tesseract

Tess4j - Pdf to Tiff to tesseract - “Warning: Invalid resolution 0 dpi. Using 70 instead.”

由 别等时光非礼了梦想. 提交于 2020-02-06 07:24:07
问题 I am usig tess4j (net.sourceforge.tess4j:tess4j:4.4.0) and try OCR on pdf files. So as I understood I have to transform the pdf first to tiff or png (any of those suggested?) what I did like this: tesseract.doOCR(PdfUtilities.convertPdf2Tiff(inputPdfFile)); and get following warning: Warning: Invalid resolution 0 dpi. Using 70 instead. Question Does it has any influence on my scan results? (if not, ok - I can switch off the warning) Is there a way to set the DPI by hand or should convertPdf

centos7 yum安装 tesseract4.1

由 折月煮酒 提交于 2020-02-05 02:17:21
官网大法好，其他方法需要装好多依赖，还没安装成功。。。 yum-config-manager --add-repo https://download.opensuse.org/repositories/home:/Alexander_Pozdnyakov/CentOS_7/ sudo rpm --import https://build.opensuse.org/projects/home:Alexander_Pozdnyakov/public_key yum update tesseract yum list tessact # 这时就是4.1版本的了 yum install tesseract [yum install tesseract-langpack-deu] 来源： CSDN 作者： 酷沃 链接： https://blog.csdn.net/u010155229/article/details/104172853

How to generate a tiff/box file from an image to train Tesseract in Windows

由 可紊 提交于 2020-02-01 19:57:27
问题 I'm trying to train Tesseract in Windows and for that I need a pair tiff/box file and I'm trying to create it using jTessBoxEditor but it doesn't accept images as input. I've also tried boxFactory but it doesn't run properly. Does anyone know what is the best tool to create the pair from images? Thanks 回答1: If you have jTessBoxEditor, then you have Tesseract bin files. Go to the tesseract-ocr subfolder of jTessBoxEditor and run the following command : tesseract.exe D:\testocr\TestImage.tif D:

Perl Image::OCR::Tesseract module on Windows

由 前提是你 提交于 2020-02-01 05:48:12
问题 Anyone out there know of a graceful way to install the "Image::OCR::Tesseract" module on Windows? The module fails to install on Windows via CPAN due to a *NIX only module dependency called "LEOCHARRE::CLI". This module does not seem to be required to run "Image::OCR::Tesseract" itself. I've managed to get the module working by first manually installing the dependency modules listed in the makefile.pl (except for "LEOCHARRE::CLI") and then by moving the module file to the correct directory

Python2.7利用Tesseract进行中英文图像识别

由 人盡茶涼 提交于 2020-01-28 03:56:21
背景环境: win8.1 64位 python2.7.13 本以为会很简单，结果在配置环境这块上花了很多时间，踩了几个坑，最后自己看英文文档和log才解决问题。 打开网站 https://pypi.python.org/pypi/pytesseract https://github.com/tesseract-ocr/tesseract/wiki https://github.com/tesseract-ocr/tesseract/wiki/Downloads http://www.pythonware.com/products/pil/ 找到并下载安装tesseract-ocr-setup-4.00.00dev.exe文件 下载中文训练库chi_sim.traineddata 将安装文件路径 添加到环境变量中的PATH 和 Path中去 ，在系统变量中添加一个TESSDATA_PREFIX，变量值还是文件路径 我的是D:\programfiles\tesseract\Tesseract-OCR 打开cmd安装 pip install pytesseract 去C:\Python27\Lib\site-packages 下找到PIL卸载 然后 去下载 PIL-1.1.7.win32-py2.7.exe 并安装 # -*- coding: utf-8 -*- try: import

基于Tesseract—OCR技术的文字识别优化

由 假如想象 提交于 2020-01-26 23:48:05
一、需求分析 对天猫平台的企业信息采集下来进行结构化处理，提取出文字信息后汇总进Excel作为交付文件。 主要的功能设计如下： 1、程序能够自动读取企业工商信息图片所在的文件夹路径，并从文件夹路径中顺序取出图片进行识别，最终的识别结果以一份汇总的Excel交付。 2、因为天猫平台公示的图片内容没有固定格式，所以需要程序能匹配不同格式的图片内容提取信息。 3、能够提取出图片中的企业注册号、企业名称数据项，企业注册号、企业名称数据项要进行分析处理。 4、识别准确率需要保证在95%以上。 5、识别速度保持在60秒识别50张图片。 二、本程序处理图片方面的关键模块 1、对图片进行切割： 要求识别的文字信息“企业名称”“企业注册号”位于整个图片的其中一部分，把剩余部分切除，只留下关键信息部分，不但可以提高识别速度，还可提升识别率。 2、在进行图片的二值化时，有两种方式： （1）图片为彩色时，宜找到每个像素点合适的灰色度，因为每个像素点的灰色度不同程度上受到周边像素加权影响，从而影响整个图片的识别率。比如本像素点加上周围8个灰度值再除以9，算出其相对灰度值。 （2）图片为黑白色时，宜采用max-min方法对图片进行二值化。 针对本程序识别的图片的黑白色对比明显，故采用max-min方法进行二值化。 private static File binaryImage（File orcFile）

java.lang.IllegalAccessError: tried to access method net.sourceforge.tess4j.Tesseract.<init>()V from class Tess4jTest.TestTess

由 岁酱吖の 提交于 2020-01-25 09:13:05
问题 I did a Java OCR project with Tesseract in the Mirth .When I run the jar file from the Mirth,I get this error.When I search it,I found that there is a init() method and also it is a protected void in Tesseract.java.I think that maybe it is the reason for that error. What should I do?Thank you so much for your helps. package Tess4jTest; import java.io.File; import java.io.IOException; import net.sourceforge.tess4j.*; public class TestTess { public static String Tc; public static String phone;

Can't install Tesseract-OCR on Mac

由 人盡茶涼 提交于 2020-01-24 21:53:14
问题 I'm trying to make an OCR program in python 2.7.14 with pytesseract. When I ran my code: from PIL import Image import pytesseract print(pytesseract.image_to_string(Image.open('test.png'))) I got the error: IOError: [Errno 2] No such file or directory: 'test.png' I searched in many places, and it seems that I need to install tesseract-ocr. I ran: pip install tesseract-ocr But I got the error: Collecting tesseract-ocr Using cached tesseract-ocr-0.0.1.tar.gz Requirement already satisfied: cython

Tesseract参数详解

由 蓝咒 提交于 2020-01-24 20:44:35
C:\Users\jack>tesseract --help-extra Usage : tesseract -- help | -- help - extra | -- help - psm | -- help - oem | -- version tesseract -- list - langs [ -- tessdata - dir PATH ] tesseract -- print - parameters [ options . . . ] [ configfile . . . ] tesseract imagename | imagelist | stdin outputbase | stdout [ options . . . ] [ configfile . . . ] OCR options : -- tessdata - dir PATH Specify the location of tessdata path . -- user - words PATH Specify the location of user words file . -- user - patterns PATH Specify the location of user patterns file . -- dpi VALUE Specify DPI for input image .

OCR : Not getting desired result

由 雨燕双飞 提交于 2020-01-24 01:19:29
问题 I have this image . I am trying to OCR the letters in this image. I am not getting desired result for letters '9' and 'R'. First I cropped these letters, & and executing following command. tesseract 9.png stdout -psm 8 . It is just returning "." OCR for all other letters are working fine but not for these two letters(though, I think their image quality is not that bad). Any suggestion/help is appreciated. 回答1: I've no experience with tesseract myself, but replicating the character and adding
订阅 tesseract