59 lines
1.6 KiB
C++
59 lines
1.6 KiB
C++
// 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_RADIAL_VARIANCE_HASH_HPP
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#define OPENCV_RADIAL_VARIANCE_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 Image hash based on Radon transform.
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See @cite tang2012perceptual for details.
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*/
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class CV_EXPORTS_W RadialVarianceHash : public ImgHashBase
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{
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public:
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CV_WRAP static Ptr<RadialVarianceHash> create(double sigma = 1, int numOfAngleLine = 180);
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CV_WRAP int getNumOfAngleLine() const;
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CV_WRAP double getSigma() const;
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CV_WRAP void setNumOfAngleLine(int value);
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CV_WRAP void setSigma(double value);
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// internals
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std::vector<double> getFeatures();
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cv::Mat getHash();
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Mat getPixPerLine(Mat const &input);
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Mat getProjection();
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protected:
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RadialVarianceHash() {}
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};
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/** @brief Computes radial variance hash 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
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@param sigma Gaussian kernel standard deviation
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@param numOfAngleLine The number of angles to consider
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*/
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CV_EXPORTS_W void radialVarianceHash(cv::InputArray inputArr,
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cv::OutputArray outputArr,
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double sigma = 1,
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int numOfAngleLine = 180);
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//! @}
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}} // cv::img_hash::
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#endif // OPENCV_RADIAL_VARIANCE_HASH_HPP
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