private Mat get_template(CascadeClassifier clssfr, Rect area, int size)
{
Mat template = new Mat();
Mat mROI = mGray.Submat(area);
MatOfRect eyes = new MatOfRect();
Point iris = new Point();
Rect eye_template = new Rect();
clssfr.DetectMultiScale(mROI, eyes, 1.15, 2, Objdetect.CascadeFindBiggestObject | Objdetect.CascadeScaleImage,
new Size(30, 30), new Size());
Rect[] eyesArray = eyes.ToArray();
for (int i = 0; i < eyesArray.Length;)
{
Rect e = eyesArray[i];
e.X = area.X + e.X;
e.Y = area.Y + e.Y;
Rect eye_only_rectangle = new Rect((int)e.Tl().X,
(int)(e.Tl().Y + e.Height * 0.4), (int)e.Width,
(int)(e.Height * 0.6));
mROI = mGray.Submat(eye_only_rectangle);
Mat vyrez = mRgba.Submat(eye_only_rectangle);
Core.MinMaxLocResult mmG = Core.MinMaxLoc(mROI);
Imgproc.Circle(vyrez, mmG.MinLoc, 2, new Scalar(255, 255, 255, 255), 2);
iris.X = mmG.MinLoc.X + eye_only_rectangle.X;
iris.Y = mmG.MinLoc.Y + eye_only_rectangle.Y;
eye_template = new Rect((int)iris.X - size / 2, (int)iris.Y - size / 2, size, size);
Imgproc.Rectangle(mRgba, eye_template.Tl(), eye_template.Br(), new Scalar(255, 0, 0, 255), 2);
template = (mGray.Submat(eye_template)).Clone();
return(template);
}
return(template);
}
public Mat OnCameraFrame(CameraBridgeViewBase.ICvCameraViewFrame inputFrame)
{
mRgba = inputFrame.Rgba();
mGray = inputFrame.Gray();
if (mAbsoluteFaceSize == 0)
{
int height = mGray.Rows();
if (Math.Round(height * mRelativeFaceSize) > 0)
{
mAbsoluteFaceSize = (int)Math.Round(height * mRelativeFaceSize);
}
}
if (mZoomWindow == null || mZoomWindow2 == null)
{
CreateAuxiliaryMats();
}
MatOfRect faces = new MatOfRect();
if (FACE != null)
{
FACE.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);
xCenter = (facesArray[i].X + facesArray[i].Width + facesArray[i].X) / 2;
yCenter = (facesArray[i].Y + facesArray[i].Y + facesArray[i].Height) / 2;
Point center = new Point(xCenter, yCenter);
Imgproc.Circle(mRgba, center, 10, new Scalar(255, 0, 0, 255), 3);
/* --- NOT NEEDED
* Imgproc.putText(mRgba, "[" + center.X + "," + center.Y + "]",
* new Point(center.X + 20, center.Y + 20),
* Core.FONT_HERSHEY_SIMPLEX, 0.7, new Scalar(255, 255, 255, 255));
*/
Rect r = facesArray[i];
// compute the eye area
Rect eyearea = new Rect(r.X + r.Width / 8,
(int)(r.Y + (r.Height / 4.5)), r.Width - 2 * r.Width / 8, (int)(r.Height / 3.0));
// split it
Rect eyearea_right = new Rect(r.X + r.Width / 16, (int)(r.Y + (r.Height / 4.5)),
(r.Width - 2 * r.Width / 16) / 2, (int)(r.Height / 3.0));
Rect eyearea_left = new Rect(r.X + r.Width / 16 + (r.Width - 2 * r.Width / 16) / 2,
(int)(r.Y + (r.Height / 4.5)), (r.Width - 2 * r.Width / 16) / 2, (int)(r.Height / 3.0));
// draw the area - mGray is working grayscale mat, if you want to see area in rgb preview,
// change mGray to mRgba
Imgproc.Rectangle(mRgba, eyearea_left.Tl(), eyearea_left.Br(), new Scalar(255, 0, 0, 255), 2);
Imgproc.Rectangle(mRgba, eyearea_right.Tl(), eyearea_right.Br(), new Scalar(255, 0, 0, 255), 2);
if (learn_frames < 5)
{
teplateR = get_template(EYE, eyearea_right, 24);
teplateL = get_template(EYE, eyearea_left, 24);
learn_frames++;
}
else
{
// Learning finished, use the new templates for template matching
match_eye(eyearea_right, teplateR, method);
match_eye(eyearea_left, teplateL, method);
}
// cut eye areas and put them to zoom windows
Imgproc.Resize(mRgba.Submat(eyearea_left), mZoomWindow2, mZoomWindow2.Size());
Imgproc.Resize(mRgba.Submat(eyearea_right), mZoomWindow, mZoomWindow.Size());
}
/*
* mRgba = inputFrame.Rgba();
* Log.Info(TAG, "called OnCameraFrame");
*
* if (mIsColorSelected)
* {
* mDetector.Process(mRgba);
* List<MatOfPoint> contours = mDetector.Contours;
* Log.Error(TAG, "Contours count: " + contours.Count);
* Imgproc.DrawContours(mRgba, contours, -1, CONTOUR_COLOR);
*
* 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);
}
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 (CameraViewActivity.viewMode)
{
case CameraViewActivity.VIEW_MODE_RGBA:
Point center = new Point(100, 200);
int radius = 100;
Scalar color = new Scalar(0, 255, 0);
// canvas, center, radius, color, linewidth
Imgproc.Circle(rgba, center, radius, color, 5);
center.X = 400;
center.Y = 700;
color.Val[0] = 255;
// canvas, string, left up, font id, size, color
Imgproc.PutText(rgba, "Surprise,\nmotherfucker!", center, 1, 4, color, 16);
break;
case CameraViewActivity.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 CameraViewActivity.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 CameraViewActivity.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 CameraViewActivity.VIEW_MODE_SEPIA:
rgbaInnerWindow = rgba.Submat(top, top + height, left, left + width);
Core.Transform(rgbaInnerWindow, rgbaInnerWindow, mSepiaKernel);
rgbaInnerWindow.Release();
break;
case CameraViewActivity.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 CameraViewActivity.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 CameraViewActivity.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);
}
