Java Code Examples for org.opencv.android.Utils#matToBitmap()
The following examples show how to use
org.opencv.android.Utils#matToBitmap() .
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Example 1
| Source File: MainActivity.java From MOAAP with MIT License | 7 votes |
|
public void DifferenceOfGaussian() {
Mat grayMat = new Mat();
Mat blur1 = new Mat();
Mat blur2 = new Mat();
//Converting the image to grayscale
Imgproc.cvtColor(originalMat, grayMat, Imgproc.COLOR_BGR2GRAY);
Imgproc.GaussianBlur(grayMat, blur1, new Size(15, 15), 5);
Imgproc.GaussianBlur(grayMat, blur2, new Size(21, 21), 5);
//Subtracting the two blurred images
Mat DoG = new Mat();
Core.absdiff(blur1, blur2, DoG);
//Inverse Binary Thresholding
Core.multiply(DoG, new Scalar(100), DoG);
Imgproc.threshold(DoG, DoG, 50, 255, Imgproc.THRESH_BINARY_INV);
//Converting Mat back to Bitmap
Utils.matToBitmap(DoG, currentBitmap);
imageView.setImageBitmap(currentBitmap);
}
Example 2
| Source File: TensorFlow.java From Android-Face-Recognition-with-Deep-Learning-Library with Apache License 2.0 | 6 votes |
|
private float[] getPixels(Mat img){
Bitmap bmp = Bitmap.createBitmap(inputSize, inputSize, Bitmap.Config.ARGB_8888);
Utils.matToBitmap(img, bmp);
int[] intValues = new int[inputSize * inputSize];
bmp.getPixels(intValues, 0, inputSize, 0, 0, inputSize, inputSize);
float[] floatValues = new float[inputSize * inputSize * channels];
for (int i = 0; i < intValues.length; ++i) {
final int val = intValues[i];
floatValues[i * 3 + 0] = (((float)((val >> 16) & 0xFF)) - imageMean) / imageStd;
floatValues[i * 3 + 1] = (((float)((val >> 8) & 0xFF)) - imageMean) / imageStd;
floatValues[i * 3 + 2] = (((float)(val & 0xFF)) - imageMean) / imageStd;
}
return floatValues;
}
Example 3
| Source File: ProcessHelper.java From OpenCV-android with Apache License 2.0 | 6 votes |
|
/**
* 角点检测
*
* @param origin 原始bitmap
* @param callback 回调
*/
public void harris(Bitmap origin, ProcessCallback callback) {
if (origin == null) {
return;
}
try {
Bitmap bitmap = Bitmap.createBitmap(origin.getWidth(), origin.getHeight(), Bitmap.Config.RGB_565);
Utils.bitmapToMat(origin, rgbMat);
Imgproc.cvtColor(rgbMat, grayMat, Imgproc.COLOR_RGB2GRAY);
Mat corners = new Mat();
Mat tempDst = new Mat();
Mat tempDstNorm = new Mat();
// 找出角点
Imgproc.cornerHarris(grayMat, tempDst, 2, 3, 0.04);
// 归一化Harris角点的输出
Core.normalize(tempDst, tempDstNorm, 0, 255, Core.NORM_MINMAX);
Core.convertScaleAbs(tempDstNorm, corners);
// 绘制角点
Random random = new Random();
for (int i = 0; i < tempDstNorm.cols(); i++) {
for (int j = 0; j < tempDstNorm.rows(); j++) {
double[] value = tempDstNorm.get(j, i);
if (value[0] > 250) {
// 决定了画出哪些角点，值越大选择画出的点就越少
Imgproc.circle(corners, new Point(i, j), 5, new Scalar(random.nextInt(255)), 2);
}
}
}
Utils.matToBitmap(corners, bitmap);
callback.onSuccess(bitmap);
} catch (Exception e) {
callback.onFailed(e.getMessage());
}
}
Example 4
| Source File: FaceRecognitionActivity.java From AndroidFaceRecognizer with MIT License | 6 votes |
|
private void onFaceCaptured(Mat faceMat){
capturingImage = false;
final boolean willRecognizeButtonAppear = capturedMat == null;
capturedMat = faceMat;
final Bitmap bmp = Bitmap.createBitmap(faceMat.cols(), faceMat.rows(), Bitmap.Config.RGB_565);
Utils.matToBitmap(faceMat, bmp);
FaceRecognitionActivity.this.runOnUiThread(new Runnable() {
