python代码图片_python在哪里打开

分类

图片处理-PIL-python给图片打马赛克

开始

依赖

Pillow 5.2.0 python 3.7.7 

献上代码

# magic remark # -*- encoding:utf-8 -*- from PIL import Image def _mosaic(img): s = img.size img = img.resize((10,10)) img = img.resize(s) return img def mosaic(img,fx,fy,tx,ty): c = img.crop((fx,fy,tx,ty)) c = _mosaic(c) img.paste(c,(fx,fy,tx,ty)) return img if(__name__ == '__main__'): while(1): flag = False name = input('请输入文件名:') try: img = Image.open(name) flag = True except: print('无法读取文件') if(flag): break fx,fy,tx,ty = None,None,None,None while(1): flag = False name = input('请输入需要打马赛克的区域(x1,y1,x2,y2):') try: name = [int(i) for i in name.split(',')] if(len(name) != 4): raise ValueError fx,fy,tx,ty = name flag = True except: print('错误的格式') if(flag): break img = mosaic(img,fx,fy,tx,ty) while(1): cmd = input('处理完成,按1存储文件,按2显示文件,按3退出:') if(cmd == '1'): path = input('请输入存储路径:') try: img.save(path) exit() except: print('无法存储文件') elif(cmd == '2'): img.show() elif(cmd == '3'): exit() else: print('未知的命令:%s'%cmd) 

效果

代码剖析

导入库

# magic remark # -*- encoding:utf-8 -*- from PIL import Image 

整体打马代码和思路

思路:

主要精华在这几句代码上:

img = img.resize((10,10)) img = img.resize(s) 

图片在缩小时，会将像素合并
图片在放大时，会将像素复制
所以将图片缩小再放大，就会将合并后的像素复制好几分，就起到了马赛克的效果

代码:

def _mosaic(img): s = img.size img = img.resize((10,10)) img = img.resize(s) return img 

局部马赛克代码和思路

思路:

将局部裁切出来，将裁切出的图片整体打马，在粘回去

代码:

def mosaic(img,fx,fy,tx,ty): c = img.crop((fx,fy,tx,ty)) c = _mosaic(c) img.paste(c,(fx,fy,tx,ty)) return img 

输入文件名

if(__name__ == '__main__'): while(1): flag = False name = input('请输入文件名:') try: img = Image.open(name) flag = True except: print('无法读取文件') if(flag): break 

输入裁切位置

 fx,fy,tx,ty = None,None,None,None while(1): flag = False name = input('请输入需要打马赛克的区域(x1,y1,x2,y2):') try: name = [int(i) for i in name.split(',')] if(len(name) != 4): raise ValueError fx,fy,tx,ty = name flag = True except: print('错误的格式') if(flag): break 

局部打马

 img = mosaic(img,fx,fy,tx,ty) 

输出部分

 while(1): cmd = input('处理完成,按1存储文件,按2显示文件,按3退出:') if(cmd == '1'): path = input('请输入存储路径:') try: img.save(path) exit() except: print('无法存储文件') elif(cmd == '2'): img.show() elif(cmd == '3'): exit() else: print('未知的命令:%s'%cmd) 

代码github

程序github

作者

hit-road

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