Function gaussian

src/include/image_process_utils/imageproc.hpp:29–32

    }

    inline float gaussian(float x, float sigma) {
        if (sigma <= 0.0f) return 1.0f;
        return std::exp(-(x * x) / (2.0f * sigma * sigma));
    }

    // PyTorch-compatible area pixel compute scale
    inline float area_pixel_compute_scale(int input_size, int output_size, bool align_corners) {