@Override
public void run() {
capturedImage.setImageBitmap(bmp);
captureButton.setBackgroundResource(R.drawable.capturestart);
captureButton.setText("Start Capturing");
if(willRecognizeButtonAppear) {
bringRecognizeButtonAnimatedly();
}
}
});
}
Example 5
| Source File: MainActivity.java From MOAAP with MIT License | 5 votes |
|
void HarrisCorner() {
Mat grayMat = new Mat();
Mat corners = new Mat();
//Converting the image to grayscale
Imgproc.cvtColor(originalMat, grayMat, Imgproc.COLOR_BGR2GRAY);
Mat tempDst = new Mat();
//finding contours
Imgproc.cornerHarris(grayMat, tempDst, 2, 3, 0.04);
//Normalizing harris corner's output
Mat tempDstNorm = new Mat();
Core.normalize(tempDst, tempDstNorm, 0, 255, Core.NORM_MINMAX);
Core.convertScaleAbs(tempDstNorm, corners);
//Drawing corners on a new image
Random r = new Random();
for (int i = 0; i < tempDstNorm.cols(); i++) {
for (int j = 0; j < tempDstNorm.rows(); j++) {
double[] value = tempDstNorm.get(j, i);
if (value[0] > 150)
Imgproc.circle(corners, new Point(i, j), 5, new Scalar(r.nextInt(255)), 2);
}
}
//Converting Mat back to Bitmap
Utils.matToBitmap(corners, currentBitmap);
imageView.setImageBitmap(currentBitmap);
}
Example 6
| Source File: MainActivity.java From MOAAP with MIT License | 5 votes |
|
void HoughCircles() {
Mat grayMat = new Mat();
Mat cannyEdges = new Mat();
Mat circles = new Mat();
//Converting the image to grayscale
Imgproc.cvtColor(originalMat, grayMat, Imgproc.COLOR_BGR2GRAY);
Imgproc.Canny(grayMat, cannyEdges, 10, 100);
Imgproc.HoughCircles(cannyEdges, circles, Imgproc.CV_HOUGH_GRADIENT, 1, cannyEdges.rows() / 15);//, grayMat.rows() / 8);
Mat houghCircles = new Mat();
houghCircles.create(cannyEdges.rows(), cannyEdges.cols(), CvType.CV_8UC1);
//Drawing lines on the image
for (int i = 0; i < circles.cols(); i++) {
double[] parameters = circles.get(0, i);
double x, y;
int r;
x = parameters[0];
y = parameters[1];
r = (int) parameters[2];
Point center = new Point(x, y);
//Drawing circles on an image
Imgproc.circle(houghCircles, center, r, new Scalar(255, 0, 0), 1);
}
//Converting Mat back to Bitmap
Utils.matToBitmap(houghCircles, currentBitmap);
imageView.setImageBitmap(currentBitmap);
}
Example 7
| Source File: MainActivity.java From MOAAP with MIT License | 5 votes |
|
void HoughLines() {
Mat grayMat = new Mat();
Mat cannyEdges = new Mat();
Mat lines = new Mat();
//Converting the image to grayscale
Imgproc.cvtColor(originalMat, grayMat, Imgproc.COLOR_BGR2GRAY);
Imgproc.Canny(grayMat, cannyEdges, 10, 100);
Imgproc.HoughLinesP(cannyEdges, lines, 1, Math.PI / 180, 50, 20, 20);
Mat houghLines = new Mat();
houghLines.create(cannyEdges.rows(), cannyEdges.cols(), CvType.CV_8UC1);
//Drawing lines on the image
for (int i = 0; i < lines.cols(); i++) {
double[] points = lines.get(0, i);
double x1, y1, x2, y2;
x1 = points[0];
y1 = points[1];
x2 = points[2];
y2 = points[3];
Point pt1 = new Point(x1, y1);
Point pt2 = new Point(x2, y2);
//Drawing lines on an image
Imgproc.line(houghLines, pt1, pt2, new Scalar(255, 0, 0), 1);
}
//Converting Mat back to Bitmap
Utils.matToBitmap(houghLines, currentBitmap);
imageView.setImageBitmap(currentBitmap);
}
Example 8
| Source File: ProcessHelper.java From OpenCV-android with Apache License 2.0 | 5 votes |
|
/**
* 灰度处理
*
* @param origin 原始bitmap
* @param callback 回调
*/
