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adding Histogram and Posterize, removing Blur from 'image manipulation' Java sample

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This commit is contained in:
Andrey Pavlenko 2012-04-27 14:40:25 +00:00
parent 7ac713405f
commit 52f5009a4c
3 changed files with 107 additions and 22 deletions
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21
samples/android/image-manipulations/src/org/opencv/samples/imagemanipulations/ImageManipulationsActivity.java
View File

@ -11,20 +11,22 @@ public class ImageManipulationsActivity extends Activity {
private static final String TAG = "Sample::Activity";
public static final int VIEW_MODE_RGBA = 0;
public static final int VIEW_MODE_CANNY = 1;
public static final int VIEW_MODE_SEPIA = 2;
public static final int VIEW_MODE_SOBEL = 3;
public static final int VIEW_MODE_BLUR = 4;
public static final int VIEW_MODE_HIST = 1;
public static final int VIEW_MODE_CANNY = 2;
public static final int VIEW_MODE_SEPIA = 3;
public static final int VIEW_MODE_SOBEL = 4;
public static final int VIEW_MODE_ZOOM = 5;
public static final int VIEW_MODE_PIXELIZE = 6;
public static final int VIEW_MODE_POSTERIZE = 7;
private MenuItem mItemPreviewRGBA;
private MenuItem mItemPreviewHist;
private MenuItem mItemPreviewCanny;
private MenuItem mItemPreviewSepia;
private MenuItem mItemPreviewSobel;
private MenuItem mItemPreviewBlur;
private MenuItem mItemPreviewZoom;
private MenuItem mItemPreviewPixelize;
private MenuItem mItemPreviewPosterize;
public static int viewMode = VIEW_MODE_RGBA;
@ -45,12 +47,13 @@ public class ImageManipulationsActivity extends Activity {
public boolean onCreateOptionsMenu(Menu menu) {
Log.i(TAG, "onCreateOptionsMenu");
mItemPreviewRGBA = menu.add("Preview RGBA");
mItemPreviewHist = menu.add("Histograms");
mItemPreviewCanny = menu.add("Canny");
mItemPreviewSepia = menu.add("Sepia");
mItemPreviewSobel = menu.add("Sobel");
mItemPreviewBlur = menu.add("Blur");
mItemPreviewZoom = menu.add("Zoom");
mItemPreviewPixelize = menu.add("Pixelize");
mItemPreviewPosterize = menu.add("Posterize");
return true;
}
@ -59,18 +62,20 @@ public class ImageManipulationsActivity extends Activity {
Log.i(TAG, "Menu Item selected " + item);
if (item == mItemPreviewRGBA)
viewMode = VIEW_MODE_RGBA;
if (item == mItemPreviewHist)
viewMode = VIEW_MODE_HIST;
else if (item == mItemPreviewCanny)
viewMode = VIEW_MODE_CANNY;
else if (item == mItemPreviewSepia)
viewMode = VIEW_MODE_SEPIA;
else if (item == mItemPreviewSobel)
viewMode = VIEW_MODE_SOBEL;
else if (item == mItemPreviewBlur)
viewMode = VIEW_MODE_BLUR;
else if (item == mItemPreviewZoom)
viewMode = VIEW_MODE_ZOOM;
else if (item == mItemPreviewPixelize)
viewMode = VIEW_MODE_PIXELIZE;
else if (item == mItemPreviewPosterize)
viewMode = VIEW_MODE_POSTERIZE;
return true;
}
}

98
samples/android/image-manipulations/src/org/opencv/samples/imagemanipulations/ImageManipulationsView.java
View File

