Tesseract OCR 语言包支持通过环境变量设置 #7242

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Tesseract OCR 语言包支持通过环境变量设置#7242

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语言包不要安装太多，否则会导致 OCR 缓慢甚至超时返回空结果，并且占用过多的系统资源。

优先读取环境变量 SIYUAN_TESSERACT_LANGS，例如 SIYUAN_TESSERACT_LANGS=chi_sim+chi_sim_vert+eng+fra+osd，不存在环境变量的情况下自动过滤，只保留：eng、chi*、fra、spa、deu、rus、osd

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changed the title ~~[-]Tesseract 语言包过滤[/-]~~ Tesseract OCR 语言包过滤

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🎨 Tesseract OCR 语言包过滤 Fix #7242

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Dear D,

please consider the need of users to do OCR with languages outside the suggested list.
Maybe a configuration variable can be added instead, with these default values, but which can be modified if needed?

Thanks for your cosideration!

MemberAuthor

有道理，我想我们可以继续改进为通过环境变量进行扩展，优先读取环境变量中的配置，例如可以配置环境变量 SIYUAN_TESSERACT_LANGS=chi_sim+chi_sim_vert+eng+fra+osd 如果存在这样的环境变量就直接使用了。

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changed the title ~~[-]Tesseract OCR 语言包过滤[/-]~~ Tesseract OCR 语言包支持通过环境变量设置

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🎨 Tesseract OCR 语言包支持通过环境变量设置 Fix #7242

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windows上面没有完全识别tesseract安装的语言包 #14986

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2.7.3
Closed Feb 7, 2023, 100% complete

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