public void gray(Bitmap origin, ProcessCallback callback) {
if (origin == null) {
return;
}
try {
Bitmap bitmap = Bitmap.createBitmap(origin.getWidth(), origin.getHeight(), Bitmap.Config.RGB_565);
Utils.bitmapToMat(origin, rgbMat);
Imgproc.cvtColor(rgbMat, grayMat, Imgproc.COLOR_RGB2GRAY);
Utils.matToBitmap(grayMat, bitmap);
callback.onSuccess(bitmap);
} catch (Exception e) {
callback.onFailed(e.getMessage());
}
}
Example 9
| Source File: MainActivity.java From MOAAP with MIT License | 5 votes |
|
void Canny() {
Mat grayMat = new Mat();
Mat cannyEdges = new Mat();
//Converting the image to grayscale
Imgproc.cvtColor(originalMat, grayMat, Imgproc.COLOR_BGR2GRAY);
Imgproc.Canny(grayMat, cannyEdges, 10, 100);
//Converting Mat back to Bitmap
Utils.matToBitmap(cannyEdges, currentBitmap);
imageView.setImageBitmap(currentBitmap);
}
Example 10
| Source File: CameraBridgeViewBase.java From effective_android_sample with Apache License 2.0 | 4 votes |
|
/**
* This method shall be called by the subclasses when they have valid
* object and want it to be delivered to external client (via callback) and
* then displayed on the screen.
* @param frame - the current frame to be delivered
*/
protected void deliverAndDrawFrame(CvCameraViewFrame frame) {
Mat modified;
if (mListener != null) {
modified = mListener.onCameraFrame(frame);
} else {
modified = frame.rgba();
}
boolean bmpValid = true;
if (modified != null) {
try {
Utils.matToBitmap(modified, mCacheBitmap);
} catch(Exception e) {
Log.e(TAG, "Mat type: " + modified);
Log.e(TAG, "Bitmap type: " + mCacheBitmap.getWidth() + "*" + mCacheBitmap.getHeight());
Log.e(TAG, "Utils.matToBitmap() throws an exception: " + e.getMessage());
bmpValid = false;
}
}
if (bmpValid && mCacheBitmap != null) {
Canvas canvas = getHolder().lockCanvas();
if (canvas != null) {
canvas.drawColor(0, android.graphics.PorterDuff.Mode.CLEAR);
Log.d(TAG, "mStretch value: " + mScale);
if (mScale != 0) {
canvas.drawBitmap(mCacheBitmap, new Rect(0,0,mCacheBitmap.getWidth(), mCacheBitmap.getHeight()),
new Rect((int)((canvas.getWidth() - mScale*mCacheBitmap.getWidth()) / 2),
(int)((canvas.getHeight() - mScale*mCacheBitmap.getHeight()) / 2),
(int)((canvas.getWidth() - mScale*mCacheBitmap.getWidth()) / 2 + mScale*mCacheBitmap.getWidth()),
(int)((canvas.getHeight() - mScale*mCacheBitmap.getHeight()) / 2 + mScale*mCacheBitmap.getHeight())), null);
} else {
canvas.drawBitmap(mCacheBitmap, new Rect(0,0,mCacheBitmap.getWidth(), mCacheBitmap.getHeight()),
new Rect((canvas.getWidth() - mCacheBitmap.getWidth()) / 2,
(canvas.getHeight() - mCacheBitmap.getHeight()) / 2,
(canvas.getWidth() - mCacheBitmap.getWidth()) / 2 + mCacheBitmap.getWidth(),
(canvas.getHeight() - mCacheBitmap.getHeight()) / 2 + mCacheBitmap.getHeight()), null);
}
if (mFpsMeter != null) {
mFpsMeter.measure();
mFpsMeter.draw(canvas, 20, 30);
}
getHolder().unlockCanvasAndPost(canvas);
}
}
}
Example 11
| Source File: AbstractOpenCVFrameWorker.java From Camdroid with Apache License 2.0 | 4 votes |
|
protected void draw() {
Utils.matToBitmap(out, this.bmp);
this.drawer.drawBitmap(this.bmp);
}
Example 12
| Source File: CameraBridgeViewBase.java From marvel with MIT License | 4 votes |
|
/**
* This method shall be called by the subclasses when they have valid
* object and want it to be delivered to external client (via callback) and
* then displayed on the screen.
