thomas11's profile - activity

Dear All, In matlab. we can setup Matlab for multicore utility and run startMatlabPool() for start running the pool. How can I have the same thing in OpenCV? How can I setup? Thanks

Dear All, According to the documents, Grabcut is interactive algorithm. The user has to input the foreground rectangle roughly and the algo cut the foreground image. Is there a way to use Grabcut to extract the foreground image automatically? Thanks

Yeah it should be straightforward. I tried two approaches. (1)Mat original = cvCreateImage(cvSize(col_size, row_size), IPL_DEPTH_8U,1); for (int y = 0; y < h; y++) { for (int x = 0; x < w; x++) {

  original.data[y * original.step + x] = (char)20;

} }

Then I look at the original.data, it is unavailable synchronous data.

IplImage *opcvImg = cvCreateImage(cvSize(col_size, row_size), IPL_DEPTH_8U,1);

Mat original = Mat(opcvImg, true);

opcvImg = ImageQueue::getQueue();//get the IplImage from the queue, the data is perfect

Mat original = cvarrToMat(opcvImg);

OR

Mat original = Mat(opcvImg, true);

Then original shows unavailable synchronous data. Thanks

Dear All, What is the opencv version with which we can start use cv::Mat? My opencv version is 2.4.1 and I am trying to convert from IplImage* to cv::Mat. I always have the error of unavailable synchronous data. Thanks

Dear all, I have OpenCV image, get the image data from the Queue.

IplImage *opcvImg = cvCreateImage(cvSize(col_size, row_size), IPL_DEPTH_8U,1); opcvImg = ImageQueue::getQueue(); Upto here, in the watch window I can see that opcvImg has all information.

But when I convert the IplImage* to cv::Mat as Mat matData(opcvImg, true); OR Mat matData = cvarrToMat(opcvImg); matData in the watch window shows Unavailable syschronous data.

Let me put in some more information, actually the code runs in a separate thread as follow

void processingbyWatershed::run() { IplImage *opcvImg = cvCreateImage(cvSize(col_size, row_size), IPL_DEPTH_8U,1);

while(1)
{

    if(!ImageQueue::isEmpty())
    {
         opcvImg = ImageQueue::getQueue();
        Mat original(opcvImg, true);
        //Mat original = cvarrToMat(opcvImg);
    }
}

}

What could be the problem? Thanks

Dear all,

It is simple but can't make it through. I convert to Mat from IplImage

IplImage *opcvImg = cvCreateImage(cvSize(col_size, row_size), IPL_DEPTH_8U,1);

opcvImg = ImageQueue::getQueue();

Mat original(opcvImg, true);

After this, when I see the original in the watch window, it shows unavailable. I did in Ubuntu. What could be the problem? Thanks

Dear All, I am working on Blob detection and my boss said to use OpenCV for my project. I did research and found that I want to implement WaterShed and Confidence Measurement for Blob detection. A few programs are found using WaterShed in OpenCV but can't find the Blob detection with Confidence Measurement. Any idea how can I implement confidence measurement blob detection in OpenCV. Thanks