OCRmyPDF 安装详解
高勇
概述
支持的操作系统：
windows 10 下安装部署：
windows下需要安装vc++ 2014版本.
C:\Windows\System32>ver
Microsoft Windows [版本 10.0.14393]
windows下需要安装tesseract版本的软件：
https://github.com/UB-Mannheim/tesseract/wiki
tesseract-ocr：
C:\Windows\System32>pip install ocrmypdf
C:\Windows\System32>pip list | findstr "img2pdf lxml ocrmypdf pdfminer pikepdf pycryptodome reportlab ruffus sortedcontainers chardet pycparser six olefile pillow"
cchardet 2.1.4
chardet 3.0.4
img2pdf 0.3.3
lxml 4.3.3
ocrmypdf 8.2.4
olefile 0.44
pdfminer.six 20181108
pikepdf 1.3.0
pycparser 2.19
pycryptodome 3.8.1
reportlab 3.5.21
ruffus 2.8.1
six 1.11.0
sortedcontainers 2.1.0
CentOS 7版本：
使用EPEL repo：
# cat /etc/centos-release
CentOS Linux release 7.6.1810 (Core)
# yum -y install python36 python36-pip python36-devel
# python3 -V
Python 3.6.6
# pip3 -V
pip 8.1.2 from /usr/lib/python3.6/site-packages (python 3.6)
# pip3 install --upgrade pip
# pip -V
pip 19.1 from /usr/local/lib/python3.6/site-packages/pip (python 3.6)
需求：
Python 3.6 or newer
Ghostscript 9.15 or newer
qpdf 8.1.0 or newer
Tesseract 4.0.0-alpha or newer
安装需要依赖的软件包：
# yum -y install gcc gcc-c++ cpp libgcc libgomp libstdc++ libstdc++-devel
# yum -y install ghostscript ghostscript-chinese ghostscript-devel ghostscript-chinese-zh_CN
# yum -y install qpdf qpdf-devel qpdf-libs qpdfview
# yum -y install tesseract tesseract-osd tesseract-devel tesseract-langpack-chi_sim
# pip search ocrmypdf
ocrmypdf (8.2.4) - OCRmyPDF adds an OCR text layer to scanned PDF files, allowing them to be searched
# pip install ocrmypdf
Collecting ocrmypdf
Downloading https://files.pythonhosted.org/packages/4f/84/2e2de3a185c5f8979d88f8c41925005ca7fef7619f812f0cbafb205c2d79/ocrmypdf-8.2.4-py35-none-any.whl (113kB)
|████████████████████████████████| 122kB 124kB/s
Collecting chardet<4,>=3.0.4 (from ocrmypdf)
Downloading https://files.pythonhosted.org/packages/bc/a9/01ffebfb562e4274b6487b4bb1ddec7ca55ec7510b22e4c51f14098443b8/chardet-3.0.4-py2.py3-none-any.whl (133kB)
|████████████████████████████████| 143kB 18kB/s
Collecting img2pdf<0.4,>=0.3.0 (from ocrmypdf)
Downloading https://files.pythonhosted.org/packages/e0/c6/7cd14232a1b10bf884c12daf3626afb76c4f60b52ae0eb23ce1519542ae4/img2pdf-0.3.3.tar.gz (80kB)
|████████████████████████████████| 81kB 30kB/s
Collecting pdfminer.six==20181108; sys_platform != "darwin" (from ocrmypdf)
Downloading https://files.pythonhosted.org/packages/8a/fd/6e8746e6965d1a7ea8e97253e3d79e625da5547e8f376f88de5d024bacb9/pdfminer.six-20181108-py2.py3-none-any.whl (5.6MB)
|████████████████████████████████| 5.6MB 702kB/s
Collecting ruffus>=2.7.0 (from ocrmypdf)
Downloading https://files.pythonhosted.org/packages/18/24/05e8fe590d08bd9e6122c6a87425ff741c79edf01d2873f92028e860e547/ruffus-2.8.1.tar.gz (12.2MB)
|████████████████████████████████| 12.2MB 224kB/s
Collecting reportlab>=3.3.0 (from ocrmypdf)
Downloading https://files.pythonhosted.org/packages/a5/d0/e3395ce0fab33245a6597a5db58e99b78e512ae9ae904aa2e7811e332f97/reportlab-3.5.21-cp36-cp36m-manylinux1_x86_64.whl (2.6MB)