* @param frame - the current frame to be delivered
*/
protected void deliverAndDrawFrame(CvCameraViewFrame frame) {
Mat modified;
if (mListener != null) {
modified = mListener.onCameraFrame(frame);
} else {
modified = frame.rgba();
}
boolean bmpValid = true;
if (modified != null) {
try {
Utils.matToBitmap(modified, mCacheBitmap);
} catch(Exception e) {
Log.e(TAG, "Mat type: " + modified);
Log.e(TAG, "Bitmap type: " + mCacheBitmap.getWidth() + "*" + mCacheBitmap.getHeight());
Log.e(TAG, "Utils.matToBitmap() throws an exception: " + e.getMessage());
bmpValid = false;
}
}
if (bmpValid && mCacheBitmap != null) {
Canvas canvas = getHolder().lockCanvas();
if (canvas != null) {
canvas.drawColor(0, android.graphics.PorterDuff.Mode.CLEAR);
Log.d(TAG, "mStretch value: " + mScale);
if (mScale != 0) {
canvas.drawBitmap(mCacheBitmap, new Rect(0,0,mCacheBitmap.getWidth(), mCacheBitmap.getHeight()),
new Rect((int)((canvas.getWidth() - mScale*mCacheBitmap.getWidth()) / 2),
(int)((canvas.getHeight() - mScale*mCacheBitmap.getHeight()) / 2),
(int)((canvas.getWidth() - mScale*mCacheBitmap.getWidth()) / 2 + mScale*mCacheBitmap.getWidth()),
(int)((canvas.getHeight() - mScale*mCacheBitmap.getHeight()) / 2 + mScale*mCacheBitmap.getHeight())), null);
} else {
canvas.drawBitmap(mCacheBitmap, new Rect(0,0,mCacheBitmap.getWidth(), mCacheBitmap.getHeight()),
new Rect((canvas.getWidth() - mCacheBitmap.getWidth()) / 2,
(canvas.getHeight() - mCacheBitmap.getHeight()) / 2,
(canvas.getWidth() - mCacheBitmap.getWidth()) / 2 + mCacheBitmap.getWidth(),
(canvas.getHeight() - mCacheBitmap.getHeight()) / 2 + mCacheBitmap.getHeight()), null);
}
if (mFpsMeter != null) {
mFpsMeter.measure();
mFpsMeter.draw(canvas, 20, 30);
}
getHolder().unlockCanvasAndPost(canvas);
}
}
}
Example 13
| Source File: CameraBridgeViewBase.java From Camdroid with Apache License 2.0 | 4 votes |
|
/**
* This method shall be called by the subclasses when they have valid
* object and want it to be delivered to external client (via callback) and
* then displayed on the screen.
