ARDroneUI_Detection_Forms

[njoi]

I am trying to use the software for tag recognition and when I run it from the Detection_Forms project it throws this error

{"The type initializer for 'Emgu.CV.CvInvoke' threw an exception."}

in the SignDetector.cs at line 73, or respectively this line

surfaceParameters = new SURFDetector(500, false);

And I havent found anything pertaining to this type of error online

[shtejv]

Weird. Have you installed EmguCV before trying to start the application?

[njoi]

I got the detection forms to load, however it doesn't actually recognize anything and the video stream on the UI is just a jumble of random colors.

Is this supposed to look this way? Is there any documentation on how to get detection to work properly? I'd like to use it to implement a very basic autonomous flight application using form detection.

[shtejv]

Which firmware do you use? The new firmware (>= 1.7) supports a new videocodec as default value. Since I haven't been able to work on the software for the past few months, I haven't included a command to switch to the "old" default codec. This is possible, but there is some work to do ... you'll have to configure a config for the application, then you can change back to the old codec (this is some work, but it has also been introduced with firmware version 1.7.

I'm sorry, but the constant changes in the API make this a difficult job, since I have not been able to work for the library for the past few months. I'll have to apologize.

[shtejv]

Try the new version of the library. I have tested it with two drones and three different firmware versions which work perfect. I hope that this will solve your problems too.

[njoi]

I will give it a try. I've been porting the software to a different device (namely, the Microsoft Surface) so if the update is effective I will write back about it and let you know how its working.