tess4j

Intercepting console output which originated from Tess4J

由 生来就可爱ヽ(ⅴ＜●) 提交于 2019-12-11 23:44:31
问题 I am trying to intercept the red Empty page!! message that gets printed to my screen when using Tess4J . I wrote a short interceptor class that overrides print and println and replaced stdout and stderr to check for this string: private static class Interceptor extends PrintStream { public Interceptor(OutputStream out) { super(out, true); } @Override public void print(String s) { if ( !s.contains("Empty page!!") ) super.print(s); } @Override public void println(String s) { if ( !s.contains(

Tesseract not using path variable

由 流过昼夜 提交于 2019-12-11 16:06:29
问题 Why does my Tesseract instance require me to explicitly set my datapath, but doesn't want to read the environment variable? Let me clarify: running the code ITesseract tesseract = new Tesseract(); String result = tesseract.doOCR(myImage); Throws an error: Error opening data file ./tessdata/eng.traineddata Please make sure the TESSDATA_PREFIX environment variable is set to the parent directory of your "tessdata" directory. I already have set my environment variable, ie doing echo $TESSDATA

Tess4j: Memory access error in tess4j java

由 眉间皱痕 提交于 2019-12-11 13:27:17
问题 I am writing a program using tess4j.jar. The program is extracting text and its location from within an image. I get this error: Exception in thread "main" java.lang.Error: Invalid memory access at net.sourceforge.tess4j.TessAPI1.TessBaseAPIRecognize(Native Method) at TesseractUtility.TessBoxForLogo.run(TessBoxForLogo.java:50) The funny thing is that it does not appear for every image. Does anybody know where I have an error? Here my code: public static ArrayList<Info> run(String imageName,

Suppress Warning on Console when using Tess4j for OCRing

由 不打扰是莪最后的温柔 提交于 2019-12-11 07:25:57
问题 Help in Suppress Warning- " Warning. Invalid resolution 1 dpi. Using 70 instead. " when using Tess4j for OCRing Hi All, I would like to suppress the warning thrown out in Console when using Tess4j for OCRing. Please help. Tesseract uses Leptonica for some image processing internally and Leptonica thows this on console. TIA 回答1: A Workaround: Not from Leptonica(lept4j) but from Tesseract(tess4j) way. Setting the Resolution if the resolution of the image if it is less than 70. TessAPI1

RuntimeException when trying to use Tess4J in Java EE

由 ≡放荡痞女 提交于 2019-12-10 22:36:17
问题 Im trying to use Tess4J in Java EE (Payara server), is this possible and if so how? Exact Exception I'm getting: e = (net.sourceforge.tess4j.TesseractException) net.sourceforge.tess4j.TesseractException: java.lang.RuntimeException: Need to install JAI Image I/O package. https://java.net/projects/jai-imageio/ I have added the jai-imageio to my pom.xml , as well as added it to the modules of Payara. File pom.xml <!-- https://mvnrepository.com/artifact/net.sourceforge.tess4j/tess4j -->

JAVA Tess4j doOCR() not working, Exception “Invalid memory access”

由 可紊 提交于 2019-12-07 09:30:00
问题 I'm working in dynamic web project in eclipse, I made a TesseractOCR class that contain: public class TesseractOCR { public TesseractOCR() { } public String doOCR(String file) { System.setProperty("jna.library.path", "32".equals(System.getProperty("sun.arch.data.model")) ? "lib/win32-x86" : "lib/win32-x86-64"); File imageFile = new File("C:\\Users\\Sherein Dabbah\\Downloads\\ca096-d7a6d799d7a1d798d799d7a72.jpg"); Tesseract instance = Tesseract.getInstance(); // JNA Interface Mapping

Forcing Tesseract to match pattern (four digits in a row)

由 ≡放荡痞女 提交于 2019-12-06 04:38:37
I'm trying to get Tesseract (using the Tess4J wrapper) to match only a specific pattern. The pattern is four digits in a row, which I think would be \d\d\d\d. Here is a VERY small subset of the image I'm feeding tesseract (the floorplans are restricted, so I'm cautious to post much more of it): http://mike724.com/view/a06771 I'm using the following java code: File imageFile = new File("/<redacted>/file.pdf"); Tesseract instance = Tesseract.getInstance(); instance.setTessVariable("load_system_dawg", "F"); instance.setTessVariable("load_freq_dawg", "F"); instance.setTessVariable("user_words

JAVA Tess4j doOCR() not working, Exception “Invalid memory access”

由 拟墨画扇 提交于 2019-12-05 16:03:53
I'm working in dynamic web project in eclipse, I made a TesseractOCR class that contain: public class TesseractOCR { public TesseractOCR() { } public String doOCR(String file) { System.setProperty("jna.library.path", "32".equals(System.getProperty("sun.arch.data.model")) ? "lib/win32-x86" : "lib/win32-x86-64"); File imageFile = new File("C:\\Users\\Sherein Dabbah\\Downloads\\ca096-d7a6d799d7a1d798d799d7a72.jpg"); Tesseract instance = Tesseract.getInstance(); // JNA Interface Mapping Tesseract1 instance1 = new Tesseract1(); instance.setLanguage("heb+eng"); // Tesseract1 instance = new

Java 使用 Tess4J 进行 图片文字识别 笔记

由 拟墨画扇 提交于 2019-12-05 13:24:40
最近的工作中需要使用到从图片中识别文字的操作,就在网上找到到Tess4j.那么,现在来总结一下使用中遇到的问题. 关于Tess4J简价: http://tess4j.sourceforge.net/ (需要翻墙) 很简洁的项目主页.一个从Java角度使用JNA封闭的针对 Tesseract ORC 的开源项目,使用 Apache License, v2.0 协议.支持TIFF, JPEG, GIF, PNG, and BMP image formats,Multi-page TIFF images,PDF document format.(支持Tiff是一个很大的亮点) 那就再了解一下 Tesseract ORC. https://code.google.com/p/tesseract-ocr/ 是一个Google支持的开源的OCR图文识别开源项目.去持多语言(当前3.02 版本支持包括英文,简体中文,繁体中文),支持Windows,Linux,Mac OSX 多平台.使用中Tesseract 的识别率非常高. ( 自己仅对数字,使用中图片清析的情况下没发生错误 ) 网上传的代码示例大多是在Windows下安装Tesseract ORC后通过CMD命令操作进行图识别操作.而 Tess4j 针对Tesseract 提供了JNI支持,同时还提供了一些图片操作的工具类,提供比如图片放大

Tesseract user-pattern is not applied

由 独自空忆成欢 提交于 2019-12-04 22:24:45
问题 I want to do OCR on this image. This is pre-define format. ie first five will characters, then next four will be digits and last will be character. When I execute following command $ tesseract in.png stdout I get output as BDVPD474SQ So, I went for user-pattern. I created a file(in directory /usr/share/tesseract-ocr/tessdata/configs ) named as bazaar (its content is as follow) load_system_dawg F load_freq_dawg F user_patterns_suffix user-patterns I also created a file, named as eng.user
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