Jni

Facebook Twitter

OpenCV4Android - OpenCV DevZone. WikiStart » OpenCV4Android homepage is here: This wiki is for co-developers.

OpenCV4Android - OpenCV DevZone

Submitting a bug¶ Have you done your homework? Let's check it: Please check that you use the latest version of OpenCV4Android. Logcat output¶ 1. Developer documentation¶ Building OpenCV4Android from trunk. AndroidDependencies - Gnash Project Wiki. From Gnash Project Wiki Gnash unfortunately has many dependencies, most of which aren't 100% setup for cross compiling. These build notes depend on the most recent version of my Android C++ toolchain. I've got a lot of experience at cross configuring and cross compiling, so unfortunately, I did this the brute force way, rather than fix all the bugs in all the packages.

There is also an order one needs to follow when building up all the dependencies from scratch.These package notes are in the proper order. The standard set of build options for everything is -fexceptions -frtti. the older -mandroid option is enabled in GCC by default now when you configure using arm-linux-androideabi as the host. --host=arm-linux-androideabi --build=`config.guess` --prefix=/usr/local/android-toolchain/sysroot/usr --prefix of course being where this gets installed after building. It's also very common to redefine the variables make uses at either configure or build time. Android freetype 2.3.7. Javacpp - The missing bridge between Java and native C++ Introduction JavaCPP provides efficient access to native C++ inside Java, not unlike the way some C/C++ compilers interact with assembly language.

javacpp - The missing bridge between Java and native C++

No need to invent new languages such as with SWIG, SIP, C++/CLI, Cython, or RPython as required by cppyy. Instead, it exploits the syntactic and semantic similarities between Java and C++. Under the hood, it uses JNI, so it works with all implementations of Java SE, in addition to Android, Avian, and RoboVM (instructions). The new JavaCPP Presets subproject also demonstrates early parsing capabilities of C/C++ header files that already show promising and useful results with at least OpenCV, FFmpeg, libdc1394, OpenKinect, videoInput, and ARToolKitPlus. Please feel free to ask questions on the mailing list if you encounter any problems with the software!

Required Software To use JavaCPP, you will need to download and install the following software: To produce binary files for Android, you will also have to install: Android NDK r9c RoboVM 0.0.7 Changes. Javacv - Java interface to OpenCV and more. // Preload the opencv_objdetect module to work around a known bug.

javacv - Java interface to OpenCV and more

Loader.load(opencv_objdetect.class); // We can "cast" Pointer objects by instantiating a new object of the desired class. CvHaarClassifierCascade classifier = new CvHaarClassifierCascade(cvLoad(classifierName)); if (classifier.isNull()) { System.err.println("Error loading classifier file \"" + classifierName + "\". "); System.exit(1); } // The available FrameGrabber classes include OpenCVFrameGrabber (opencv_highgui), // DC1394FrameGrabber, FlyCaptureFrameGrabber, OpenKinectFrameGrabber, // PS3EyeFrameGrabber, VideoInputFrameGrabber, and FFmpegFrameGrabber. FrameGrabber grabber = FrameGrabber.createDefault(0); grabber.start(); // Objects allocated with a create*() or clone() factory method are automatically released // by the garbage collector, but may still be explicitly released by calling release(). // You shall NOT call cvReleaseImage(), cvReleaseMemStorage(), etc. on objects allocated this way.