python处理.seq文件

# Deal with .seq format for video sequence
# Author: Kaij
# The .seq file is combined with images,
# so I split the file into several images with the image prefix 
# "xFFxD8xFFxE0x00x10x4Ax46x49x46".

import os.path
import fnmatch
import shutil

def open_save(file,savepath):
    # read .seq file, and save the images into the savepath
    
    f = open(file,'rb')
    string = str(f.read())
    splitstring = "xFFxD8xFFxE0x00x10x4Ax46x49x46"
    # split .seq file into segment with the image prefix
    strlist=string.split(splitstring)
    f.close()
    count = 0
    # delete the image folder path if it exists
    if os.path.exists(savepath):
        shutil.rmtree(savepath)
    # create the image folder path
    if not os.path.exists(savepath):
        os.mkdir(savepath)
    # deal with file segment, every segment is an image except the first one
    for img in strlist:
        filename = str(count)+'.jpg'
        filenamewithpath=os.path.join(savepath, filename)
        # abandon the first one, which is filled with .seq header
        if count > 0:
            i=open(filenamewithpath,'wb+')
            i.write(splitstring)
            i.write(img)
            i.close()
        count += 1

if __name__=="__main__":
    rootdir = "D:\Data\feifei"
    # walk in the rootdir, take down the .seq filename and filepath
    for parent, dirnames, filenames in os.walk(rootdir):
        for filename in filenames:
            # check .seq file with suffix
            if fnmatch.fnmatch(filename,'*.seq'):
                # take down the filename with path of .seq file
                thefilename = os.path.join(parent, filename)
                # create the image folder by combining .seq file path with .seq filename
                thesavepath = parent+'\'+filename.split('.')[0]
                print "Filename=" + thefilename
                print "Savepath=" + thesavepath
                open_save(thefilename,thesavepath)

　　先贴出代码，最近做实验要用到加州理工的行人数据库，下载一看，是把图像按照二进制数据形式存储为.seq文件，没办法，找到一个哥们写的用python处理seq文件，将数据转换为.jpg图像。代码直接可用，只需要把文件搜索目录“rootdir”改为你自己文件的目录就OK了