apply
fun applyPreprocessing(image: BufferedImage, useAdaptive: Boolean = false, logSignature: String = DEFAULT_LOG_SIGNATURE): ImagePreprocessor.PreprocessResult?
Core image preprocessing: grayscale conversion, binarization, and median denoising.
Return
The preprocessing result, or null if preprocessing fails.
Parameters
image
The source image.
use
When true, uses adaptive (local mean) thresholding instead of global Otsu. Adaptive thresholding handles uneven lighting and shadows better, making it suitable for difficult camera captures.
log
Signature prefix shown in logs to identify the caller context.