* @param frame - the current frame to be delivered
*/
protected void deliverAndDrawFrame(CvCameraViewFrame frame) {
Mat modified;
if (mListener != null) {
modified = mListener.onCameraFrame(frame);
} else {
modified = frame.rgba();
}
boolean bmpValid = true;
if (modified != null) {
try {
Utils.matToBitmap(modified, mCacheBitmap);
} catch(Exception e) {
Log.e(TAG, "Mat type: " + modified);
Log.e(TAG, "Bitmap type: " + mCacheBitmap.getWidth() + "*" + mCacheBitmap.getHeight());
Log.e(TAG, "Utils.matToBitmap() throws an exception: " + e.getMessage());
bmpValid = false;
}
}
if (bmpValid && mCacheBitmap != null) {
Canvas canvas = getHolder().lockCanvas();
if (canvas != null) {
canvas.drawColor(0, android.graphics.PorterDuff.Mode.CLEAR);
Log.d(TAG, "mStretch value: " + mScale);
if (mScale != 0) {
canvas.drawBitmap(mCacheBitmap, new Rect(0,0,mCacheBitmap.getWidth(), mCacheBitmap.getHeight()),
new Rect((int)((canvas.getWidth() - mScale*mCacheBitmap.getWidth()) / 2),
(int)((canvas.getHeight() - mScale*mCacheBitmap.getHeight()) / 2),
(int)((canvas.getWidth() - mScale*mCacheBitmap.getWidth()) / 2 + mScale*mCacheBitmap.getWidth()),
(int)((canvas.getHeight() - mScale*mCacheBitmap.getHeight()) / 2 + mScale*mCacheBitmap.getHeight())), null);
} else {
canvas.drawBitmap(mCacheBitmap, new Rect(0,0,mCacheBitmap.getWidth(), mCacheBitmap.getHeight()),
new Rect((canvas.getWidth() - mCacheBitmap.getWidth()) / 2,
(canvas.getHeight() - mCacheBitmap.getHeight()) / 2,
(canvas.getWidth() - mCacheBitmap.getWidth()) / 2 + mCacheBitmap.getWidth(),
(canvas.getHeight() - mCacheBitmap.getHeight()) / 2 + mCacheBitmap.getHeight()), null);
}
if (mFpsMeter != null) {
mFpsMeter.measure();
mFpsMeter.draw(canvas, 20, 30);
}
getHolder().unlockCanvasAndPost(canvas);
}
}
}
Example 14
| Source File: CameraBridgeViewBase.java From OpenCV-AndroidSamples with MIT License | 4 votes |
|
/**
* This method shall be called by the subclasses when they have valid
* object and want it to be delivered to external client (via callback) and
* then displayed on the screen.
* @param frame - the current frame to be delivered
*/
protected void deliverAndDrawFrame(CvCameraViewFrame frame) {
Mat modified;
if (mListener != null) {
modified = mListener.onCameraFrame(frame);
} else {
modified = frame.rgba();
}
boolean bmpValid = true;
if (modified != null) {
try {
Utils.matToBitmap(modified, mCacheBitmap);
} catch(Exception e) {
Log.e(TAG, "Mat type: " + modified);
Log.e(TAG, "Bitmap type: " + mCacheBitmap.getWidth() + "*" + mCacheBitmap.getHeight());
Log.e(TAG, "Utils.matToBitmap() throws an exception: " + e.getMessage());
bmpValid = false;
}
}
if (bmpValid && mCacheBitmap != null) {
Canvas canvas = getHolder().lockCanvas();
if (canvas != null) {
canvas.drawColor(0, android.graphics.PorterDuff.Mode.CLEAR);
Log.d(TAG, "mStretch value: " + mScale);
if (mScale != 0) {
canvas.drawBitmap(mCacheBitmap, new Rect(0,0,mCacheBitmap.getWidth(), mCacheBitmap.getHeight()),
new Rect((int)((canvas.getWidth() - mScale*mCacheBitmap.getWidth()) / 2),
(int)((canvas.getHeight() - mScale*mCacheBitmap.getHeight()) / 2),
(int)((canvas.getWidth() - mScale*mCacheBitmap.getWidth()) / 2 + mScale*mCacheBitmap.getWidth()),
(int)((canvas.getHeight() - mScale*mCacheBitmap.getHeight()) / 2 + mScale*mCacheBitmap.getHeight())), null);
} else {
canvas.drawBitmap(mCacheBitmap, new Rect(0,0,mCacheBitmap.getWidth(), mCacheBitmap.getHeight()),
new Rect((canvas.getWidth() - mCacheBitmap.getWidth()) / 2,
(canvas.getHeight() - mCacheBitmap.getHeight()) / 2,
(canvas.getWidth() - mCacheBitmap.getWidth()) / 2 + mCacheBitmap.getWidth(),
(canvas.getHeight() - mCacheBitmap.getHeight()) / 2 + mCacheBitmap.getHeight()), null);
}
if (mFpsMeter != null) {
mFpsMeter.measure();
mFpsMeter.draw(canvas, 20, 30);
}
getHolder().unlockCanvasAndPost(canvas);
}
}
}
Example 15
| Source File: CameraBridgeViewBase.java From Machine-Learning-Projects-for-Mobile-Applications with MIT License | 4 votes |
|
/**
* This method shall be called by the subclasses when they have valid
* object and want it to be delivered to external client (via callback) and
* then displayed on the screen.
