ff82fdce90
- Add median_denoise() function using imageproc::filter::median_filter - 3x3 kernel (radius 1,1) removes salt-and-pepper noise while preserving edges - Comprehensive tests: noise removal, edge preservation, binary output - Export median_denoise from ocr::preprocessing module Closes: pdftract-5xyjv
11 lines
379 B
Rust
11 lines
379 B
Rust
//! OCR preprocessing operations (Phase 5.3).
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//!
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//! This module provides image preprocessing functions that prepare scanned
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//! pages for OCR. Operations include contrast normalization, binarization,
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//! and noise reduction.
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pub mod contrast;
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pub mod denoise;
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pub use contrast::{histogram_stretch, histogram_stretch_if_needed, PreprocError};
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pub use denoise::median_denoise;
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