How i can Detected ball circle accurately ؟

-1

The circle is not specified correctly

I try to using open cv library

void DetectedOrginal()

{

    try

    {

        Image<Bgr, byte> original = new Image<Bgr, byte>(@"c:data5.png");

        UMat grayscale = new UMat();

        UMat pyrdown = new UMat();

        UMat canny = new UMat();



        double cannyThreshold = 128;



        CvInvoke.CvtColor(original, grayscale, ColorConversion.Bgr2Gray);

        // remove noise and run edge detection

        CvInvoke.PyrDown(grayscale, pyrdown);

        CvInvoke.PyrUp(pyrdown, grayscale);

        CvInvoke.Canny(grayscale, canny, cannyThreshold, cannyThreshold * 2);



        Image<Bgr, byte> result = original.Copy();

        // find and draw circles   

        VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint();

        CvInvoke.FindContours(canny, contours, null, RetrType.List, ChainApproxMethod.ChainApproxSimple);

        //CvInvoke.DrawContours(result, contours, -1, new MCvScalar(0, 0, 255));

        for (int i = 0; i < contours.Size; i++)

        {

            Ellipse ellipse = new Ellipse(CvInvoke.FitEllipse(contours[i]));

            result.Draw(ellipse, new Bgr(Color.Red), 1);

        }



        result.Save(@"c:/data/2.png");

    }

    catch (Exception e)

    {



        MessageBox.Show(e.Message);

    }

}

enter image description here

edited Dec 28 '18 at 10:25

beso9595

1,0421713

asked Dec 28 '18 at 5:55

Doe

1

This is one of the close reasons we have "Questions seeking debugging help ("why isn't this code working?") must include the desired behavior, a specific problem or error and the shortest code necessary to reproduce it in the question itself" Can you please edit this question so we can immediately understand what the problem is and what you are trying to achieve
– TheGeneral
Dec 28 '18 at 6:01

add a comment |

-1

The circle is not specified correctly

I try to using open cv library

void DetectedOrginal()

{

    try

    {

        Image<Bgr, byte> original = new Image<Bgr, byte>(@"c:data5.png");

        UMat grayscale = new UMat();

        UMat pyrdown = new UMat();

        UMat canny = new UMat();



        double cannyThreshold = 128;



        CvInvoke.CvtColor(original, grayscale, ColorConversion.Bgr2Gray);

        // remove noise and run edge detection

        CvInvoke.PyrDown(grayscale, pyrdown);

        CvInvoke.PyrUp(pyrdown, grayscale);

        CvInvoke.Canny(grayscale, canny, cannyThreshold, cannyThreshold * 2);



        Image<Bgr, byte> result = original.Copy();

        // find and draw circles   

        VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint();

        CvInvoke.FindContours(canny, contours, null, RetrType.List, ChainApproxMethod.ChainApproxSimple);

        //CvInvoke.DrawContours(result, contours, -1, new MCvScalar(0, 0, 255));

        for (int i = 0; i < contours.Size; i++)

        {

            Ellipse ellipse = new Ellipse(CvInvoke.FitEllipse(contours[i]));

            result.Draw(ellipse, new Bgr(Color.Red), 1);

        }



        result.Save(@"c:/data/2.png");

    }

    catch (Exception e)

    {



        MessageBox.Show(e.Message);

    }

}

enter image description here

edited Dec 28 '18 at 10:25

beso9595

1,0421713

asked Dec 28 '18 at 5:55

Doe

1

This is one of the close reasons we have "Questions seeking debugging help ("why isn't this code working?") must include the desired behavior, a specific problem or error and the shortest code necessary to reproduce it in the question itself" Can you please edit this question so we can immediately understand what the problem is and what you are trying to achieve
– TheGeneral
Dec 28 '18 at 6:01

add a comment |

-1

The circle is not specified correctly

I try to using open cv library

void DetectedOrginal()

{

    try

    {

        Image<Bgr, byte> original = new Image<Bgr, byte>(@"c:data5.png");

        UMat grayscale = new UMat();

        UMat pyrdown = new UMat();

        UMat canny = new UMat();



        double cannyThreshold = 128;



