feat(ocr): Add character blacklist and line-split options for better accuracy #1925
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…accuracy Add two new OCR options to improve subtitle recognition: 1. Character blacklist (enabled by default): - Blacklists characters |, \, `, _, ~ that are commonly misrecognized - Prevents "I" being recognized as "|" (pipe character) - Use --no-ocr-blacklist to disable if needed 2. Line-split mode (opt-in via --ocr-line-split): - Splits multi-line subtitle images into individual lines - Uses PSM 7 (single text line mode) for each line - Adds 10px padding around each line for better edge recognition - May improve accuracy for some VOBSUB subtitles Test results with VOBSUB sample: - Blacklist: Reduces pipe errors from 14 to 0 - Matches subtile-ocr's approach for preventing misrecognition 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Use tabs for continuation indentation in C code (clang-format) - Remove extra trailing spaces in Rust code (rustfmt) 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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CCExtractor CI platform finished running the test files on linux. Below is a summary of the test results, when compared to test for commit 730156f...:
Your PR breaks these cases:
It seems that not all tests were passed completely. This is an indication that the output of some files is not as expected (but might be according to you). Check the result page for more info. |
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CCExtractor CI platform finished running the test files on windows. Below is a summary of the test results, when compared to test for commit 730156f...:
Your PR breaks these cases:
It seems that not all tests were passed completely. This is an indication that the output of some files is not as expected (but might be according to you). Check the result page for more info. |
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Summary
I→|--ocr-line-splitmode for multi-line subtitle imagesNew Options
--no-ocr-blacklist|,\,`,_,~)--ocr-line-splitTest Results (VOBSUB MKV sample)
|errorsThe blacklist completely eliminates pipe character misrecognition, matching subtile-ocr's accuracy.
Test plan
--no-ocr-blacklistto verify it can be disabled--ocr-line-splitoption🤖 Generated with Claude Code