public Mat onCameraFrame(CvCameraViewFrame inputFrame) {
frame = inputFrame.rgba();
outputFrame = frame.clone();
if (homography != null) {
if (markerValue != -1 && markerValue != oldMarkerValue) {
oldMarkerValue = markerValue;
outputLogo = logo.clone();
Core.putText(
outputLogo,
Integer.toString(markerValue),
new Point(5, 505),
Core.FONT_HERSHEY_SIMPLEX,
5,
new Scalar(255, 0, 0),
5);
}
Imgproc.warpPerspective(
outputLogo,
outputFrame,
homography,
new Size(WIDTH, HEIGHT),
Imgproc.INTER_NEAREST,
Imgproc.BORDER_TRANSPARENT,
new Scalar(0));
}
return outputFrame;
}
public static Mat warp(Mat inputMat, Mat startM, int factor) {
int resultWidth = 400 * factor;
int resultHeight = 240 * factor;
Mat outputMat = new Mat(resultWidth, resultHeight, CvType.CV_8UC4);
Point ocvPOut1 = new Point(0, 0);
Point ocvPOut2 = new Point(0, resultHeight);
Point ocvPOut3 = new Point(resultWidth, resultHeight);
Point ocvPOut4 = new Point(resultWidth, 0);
List<Point> dest = new ArrayList<Point>();
dest.add(ocvPOut1);
dest.add(ocvPOut2);
dest.add(ocvPOut3);
dest.add(ocvPOut4);
Mat endM = Converters.vector_Point2f_to_Mat(dest);
Mat perspectiveTransform = Imgproc.getPerspectiveTransform(startM, endM);
Imgproc.warpPerspective(
inputMat,
outputMat,
perspectiveTransform,
new Size(resultWidth, resultHeight),
Imgproc.INTER_AREA);
Imgproc.GaussianBlur(outputMat, outputMat, new org.opencv.core.Size(5, 5), 5);
Imgproc.resize(outputMat, outputMat, new Size(resultWidth / factor, resultHeight / factor));
Imgproc.threshold(outputMat, outputMat, 127, 255, Imgproc.THRESH_TOZERO);
return outputMat;
}
private static Bitmap imgtrafo(
Bitmap image1,
Bitmap image2,
int p1_x,
int p1_y,
int p2_x,
int p2_y,
int p3_x,
int p3_y,
int p4_x,
int p4_y) {
// set output size same size as input
int resultWidth = image1.getWidth();
int resultHeight = image1.getHeight();
Mat inputMat = new Mat(image1.getWidth(), image1.getHeight(), CvType.CV_32FC1);
Utils.bitmapToMat(image1, inputMat);
Mat outputMat = new Mat(resultWidth, resultHeight, CvType.CV_32FC1);
Point ocvPIn1 = new Point(p1_x, p1_y);
Point ocvPIn2 = new Point(p2_x, p2_y);
Point ocvPIn3 = new Point(p3_x, p3_y);
Point ocvPIn4 = new Point(p4_x, p4_y);
List<Point> source = new ArrayList<Point>();
source.add(ocvPIn1);
source.add(ocvPIn2);
source.add(ocvPIn3);
source.add(ocvPIn4);
Mat inputQuad = Converters.vector_Point2f_to_Mat(source);
Point ocvPOut1 = new Point(256, 40); // manually set
Point ocvPOut2 = new Point(522, 62);
Point ocvPOut3 = new Point(455, 479);
Point ocvPOut4 = new Point(134, 404);
List<Point> dest = new ArrayList<Point>();
dest.add(ocvPOut1);
dest.add(ocvPOut2);
dest.add(ocvPOut3);
dest.add(ocvPOut4);
Mat outputQuad = Converters.vector_Point2f_to_Mat(dest);
Mat perspectiveTransform = Imgproc.getPerspectiveTransform(inputQuad, outputQuad);
Imgproc.warpPerspective(
inputMat, outputMat, perspectiveTransform, new Size(resultWidth, resultHeight)); // ?
Bitmap output = Bitmap.createBitmap(resultWidth, resultHeight, Bitmap.Config.RGB_565);
Utils.matToBitmap(outputMat, output);
return output;
}
public void processFrame(CameraEvents.Frame frameEvent) {
if (service.getActivityMode() != ActivityEvent.Mode.WARP) return;
if (mode == Mode.SAMPLEWARPPLANE || mode == Mode.SAMPLEWARPGLASS) {
synchronized (this) {
if (!isSetup) setupMatrices();
if (captureSample) {
captureSample = false;
Log.d(TAG, "Warp: Capturing Sample");
Mat frame = frameEvent.getCameraFrame().getRGB();
byte[] frameJPEG = frameEvent.getCameraFrame().getJPEG();
if (sampleBGR == null
|| sampleBGR.height() != frame.height()
|| sampleBGR.width() != frame.width())
sampleBGR = new Mat(frame.rows(), frame.cols(), CvType.CV_8UC3);
Imgproc.cvtColor(frame, sampleBGR, Imgproc.COLOR_RGB2BGR);
useSample = true;
// TODO: Specialize it for this group/device
com.dappervision.wearscript.Utils.eventBusPost(
new SendEvent("warpsample", "", ValueFactory.createRawValue(frameJPEG)));
}
}
}
if (busy) return;
synchronized (this) {
busy = true;
if (!isSetup) setupMatrices();
if (mode == Mode.CAM2GLASS) {
Mat inputBGR;
Mat frame = frameEvent.getCameraFrame().getRGB();
if (frameBGR == null
|| frameBGR.height() != frame.height()
|| frameBGR.width() != frame.width())
frameBGR = new Mat(frame.rows(), frame.cols(), CvType.CV_8UC3);
Mat hSmallToGlassMat = getHSmallToGlassMat(frame.rows(), frame.cols());
if (hSmallToGlassMat == null) {
Log.w(TAG, "Warp: Bad size");
busy = false;
return;
}
Imgproc.cvtColor(frame, frameBGR, Imgproc.COLOR_RGB2BGR);
inputBGR = frameBGR;
Imgproc.warpPerspective(
inputBGR, frameWarp, hSmallToGlassMat, new Size(frameWarp.width(), frameWarp.height()));
drawFrame(frameWarp);
}
busy = false;
}
}
public void onEventAsync(WarpHEvent event) {
double[] h = event.getH();
synchronized (this) {
if ((mode == Mode.SAMPLEWARPPLANE || mode == Mode.SAMPLEWARPGLASS) && useSample) {
if (!isSetup) setupMatrices();
double hSmallToGlass[] = getHSmallToGlass(sampleBGR.height(), sampleBGR.width());
if (hSmallToGlass == null) {
Log.w(TAG, "Warp: Bad size");
return;
}
Log.d(TAG, "Warp: WarpHEvent");
if (mode == Mode.SAMPLEWARPGLASS) {
h = HMult(hSmallToGlass, h);
}
Mat hMat = HMatFromArray(h);
Imgproc.warpPerspective(
sampleBGR, frameWarp, hMat, new Size(frameWarp.width(), frameWarp.height()));
drawFrame(frameWarp);
}
}
}
