通过变量输入jython / python来放大和缩小图像

时间:2017-01-17 00:27:30

标签: python image jython image-manipulation jes

对于编程很新,并且在没有使用PIL等的情况下无法找到任何方法,如果我错了,请指出我正确的方向!

我需要修改以下代码,以便将图像以缩放输入选择的大小复制到TGT。在这个阶段,我已经得到它,以便将图片复制到画布上,画布的大小由缩放输入决定,但无法锻炼如何使图像本身缩放。

非常感谢任何帮助。

def driver():
    pic = makePicture(pickAFile())
    repaint(pic)
    modifiedPic = scale(pic,2.0)
    repaint(modifiedPic)

def scale(srcPic,scale):
    xStart = 0
    yStart = 0
    xEnd = getWidth(srcPic)
    yEnd = getHeight(srcPic)
    width = getWidth(srcPic)
    height = getHeight(srcPic)
    tgt = makeEmptyPicture(width*int(scale),height*int(scale))

    for x in range(0,width):
        for y in range(0,height):
            pxSrc=getPixel(srcPic,x,y)
            pxTgt=getPixel(tgt,x,y)
            setColor(pxTgt,getColor(pxSrc))

    srcWidth = xEnd -xStart
    srcHeight = yEnd - yStart

    tgtWidth = int(srcWidth*scale)
    tgtHeight = int(srcHeight*scale)

    for y in range(0,tgtHeight):
        for x in range(0,tgtWidth):
            pxSrc=getPixel(srcPic,int(x/scale)+xStart,int(y/scale)+yStart)
            pxTgt=getPixel(tgt,int(xStart*scale),int(yStart*scale))
            setColor(pxTgt,getColor(pxSrc))
    return tgt

1 个答案:

答案 0 :(得分:0)

试试这个

def scale(srcPic,scale):
  width = getWidth(srcPic)
  height = getHeight(srcPic)
  tgt = makeEmptyPicture(width*int(scale),height*int(scale))

  # get the pixel from original source
  for x in range(0, width):
    for y in range(0,height):
      pxSrc=getPixel(srcPic,x,y)

      #copy source pixel by scale amount along x and y axis
      for i in range(x * int(scale), x * int(scale) + int(scale)):
        for j in range(y * int(scale), y * int(scale) + int(scale)):
          pxTgt=getPixel(tgt,i,j)
          setColor(pxTgt,getColor(pxSrc))

  return txt