ARC, Inc - API Documentation

This class is returned from the GetStats method and contains the calculated statistics data. Access to the statistics data is through the following public class members:

CLASS MEMBER	TYPE	DESCRIPTION
gMin	double	Minumum pixel value
gMax	double	Maximum pixel value
gTotalPixels	double	Total pixel count
gMean	double	Mean pixel value ( { sum of pixels } / { total pixel count } )
gVariance	double	Variance ( { 1 / { total pixels } } * sum{ { pixel - { pixel mean } }^2 } )
gStdDev	double	Standard deviation ( sqrt{ variance } )
gSaturatedPixCnt	double	Total number of saturated pixels ( >= 2^16 for 16-bit images; >= 2^32 for 32-bit images )

        // This code demonstrates how to print out the min/max
        // pixel value for an image.

        #include <iostream>
        #include "CController.h"
        #include "CImage.h"

        using namespace std;
        using namespace arc;

        int main()
        {
            try {
                CController cController;
                CImage cImg;
     
                // ....
                //
                // Take an image, which will reside in the kernel
                // image buffer ( cController.mapFd )
                //
                // ....

                //
                // Assumes a 512x600 pixel image was taken and resides
                // in the kernel image buffer ( cController.mapFd )
                //
                CImage::CImgStats cImgStats = cImg.GetStats( cController.mapFd,
                                                             512,
                                                             600 );

                cout << "Image min: " << cImgStats.gMin << endl
                     << "Image max: " << cImgStats.gMax << endl
                     << "Image mean: " << cImgStats.gMean << endl
                     << "Image total pixels: " << cImgStats.gTotalPixels
                     << endl;
            }
            catch ( std::exception &e )
            {
                cerr << "Exception Occurred: " << e.what() << endl;
            }
        }