRed = getRed(pixel)
      newGreen = getGreen(pixel)
      newBlue = getBlue(pixel)
      newColor = makeColor(newRed,newGreen,newBlue)
      pixelCanvas = getPixel(canvas,x,y)
      setColor(pixelCanvas,newColor)
    for y in range(height/2,height):
      pixel = getPixel(pict,x,y)
      newRed = getRed(pixel)*0.7
      newGreen = getGreen(pixel)
      newBlue = getBlue(pixel)
      newColor = makeColor(newRed,newGreen,newBlue)
      pixelCanvas = getPixel(canvas,x,y)
      setColor(pixelCanvas,newColor)
  return canvas
file=getMediaPath("test.jpg")
pict=makePicture(file)

show(decreaseRed(pict))

Jython：减少半个图像的颜色

1 个答案: