pub fn threshold_otsu(
input: &Tensor,
max_val: f32,
) -> Result<(f32, Tensor), ImgProcError>Expand description
Otsu’s automatic threshold. Input: [H, W] grayscale with values in [0, 255].
Otsu threshold for single-channel [H, W, 1] images.
Returns (threshold, thresholded_image).