How to add a face database in opencv face recognition andorid app?
I am new to android and opencv. i go through the opencv mobile app for face recogniton which is available in play store(...
View Articleprogramm freezes when calling cvtColor() or HoughCircles() maybe bug ?
Hi, im new to opencv ... I use Android Studio 2.1.2 and opencv 3.1.0 opencv is running, i checked with static { if (!OpenCVLoader.initDebug()) { Log.d(TAG, "OpenCV not loaded"); } else { Log.d(TAG,...
View ArticleJavaCV - LogPolar or LinearPolar
Is logPolar or linearPolar in the Opencv Java API? I've looked but I can't seem to find it.
View ArticleCapturing IP camera stream with VideoCapture in Android
I would like to capture an IP camera stream with `VideoCapture` in Android. I am using the latest OpenCV v3.1 which reportedly supports mjpg stream capture. Below is how I am trying to open the...
View ArticleOpenCV 3.1 Android Sample: Errors in .cpp & .h file
Hi, i wanna test opencv with android but i've got some errors when i use the android sample "face detection". In the c++ files there are several problems: Here you can see the errors:...
View Articlewhat is "public camera_activity() { }"?
public camera_activity() { } " public camera_activity() { }" is deprecated? I can see " public camera_activity() { }" in old android source code I am using opencv 3.1 for android what is " public...
View ArticleRough outline for grocery shopping Android app
Given a library of 500 or 1000 pictures of items from a grocery store shelf, and the requirement to detect any of those items using an Android device's camera, what would be some logical ways to...
View ArticleGoogle play alert about libpng security warning with openCV 2.4.11
Im using openCV to write c++ and java for my Android application. there is new security alert from Google play "libpng containing a security vulnerability". libpng contains a security vulnerability...
View ArticleCreate libopencv_java.so from source
Hi I've downloaded openCV source code and follow http://code.opencv.org/projects/opencv/wiki/Building_OpenCV4Android_from_trunk (OpenCV build section) to build for Android. after running make -j8 I see...
View ArticleROI in android
I want to make a app that enable use to select ROI and save it to gallery like this . This is the...
View ArticleOpenCV4Android 3.1 Mat to Allocation Renderscript
I am making an Android app to simulate colourblindness. It takes a camera feed and manipulates at runtime. - My question: I have an OpenCV Mat object rgba, containing all Pixels of a given frame with...
View ArticleOpenCV manager 2.4
I'm making a project using OpenCV on android android studio. I am using OpenCV library 3.0 because I made a project to calculate the image moments, but the library as Imgproc.Moments not exist in the...
View Articleopen api reference for android
where can I find open api reference for android? could you tell me?
View ArticleDrawMatching between two images - image recognition
I was trying to show the matched keypoints between two Images (one that is captured from my camera and the other from the database) Can anyone help me out in writing DrawMatches function in my code in...
View ArticleOpenCV multi-threading frames on Android
I am doing some work with OpenCV on Android. My code was all on the Java interface and its performance was very bad, so I implemented almost all the image processing with JNI. So on Java I have:...
View Article3.1 build for "armeabi-v7a with NEON" fails
On my OSX machine I added -DANDROID_ABI="armeabi-v7a with NEON" to the cmake command in platforms/scripts/cmake_android_arm.sh When I now execute make -j5 in build_android_arm directory I get...
View Articlehow to get camera frame whitout showing it on activity windows
Hi, So a got a problem with the use of "implements CvCameraViewListener2". If anderstoud that we need to setContentView of the activity if not we cannot get the frame on onCameraFrame. My probleme is...
View ArticleCan't make CameraGLSurfaceView works on Android
Hi, I'm trying to run the example from this link: https://github.com/opencv/opencv/tree/master/samples/android/tutorial-4-opencl The project compiles fine, but when i run the application on my Sony...
View Articlendk-build tutorial-4-opencl
Hello everyone, I was searching around for ways to use camera2 with OpenCV, and came across [this tutorial](https://github.com/opencv/opencv/tree/master/samples/android/tutorial-4-opencl). However,...
View ArticleWhere to find example for OpenCV on Android
Hi, OpenCV on android is quite different from the C++ version. Data in method are not the same. The vector as change to Mat. So it is quite difficult to use it without any documentation on the use of...
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