Function adaptive_threshold 

pub fn adaptive_threshold(
    image: &GrayImage,
    window_size: u32,
) -> Result<GrayImage>

Apply adaptive thresholding using local window statistics

Uses a sliding window to calculate local mean and applies threshold relative to local statistics. Better for images with varying illumination.

Arguments

• image - Input grayscale image
• window_size - Size of local window (must be odd)

Returns

Binary image with adaptive thresholding applied

Example

use ruvector_scipix::preprocess::transforms::adaptive_threshold;
let binary = adaptive_threshold(&image, 15).unwrap();