rainY's profile - activity

@holger Database image size is no problem.This database I got from AT&T Facedatabase . And,The train method needs

Android project environment!

I see the official example, the two parameters passed in are vector< Mat> images and vector< int> labels;
code below:

vector<Mat> images;   
vector<int> labels;
// Read in the data (fails if no valid input filename is given, but you'll get an error message):
try {
    read_csv(fn_csv, images, labels);
} catch (cv::Exception& e) {
    cerr << "Error opening file \"" << fn_csv << "\". Reason: " << e.msg << endl;
    // nothing more we can do
    exit(1);
}
// Get the height from the first image. We'll need this
// later in code to reshape the images to their original
// size AND we need to reshape incoming faces to this size:
int im_width = images[0].cols;
int im_height = images[0].rows;
// Create a FaceRecognizer and train it on the given images:
Ptr<FisherFaceRecognizer> model = FisherFaceRecognizer::create();
model->train(images, labels);

But in my compiled Opencv4Android library, the definition of the train method is like this.

//
// C++:  void cv::face::FaceRecognizer::train(vector_Mat src, Mat labels)
//
//javadoc: FaceRecognizer::train(src, labels)
public  void train(List<Mat> src, Mat labels)
{
    Mat src_mat = Converters.vector_Mat_to_Mat(src);
    train_0(nativeObj, src_mat.nativeObj, labels.nativeObj);

    return;
}

Why does the second argument of the train method become Mat, shouldn't it be a collection of 'int'?

how to convert int array to Mat in android?

face recognize occur error in execute train method. detail code : private LoaderCallbackInterface mLoaderCallback = new

thanks , let me try.

how to convert int array to mat in android? how to convert int array to Mat in android?

@berak how convert arraylist<integer> to Mat ??

@berak how to convert vector<int> to Mat in java ? Can you give me a code sample ?

@berak help please.

FaceRecognizer Parameter problem of the train method Android project environment! I see the official example, the

System information (version)

OpenCV => 3.4

Operating System / Platform => Android

Compiler => cmake

Detailed description

Run the official face-detection sample and find that the value detected by the face is incorrect. It is clear that the current screen has no face, but the detected rectangular frame is still displayed.

code segment

 mJavaDetector.detectMultiScale(mGray, faces, 1.1, 2, 2, // TODO: objdetect.CV_HAAR_SCALE_IMAGE
                new Size(mAbsoluteFaceSize, mAbsoluteFaceSize), new Size());
  Rect[] facesArray = faces.toArray();
for (int i = 0; i < facesArray.length; i++)
    Imgproc.rectangle(mRgba, facesArray[i].tl(), facesArray[i].br(), FACE_RECT_COLOR, 3);

@berak My problem is that the current frame has no face, but it detects the "face"

@berak I don't understand what you mean.

@berak minNeighbours I have already set it up, but there is still a problem

used haarcascade_frontalface_default

Run the official face-detection sample and find the problem System information (version) OpenCV => 3.4 Operatin

@berak in front mode ,i try to use Core.flip(Mat src, Mat dst, int flipCode) ,and flipCode select 1(1>0).then, mTra

@berak isUpdate = mTracker.update(mSrcMat, mSelectArea); Log.e("rain", "run: -- isUpdate = "+isUpdate+"--"+mSelectAre

Tracking direction is reversed in front Camera mode when i use tracker to track object. in back Camera mode,The trac

@berak OK, Do you know this question?

@berak OK

Where to place the pretrained data for GOTURN tracker in Android project? @nrparikh @00Zetti

I try medianflow. Occur this issue . app crash in TrackerMedianFlow

@berak I try TrackerMedianFlow algorithm At high resolution, its frame rate meets my requirements.But, when the target t

ok thanks

When target dismiss app crash in TrackerMedianFlow Tracking mode crash info below: --------- beginning of crash 07-27

@berak Where is model/prototxt? I didn't see it in my o4a/install dir.

Occur crash when used TrackerGOTURN in Android CvException [org.opencv.core.CvException: cv::Exception: OpenCV(3.4.2-de

@berak Did your conclusion be tested with this code? Tracking sample Is fps too low or not caused by VideoCapture? My d

@Eduardo "Try to resize your image to a lower resolution, perform the tracking at this scale and update the bounding bo

@sturkmen Track anything,I only need to specify a region to track which area I am delineating.

@berak Is there any other solution?

hi berak, I closed the issue new . But I have tried the algorithms you mentioned, I found that the KCF effect is the bes

opencv Tracker is too slow in high revolution! System information (version) OpenCV => 3.4.2: Operating System /