how we will get rpm of moving roulette wheel using webcam and OpenCV in android?
how we will get rpm of moving roulette wheel using webcam and OpenCV in android. I want to make an android game application which is similar to roulette game
View ArticleTranslating getPerspectiveTransform to Java
Hello, Point2f inputQuad[4]; Point2f outputQuad[4]; // The 4 points that select quadilateral on the input , from top-left in clockwise order // These four pts are the sides of the rect box used as...
View ArticleHow to analyse of data array from an image?
Hi, I would like to create an application that will capture an image of a schedule, which have the name and the time period of work for each worker but I can figure out the way of analysing the image...
View ArticleHow set Region of interes ROI on android studio using opencv?
Hello, Im trying to set a ROI on the videocapture to process the picture only on certain area inside the green lines  heres the code on...
View ArticleHow to recognize specific objects
I have been making application which recognize car light symbols on Android in Java using OpenCV. I take the images from phone's camera. I use OpenCV 3.2.0 version. What I have done so far: 1. Filter...
View ArticleAvoiding application to be closed when no camera (Android)
Hello, I made an android application using Opencv. The application used camera but for test I also use pictures. I would like to test my application on the android emulator (without camera), but if I...
View ArticleHow to apply mask to live camera in android opencv
I'm detecting blue color from live camera feed by using Core.inRange after getting the mask i.e imgThresholded when I take bitwise_and it shows the overlaping frames ,How can I get only one frame ?...
View ArticleIs it possible to share Java opencv code between Android and server?
I'm exploring OpenCV - I've been playing around with the Python API. I want to try building out an app for a fun idea I had that uses edge/contour detection. One way to do it is to have the mobile app...
View ArticleHow to call face recognition contrib module in opencv 3 Android?
We have command this query in command line,> E:\AndroidStudioProjects\OpenCv\OpenCvCmake\OpenCvMakeTest>E:\AndroidStudioProjects\OpenCv\OpenCvCmake\android-ndk-r15c\ndk-build.cmd>...
View ArticleFace tracking and gaze tracking in Android
Hi, I'm looking to perform real time face and gaze tracking using the front camera of an android smartphone. My aim is to track the user's gaze while the user moves his head from left to right and...
View ArticlePassing InputArrayOfArrays from java class to JNI
I have generated following method in JNI cpp file, JNIEXPORT void JNICALL Java_com_idesign_opencvmaketest_MainActivity_train (JNIEnv *env, jobject thisObj, jobjectArray images, jobjectArray labels) {...
View ArticleI am not able to record video which have filter effects in OpenCV
Please suggest some way to record video with filter in OpenCV in android studio.
View Articlewhat is the android device version must be used with opencv library?
I am new in android development and I need to use Opencv library with android studio for face detection and eye tracking ... but i have some questions about this field that are : - what the android...
View ArticleAndroid Camera very hot, high temperature. Suggestion for a suitable android...
I use openCV for android. My application find item at preview of camera. I use JavaCameraView. Everything is stable on the device. But with Nexus 5 (Android 6.0), the device becomes overheated,...
View ArticleImage matching in ios and android
We are making an application involving image matching.The concept is to add images(for example tea or coffee packaging) in backend. And when we scan random images (package),It should identify which...
View ArticleIs it possible to detect hologram on video feed using OpenCV?
I want to develop the apps(iOS and Android) to detect the holograms on the camera video feed. When i open the video on hologram printed doc, it has to locate the position of the hologram as did in the...
View ArticleAnisotropic Diffusion on Android
Good day. I've seen an OpenCV code from [this forum](http://answers.opencv.org/question/71005/isotropic-non-linear-diffusion-smoothing-perona-malik/) and I'm not sure how to go about applying it in...
View ArticleLink opencv native camera with android java camera and capture image
I am working on an Android app that detects squared/rectangular objects, captures their image and auto-crops the image. I am able to detect the object, however I am having difficulty linking the...
View ArticleStream processed video from Android to something
Hi, I'm doing a openCv android application. Basically I'm recording a video with a **CameraBridgeViewBase** and doing stuff with the method **onCameraFrame**. Now I want to stream the resulting Mat...
View ArticleOpenCV 3.3.0 predict mismatches with all
We called predict in Java class like this. int[] label = new int[1]; double[] d = new double[1]; label[0] = -1; d[0] = 0.0; predict(mGrey.getNativeObjAddr(), label, confidence); Log.v(TAG, "Prediction...
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