JavaCV & Android

阅读更多 JavaCV-0.5基于OpenCV-2.4.5，在Android上运行按照教程设置即可，有几个注意事项：

教程： https://code.google.com/p/javacv/

Eclipse (Android 2.2 or newer):1.Follow the instructions on this page: http://developer.android.com/training/basics/firstapp/2.Go to File > New > Folder, select your project as parent folder, type "libs/armeabi" as Folder name, and click Finish.3.Copy javacpp.jar and javacv.jar into the newly created "libs" folder.4.Extract all the *.so files from javacv-android-arm.jar, opencv-2.4.5-android-arm.jar, and ffmpeg-1.2-android-arm.jar directly into the newly created "libs/armeabi" folder, without creating any of the subdirectories found in the JAR files.5.Navigate to Project > Properties > Java Build Path > Libraries and click "Add JARs...".6.Select both javacpp.jar and javacv.jar from the newly created "libs" folder.

注意事项：
1.上面第三步和第四步是分别复制到libs和libs/armeabi目录
2.该库运行需要CPU支持FPU（要在不支持FPU的机器上运行，需要自己修改参数重新编译库，运行效果可能很差）
查看CPU是否支持FPU方法： http://stackoverflow.com/questions/8161184/detecting-fpu-presence-on-android

# cat /proc/cpuinfo Processor       : ARMv7 Processor rev 3 (v7l)BogoMIPS        : 249.96Features        : swp half thumb fastmult vfp edsp neon vfpv3 CPU implementer : 0x41CPU architecture: 7CPU variant     : 0x1CPU part        : 0xc08CPU revision    : 3[ ... ]If the "Features" line lists at least vfp, then the ARM SoC has an FPU.

3.模拟器不支持摄像头
4.如果没有后置摄像头，需要修改示例代码
FacePreview.java中
mCamera = Camera.open(); 改为 mCamera = Camera.open(0);

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