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Posted to dev@tika.apache.org by "Peter Kronenberg (Jira)" <ji...@apache.org> on 2021/02/11 00:00:00 UTC
[jira] [Updated] (TIKA-3298) Add a "preloadLangs" parameter to
TesseractOCRParser
[ https://issues.apache.org/jira/browse/TIKA-3298?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Peter Kronenberg updated TIKA-3298:
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Attachment: image-2021-02-10-18-59-47-793.png
> Add a "preloadLangs" parameter to TesseractOCRParser
> ----------------------------------------------------
>
> Key: TIKA-3298
> URL: https://issues.apache.org/jira/browse/TIKA-3298
> Project: Tika
> Issue Type: Task
> Reporter: Tim Allison
> Priority: Minor
> Fix For: 2.0.0
>
> Attachments: image-2021-02-10-18-59-47-793.png
>
>
> [~peterkronenberg] on the user/dev lists and on TIKA-3297 and TIKA-3296 has observed that the tesseract error message for "lang data doesn't exist" is not extremely clear. We could add a "preloadLangs" option to TesseractOCRParser (default would be {{false}}). If set to true, the parser (upon initialization) if it finds tesseract, will call {{tesseract --list-langs}} and then store those langs. At parse time, if the langs set has anything in it, the TesseractOCRParser will check that set against the user-requested language and throw a clearer exception to the user that the language data doesn't exist for the requested language.
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