Alexander Smorkalov
13 years ago
committed by
Andrey Kamaev
parent
2fd8b51a26
commit
c64ee44c9e
4 changed files with 150 additions and 323 deletions
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<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" |
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xmlns:tools="http://schemas.android.com/tools" |
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android:layout_width="match_parent" |
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android:layout_height="match_parent" > |
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<org.opencv.framework.OpenCvJavaCameraView |
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android:layout_width="fill_parent" |
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android:layout_height="fill_parent" |
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android:id="@+id/color_blob_detection_activity_surface_view" /> |
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</LinearLayout> |
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@ -1,151 +0,0 @@ |
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package org.opencv.samples.colorblobdetect; |
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import java.util.List; |
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import org.opencv.android.Utils; |
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import org.opencv.core.Core; |
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import org.opencv.core.CvType; |
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import org.opencv.core.Mat; |
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import org.opencv.core.MatOfPoint; |
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import org.opencv.core.Rect; |
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import org.opencv.core.Scalar; |
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import org.opencv.core.Size; |
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import org.opencv.highgui.Highgui; |
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import org.opencv.highgui.VideoCapture; |
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import org.opencv.imgproc.Imgproc; |
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import android.content.Context; |
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import android.graphics.Bitmap; |
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import android.util.Log; |
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import android.view.MotionEvent; |
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import android.view.SurfaceHolder; |
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import android.view.View; |
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import android.view.View.OnTouchListener; |
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public class ColorBlobDetectionView extends SampleCvViewBase implements OnTouchListener { |
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private static final String TAG = "OCVSample::View"; |
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private Mat mRgba; |
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private boolean mIsColorSelected = false; |
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private Scalar mBlobColorRgba = new Scalar(255); |
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private Scalar mBlobColorHsv = new Scalar(255); |
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private ColorBlobDetector mDetector = new ColorBlobDetector(); |
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private Mat mSpectrum = new Mat(); |
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private static Size SPECTRUM_SIZE = new Size(200, 32); |
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private static final Scalar CONTOUR_COLOR = new Scalar(255,0,0,255); |
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public ColorBlobDetectionView(Context context) { |
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super(context); |
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setOnTouchListener(this); |
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Log.i(TAG, "Instantiated new " + this.getClass()); |
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} |
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@Override |
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public void surfaceCreated(SurfaceHolder holder) { |
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Log.i(TAG, "called surfaceCreated"); |
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synchronized (this) { |
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// initialize Mat before usage
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mRgba = new Mat(); |
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} |
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super.surfaceCreated(holder); |
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} |
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private Scalar converScalarHsv2Rgba(Scalar hsvColor) { |
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Mat pointMatRgba = new Mat(); |
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Mat pointMatHsv = new Mat(1, 1, CvType.CV_8UC3, hsvColor); |
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Imgproc.cvtColor(pointMatHsv, pointMatRgba, Imgproc.COLOR_HSV2RGB_FULL, 4); |
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return new Scalar(pointMatRgba.get(0, 0)); |
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} |
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public boolean onTouch(View v, MotionEvent event) { |
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int cols = mRgba.cols(); |
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int rows = mRgba.rows(); |
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int xOffset = (getWidth() - cols) / 2; |
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int yOffset = (getHeight() - rows) / 2; |
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int x = (int)event.getX() - xOffset; |
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int y = (int)event.getY() - yOffset; |
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Log.i(TAG, "Touch image coordinates: (" + x + ", " + y + ")"); |
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if ((x < 0) || (y < 0) || (x > cols) || (y > rows)) return false; |
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Rect touchedRect = new Rect(); |
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touchedRect.x = (x>4) ? x-4 : 0; |
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touchedRect.y = (y>4) ? y-4 : 0; |
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touchedRect.width = (x+4 < cols) ? x + 4 - touchedRect.x : cols - touchedRect.x; |
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touchedRect.height = (y+4 < rows) ? y + 4 - touchedRect.y : rows - touchedRect.y; |
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Mat touchedRegionRgba = mRgba.submat(touchedRect); |
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Mat touchedRegionHsv = new Mat(); |
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Imgproc.cvtColor(touchedRegionRgba, touchedRegionHsv, Imgproc.COLOR_RGB2HSV_FULL); |
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// Calculate average color of touched region
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mBlobColorHsv = Core.sumElems(touchedRegionHsv); |
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int pointCount = touchedRect.width*touchedRect.height; |
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for (int i = 0; i < mBlobColorHsv.val.length; i++) |
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mBlobColorHsv.val[i] /= pointCount; |
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mBlobColorRgba = converScalarHsv2Rgba(mBlobColorHsv); |
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Log.i(TAG, "Touched rgba color: (" + mBlobColorRgba.val[0] + ", " + mBlobColorRgba.val[1] + |
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", " + mBlobColorRgba.val[2] + ", " + mBlobColorRgba.val[3] + ")"); |
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mDetector.setHsvColor(mBlobColorHsv); |
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Imgproc.resize(mDetector.getSpectrum(), mSpectrum, SPECTRUM_SIZE); |
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mIsColorSelected = true; |
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return false; // don't need subsequent touch events
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} |
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@Override |
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protected Bitmap processFrame(VideoCapture capture) { |
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capture.retrieve(mRgba, Highgui.CV_CAP_ANDROID_COLOR_FRAME_RGBA); |
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Bitmap bmp = Bitmap.createBitmap(mRgba.cols(), mRgba.rows(), Bitmap.Config.ARGB_8888); |
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if (mIsColorSelected) { |
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mDetector.process(mRgba); |
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List<MatOfPoint> contours = mDetector.getContours(); |
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Log.e(TAG, "Contours count: " + contours.size()); |
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Imgproc.drawContours(mRgba, contours, -1, CONTOUR_COLOR); |
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Mat colorLabel = mRgba.submat(2, 34, 2, 34); |
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colorLabel.setTo(mBlobColorRgba); |
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Mat spectrumLabel = mRgba.submat(2, 2 + mSpectrum.rows(), 38, 38 + mSpectrum.cols()); |