|████████████████████████████████| 2.6MB 704kB/s
Collecting pikepdf<2,>=1.2.0 (from ocrmypdf)
Downloading https://files.pythonhosted.org/packages/81/62/f8c14b826cb089b07f7291ae796b24554a9c863a7d79979422c81c2fc854/pikepdf-1.3.0-cp36-cp36m-manylinux1_x86_64.whl (9.6MB)
|████████████████████████████████| 9.6MB 558kB/s
Collecting cffi>=1.9.1 (from ocrmypdf)
Downloading https://files.pythonhosted.org/packages/5f/bf/6aa1925384c23ffeb579e97a5569eb9abce41b6310b329352b8252cee1c3/cffi-1.12.3-cp36-cp36m-manylinux1_x86_64.whl (430kB)
|████████████████████████████████| 440kB 23.9MB/s
Collecting Pillow (from img2pdf<0.4,>=0.3.0->ocrmypdf)
Downloading https://files.pythonhosted.org/packages/d2/c2/f84b1e57416755e967236468dcfb0fad7fd911f707185efc4ba8834a1a94/Pillow-6.0.0-cp36-cp36m-manylinux1_x86_64.whl (2.0MB)
|████████████████████████████████| 2.0MB 1.5MB/s
Collecting six (from pdfminer.six==20181108; sys_platform != "darwin"->ocrmypdf)
Downloading https://files.pythonhosted.org/packages/73/fb/00a976f728d0d1fecfe898238ce23f502a721c0ac0ecfedb80e0d88c64e9/six-1.12.0-py2.py3-none-any.whl
Collecting sortedcontainers (from pdfminer.six==20181108; sys_platform != "darwin"->ocrmypdf)
Downloading https://files.pythonhosted.org/packages/13/f3/cf85f7c3a2dbd1a515d51e1f1676d971abe41bba6f4ab5443240d9a78e5b/sortedcontainers-2.1.0-py2.py3-none-any.whl
Collecting pycryptodome (from pdfminer.six==20181108; sys_platform != "darwin"->ocrmypdf)
Downloading https://files.pythonhosted.org/packages/06/fc/b09816d7b2d79d6454f75b40def94a89ed785d8d8d07840563f1084c6ecd/pycryptodome-3.8.1-cp36-cp36m-manylinux1_x86_64.whl (9.7MB)
|████████████████████████████████| 9.7MB 99kB/s
Collecting lxml>=4.0 (from pikepdf<2,>=1.2.0->ocrmypdf)
Downloading https://files.pythonhosted.org/packages/35/8a/5e066949f2b40caac32c7b2a77da63ad304b5fbe869036cc3fe4a198f724/lxml-4.3.3-cp36-cp36m-manylinux1_x86_64.whl (5.7MB)
|████████████████████████████████| 5.7MB 624kB/s
Collecting pycparser (from cffi>=1.9.1->ocrmypdf)
Downloading https://files.pythonhosted.org/packages/68/9e/49196946aee219aead1290e00d1e7fdeab8567783e83e1b9ab5585e6206a/pycparser-2.19.tar.gz (158kB)
|████████████████████████████████| 163kB 21.2MB/s
Installing collected packages: chardet, Pillow, img2pdf, six, sortedcontainers, pycryptodome, pdfminer.six, ruffus, reportlab, lxml, pikepdf, pycparser, cffi, ocrmypdf
Running setup.py install for img2pdf ... done
Running setup.py install for ruffus ... done
Running setup.py install for pycparser ... done
Successfully installed Pillow-6.0.0 cffi-1.12.3 chardet-3.0.4 img2pdf-0.3.3 lxml-4.3.3 ocrmypdf-8.2.4 pdfminer.six-20181108 pikepdf-1.3.0 pycparser-2.19 pycryptodome-3.8.1 reportlab-3.5.21 ruffus-2.8.1 six-1.12.0 sortedcontainers-2.1.0
--版本查询：
# ocrmypdf --version
8.2.4
windows下好用的OCR软件：
ABBYY FineReader
http://www.abbyychina.com/
参考：
https://github.com/jbarlow83/OCRmyPDF
https://ocrmypdf.readthedocs.io/en/latest/installation.html
https://github.com/tesseract-ocr/tesseract
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