// This file is part of OpenCV project.
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// It is subject to the license terms in the LICENSE file found in the top-level directory
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// of this distribution and at http://opencv.org/license.html.
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#ifndef OPENCV_MARR_HILDRETH_HASH_HPP
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#define OPENCV_MARR_HILDRETH_HASH_HPP
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#include "img_hash_base.hpp"
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namespace cv {
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namespace img_hash {
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//! @addtogroup img_hash
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//! @{
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/** @brief Marr-Hildreth Operator Based Hash, slowest but more discriminative.
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See @cite zauner2010implementation for details.
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*/
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class CV_EXPORTS_W MarrHildrethHash : public ImgHashBase
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{
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public:
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/**
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* @brief self explain
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*/
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CV_WRAP float getAlpha() const;
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/**
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* @brief self explain
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*/
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CV_WRAP float getScale() const;
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/** @brief Set Mh kernel parameters
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@param alpha int scale factor for marr wavelet (default=2).
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@param scale int level of scale factor (default = 1)
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*/
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CV_WRAP void setKernelParam(float alpha, float scale);
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/**
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@param alpha int scale factor for marr wavelet (default=2).
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@param scale int level of scale factor (default = 1)
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*/
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CV_WRAP static Ptr<MarrHildrethHash> create(float alpha = 2.0f, float scale = 1.0f);
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protected:
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MarrHildrethHash() {}
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};
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/** @brief Computes average hash value of the input image
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@param inputArr input image want to compute hash value,
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type should be CV_8UC4, CV_8UC3, CV_8UC1.
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@param outputArr Hash value of input, it will contain 16 hex
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decimal number, return type is CV_8U
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@param alpha int scale factor for marr wavelet (default=2).
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@param scale int level of scale factor (default = 1)
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*/
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CV_EXPORTS_W void marrHildrethHash(cv::InputArray inputArr,
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cv::OutputArray outputArr,
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float alpha = 2.0f, float scale = 1.0f);
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//! @}
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}} // cv::img_hash::
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#endif // OPENCV_MARR_HILDRETH_HASH_HPP
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