android opencv画轮廓,Android OpenCV - 在轮廓上绘制矩形

如何将List contours转换为Rect[] contoursArray，以便我可以使用Core.rectangle(mRgba, contoursArray[i].tl(), contoursArray[i].br(), (255,0,0,255), 3)在其上绘制矩形？Android OpenCV - 在轮廓上绘制矩形

public Mat onCameraFrame(CvCameraViewFrame inputFrame) {

mRgba = inputFrame.rgba();

mGray = inputFrame.gray();

//Touch screen to track by color and draw rectangle on it

if (mItem_select && Color_Select){

mDetector.process(mRgba);

List contours = mDetector.getContours();

Log.e(TAG, "Contours count: " + contours.size());

Imgproc.drawContours(mRgba, contours, - 1, Rectangle_Color);

//Draw rectangle on it

Rect[] contoursArray = contours.toArray(); //error:Type mismatch: cannot convert from Object[] to Rect[]

Core.rectangle(mRgba, contoursArray.tl(), contoursArray.br(), (255, 0, 0, 255), 3); //error:Cannot invoke tl() on the array type Rect[]、Cannot invoke br() on the array type Rect[]

Mat colorLabel = mRgba.submat(4, 68, 4, 68);

colorLabel.setTo(mBlobColorRgba);

Mat spectrumLabel = mRgba.submat(4, 4 + mSpectrum.rows(), 70, 70 + mSpectrum.cols());

mSpectrum.copyTo(spectrumLabel);

}

return mRgba;

}

2013-09-30

Tony

+0

啊，不要试图将积分转换为矩形，而不是从轮廓采取外接矩形框，并绘制矩形！ http://docs.opencv.org/java/org/opencv/imgproc/Imgproc.html#boundingRect(org.opencv.core.MatOfPoint) –

+0

这可能有助于http://docs.opencv.org/doc/tutorials/ imgproc/shapedescriptors/bounding_rects_circles/bounding_rects_circles.html＃边界，rects-圈 –