Module preprocessing 

Image preprocessing utilities for OCR.

This module provides image preprocessing operations to improve OCR accuracy:

• Auto-resize large images
• Noise reduction
• Contrast enhancement
• Deskewing
• Border removal

Structs

ImagePreprocessor

Image preprocessor for OCR.

PreprocessConfig

Preprocessing configuration.

Constants

DEFAULT_MAX_DIMENSION

Maximum image dimension (width or height) for automatic resizing.

Functions

adaptive_threshold

Apply adaptive thresholding for binarization.

denoise_image

Apply noise reduction using median filter.

deskew_image

Detect and correct image skew (rotation).

enhance_contrast

Enhance image contrast using histogram equalization.

remove_borders

Remove borders from an image.

resize_if_needed

Resize image if it exceeds the maximum dimension.