Function normalize

src-core/common/image/processing.cpp:216–241

    }

    void normalize(Image &img)
    {
        int max = 0;
        int min = img.maxval();

        // Get min and max
        for (size_t i = 0; i < img.size(); i++)
        {
            int val = img.get(i);

            if (val > max)
                max = val;
            if (val < min)
                min = val;
        }

        if (abs(max - min) == 0) // Avoid division by 0
            return;

        // Compute scaling factor
        float factor = img.maxval() / float(max - min);

        // Scale entire image
        for (size_t i = 0; i < img.size(); i++)
            img.set(i, img.clamp((img.get(i) - min) * factor));
    }

    void linear_invert(Image &img)
    {