HOW TO DETERMINE THE VALUE OF K AND C IN GAUSSIAN SURROUND FUNCTION

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sonam s 2014 年 5 月 1 日

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https://jp.mathworks.com/matlabcentral/answers/127813-how-to-determine-the-value-of-k-and-c-in-gaussian-surround-function

コメント済み: Walter Roberson 2015 年 8 月 22 日

F(x,y) = k* exp(-r2 / c2 )

here the function f is a gaussian function.this function used in retinex algorithm.

R(x,y)=log[I(x,y)]-log[I(x,y)*F(x,y)] R is the retinex output,I is the input image,r=x2+y2; c is the surround space constant and k is such that ∫∫ F(x,y) dx dy =1.

what is mean by surround space constant

please help me about the values of c and k

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Walter Roberson 2015 年 8 月 22 日

Those formula are wrong. All of the squares have been written as just 2 without any indication that squaring is being done, and r is missing a square root. Other parts may be wrong. We need the correct formulae. We also need the integration bounds

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Answer 1

Abdullah 2015 年 8 月 22 日

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https://jp.mathworks.com/matlabcentral/answers/127813-how-to-determine-the-value-of-k-and-c-in-gaussian-surround-function#answer_190028

Hello Mr Sonam s I'm having same your question today, Please did you got any answers to your quesitions? Now I'm coding the SSR and MSR but I still dont understand how to write the Gaussion Surround Function equations. I will be waiting for your reply Thanks a lot