Chief Delphi - Camera particleToImagePercent not working

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- - Camera particleToImagePercent not working (http://www.chiefdelphi.com/forums/showthread.php?t=83015)

Camera particleToImagePercent not working

So what we are trying to do currently is get a feed from the camera stating the percentage of the area of the soccer ball is compared to the whole camera image. I am getting odd numbers though. They have ranged from .0075 to 11.86. I have no clue how to read these and I haven't been able to find it. Also, we keep getting a watchdog error with the following code in teleopContinuous. Any ideas? Thanks everybody!

Code:

Watchdog.getInstance().feed();

         Timer.delay(10.0);

         int numParticle = 0;

         

         m_autoPeriodicLoops++;

         numParticle = 0;



         try

         {

            if (cam.freshImage())

            {

                colorImage = cam.getImage();

                binaryImage = colorImage.thresholdRGB(80, 110, 150, 180, 80, 110);

                ParticleAnalysisReport[] par = binaryImage.getOrderedParticleAnalysisReports();

                ParticleAnalysisReport par2 = par[0];



                double percentageSum, soccerBallPercentage;



                m_DriverStationLCD.println(DriverStationLCD.Line.kUser3,1,"" + par[numParticle].particleToImagePercent);

                numParticle++;



                /*for (int i=0; i<par.length-1; i++)

                 {



                    percentageSum = par2.particleToImagePercent;

                    soccerBallPercentage = percentageSum/par.length;

                 }*/

            }

         }



         catch (AxisCameraException ex)

         {

            ex.printStackTrace();

         }



         catch (NIVisionException ex)

         {

            ex.printStackTrace();

         }

Re: Camera particleToImagePercent not working

Have you tried to do this with vision asst? Often, you need to explore a handful of images looking for the right numbers, perhaps run a filter over the image first, etc.

Figuring out these steps with nothing but printf can be quite difficult.

Greg McKaskle

Re: Camera particleToImagePercent not working

We don't have Vision Assistant. Is there a free download for it?

Re: Camera particleToImagePercent not working

its in the labview install (first CD)