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Access Mobile Camera From Native C++ vs Android

asked 2012-12-27 12:32:40 -0500

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Which is better to access camera from native C++ code using openCV capture or to access it using normal android preview methods (Like in Tutorial 4 in samples)?

According to speed of process? controlling capture like number of frames, focus and resolution ? re display the image in android surface?

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answered 2012-12-28 02:43:24 -0500

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Native OpenCV Camera (VideoCapture) and standard Android java camera uses the same low level base classes, so potentially have the same facilities in performance and camera control. But there is some differences.

  1. OpenCV VideoCapture operates with native OpenCV Mat objects, that can simplify processing and improve performance, against Java camera.

  2. There is some issues with native Camera on some TI based devices with old Android versions and some devices with Android 4.0.x. You cannot use native camera if application will be targeted for them.

  3. Not all camera options are implemented in VideoCapture class. Current implementation of camera controlling options is not tested on wide spectrum of devices, so you can get some issues with it.

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Asked: 2012-12-27 12:32:40 -0500

Seen: 4,366 times

Last updated: Dec 28 '12