c++ - How to extract value from a *CvScalar Output Array? -


consider me newbie @ programming. tried search answer question before posting no luck.

i using cvavgsdv function calculate std deviation , mean of roi of image. reference is:

 cvavgsdv(leftroi, leftmean, leftstddev);

leftmean & leftstddev output arrays in form of *cvscalar how display them/access output value? need standard deviation value calculating pixel variance in image. squaring standard deviation should give me this.

regards, sheraz


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