include/cvw/algorithms/normalize.hpp

Min-max normalization algorithm. More...

Namespaces

Name
cvw

Detailed Description

Min-max normalization algorithm.

Author: Charliechen114514

Version: 1.0.0

Since: 1.0.0

Date: 2026-05-15

Normalizes a grayscale image to a 32-bit float range.

Source code

#pragma once
#include "detail.hpp"
#include <opencv2/core.hpp>

namespace cvw {

[[nodiscard]] inline expected<Image<Float1>, AlgorithmError>
normalize(Image<Gray> img, float min_val = 0.0f, float max_val = 1.0f) {
    auto ec = detail::check_non_empty(img);
    if (!ec) {
        return unexpected(ec.error());
    }

    cv::Mat dst;
    cv::normalize(img.mat(), dst, min_val, max_val, cv::NORM_MINMAX, CV_32FC1);
    return Image<Float1>(std::move(dst));
}

} // namespace cvw

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Updated on 2026-05-17 at 13:22:38 +0000