* @param frame - the current frame to be delivered
*/
protected void deliverAndDrawFrame(CvCameraViewFrame frame) {
Mat modified;
if (mListener != null) {
modified = mListener.onCameraFrame(frame);
} else {
modified = frame.rgba();
}
boolean bmpValid = true;
if (modified != null) {
try {
Utils.matToBitmap(modified, mCacheBitmap);
} catch(Exception e) {
Log.e(TAG, "Mat type: " + modified);
Log.e(TAG, "Bitmap type: " + mCacheBitmap.getWidth() + "*" + mCacheBitmap.getHeight());
Log.e(TAG, "Utils.matToBitmap() throws an exception: " + e.getMessage());
bmpValid = false;
}
}
if (bmpValid && mCacheBitmap != null) {
Canvas canvas = getHolder().lockCanvas();
if (canvas != null) {
canvas.drawColor(0, android.graphics.PorterDuff.Mode.CLEAR);
Log.d(TAG, "mStretch value: " + mScale);
if (mScale != 0) {
canvas.drawBitmap(mCacheBitmap, new Rect(0,0,mCacheBitmap.getWidth(), mCacheBitmap.getHeight()),
new Rect((int)((canvas.getWidth() - mScale*mCacheBitmap.getWidth()) / 2),
(int)((canvas.getHeight() - mScale*mCacheBitmap.getHeight()) / 2),
(int)((canvas.getWidth() - mScale*mCacheBitmap.getWidth()) / 2 + mScale*mCacheBitmap.getWidth()),
(int)((canvas.getHeight() - mScale*mCacheBitmap.getHeight()) / 2 + mScale*mCacheBitmap.getHeight())), null);
} else {
canvas.drawBitmap(mCacheBitmap, new Rect(0,0,mCacheBitmap.getWidth(), mCacheBitmap.getHeight()),
new Rect((canvas.getWidth() - mCacheBitmap.getWidth()) / 2,
(canvas.getHeight() - mCacheBitmap.getHeight()) / 2,
(canvas.getWidth() - mCacheBitmap.getWidth()) / 2 + mCacheBitmap.getWidth(),
(canvas.getHeight() - mCacheBitmap.getHeight()) / 2 + mCacheBitmap.getHeight()), null);
}
if (mFpsMeter != null) {
mFpsMeter.measure();
mFpsMeter.draw(canvas, 20, 30);
}
getHolder().unlockCanvasAndPost(canvas);
}
}
}
Example 16
| Source File: CameraBridgeViewBase.java From Android-Car-duino with GNU General Public License v2.0 | 4 votes |
|
/**
* This method shall be called by the subclasses when they have valid
* object and want it to be delivered to external client (via callback) and
* then displayed on the screen.
