// 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_BLOCK_MEAN_HASH_HPP
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#define OPENCV_BLOCK_MEAN_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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enum BlockMeanHashMode
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{
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BLOCK_MEAN_HASH_MODE_0 = 0, //!< use fewer block and generate 16*16/8 uchar hash value
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BLOCK_MEAN_HASH_MODE_1 = 1, //!< use block blocks(step sizes/2), generate 31*31/8 + 1 uchar hash value
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};
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/** @brief Image hash based on block mean.
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See @cite zauner2010implementation for details.
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*/
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class CV_EXPORTS_W BlockMeanHash : public ImgHashBase
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{
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public:
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/** @brief Create BlockMeanHash object
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@param mode
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*/
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CV_WRAP void setMode(int mode);
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CV_WRAP std::vector<double> getMean() const;
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CV_WRAP static Ptr<BlockMeanHash> create(int mode = BLOCK_MEAN_HASH_MODE_0);
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protected:
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BlockMeanHash() {}
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};
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/** @brief Computes block mean hash of the input image
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@param inputArr input image want to compute hash value, type should be CV_8UC4, CV_8UC3 or CV_8UC1.
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@param outputArr Hash value of input, it will contain 16 hex decimal number, return type is CV_8U
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@param mode
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*/
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CV_EXPORTS_W void blockMeanHash(cv::InputArray inputArr,
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cv::OutputArray outputArr,
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int mode = BLOCK_MEAN_HASH_MODE_0);
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//! @}
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}} // cv::img_hash::
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#endif // OPENCV_BLOCK_MEAN_HASH_HPP
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