Opencv common functions

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Cvscalar imgmean, imgstd;
Double imgmax, imgmin;
Cvavgsdv (IMG, & imgmean, & imgstd );
Cvminmaxloc (IMG, & imgmin, & imgmax, null, null );

Printf ("mean: % f std: % F max: % F, Min: % F \ n", imgmean. val [0], imgstd. val [0], imgmax, imgmin );

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1. cvminmaxloc (image,&Minvalue,&Maxvalue,&Minlocation,&Maxlocation );

Find the data of the maximum and minimum values in the image or a group of data, and the location of the maximum and minimum values.

The first parameter is an iplimage structure or a cvmat structure. The second parameter is a minimum value of double type data, the third parameter is a maximum value of double type data, and the fourth parameter is a cvpoint structure, the fifth reference number is the cvpoint structure at the maximum output position. You can enter NULL for unnecessary information.

2. cvavgsdv (IMG, & imgmean, & imgstd)