* @param frame - the current frame to be delivered
*/
protected void deliverAndDrawFrame(CvCameraViewFrame frame) {
Mat modified;
if (mListener != null) {
modified = mListener.onCameraFrame(frame);
} else {
modified = frame.rgba();
}
boolean bmpValid = true;
if (modified != null) {
try {
Utils.matToBitmap(modified, mCacheBitmap);
} catch(Exception e) {
Log.e(TAG, "Mat type: " + modified);
Log.e(TAG, "Bitmap type: " + mCacheBitmap.getWidth() + "*" + mCacheBitmap.getHeight());
Log.e(TAG, "Utils.matToBitmap() throws an exception: " + e.getMessage());
bmpValid = false;
}
}
if (bmpValid && mCacheBitmap != null) {
Canvas canvas = getHolder().lockCanvas();
if (canvas != null) {
canvas.drawColor(0, android.graphics.PorterDuff.Mode.CLEAR);
Log.d(TAG, "mStretch value: " + mScale);
if (mScale != 0) {
canvas.drawBitmap(mCacheBitmap, new Rect(0,0,mCacheBitmap.getWidth(), mCacheBitmap.getHeight()),
new Rect((int)((canvas.getWidth() - mScale*mCacheBitmap.getWidth()) / 2),
(int)((canvas.getHeight() - mScale*mCacheBitmap.getHeight()) / 2),
(int)((canvas.getWidth() - mScale*mCacheBitmap.getWidth()) / 2 + mScale*mCacheBitmap.getWidth()),
(int)((canvas.getHeight() - mScale*mCacheBitmap.getHeight()) / 2 + mScale*mCacheBitmap.getHeight())), null);
} else {
canvas.drawBitmap(mCacheBitmap, new Rect(0,0,mCacheBitmap.getWidth(), mCacheBitmap.getHeight()),
new Rect((canvas.getWidth() - mCacheBitmap.getWidth()) / 2,
(canvas.getHeight() - mCacheBitmap.getHeight()) / 2,
(canvas.getWidth() - mCacheBitmap.getWidth()) / 2 + mCacheBitmap.getWidth(),
(canvas.getHeight() - mCacheBitmap.getHeight()) / 2 + mCacheBitmap.getHeight()), null);
}
if (mFpsMeter != null) {
mFpsMeter.measure();
mFpsMeter.draw(canvas, 20, 30);
}
getHolder().unlockCanvasAndPost(canvas);
}
}
}
Example 17
| Source File: MainActivity.java From pasm-yolov3-Android with GNU General Public License v3.0 | 4 votes |
|
@Override
protected Mat doInBackground(Mat... mats) {
Mat mRgbaTemp = mats[0];
ImageProcessor processor = new ImageProcessor(getApplicationContext(), classifier.getLabels());
if (myBitmap != null){
smallBitmap = Bitmap.createScaledBitmap(myBitmap, INPUT_SIZE, INPUT_SIZE, false);
Display display = getWindowManager().getDefaultDisplay();
Point size = new Point();
display.getSize(size);
int width = size.x;
int height = size.y;
float ratio = (float)myBitmap.getWidth() / (float)myBitmap.getHeight();
Bitmap reducedBitmap = Bitmap.createScaledBitmap(myBitmap, (int) (height * ratio), height, false);
this.publishProgress(reducedBitmap);
processor.loadImage(myBitmap, INPUT_SIZE, INPUT_SIZE);
}else{
smallBitmap = Bitmap.createBitmap(INPUT_SIZE, INPUT_SIZE, Bitmap.Config.RGB_565);
Bitmap bigBitmap = Bitmap.createBitmap(mRgbaF.width(), mRgbaF.height(), Bitmap.Config.RGB_565);
Mat mRgbaFixedSize = new Mat(INPUT_SIZE, INPUT_SIZE, CvType.CV_8UC4);
Core.transpose(mRgbaTemp, mRgbaT);
Imgproc.resize(mRgbaT, mRgbaF, mRgbaF.size(), 0,0, 0);
Core.flip(mRgbaF, mRgbaTemp, 1 );
Imgproc.resize(mRgbaTemp, mRgbaFixedSize, new Size(INPUT_SIZE, INPUT_SIZE), 0,0, 0);
Utils.matToBitmap(mRgbaFixedSize, smallBitmap);
Utils.matToBitmap(mRgbaTemp, bigBitmap);
this.publishProgress(bigBitmap);
processor.loadImage(bigBitmap, INPUT_SIZE, INPUT_SIZE);
//OLD Toast.makeText(getApplicationContext(), "Nessuna immagine caricata", Toast.LENGTH_SHORT).show();
}
List<Classifier.Recognition> recognitions = classifier.recognizeImage(smallBitmap);
Mat mat = processor.drawBoxes(recognitions, 0.2);
imageSaver.save(mat); // remove for realtime processing!
