python把图片按两条中线裁剪成四张

朱雀 2022-02-01 03:27 400阅读 0赞

from PIL import Image
    import os
    import glob
    
    
    def crop(im, height, width):
        # im = Image.open(infile)
        imgwidth, imgheight = im.size
        for i in range(int(imgheight // height)):
            for j in range(int(imgwidth // width)):
                # print (i,j)
                box = (j * width, i * height, (j + 1) * width, (i + 1) * height)
                yield im.crop(box)
    
    
    if __name__ == '__main__':
        # change the path and the base name of the image files
        imgdir = 'B:\\path\\new\\ZYW_ADV_G'
        basename = '*.pgm'
        filelist = glob.glob(os.path.join(imgdir, basename))
        print(filelist)
        for infile in filelist:
            # infile='/Users/alex/Documents/PTV/test_splitter/cal/Camera 1-1-9.pgm'
    
            print(infile)
    
            name = infile.split('\\')[-1].split('.')[0]
            im = Image.open(infile)
            imgwidth, imgheight = im.size
            print('Image size is: %d x %d ' % (imgwidth, imgheight))
    
            height = imgheight // 2
            width = imgwidth // 2
            start_num = 0
            for k, piece in enumerate(crop(im, height, width), start_num):
                img = Image.new('L', (width, height), 255)
                # print img
                img.paste(piece)
                path = os.path.join(imgdir + '\\' + name+"_%d.pgm" % int(k + 1))
                img.save(path)

![原图][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3p6bGRt_size_16_color_FFFFFF_t_70]  
原图  
![在这里插入图片描述][2019051311150418.png]  
![在这里插入图片描述][20190513111519955.png]  
![在这里插入图片描述][20190513111539217.png]  
![在这里插入图片描述][20190513111554321.png]  
裁剪后结果  
[参考][Link 1]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3p6bGRt_size_16_color_FFFFFF_t_70]: /images/20220201/873424f45c024dd1a39dcb5a385a5bed.png
[2019051311150418.png]: /images/20220201/bc76b241bf39458b87c3ab27d5e797cd.png
[20190513111519955.png]: /images/20220201/55c84bb8758c4127b6cd406222330602.png
[20190513111539217.png]: /images/20220201/eecd9b634b6741d09f9168cde754c570.png
[20190513111554321.png]: /images/20220201/75f7377168b3473180fae6a7cc0ec7f4.png
[Link 1]: https://gist.github.com/alexlib/ef7df7bfdb3dba1698f4