        CvInvoke.CvtColor(original, grayscale, ColorConversion.Bgr2Gray);

        // remove noise and run edge detection

        CvInvoke.PyrDown(grayscale, pyrdown);

        CvInvoke.PyrUp(pyrdown, grayscale);

        CvInvoke.Canny(grayscale, canny, cannyThreshold, cannyThreshold * 2);



        Image<Bgr, byte> result = original.Copy();

        // find and draw circles   

        VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint();

        CvInvoke.FindContours(canny, contours, null, RetrType.List, ChainApproxMethod.ChainApproxSimple);

        //CvInvoke.DrawContours(result, contours, -1, new MCvScalar(0, 0, 255));

        for (int i = 0; i < contours.Size; i++)

        {

            Ellipse ellipse = new Ellipse(CvInvoke.FitEllipse(contours[i]));

            result.Draw(ellipse, new Bgr(Color.Red), 1);

        }



        result.Save(@"c:/data/2.png");

    }

    catch (Exception e)

    {



        MessageBox.Show(e.Message);

    }

}

enter image description here

edited Dec 28 '18 at 10:25

beso9595

1,0421713

asked Dec 28 '18 at 5:55

Doe

The circle is not specified correctly

I try to using open cv library

void DetectedOrginal()

{

    try

    {

        Image<Bgr, byte> original = new Image<Bgr, byte>(@"c:data5.png");

        UMat grayscale = new UMat();

        UMat pyrdown = new UMat();

        UMat canny = new UMat();



        double cannyThreshold = 128;



        CvInvoke.CvtColor(original, grayscale, ColorConversion.Bgr2Gray);

        // remove noise and run edge detection

        CvInvoke.PyrDown(grayscale, pyrdown);

        CvInvoke.PyrUp(pyrdown, grayscale);

        CvInvoke.Canny(grayscale, canny, cannyThreshold, cannyThreshold * 2);



        Image<Bgr, byte> result = original.Copy();

        // find and draw circles   

        VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint();

        CvInvoke.FindContours(canny, contours, null, RetrType.List, ChainApproxMethod.ChainApproxSimple);

        //CvInvoke.DrawContours(result, contours, -1, new MCvScalar(0, 0, 255));

        for (int i = 0; i < contours.Size; i++)

        {

            Ellipse ellipse = new Ellipse(CvInvoke.FitEllipse(contours[i]));

            result.Draw(ellipse, new Bgr(Color.Red), 1);

        }



        result.Save(@"c:/data/2.png");

    }

    catch (Exception e)

    {



        MessageBox.Show(e.Message);

    }

}

enter image description here

c# opencv

edited Dec 28 '18 at 10:25

beso9595

1,0421713

asked Dec 28 '18 at 5:55

Doe

edited Dec 28 '18 at 10:25

beso9595

1,0421713

asked Dec 28 '18 at 5:55

Doe

edited Dec 28 '18 at 10:25

beso9595

1,0421713

edited Dec 28 '18 at 10:25

beso9595

1,0421713

edited Dec 28 '18 at 10:25

beso9595

1,0421713

asked Dec 28 '18 at 5:55

Doe

asked Dec 28 '18 at 5:55

Doe

asked Dec 28 '18 at 5:55

Doe

1

This is one of the close reasons we have "Questions seeking debugging help ("why isn't this code working?") must include the desired behavior, a specific problem or error and the shortest code necessary to reproduce it in the question itself" Can you please edit this question so we can immediately understand what the problem is and what you are trying to achieve
– TheGeneral
Dec 28 '18 at 6:01

add a comment |

1

This is one of the close reasons we have "Questions seeking debugging help ("why isn't this code working?") must include the desired behavior, a specific problem or error and the shortest code necessary to reproduce it in the question itself" Can you please edit this question so we can immediately understand what the problem is and what you are trying to achieve
– TheGeneral
Dec 28 '18 at 6:01

This is one of the close reasons we have "Questions seeking debugging help ("why isn't this code working?") must include the desired behavior, a specific problem or error and the shortest code necessary to reproduce it in the question itself" Can you please edit this question so we can immediately understand what the problem is and what you are trying to achieve
– TheGeneral
Dec 28 '18 at 6:01

add a comment |

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