Thread: Setting exposure values on android with OpenCV
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Unread 05-16-2016, 09:14 PM
tomy tomy is offline
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FRC #3038 (I.C.E. Robotics)
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Join Date: Jan 2009
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Re: Setting exposure values on android with OpenCV
Quote:
Originally Posted by jreneew2 View Post
Hello, I finished watching 254's presentation recently and have begun working on a similar android app where it would find the target and send the data back to the roborio. I have opencv running on my phone and can run opencv functions fine.

What i am having trouble with is setting the exposure / iso values from within the code. I am trying to use CaptureRequest.set() and the app instantly crashes saying:

Code:
AndroidRuntime: FATAL EXCEPTION: Thread-3171

java.lang.NullPointerException: Attempt to invoke virtual method 'void android.hardware.camera2.CaptureRequest$Builder.set(android.hardware.camera2.CaptureRequest$Key, java.lang.Object)' on a null object reference
My code is here: http://pastebin.com/3XgvKGQN

Any help is appreciated,
Drew (Team 2053)
Not to get of topic but could you link the video. I'd be interested in watching it.
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