把图片列表合成一个GIF动画图片

import os
from PIL import Image
import images2gif

#type 合成GIF分类 
#0：图片缩放到最大宽度*最大高度（长方形）、并粘贴到最大宽度*最大高度（长方形）的白色背景图片中、居中后合成
#1：图片缩放到最大长度（正方形）、并粘贴到最大长度（正方形）的白色背景图片中、居中后合成
#2：图片不缩放、并粘贴到最大宽度*最大高度（长方形）的白色背景图片中、居中后合成
#3：图片不缩放、并粘贴到最大长度（正方形）的白色背景图片中、居中后合成
#4：原图直接合成(按宽度排序、不缩放也不粘贴到新的白色背景图片中)
#5：原图直接合成(按高度排序、不缩放也不粘贴到新的白色背景图片中)
def GetGifAnimationFromImages(targetGifFilePath, srcImageFilePaths, type = 0):
    #用来合成的图片
    images = []
    
    #取得所有图片中最大长度（宽度、高度）
    maxWidthAndHeight = 1
    #最大宽度和高度
    maxWidth = 1
    maxHeight = 1
    #取得图片按宽度从大到小排序的路径顺序
    widthAndFilePaths = []
    #取得图片按高度从大到小排序的路径顺序
    heightAndFilePaths = []
    
    for imageFilePath in srcImageFilePaths:
        fp = open(imageFilePath, "rb")
        width,height = Image.open(fp).size
        widthAndFilePaths.append((width, imageFilePath))
        heightAndFilePaths.append((height, imageFilePath))
        maxWidth = max(maxWidth, width)
        maxHeight = max(maxHeight, height)
        fp.close()

    maxWidthAndHeight = max(maxWidthAndHeight, maxWidth, maxHeight)
        
    #降序排列
    widthAndFilePaths.sort(key=lambda item: item[0], reverse=True)
    heightAndFilePaths.sort(key=lambda item: item[0], reverse=True)
    
    if type == 4 or type == 5:
        #原图直接合成(按宽度排序)
        if type == 4:
            for widthAndFilePath in widthAndFilePaths:
                img = Image.open(widthAndFilePath[1])
                images.append(img)
        #原图直接合成(按高度排序)
        if type == 5:
            for heightAndFilePath in heightAndFilePaths:
                img = Image.open(heightAndFilePath[1])
                images.append(img)
    else:
        for imageFilePath in srcImageFilePaths:
            fp = open(imageFilePath, "rb")
            img = Image.open(fp)
            width,height = img.size
            #生成空的白色背景图片
            if type == 0 or type == 2:  
                #长方形
                imgResizeAndCenter = Image.new("RGB", [maxWidth,maxHeight], (255,255,255))
            elif type == 1 or type == 3:
                #正方形
                imgResizeAndCenter = Image.new("RGB", [maxWidthAndHeight,maxWidthAndHeight], (255,255,255))

            if type == 0:
                #宽度/最大宽度>=高度/最大高度，使用小的缩放比例
                if maxWidth / width >= maxHeight / height:
                    resizeImg = img.resize((width * maxHeight / height, maxHeight),Image.ANTIALIAS)
                    imgResizeAndCenter.paste(resizeImg, ((maxWidth - width * maxHeight / height)/ 2,0))
                else:
                    resizeImg = img.resize((maxWidth, height * maxWidth / width),Image.ANTIALIAS)
                    imgResizeAndCenter.paste(resizeImg, (0,(maxHeight - height * maxWidth / width)/ 2))
            if type == 1:
                #宽度>=高度，按宽度缩放到最大长度
                if width >= height:
                    resizeImg = img.resize((maxWidthAndHeight, height * maxWidthAndHeight / width),Image.ANTIALIAS)
                    imgResizeAndCenter.paste(resizeImg, (0,(maxWidthAndHeight - height * maxWidthAndHeight / width)/ 2))
                else:
                    resizeImg = img.resize((width * maxWidthAndHeight / height, maxWidthAndHeight),Image.ANTIALIAS)
                    imgResizeAndCenter.paste(resizeImg, ((maxWidthAndHeight - width * maxWidthAndHeight / height)/ 2, 0))
            elif type == 2:
                imgResizeAndCenter.paste(img, ((maxWidth - width) / 2,(maxHeight - height) / 2))
            elif type == 3:
                imgResizeAndCenter.paste(img, ((maxWidthAndHeight - width) / 2,(maxWidthAndHeight - height) / 2))
                
    #        #保存缩放居中后的图片
    #        imgResizeAndCenter.convert("RGB").save(os.path.dirname(imageFilePath) + os.sep + "ResizeAndCenter" + os.path.basename(imageFilePath), 'jpeg')
            images.append(imgResizeAndCenter)
            fp.close()
        
    images2gif.writeGif(targetGifFilePath, images, duration=1, nq=0.1)

#取得目录下面的文件列表
def GetDirImageList(dir_proc, recusive = True):
    resultList = []
    for file in os.listdir(dir_proc):
        if os.path.isdir(os.path.join(dir_proc, file)):
            if (recusive):
                resultList.append(GetDirImageList(os.path.join(dir_proc, file), recusive))
            continue

        resultList.append(os.path.join(dir_proc, file))
        
    return resultList

if __name__ == "__main__":
    GetGifAnimationFromImages(r"D:\hecheng.gif", [r"D:\a.jpg", r"D:\b.jpg", r"D:\c.jpg"])
    GetGifAnimationFromImages(r"D:\hecheng1.gif", [r"D:\a.jpg", r"D:\b.jpg", r"D:\b.jpg", r"D:\c.jpg"], 1)
    GetGifAnimationFromImages(r"D:\hecheng2.gif", [r"D:\a.jpg", r"D:\b.jpg", r"D:\c.jpg"], 2)
    GetGifAnimationFromImages(r"D:\hecheng3.gif", [r"D:\a.jpg", r"D:\b.jpg", r"D:\c.jpg"], 3)
    GetGifAnimationFromImages(r"D:\hecheng4.gif", [r"D:\a.jpg", r"D:\b.jpg", r"D:\c.jpg"], 4)
    GetGifAnimationFromImages(r"D:\hecheng5.gif", [r"D:\a.jpg", r"D:\b.jpg", r"D:\c.jpg"], 5)
    
    GetGifAnimationFromImages(r"D:\hechengTest.gif", GetDirImageList(r"D:\GifMarker"), type = 4)

高手~ 请帮忙看个问题
-分析图像数据的问题

http://www.iteye.com/problems/55830

图像的色调会改变吗？跟原来一样不