python生成图片

import cv2.cv as cv  saveImagePath = 'E:/ScreenTestImages/'  colorRed = [0,0,255]  colorGreen = [0,255,0]  colorBlue = [255,0,0]  colorWhite = [255,255,255]  colorBlack = [0,0,0]  colorAqua = [255,255,0]  colorFuchsia = [255,0,255]  colorYellow = [0,255,255]  stardardColors = [colorBlue,colorGreen,colorAqua,colorRed,colorFuchsia,colorYellow,colorWhite]  def createImg(depth=3):      return cv.CreateImage((800,480),8,depth)  def saveImageFile(typeName,img):      filename = saveImagePath + typeName + '.png'      cv.SaveImage(filename,img)      print typeName+'.png','\t\t...\tok'  def createOneColorImage(color):      img = createImg()      cv.Set(img,color)      return img  def create64GrayImage():      img = createImg(1)      cv.SetZero(img)      for xPos in range(0,64):          cv.SetImageROI(img,(int(12.5*xPos),0,800,480))          cv.Set(img,xPos*255/63)          cv.ResetImageROI(img)      return img  def createCheckBoardPattern(isReserved=False):      img = createImg(1)      boolColor = True      numsX = 4      numsY = 4      pixsX = 800/numsX      pixsY = 480/numsY      for x in range(0,numsX):          for y in range(0,numsY):              cv.SetImageROI(img,(x*pixsX,y*pixsY,(x+1)*pixsX,(y+1)*pixsY))              boolColor = not (x%2) ^ (y%2) ^ isReserved                          cv.Set(img,255*boolColor)              cv.ResetImageROI(img)                 return img  def createStardardImage():      img = createImg()      pixs = 800./7      for i in range(0,7):          cv.SetImageROI(img,(int(i*pixs),0,int(i*pixs+pixs),480))          cv.Set(img,stardardColors[i])          cv.ResetImageROI(img)      return img  if __name__ == '__main__':      print 'Start Gen Test Screen Files ...'      saveImageFile('red',createOneColorImage(colorRed))      saveImageFile('green',createOneColorImage(colorGreen))      saveImageFile('blue',createOneColorImage(colorBlue))          saveImageFile('white',createOneColorImage(colorWhite))      saveImageFile('black',createOneColorImage(colorBlack))      saveImageFile('64gray',create64GrayImage())      saveImageFile('checkboard Pattern',createCheckBoardPattern())      saveImageFile('checkboard Pattern(inverted)',createCheckBoardPattern(True))      saveImageFile('standard',createStardardImage())      print 'Generate Success!'