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52 lines
1.8 KiB
52 lines
1.8 KiB
/** @file */
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/* The MIT License
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*
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* Copyright (c) 2008, Naotoshi Seo <sonots(at)sonots.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef CV_RAND_INCLUDED
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#define CV_RAND_INCLUDED
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#include "cv.h"
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#include "cvaux.h"
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/**
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* This function returns a Gaussian random variate, with mean zero and standard deviation sigma.
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*
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* @param rng cvRNG random state
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* @param sigma standard deviation
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* @return double
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*/
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CV_INLINE double cvRandGauss( CvRNG* rng, double sigma )
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{
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CvMat* mat = cvCreateMat( 1, 1, CV_64FC1 );
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double var = 0;
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cvRandArr( rng, mat, CV_RAND_NORMAL, cvRealScalar(0), cvRealScalar(sigma) );
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var = cvmGet( mat, 0, 0 );
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cvReleaseMat( &mat );
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return var;
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}
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/*
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rng.disttype = CV_RAND_NORMAL;
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cvRandSetRange( &rng, 30, 100, -1 ); */
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#endif
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