javacv

We are developing video streaming app using JavaFx and JavaCv, While playing Stream into gridPane(8X8), we are occasionally facing splashing White Screen issue and it's continuous. Details:- new Thread(new Runnable() { @Override public void run() { frameGrabber = new FFmpegFrameGrabber(Url); frameGrabber.setVideoOption("preset","ultrafast"); frameGrabber.setOption("rtsp_transport","tcp"); frameGrabber.setOption("stimeout" , "60000"); frameGrabber.setAudioChannels(0); frameGrabber.setAudioCodec(0); try { frameGrabber.start(); } catch (Exception e) { e.printStackTrace(); } JavaFXFrameConverter

I have an IplImage that I converted in a Matrix, and now I want to iterate cell by cell. CvMat mtx = new CvMat(iplUltima); for (int i = 0; i < 100; i++) { //I need something like mtx[0][i] = someValue; } ¡¡I DID IT!! I share it: CvMat mtx = new CvMat(iplUltima); for (int i = 0; i < 100; i++) { for (int j = 0; j < 100; j++) { opencv_core.cvSet2D(mtx, i, j, CvScalar.ONE); } } iplUltima = new IplImage (mtx); Where i = row and j = column First, you need to import the following from JavaCV: import com.googlecode.javacv.cpp.opencv_core.CvMat; import static com.googlecode.javacv.cpp.opencv_core.CV

Please can some one explain how to identify square shape of contours which are not exactly separated each other. For example I need to identify the number of squares in below image and the x,y coordinates of their edges. I try to go through this question but it didn't work for me. So please can some one explain this using simple code example. This is the image that I can generated can you please explain how to identify above squares in this image. So please be kind enough to explain this. You have to use fact, that red component of each square equals 255, and do the threshold. Here's what I've

Hi i am using https://github.com/bytedeco/javacv/ for recording video. When using landscape mode orientation is fine but when i change the orientation to portrait mode the video is rotated -90 degree. Any body have an idea what i may be doing wrong. Here is the code. package org.bytedeco.javacv_android_example.record; import android.app.Activity; import android.content.Context; import android.content.pm.ActivityInfo; import android.hardware.Camera; import android.hardware.Camera.PreviewCallback; import android.media.AudioFormat; import android.media.AudioRecord; import android.media

I went through many turorials and cupple of questions in stackoverflow and I found following method which used to draw rectangles. public static void drawSquares( IplImage image, final CvSeq squares ) { if(!squares.isNull()){ CvSeq p = new CvSeq(squares.total()); cvCvtSeqToArray(squares, p, CV_WHOLE_SEQ); System.out.println(squares.total()); for(int i = 0; i < squares.total(); i ++ ) { CvPoint pts = new CvPoint(4); cvCvtSeqToArray(p.position(i), pts, CV_WHOLE_SEQ); // //cvBoundingRect(image, i); int npt[] = {4, 4}; // //DrawLine() reference http://opencv.willowgarage.com/documentation/cpp

I'm new to JavaCV and I have difficult time finding good tutorials about different issues on the topics that I'm interested in. I've succeed to implement some sort of real time video streaming from my webcam but the problem is that I use this code snippet which I found on the net : @Override public void run() { FrameGrabber grabber = new VideoInputFrameGrabber(0); // 1 for next // camera int i = 0; try { grabber.start(); IplImage img; while (true) { img = grabber.grab(); if (img != null) { cvFlip(img, img, 1);// l-r = 90_degrees_steps_anti_clockwise cvSaveImage((i++) + "-aa.jpg", img); // show