public void OnCameraViewStarted(int width, int height)
        {
            mIntermediateMat = new Mat();
            mSize0           = new Size();
            mChannels        = new MatOfInt[] { new MatOfInt(0), new MatOfInt(1), new MatOfInt(2) };
            mBuff            = new float[mHistSizeNum];
            mHistSize        = new MatOfInt(mHistSizeNum);
            mRanges          = new MatOfFloat(0f, 256f);
            mMat0            = new Mat();
            mColorsRGB       = new Scalar[] { new Scalar(200, 0, 0, 255), new Scalar(0, 200, 0, 255), new Scalar(0, 0, 200, 255) };
            mColorsHue       = new Scalar[] {
                new Scalar(255, 0, 0, 255), new Scalar(255, 60, 0, 255), new Scalar(255, 120, 0, 255), new Scalar(255, 180, 0, 255), new Scalar(255, 240, 0, 255),
                new Scalar(215, 213, 0, 255), new Scalar(150, 255, 0, 255), new Scalar(85, 255, 0, 255), new Scalar(20, 255, 0, 255), new Scalar(0, 255, 30, 255),
                new Scalar(0, 255, 85, 255), new Scalar(0, 255, 150, 255), new Scalar(0, 255, 215, 255), new Scalar(0, 234, 255, 255), new Scalar(0, 170, 255, 255),
                new Scalar(0, 120, 255, 255), new Scalar(0, 60, 255, 255), new Scalar(0, 0, 255, 255), new Scalar(64, 0, 255, 255), new Scalar(120, 0, 255, 255),
                new Scalar(180, 0, 255, 255), new Scalar(255, 0, 255, 255), new Scalar(255, 0, 215, 255), new Scalar(255, 0, 85, 255), new Scalar(255, 0, 0, 255)
            };
            mWhilte = Scalar.All(255);
            mP1     = new Point();
            mP2     = new Point();

            // Fill sepia kernel
            mSepiaKernel = new Mat(4, 4, CvType.Cv32f);
            mSepiaKernel.Put(0, 0, /* R */ 0.189f, 0.769f, 0.393f, 0f);
            mSepiaKernel.Put(1, 0, /* G */ 0.168f, 0.686f, 0.349f, 0f);
            mSepiaKernel.Put(2, 0, /* B */ 0.131f, 0.534f, 0.272f, 0f);
            mSepiaKernel.Put(3, 0, /* A */ 0.000f, 0.000f, 0.000f, 1f);
        }
Esempio n. 2
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 public void OnCameraViewStarted(int width, int height)
 {
     mRgba          = new Mat(height, width, CvType.Cv8uc4);
     mDetector      = new ColorBlobDetector();
     mSpectrum      = new Mat();
     mBlobColorRgba = new Scalar(255);
     mBlobColorHsv  = new Scalar(255);
     SPECTRUM_SIZE  = new Size(200, 64);
     CONTOUR_COLOR  = new Scalar(255, 0, 0, 255);
 }
 public CameraCalibrator(int width, int height)
 {
     mImageSize = new Size(width, height);
     mFlags     = Calib3d.CalibFixPrincipalPoint +
                  Calib3d.CalibZeroTangentDist +
                  Calib3d.CalibFixAspectRatio +
                  Calib3d.CalibFixK4 +
                  Calib3d.CalibFixK5;
     Mat.Eye(3, 3, CvType.Cv64fc1).CopyTo(mCameraMatrix);
     mCameraMatrix.Put(0, 0, 1.0);
     Mat.Zeros(5, 1, CvType.Cv64fc1).CopyTo(mDistortionCoefficients);
     Log.Info(TAG, "Instantiated new " + GetType().ToString());
     mCornersSize = (int)(mPatternSize.Width * mPatternSize.Height);
 }
        public Mat OnCameraFrame(CameraBridgeViewBase.ICvCameraViewFrame inputFrame)
        {
            Mat  rgba     = inputFrame.Rgba();
            Size sizeRgba = rgba.Size();

            Mat rgbaInnerWindow;

            int rows = (int)sizeRgba.Height;
            int cols = (int)sizeRgba.Width;

            int left = cols / 8;
            int top  = rows / 8;

            int width  = cols * 3 / 4;
            int height = rows * 3 / 4;

            switch (ImageManipulationsActivity.viewMode)
            {
            case ImageManipulationsActivity.VIEW_MODE_RGBA:
                break;

