python生成图片详解编程语言

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!'