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Run the official face-detection sample and find the problem

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);