Image denoising techniques ************************** .. highlight:: cpp dctDenoising ------------ .. ocv:function:: void dctDenoising(const Mat &src, Mat &dst, const float sigma) The function implements simple dct-based denoising, link: http://www.ipol.im/pub/art/2011/ys-dct/. :param src: source image :param dst: destination image :param sigma: expected noise standard deviation :param psize: size of block side where dct is computed .. seealso:: :ocv:func:`fastNlMeansDenoising`