图片分辨率修改

亦凉 2023-10-10 09:27 9阅读 0赞

日常经常有网站要求制定分辨率的图片上传，每次看到网上的教程都是借助ps, 美图秀秀折腾。感觉太折腾了。借助python写一份小的代码进行精度转换可以满足日常需求了。

from PIL import Image
    
    def change_resolution(picPath, reslution):
        img = Image.open(picPath)
        x, y = img.size
        print( x, y)
        changex = float(x) / reslution[0]
        changey = float(y) / reslution[1]
    
        # 判断分辨率是否满足
        if changex > 1 or changey > 1:
    
            change = changex if changex > changey else changey
            #print( change)
            #print( int(reslution[0] / change), int(reslution[1] / change))
            print('output reslution:')
            print( int(x / change), int(y / change))
            img.resize((int(x / change), int(y / change))).save('result.jpg')
    
    if __name__ == '__main__':
        change_resolution('20190123154207.jpg', (1136, 640))

以下分别是转换前后图片的对比。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl8zODEwMjkxMg_size_16_color_FFFFFF_t_70][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl8zODEwMjkxMg_size_16_color_FFFFFF_t_70 1][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl8zODEwMjkxMg_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20190924161121453.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl8zODEwMjkxMg==,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl8zODEwMjkxMg_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20190924161204825.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl8zODEwMjkxMg==,size_16,color_FFFFFF,t_70