仅在我的iOS应用程序中将tesseract字符限制为a-z和数字 [英] Limit tesseract character to a-z and number only in my iOS app

问题描述

我正在使用tesseract来识别我的iOS项目之一中的字符.现在正在读取所有字符，包括字母数字字符.但是我只想读取字符a-z和数字0-9.我遵循了> tesseract正在寻找的限制字符，但无法弄清楚我可以在我的iOS应用中实现此功能.

I am using tesseract for recognizing character in one of my iOS project. It is now reading all characters including alpha numeric character. But I want to read only character a-z and numbers 0-9. I followed Limit characters tesseract is looking for, but can't figure out how can I implement this in my iOS app.

任何人都可以建议我如何在我的iOS项目中实现这一目标.

Can anyone suggest me how can I implement this in my iOS project.

推荐答案

您可以在提取之前使用TessBaseAPI.SetVariable指定白名单(允许的字符)

You can specify the white list (allowed characters) using TessBaseAPI.SetVariable prior to extraction

 tesseract->SetVariable("tessedit_char_whitelist", "abcdefghijklmnopqrstuvwxyz012345789");

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