Displaying processed image on screen
Hello all!! I'm working on an Android project with OpenCV library on Eclipse Platform. In this project I'm stuck at a point where I need to display the Mat image on the screen after it has been...
View ArticleNeed to find GLCM matrix
I am using OpenCV 2.4 in android (Android Studio). I want to find GLCM matrix of an image . Is there any class/function for the same ?
View ArticleI am using OpenCV in unity, how can i detect ears instead of whole face.
Actually, in my Unity3D App, i want to recognize eyes, lips, nose and ears independently but couldn't find any perfect reference.
View Articlehow to use multithreading with opencv android java
i am working on an open cv app, and it is lagging. While doing some research, i found that multithreading can help. i have no idea how it work, and cannot find a proper example to understand it. Can...
View Articlehow can i choose the thresholds of canny function in opencv to get clears...
View Articlecamera preview from opencv shows bad/incorrect image. using javacameraview
The System I'm using is: Mac + Eclipse + Opencv4Android (v3.0) all samples and everything is running correctly except for the results or quality displayed by the camera. here is a sample below of how...
View Articlei used canny function to detect the contour in my android app but i would now...
 
View ArticleOpenCV Java code running faster than OpenCV native C++ code
I have written two versions of an android application using OpenCV. OpenCV is being used for following operations: - Resizing images - Color conversion from RGB to HSV - Computing ratio of pixel values...
View Articlethe environment to build OpenCV sdk for android-x86
Hi, I was trying to build my own OpenCV SDK for android-x86 platform. I've cloned the repo from https://github.com/Itseez/opencv , and set "opencv/platforms/android/android.toolchain.cmake" as CMake...
View ArticleAndroid external camera + OpenCV
Have you ever tried getting live video stream from external camera connected to Android device to later process it with OpenCV functions? I've found some libraries that seem to allow external camera...
View Articlehow to get source/header files of libjpeg in opencv4ndk 3rd-party
Hello, I used libjpeg.a and libtiff.a in opencv for my project. I downloaded opencv-3.1.0 for Mac. When I build my project on Mac, I included the source/header files of jpeg/tiff from the above...
View ArticleIt seems that you device does not support camera - only with some apps
Hi, Trying to get camera images using OpenCV on Android the app is crashing with the error: 'It seems that you device does not support camera (or it is locked)' However, if I run the samples from this...
View ArticleIs there any solution with opencv which complete forms ?
I have to make a clear picture with opencv to apply then OCR with tesseract .I try many methods but picture still have incompletes letters (so i will not be able to identify theses letters by OCR ). t...
View Articlebetter explanations of ORB
Hi guys, I'm working with OpenCV4Android but i'm experiencing so problems on correctly understand ORB methods and what can I know from that class. Most of all, I want to know if: passing a generic...
View ArticleText extraction and segmentation using opencv and java for android application
I have to do an android application that use opencv and java language to extrat objects from images and put them into squares .I should get a result like this  Tutorial but when i import all the libraries in Eclipse i get this error...
View ArticleAndroid Studio: OpenCV + NDK
Does anyone have a good tutorial on how to use OpenCV in C++ (NDK) with the latest Android Studio?
View ArticleHow can i use opencv FloodFill with java?
I tried to use floodfill in my source code but the application doesn't work and this is my code : `final Bitmap bitmap = BitmapFactory.decodeFile(fileUri.getPath(),options); Mat tmp = new...
View ArticleConvert card response in binary matrix
Hi, I need some help about how to start develop a application in Android that recognize a card response for tests and convert it to a binary matrix. The card response filled will be like this: 
