图片版pdf无法复制,转化成文字版的pdf后使用更方便.
我们需要用到python3.6,pypdf2,ghostscript,pythonmagick,百度文字识别服务和pdfkit.
安装
安装python3.6 略
安装ghostscript
https://ghostscript.com/download/gsdnld.html
安装wkhtmltopdf
https://wkhtmltopdf.org/downloads.html
pip安装pypdf2,ghostscript,baidu-aip,pdfkit
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pip install pypdf2pip install ghostscriptpip install baidu-aippip install pdfkit |
pip安装pythonmagick
https://www.lfd.uci.edu/~gohlke/pythonlibs/
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cd 下载目录pip install pythonmagick‑0.9.13‑cp36‑cp36m‑win_amd64.whl |
pypdf2用于拆分和合并pdf
示例代码如下:
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#导入pdffilereader和pdffilewriterfrom pypdf2 import pdffilereader, pdffilewriter#获取一个pdf对象pdf_input = pdffilereader(open(r'pdf路径', 'rb'))#获取pdf页数page_count = pdf_input.getnumpages()#获取pdf第四页的内容page = pdf_input.getpage(3)page['/contents']#获取一个pdfwriter对象pdf_output = pdffilewriter()# 将一个 pageobject 加入到 pdffilewriter 中pdf_output.addpage(page)#把新pdf保存pdf_output.write(open(r'新pdf路径','wb')) |
pythonmagick用于将单页pdf转化为jpg
百度云-文字识别-python sdk
每天有500次免费的识别
示例代码如下:
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#导入baidu-aipfrom aip import aipocr#https://console.bce.baidu.com/#/index/overview#产品服务->人工智能->文字识别->创建应用#获取以下三个值app_id = '??'api_key = '??'secret_key = '?? '#新建一个aipocrclient = aipocr(app_id, api_key, secret_key)#读取本地图片的函数def get_file_content(filepath): with open(filepath, 'rb') as fp: return fp.read()#读取本地图片image = get_file_content('p1.jpg')#可选参数options = {}options["language_type"] = "chn_eng"options["detect_direction"] = "true"options["detect_language"] = "true"options["probability"] = "true"#通用文字识别client.basicgeneral(image, options)#读取网络图片url = "https://note.youdao.com/yws/public/resource/1577071c1ffa2b6bf4e238ef6dbcfbf5/xmlnote/e5a19bedfeba4879b217c5bbf53b0245/22138"#可选参数options = {}options["language_type"] = "chn_eng"options["detect_direction"] = "true"options["detect_language"] = "true"options["probability"] = "true"#通用文字识别client.basicgeneralurl(url, options)#读取本地表格图片的函数def get_file_content(filepath): with open(filepath, 'rb') as fp: return fp.read()#读取本地表格图片image = get_file_content('p2.jpg')#可选参数options = {}options["language_type"] = "chn_eng"options["detect_direction"] = "true"options["detect_language"] = "true"options["probability"] = "true"#通用文字识别client.basicgeneral(image, options)#读取表格分割效果较差! |
pdfkit用于利用字符串生成pdf
示例代码如下:
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#pdfkit安装位置设置path_wk = r'pdfkit安装位置设置'pdfkit_config = pdfkit.configuration(wkhtmltopdf = path_wk)#pdfkit参数pdfkit_options = {'encoding': 'utf-8',}#制作pdfpdfkit.from_string(('string'),'d:\test.pdf',configuration=pdfkit_config,options=pdfkit_options) |
完整代码如下
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#导入所需包#os,操作文件和路径import os#ghostscript,代码简化import ghostscript#pypdf2,拆分pdffrom pypdf2 import pdffilereader, pdffilewriter#pythonmagick,单页pdf转图片from pythonmagick import image#baidu-aip,百度文字识别from aip import aipocr#pdfkit,字符串制作pdfimport pdfkit#参数path='??'pdfname='??'dpi='85'#https://console.bce.baidu.com/#/index/overview#产品服务->人工智能->文字识别->创建应用#获取以下三个值app_id = '??'api_key = '??'secret_key = '?? '#pdfkit安装位置设置path_wk = r'pdfkit安装位置设置'pdfkit_config = pdfkit.configuration(wkhtmltopdf = path_wk)#pdfkit参数pdfkit_options = {'encoding': 'utf-8',}#pdf转化为图片os.chdir(path)pdf_input = pdffilereader(open(pdfname, 'rb'))#自动获取pdf页数page_count = pdf_input.getnumpages()page_range=range(page_count)#也可以手工指定pdf需要转换的页数#page_range=range(0,100)#使用pypdf和ghostscript#==超级好用,超级直观,超级短==for page_num in page_range: im = image() im.density(dpi) im.read(pdfname + '[' + str(page_num) +']') im.write(str(page_num)+ '.jpg')#图片转化为字符串#新建一个aipocrclient = aipocr(app_id, api_key, secret_key)#读取本地图片的函数def get_file_content(filepath): with open(filepath, 'rb') as fp: return fp.read()#可选参数options = {}options["language_type"] = "chn_eng"options["detect_direction"] = "false"options["detect_language"] = "false"options["probability"] = "false"allteststr=[]for page_num in page_range: #读取本地图片 image = get_file_content(r'%s\%s.jpg' % (path,page_num)) #通用文字识别,得到的是一个dict testjson=client.basicgeneral(image, options) teststr='' for x in testjson['words_result']: teststr=teststr+x['words']+'</br>' allteststr.append(teststr)#字符串写入pdffor page_num in page_range: pdfkit.from_string((allteststr[page_num]),'%s.pdf' % (str(page_num)),configuration=pdfkit_config,options=pdfkit_options)#合并单页pdfpdf_output = pdffilewriter()for page_num in page_range: os.chdir(path) pdf_input = pdffilereader(open('%s.pdf' % (str(page_num)), 'rb')) page = pdf_input.getpage(0) pdf_output.addpage(page)pdf_output.write(open('newpdf.pdf','wb')) |
以上就是为大家介绍的如何使用python3.6,pypdf2,ghostscript,pythonmagick,百度文字识别服务和pdfkit
原文链接：https://blog.csdn.net/sqq513/article/details/79368243
