Camera capture in background

asked 2012-11-27 04:13:53 -0600

franute
1 ●2

updated 2012-11-27 05:16:57 -0600

Hello everyone, I'm using openCV for face detection on Android in my application because Android's FaceDetection API [1] is not working on some devices.

For now, everything is working as expected (I have to tweak it a little to reduce false positives, but that's no problem), but I'd like to now if it could be possible to keep grabbing frames even when I lock the phone. I guess that with Android's camera capture it is not possible because, but what about openCV's VideoCapture?

Thank you all

[1] http://developer.android.com/reference/android/hardware/Camera.FaceDetectionListener.html

answered 2012-11-27 05:16:22 -0600

venky
91 ●5

Hi, I donot know which android phone you are using but a recent advertisement for Galaxy S3, shows that you can run two applications side by side, which might be interest for you. I am guessing that it might be the OS that will not allow you to do something in the background. Hope the above helps in some way. Thanks Venky

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Thank you for your answer venky. I think the feature you are referring to is also present on Galaxy Note 2, but I think it is more like a "multiple window" option. Anyway, right now I'm using a Galaxy S2 and a HTC One S.

I know that in Android the way to use background processing is through Services*, but I don't know if it is possible to create a Service with an associated VideoCapture that keeps working even though the phone is locked.

Thank you for your response, I'll keep trying things :P

http://developer.android.com/reference/android/app/Service.html

franute ( 2012-11-27 05:23:31 -0600 )edit

Thank franute for your comment. I am no expert for programming on Android devices, but would like to learn sometime (Currently interested in basic computer vision problems, and probably learning using large scale data). Thanks

venky ( 2012-11-27 06:50:03 -0600 )edit

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