            case ImageManipulationsActivity.VIEW_MODE_HIST:
                Mat hist     = new Mat();
                int thikness = (int)(sizeRgba.Width / (mHistSizeNum + 10) / 5);
                if (thikness > 5)
                {
                    thikness = 5;
                }
                int offset = (int)((sizeRgba.Width - (5 * mHistSizeNum + 4 * 10) * thikness) / 2);
                // RGB
                for (int c = 0; c < 3; c++)
                {
                    Imgproc.CalcHist(Arrays.AsList(rgba).Cast <Mat>().ToList(), mChannels[c], mMat0, hist, mHistSize, mRanges);
                    Core.Normalize(hist, hist, sizeRgba.Height / 2, 0, Core.NormInf);
                    hist.Get(0, 0, mBuff);
                    for (int h = 0; h < mHistSizeNum; h++)
                    {
                        mP1.X = mP2.X = offset + (c * (mHistSizeNum + 10) + h) * thikness;
                        mP1.Y = sizeRgba.Height - 1;
                        mP2.Y = mP1.Y - 2 - (int)mBuff[h];
                        Imgproc.Line(rgba, mP1, mP2, mColorsRGB[c], thikness);
                    }
                }
                // Value and Hue
                Imgproc.CvtColor(rgba, mIntermediateMat, Imgproc.ColorRgb2hsvFull);
                // Value
                Imgproc.CalcHist(Arrays.AsList(mIntermediateMat).Cast <Mat>().ToList(), mChannels[2], mMat0, hist, mHistSize, mRanges);
                Core.Normalize(hist, hist, sizeRgba.Height / 2, 0, Core.NormInf);
                hist.Get(0, 0, mBuff);
                for (int h = 0; h < mHistSizeNum; h++)
                {
                    mP1.X = mP2.X = offset + (3 * (mHistSizeNum + 10) + h) * thikness;
                    mP1.Y = sizeRgba.Height - 1;
                    mP2.Y = mP1.Y - 2 - (int)mBuff[h];
                    Imgproc.Line(rgba, mP1, mP2, mWhilte, thikness);
                }
                // Hue
                Imgproc.CalcHist(Arrays.AsList(mIntermediateMat).Cast <Mat>().ToList(), mChannels[0], mMat0, hist, mHistSize, mRanges);
                Core.Normalize(hist, hist, sizeRgba.Height / 2, 0, Core.NormInf);
                hist.Get(0, 0, mBuff);
                for (int h = 0; h < mHistSizeNum; h++)
                {
                    mP1.X = mP2.X = offset + (4 * (mHistSizeNum + 10) + h) * thikness;
                    mP1.Y = sizeRgba.Height - 1;
                    mP2.Y = mP1.Y - 2 - (int)mBuff[h];
                    Imgproc.Line(rgba, mP1, mP2, mColorsHue[h], thikness);
                }
                break;

            case ImageManipulationsActivity.VIEW_MODE_CANNY:
                rgbaInnerWindow = rgba.Submat(top, top + height, left, left + width);
                Imgproc.Canny(rgbaInnerWindow, mIntermediateMat, 80, 90);
                Imgproc.CvtColor(mIntermediateMat, rgbaInnerWindow, Imgproc.ColorGray2bgra, 4);
                rgbaInnerWindow.Release();
                break;

            case ImageManipulationsActivity.VIEW_MODE_SOBEL:
                Mat gray            = inputFrame.Gray();
                Mat grayInnerWindow = gray.Submat(top, top + height, left, left + width);
                rgbaInnerWindow = rgba.Submat(top, top + height, left, left + width);
                Imgproc.Sobel(grayInnerWindow, mIntermediateMat, CvType.Cv8u, 1, 1);
                Core.ConvertScaleAbs(mIntermediateMat, mIntermediateMat, 10, 0);
                Imgproc.CvtColor(mIntermediateMat, rgbaInnerWindow, Imgproc.ColorGray2bgra, 4);
                grayInnerWindow.Release();
                rgbaInnerWindow.Release();
                break;

            case ImageManipulationsActivity.VIEW_MODE_SEPIA:
                rgbaInnerWindow = rgba.Submat(top, top + height, left, left + width);
                Core.Transform(rgbaInnerWindow, rgbaInnerWindow, mSepiaKernel);
                rgbaInnerWindow.Release();
                break;

            case ImageManipulationsActivity.VIEW_MODE_ZOOM:
                Mat zoomCorner  = rgba.Submat(0, rows / 2 - rows / 10, 0, cols / 2 - cols / 10);
                Mat mZoomWindow = rgba.Submat(rows / 2 - 9 * rows / 100, rows / 2 + 9 * rows / 100, cols / 2 - 9 * cols / 100, cols / 2 + 9 * cols / 100);
                Imgproc.Resize(mZoomWindow, zoomCorner, zoomCorner.Size());
                Size wsize = mZoomWindow.Size();
                Imgproc.Rectangle(mZoomWindow, new Point(1, 1), new Point(wsize.Width - 2, wsize.Height - 2), new Scalar(255, 0, 0, 255), 2);
                zoomCorner.Release();
                mZoomWindow.Release();
                break;

            case ImageManipulationsActivity.VIEW_MODE_PIXELIZE:
                rgbaInnerWindow = rgba.Submat(top, top + height, left, left + width);
                Imgproc.Resize(rgbaInnerWindow, mIntermediateMat, mSize0, 0.1, 0.1, Imgproc.InterNearest);
                Imgproc.Resize(mIntermediateMat, rgbaInnerWindow, rgbaInnerWindow.Size(), 0.0, 0.0, Imgproc.InterNearest);
                rgbaInnerWindow.Release();
                break;

            case ImageManipulationsActivity.VIEW_MODE_POSTERIZE:
                /*
                 * Imgproc.cvtColor(rgbaInnerWindow, mIntermediateMat, Imgproc.COLOR_RGBA2RGB);
                 * Imgproc.pyrMeanShiftFiltering(mIntermediateMat, mIntermediateMat, 5, 50);
                 * Imgproc.cvtColor(mIntermediateMat, rgbaInnerWindow, Imgproc.COLOR_RGB2RGBA);
                 */
                rgbaInnerWindow = rgba.Submat(top, top + height, left, left + width);
                Imgproc.Canny(rgbaInnerWindow, mIntermediateMat, 80, 90);
                rgbaInnerWindow.SetTo(new Scalar(0, 0, 0, 255), mIntermediateMat);
                Core.ConvertScaleAbs(rgbaInnerWindow, mIntermediateMat, 1.0 / 16, 0);
                Core.ConvertScaleAbs(mIntermediateMat, rgbaInnerWindow, 16, 0);
                rgbaInnerWindow.Release();
                break;
            }

            return(rgba);
        }