Module preprocess 

Image Preprocessing Utilities

Provides various image preprocessing functions required for OCR

Structs

NormalizeParams

Image normalization parameters

Functions

create_gray_image

Create grayscale image

crop_image

Crop image region

get_padded_size

Calculate size to pad to (multiple of 32)

preprocess_batch_for_rec

Batch preprocess recognition images

preprocess_for_det

Convert image to detection model input tensor

preprocess_for_rec

Convert image to recognition model input tensor

resize_to_height

Scale image to specified height (for recognition model)

resize_to_max_side

Scale image to specified maximum side length

rgb_to_image

Create image from RGB data

split_into_blocks

Split image into blocks (for high precision mode)

threshold_mask

Convert grayscale mask to binary mask

to_rgb

Convert image to RGB