使用 Opencv 从 Android 中的 CameraGLSurfaceView 拍照

Question

我在Android http://docs.opencv.org/trunk/d7/dbd/tutorial_android_ocl_intro.html实现了应用OpenCL的例子

它使用 GLSurfaceView 并在 C++ 中更新来自相机的图像。这 C++代码使用带有glReadPixels的GL库

我的问题是，是否可以使用这种架构拍照（以照片分辨率）？我试图实现camera.takePicture，这是我的错误：

04-28 16:57:18.237   203  9805 E Camera2ClientBase: takePicture: attempt to use a locked camera from a different process (old pid 0, new pid 32146)
--------- beginning of crash
04-28 16:57:18.260 32146 32279 E AndroidRuntime: FATAL EXCEPTION: GLThread 599
04-28 16:57:18.260 32146 32279 E AndroidRuntime: Process: edu.uab.cvc.camera, PID: 32146
04-28 16:57:18.260 32146 32279 E AndroidRuntime: java.lang.RuntimeException: takePicture failed
04-28 16:57:18.260 32146 32279 E AndroidRuntime:    at android.hardware.Camera.native_takePicture(Native Method)
04-28 16:57:18.260 32146 32279 E AndroidRuntime:    at android.hardware.Camera.takePicture(Camera.java:1434)
04-28 16:57:18.260 32146 32279 E AndroidRuntime:    at edu.uab.cvc.camera.MyGLSurfaceView.takePhoto(MyGLSurfaceView.java:165)
04-28 16:57:18.260 32146 32279 E AndroidRuntime:    at edu.uab.cvc.camera.MyGLSurfaceView.onCameraTexture(MyGLSurfaceView.java:139)
04-28 16:57:18.260 32146 32279 E AndroidRuntime:    at org.opencv.android.CameraGLRendererBase.onDrawFrame(CameraGLRendererBase.java:131)
04-28 16:57:18.260 32146 32279 E AndroidRuntime:    at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1535)
04-28 16:57:18.260 32146 32279 E AndroidRuntime:    at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1240)
04-28 16:57:18.276   779  3430 W ActivityManager:   Force finishing activity edu.uab.cvc.camera/.MainActivity

Answer 1

最后，我找到了Camera2 的 Google 示例。 GLSurfaceView 似乎是这个项目的一个实现。我比较了这两个项目，并创建了拍照所需的类。