[IMPROVEMENT] Adding grayscale conversion for better OCR #759
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hrideshmg
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Mar 12, 2025
Updates the requirements on [markupsafe](https://github.com/pallets/markupsafe) to permit the latest version. - [Release notes](https://github.com/pallets/markupsafe/releases) - [Changelog](https://github.com/pallets/markupsafe/blob/main/CHANGES.rst) - [Commits](pallets/markupsafe@0.9...2.1.2) --- updated-dependencies: - dependency-name: markupsafe dependency-type: direct:production ... Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
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Please prefix your pull request with one of the following: [FEATURE] [FIX] [IMPROVEMENT].
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Sometimes when DVB subtitle bitmaps involved transparent backgrounds, Tesseract OCR would fail to accurately recognize the text, which led to nonsensical outputs. This can be fixed by first converting the Leptonica pix used by Tesseract to a grayscale which solves the problems caused by the transparent elements.
This is a well documented problem on the Tesseract repository.