how to use openCV?

[ganchara]

Originally Posted by DjScribbles

the threshold and particle analysis are both done in the C++ outside. (we also switched the vision assist file to a cpp file to evade some big errors)

When you say that the threshold and particle analysis are done in the C++ how does that work, because that would mean you went from C++ for the plane extraction and threshold, to VA to do the convex hull and particle filter, and then back to C++ for the final particle analysis?

Paul, in your first post you say that to do off cRIO processing you would have to port openCV into vxWorks, but then in your most recent post you say you don't need to port it to do off cRIO processing.

[violinuxer]

Another programmer from team 2523 here...

To clarify- we plan to do the following:

1. Get the image from the camera.
2. Process image on drivestation computer. To do this we use the javacv libraries included in SmartDashboard. We determine the offset of the target from the center of the camera image.
3. Using NetworkTables, send this data back to the robot
4. Move the robot.
5. Rinse, repeat

AFAIK, The OpenCV has to be written manually. Am I right? An automation utility would be great...

Thanks!

violinuxer

[catacon]

OpenCV is just a set of C++/Java/Python libraries. It doesn't generate any code for you....

[violinuxer]

Originally Posted by catacon

OpenCV is just a set of C++/Java/Python libraries. It doesn't generate any code for you....

Thought so... I just don't know how to use the wrappers provided with SmartDashboard. This is the best I have been able to find:

http://pastebin.com/cYtQiKpF


Gotta love javadocs!

violinuxer

[violinuxer]

One more thing: where might we find the docs for WPI's JavaCV implementation?

Thanks!

violinuxer

[DjScribbles]

Originally Posted by ganchara

When you say that the threshold and particle analysis are done in the C++ how does that work, because that would mean you went from C++ for the plane extraction and threshold, to VA to do the convex hull and particle filter, and then back to C++ for the final particle analysis?

binaryImage = colorImage->ThresholdHSL(######);
imaqImage = binaryImage->GetImaqImage();
IVA_ProcessImage(imaqImage); //In here we just convex hull and particle filter
vector<ParticleAnalysisReport> *reports = binaryImage->GetOrderedParticleAnalysisReports();

[ganchara]

Originally Posted by DjScribbles

binaryImage = colorImage->ThresholdHSL(######);
imaqImage = binaryImage->GetImaqImage();
IVA_ProcessImage(imaqImage); //In here we just convex hull and particle filter
vector<ParticleAnalysisReport> *reports = binaryImage->GetOrderedParticleAnalysisReports();

if the code is in C++ where are you running it? on the driver station or the robot? My team is planning to run our image processing on the DS, which supposedly can't send data back to the robot while in C++.

[PaulDavis1968]

Originally Posted by ganchara

if the code is in C++ where are you running it? on the driver station or the robot? My team is planning to run our image processing on the DS, which supposedly can't send data back to the robot while in C++.

I am going to use the JavaCV wrapper. But you could always send data using c++ you would just have to have code that talks to crio over the network.

[Fischerk12]

Ok we have been running into the issue of not having the wpijavacv libraries. Where can we get these or if we have them already where are they?

[ganchara]

they are downloaded with the smartdashboard

[PaulDavis1968]

Originally Posted by ganchara

When you say that the threshold and particle analysis are done in the C++ how does that work, because that would mean you went from C++ for the plane extraction and threshold, to VA to do the convex hull and particle filter, and then back to C++ for the final particle analysis?

Paul, in your first post you say that to do off cRIO processing you would have to port openCV into vxWorks, but then in your most recent post you say you don't need to port it to do off cRIO processing.

Sorry for the confusion. If on crio you would need to do a port.

[rdr2510]

There is my code to use openCV 2.3 with delphi 7
http://www.developpez.net/forums/d13...i/#post7204310