n8bar's profile - activity

I get: Cannot resolve method 'CameraBridgeViewBase.getSupportedPreviewSizes()' from Android Studio IDE even before building the project. Where did it go?

I'm trying to compare card bitmaps in an android application.

The error I'm getting is:

OpenCV Error: Assertion failed (H1.type() == H2.type() && H1.type() == CV_32F) in double cv::compareHist(cv::InputArray, cv::InputArray, int), file /hdd2/buildbot/slaves/slave_ardbeg1/50-SDK/opencv/modules/imgproc/src/histogram.cpp, line 1985

Converting the Mat's to CV_32F doesn't seem to fix the problem.

Here is my code:

    String[] cardFileName= {
            "c2.jpg","c3.jpg","c4.jpg","c5.jpg","c6.jpg","c7.jpg","c8.jpg","c9.jpg","c10.jpg","cJ.jpg","cQ.jpg","cK.jpg","cA.jpg",
            "d2.jpg","d3.jpg","d4.jpg","d5.jpg","d6.jpg","d7.jpg","d8.jpg","d9.jpg","d10.jpg","dJ.jpg","dQ.jpg","dK.jpg","dA.jpg",
            "h2.jpg","h3.jpg","h4.jpg","h5.jpg","h6.jpg","h7.jpg","h8.jpg","h9.jpg","h10.jpg","hJ.jpg","hQ.jpg","hK.jpg","hA.jpg",
            "s2.jpg","s3.jpg","s4.jpg","s5.jpg","s6.jpg","s7.jpg","s8.jpg","s9.jpg","s10.jpg","sJ.jpg","sQ.jpg","sK.jpg","sA.jpg"
    };

    int[] cardValue = {
            2,3,4,5,6,7,8,9,10,11,12,13,1,
            2,3,4,5,6,7,8,9,10,11,12,13,1,
            2,3,4,5,6,7,8,9,10,11,12,13,1,
            2,3,4,5,6,7,8,9,10,11,12,13,1
    };

    double[] comparisonResults={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};


public Bitmap checkCardBitmap;
public int DetectCardValue(Bitmap cardBitmap) {

    for(int cardIndex=0; cardIndex < 52; cardIndex++) {
        String thisFile=Environment.getExternalStorageDirectory() + "/Android/data/cards/" + cardFileName[cardIndex];
        checkCardBitmap = BitmapFactory.decodeFile(thisFile);
        checkCardBitmap = Bitmap.createScaledBitmap(checkCardBitmap, cardWidth, cardHeight, false);
        Mat checkCardMat= new Mat();
        Mat cardMat= new Mat();
        Utils.bitmapToMat(checkCardBitmap, checkCardMat);
        Utils.bitmapToMat(cardBitmap, cardMat);

        checkCardMat.convertTo(checkCardMat, CvType.CV_32F);  //  <--didn't seem to help?
        cardMat.convertTo(cardMat,CvType.CV_32F);

        ////////////////////////////////////////////////////////////////////////////////////////////
        ////////////////////////////////////////////////////////////////////////////////////////////
        //this line generates the error:
        double compResult=Imgproc.compareHist(cardMat,checkCardMat,Imgproc.CV_COMP_CORREL); 
        ////////////////////////////////////////////////////////////////////////////////////////////


        comparisonResults[cardIndex] = compResult;
    }

    double max = comparisonResults[0];
    int matchedCardIndex=0;

    for (int i = 0; i < comparisonResults.length; i++) {
        if (comparisonResults[i] > max) {
            max = comparisonResults[i];
            matchedCardIndex=i;
        }
    }

    return cardValue[matchedCardIndex];
}

 

  I'm getting the following error at the line:

    public class HelloOpenCvActivity extends AppCompatActivity implements CameraBridgeViewBase.CvCameraViewListener2 {


    java.lang.NullPointerException: Attempt to invoke virtual method 'void android.view.View.setVisibility(int)' on a null object reference


What could be wrong?

 

I've completed the Hello OpenCV tutorial at http://docs.opencv.org/2.4/doc/tutori... The tutorial is the last section, called Hello OpenCV Sample.

After completing the tutorial, I get an error on the line that reads: mOpenCvCameraView.setCvCameraViewListener(this);

The error is: Cannot resolve method setCvCameraViewListener(com.natebarlowjr.helloopencv.HelloOpenCvActivity)

Any help greatly appreciated.

http://docs.opencv.org/2.4/doc/tutori...

I cannot get v3.0 to compile on linux: cameradatafeed.cpp:676: error: undefined reference to `cv::Mat::convertTo(cv::_OutputArray const&, int, double, double) const'

I do have the following necessary files included where these references are defined: cameradatafeed.h, opencv.hpp, mat.hpp etc.