using python to get more clear table picture in the pdf

""" Created on Wed May 6 17:40:01 2020

@author: yebarryallen 先要在cmd命令安装 如下 pip install pillow

""" #锐化 #用法教程：https://zhuanlan.zhihu.com/p/59656703 #https://www.cnblogs.com/Young-shi/p/11478732.html #https://pillow.readthedocs.io/en/stable/reference/ImageEnhance.html#PIL.ImageEnhance.PIL.ImageEnhance.Contrast ''' 发现先用smooth再用 contrast 效果不错 ''' from PIL import Image from PIL import ImageFilter im=Image.open('锐化2.png') bk=Image.open('timg.jpg') ''' im_1=im.convert('RGB').filter(ImageFilter.SMOOTH) im_2=im_1.convert('RGB').filter(ImageFilter.SMOOTH) im_3=im_2.convert('RGB').filter(ImageFilter.SMOOTH) im_4=im_3.convert('RGB').filter(ImageFilter.SHARPEN) ''' smooth=im.convert('RGB').filter(ImageFilter.SMOOTH) #sharpen=im.convert('RGB').filter(ImageFilter.SHARPEN) #smoothcover=im.convert('RGB').filter(ImageFilter.UnsharpMask(radius=2, percent=150, threshold=3))

from PIL import ImageEnhance im2=ImageEnhance.Contrast(smooth).enhance(3) ''' 这里为处理出来的表格打上背景 使得其更像自己画的一样 ''' im2.thumbnail((497,332),resample=Image.BICUBIC) #接下来可以进行背景图与高清图的融合 #网址https://blog.csdn.net/zhangziju/article/details/79123275 print(bk.mode,bk.size) print(im2.mode,im2.size) #调整背景图的大小 使用box box = (0,0,424,332) region = bk.crop(box) #最后一步 加上背景图 print(bk.mode,bk.size) print(im2.mode,im2.size) blend1=Image.blend(im2,region,0.2)