return mat;
}
Example 18
| Source File: MainActivity.java From effective_android_sample with Apache License 2.0 | 4 votes |
|
/**
* OpenCVで
* @param bmpOrig
*/
private void extractObject(Bitmap bmpOrig) {
// まずオリジナルのビットマップを表示
mImageView1.setImageBitmap(bmpOrig);
// 高さと幅を取得
int height = bmpOrig.getHeight();
int width = bmpOrig.getWidth();
// OpenCVオブジェクトの用意
Mat matOrig = new Mat(height,width,CvType.CV_8UC4);
// ビットマップをOpenCVオブジェクトに変換
Utils.bitmapToMat(bmpOrig, matOrig);
/**
* グレースケールに変換
*/
Mat matGray = new Mat(height,width,CvType.CV_8UC1);
Imgproc.cvtColor(matOrig, matGray, Imgproc.COLOR_RGB2GRAY);
// 表示
Bitmap bmpGray = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
Utils.matToBitmap(matGray, bmpGray);
mImageView2.setImageBitmap(bmpGray);
/**
* グレースケール→二値化
*/
Mat matBlack = new Mat(height,width,CvType.CV_8UC1);
// 二値化
Imgproc.threshold(matGray, matBlack, sTH, 255, Imgproc.THRESH_BINARY);
// 表示
Bitmap bmpBlack = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
Utils.matToBitmap(matBlack, bmpBlack);
mImageView3.setImageBitmap(bmpBlack);
/**
* グレースケール→二値化→輪郭塗りつぶし
*/
// 輪郭を抽出する
ArrayList<MatOfPoint> contours = new ArrayList<MatOfPoint>();
Mat hierarchy = new Mat(matBlack.height(),matBlack.width(),CvType.CV_8UC1);
int mode = Imgproc.RETR_EXTERNAL;
int method = Imgproc.CHAIN_APPROX_SIMPLE;
// 輪郭を抽出する
Imgproc.findContours(matBlack, contours, hierarchy, mode, method);
// 輪郭を描く
Scalar color = new Scalar(255.f, 0.f, 0.f, 0.f);
Imgproc.drawContours(matBlack, contours, -1, color, 2);
// 表示
Bitmap bmpContour = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
org.opencv.android.Utils.matToBitmap(matBlack, bmpContour);
mImageView4.setImageBitmap(bmpContour);
// 抽出した輪郭の内部を塗りつぶす
Imgproc.drawContours(matBlack, contours, -1, color, -1);
// 表示
Bitmap bmpContour2 = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
org.opencv.android.Utils.matToBitmap(matBlack, bmpContour2);
mImageView5.setImageBitmap(bmpContour2);
/**
* 二値化したマスクを使ってオブジェクトだけをとりだす
*/
Mat matObject = new Mat(height,width,CvType.CV_8UC4);
Core.add(matObject, matOrig, matObject, matBlack);
// 表示
Bitmap bmpObject = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
org.opencv.android.Utils.matToBitmap(matObject, bmpObject);
mImageView6.setImageBitmap(bmpObject);
/**
* とりだしたオブジェクトに外接する矩形のみをBMPとして抜き出す
*/
Rect rect = Imgproc.boundingRect(contours.get(0));
Mat matCut = new Mat(matObject, rect);
// 表示
Bitmap bmpCut = Bitmap.createBitmap(matCut.cols(), matCut.rows(), Bitmap.Config.ARGB_8888);
org.opencv.android.Utils.matToBitmap(matCut, bmpCut);
mImageView7.setImageBitmap(bmpCut);
}
Example 19
| Source File: ImageUtils.java From AndroidDocumentScanner with MIT License | 4 votes |
|
public static Bitmap matToBitmap(Mat mat) {
Bitmap bitmap = Bitmap.createBitmap(mat.cols(), mat.rows(), Bitmap.Config.ARGB_8888);
Utils.matToBitmap(mat, bitmap);
return bitmap;
}
Example 20
| Source File: PersonRecognizer.java From marvel with MIT License | 3 votes |
|
IplImage MatToIplImage(Mat m,int width,int heigth)
{
Bitmap bmp=Bitmap.createBitmap(m.width(), m.height(), Bitmap.Config.ARGB_8888);
Utils.matToBitmap(m, bmp);
return BitmapToIplImage(bmp,width, heigth);
}
