[英]How to whitelist characters in tess4j version 4.1.*
The objective is to read number specific data (1,2,...,9,0) from an image. 目的是从图像中读取数字特定的数据(1,2,...,9,0)。 For this, I'm using Tess4j version 4.1.1. 为此,我使用的是Tess4j 4.1.1版。
<!-- https://mvnrepository.com/artifact/net.sourceforge.tess4j/tess4j -->
<dependency>
<groupId>net.sourceforge.tess4j</groupId>
<artifactId>tess4j</artifactId>
<version>4.1.1</version>
</dependency>
My sample code looks like : 我的示例代码如下:
ImageIO.read(new File("c:\\temp\\number1.jpg"));
ITesseract instance = new Tesseract();
instance.doOCR(img);
But for some reason, it is misrecognizing some numbers as alphabetic letters. 但是由于某种原因,它把一些数字误认为是字母。 So to minimize the error I need to whitelist only numbers. 因此,为了最大程度地减少错误,我只需要将数字列入白名单。
As this was possible in earlier Tess4j releases(3.0.**) with TessBaseAPI , but in current 4.1.* version it's not available. 由于这在早期版本Tess4j(3.0。**)用有可能TessBaseAPI ,但在目前的4.1。*版本是不可用的。 Can someone help me out here, how to set whitelist characters in TessAPI 4.1.* and later? 有人可以在这里帮助我,如何在TessAPI 4.1。*及更高版本中设置白名单字符?
The feature is broken since Tesseract 4.00-alpha. 自Tesseract 4.00-alpha起,该功能已损坏。 It has not been fixed yet. 尚未修复。
https://github.com/tesseract-ocr/tesseract/issues/751 https://github.com/tesseract-ocr/tesseract/issues/751
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