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mSpectrum.copyTo(spectrumLabel); |
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} |
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try { |
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Utils.matToBitmap(mRgba, bmp); |
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} catch(Exception e) { |
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Log.e(TAG, "Utils.matToBitmap() throws an exception: " + e.getMessage()); |
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bmp.recycle(); |
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bmp = null; |
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} |
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return bmp; |
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} |
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@Override |
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public void run() { |
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super.run(); |
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synchronized (this) { |
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// Explicitly deallocate Mats
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if (mRgba != null) |
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mRgba.release(); |
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mRgba = null; |
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} |
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} |
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} |
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@ -1,117 +0,0 @@ |
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package org.opencv.samples.colorblobdetect; |
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import java.util.List; |
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import org.opencv.core.Size; |
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import org.opencv.highgui.VideoCapture; |
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import org.opencv.highgui.Highgui; |
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import android.content.Context; |
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import android.graphics.Bitmap; |
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import android.graphics.Canvas; |
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import android.util.Log; |
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import android.view.SurfaceHolder; |
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import android.view.SurfaceView; |
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public abstract class SampleCvViewBase extends SurfaceView implements SurfaceHolder.Callback, Runnable { |
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private static final String TAG = "OCVSample::BaseView"; |
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private SurfaceHolder mHolder; |
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private VideoCapture mCamera; |
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public SampleCvViewBase(Context context) { |
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super(context); |
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mHolder = getHolder(); |
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mHolder.addCallback(this); |
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Log.i(TAG, "Instantiated new " + this.getClass()); |
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} |
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public synchronized boolean openCamera() { |
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Log.i(TAG, "Opening Camera"); |
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mCamera = new VideoCapture(Highgui.CV_CAP_ANDROID); |
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if (!mCamera.isOpened()) { |
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releaseCamera(); |
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Log.e(TAG, "Can't open native camera"); |
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return false; |
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} |
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return true; |
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} |
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public synchronized void releaseCamera() { |
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Log.i(TAG, "Releasing Camera"); |
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if (mCamera != null) { |
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mCamera.release(); |
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mCamera = null; |
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} |
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} |
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public synchronized void setupCamera(int width, int height) { |
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if (mCamera != null && mCamera.isOpened()) { |
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Log.i(TAG, "Setup Camera - " + width + "x" + height); |
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List<Size> sizes = mCamera.getSupportedPreviewSizes(); |
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int mFrameWidth = width; |
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int mFrameHeight = height; |
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// selecting optimal camera preview size
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{ |
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double minDiff = Double.MAX_VALUE; |
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for (Size size : sizes) { |
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if (Math.abs(size.height - height) < minDiff) { |
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mFrameWidth = (int) size.width; |
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mFrameHeight = (int) size.height; |
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minDiff = Math.abs(size.height - height); |
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} |
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} |
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} |
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mCamera.set(Highgui.CV_CAP_PROP_FRAME_WIDTH, mFrameWidth); |
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mCamera.set(Highgui.CV_CAP_PROP_FRAME_HEIGHT, mFrameHeight); |
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} |
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} |
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public void surfaceChanged(SurfaceHolder _holder, int format, int width, int height) { |
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Log.i(TAG, "called surfaceChanged"); |
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setupCamera(width, height); |
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} |
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public void surfaceCreated(SurfaceHolder holder) { |
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Log.i(TAG, "called surfaceCreated"); |
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(new Thread(this)).start(); |
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} |
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public void surfaceDestroyed(SurfaceHolder holder) { |
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Log.i(TAG, "called surfaceDestroyed"); |
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} |
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protected abstract Bitmap processFrame(VideoCapture capture); |
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public void run() { |
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Log.i(TAG, "Started processing thread"); |
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while (true) { |
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Bitmap bmp = null; |
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synchronized (this) { |
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if (mCamera == null) |
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break; |
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if (!mCamera.grab()) { |
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Log.e(TAG, "mCamera.grab() failed"); |
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break; |
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} |
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bmp = processFrame(mCamera); |
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} |
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if (bmp != null) { |
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Canvas canvas = mHolder.lockCanvas(); |
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if (canvas != null) { |
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canvas.drawColor(0, android.graphics.PorterDuff.Mode.CLEAR); |
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canvas.drawBitmap(bmp, (canvas.getWidth() - bmp.getWidth()) / 2, (canvas.getHeight() - bmp.getHeight()) / 2, null); |
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mHolder.unlockCanvasAndPost(canvas); |
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} |
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bmp.recycle(); |
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} |
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} |
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Log.i(TAG, "Finished processing thread"); |
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} |
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} |
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