@ -1,8 +1,12 @@
package org.opencv.samples.imagemanipulations;
import java.util.Arrays;
import org.opencv.android.Utils;
import org.opencv.core.Core;
import org.opencv.core.Mat;
import org.opencv.core.MatOfFloat;
import org.opencv.core.MatOfInt;
import org.opencv.core.Size;
import org.opencv.core.Point;
import org.opencv.core.Scalar;
@ -18,11 +22,19 @@ import android.view.SurfaceHolder;
class ImageManipulationsView extends SampleCvViewBase {
private Size mSize0;
private Size mSizeRgba;
private Size mSizeRgbaInner;
private Mat mRgba;
private Mat mGray;
private Mat mIntermediateMat;
private Mat mHist, mMat0;
private MatOfInt mChannels[], mHistSize;
private int mHistSizeNum;
private MatOfFloat mRanges;
private Scalar mColorsRGB[], mColorsHue[], mWhilte;
private Point mP1, mP2;
float mBuff[];
private Mat mRgbaInnerWindow;
private Mat mGrayInnerWindow;
@ -52,6 +64,24 @@ class ImageManipulationsView extends SampleCvViewBase {
mRgba = new Mat();
mIntermediateMat = new Mat();
mSize0 = new Size();
mHist = new Mat();
mChannels = new MatOfInt[] { new MatOfInt(0), new MatOfInt(1), new MatOfInt(2) };
mHistSizeNum = 25;
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();
}
}
@ -59,8 +89,10 @@ class ImageManipulationsView extends SampleCvViewBase {
if (mRgba.empty())
return;
int rows = mRgba.rows();
int cols = mRgba.cols();
mSizeRgba = mRgba.size();
int rows = (int) mSizeRgba.height;
int cols = (int) mSizeRgba.width;
int left = cols / 8;
int top = rows / 8;
@ -93,6 +125,49 @@ class ImageManipulationsView extends SampleCvViewBase {
capture.retrieve(mRgba, Highgui.CV_CAP_ANDROID_COLOR_FRAME_RGBA);
break;
case ImageManipulationsActivity.VIEW_MODE_HIST:
capture.retrieve(mRgba, Highgui.CV_CAP_ANDROID_COLOR_FRAME_RGBA);
if (mSizeRgba == null)
CreateAuxiliaryMats();
int thikness = (int) (mSizeRgba.width / (mHistSizeNum + 10) / 5);
if(thikness > 5) thikness = 5;
int offset = (int) ((mSizeRgba.width - (5*mHistSizeNum + 4*10)*thikness)/2);
// RGB
for(int c=0; c<3; c++) {
Imgproc.calcHist(Arrays.asList(mRgba), mChannels[c], mMat0, mHist, mHistSize, mRanges);
Core.normalize(mHist, mHist, mSizeRgba.height/2, 0, Core.NORM_INF);
mHist.get(0, 0, mBuff);
for(int h=0; h<mHistSizeNum; h++) {
mP1.x = mP2.x = offset + (c * (mHistSizeNum + 10) + h) * thikness;
mP1.y = mSizeRgba.height-1;
mP2.y = mP1.y - 2 - (int)mBuff[h];
Core.line(mRgba, mP1, mP2, mColorsRGB[c], thikness);
}
}
// Value and Hue
Imgproc.cvtColor(mRgba, mIntermediateMat, Imgproc.COLOR_RGB2HSV_FULL);
// Value
Imgproc.calcHist(Arrays.asList(mIntermediateMat), mChannels[2], mMat0, mHist, mHistSize, mRanges);
Core.normalize(mHist, mHist, mSizeRgba.height/2, 0, Core.NORM_INF);
mHist.get(0, 0, mBuff);
for(int h=0; h<mHistSizeNum; h++) {
mP1.x = mP2.x = offset + (3 * (mHistSizeNum + 10) + h) * thikness;
mP1.y = mSizeRgba.height-1;
mP2.y = mP1.y - 2 - (int)mBuff[h];
Core.line(mRgba, mP1, mP2, mWhilte, thikness);
}
// Hue
Imgproc.calcHist(Arrays.asList(mIntermediateMat), mChannels[0], mMat0, mHist, mHistSize, mRanges);
Core.normalize(mHist, mHist, mSizeRgba.height/2, 0, Core.NORM_INF);
mHist.get(0, 0, mBuff);
for(int h=0; h<mHistSizeNum; h++) {
mP1.x = mP2.x = offset + (4 * (mHistSizeNum + 10) + h) * thikness;
mP1.y = mSizeRgba.height-1;
mP2.y = mP1.y - 2 - (int)mBuff[h];
Core.line(mRgba, mP1, mP2, mColorsHue[h], thikness);
}
break;
case ImageManipulationsActivity.VIEW_MODE_CANNY:
capture.retrieve(mRgba, Highgui.CV_CAP_ANDROID_COLOR_FRAME_RGBA);
capture.retrieve(mGray, Highgui.CV_CAP_ANDROID_GREY_FRAME);
@ -121,13 +196,6 @@ class ImageManipulationsView extends SampleCvViewBase {
Core.transform(mRgba, mRgba, mSepiaKernel);
break;
case ImageManipulationsActivity.VIEW_MODE_BLUR:
capture.retrieve(mRgba, Highgui.CV_CAP_ANDROID_COLOR_FRAME_RGBA);
if (mBlurWindow == null)
CreateAuxiliaryMats();
Imgproc.blur(mBlurWindow, mBlurWindow, new Size(15, 15));
break;
case ImageManipulationsActivity.VIEW_MODE_ZOOM:
capture.retrieve(mRgba, Highgui.CV_CAP_ANDROID_COLOR_FRAME_RGBA);
if (mZoomCorner == null || mZoomWindow == null)
@ -146,6 +214,18 @@ class ImageManipulationsView extends SampleCvViewBase {
Imgproc.resize(mIntermediateMat, mRgbaInnerWindow, mSizeRgbaInner, 0., 0., Imgproc.INTER_NEAREST);
break;
case ImageManipulationsActivity.VIEW_MODE_POSTERIZE:
capture.retrieve(mRgba, Highgui.CV_CAP_ANDROID_COLOR_FRAME_RGBA);
if (mRgbaInnerWindow == null)
CreateAuxiliaryMats();
/*
Imgproc.cvtColor(mRgbaInnerWindow, mIntermediateMat, Imgproc.COLOR_RGBA2RGB);
Imgproc.pyrMeanShiftFiltering(mIntermediateMat, mIntermediateMat, 5, 50);
Imgproc.cvtColor(mIntermediateMat, mRgbaInnerWindow, Imgproc.COLOR_RGB2RGBA);
*/
Core.convertScaleAbs(mRgbaInnerWindow, mIntermediateMat, 1./64, 0);
Core.convertScaleAbs(mIntermediateMat, mRgbaInnerWindow, 64, 0);
break;
}
Bitmap bmp = Bitmap.createBitmap(mRgba.cols(), mRgba.rows(), Bitmap.Config.ARGB_8888);

2
samples/android/image-manipulations/src/org/opencv/samples/imagemanipulations/SampleCvViewBase.java
View File

@ -104,7 +104,7 @@ public abstract class SampleCvViewBase extends SurfaceView implements SurfaceHol
if (bmp != null) {
Canvas canvas = mHolder.lockCanvas();
if (canvas != null) {
canvas.drawBitmap(bmp, (canvas.getWidth() - bmp.getWidth()) / 2, (canvas.getHeight() - bmp.getHeight()) / 2, null);
canvas.drawBitmap(bmp, (canvas.getWidth() - bmp.getWidth()) / 2, (canvas.getHeight() - bmp.getHeight()), null);
mFps.draw(canvas, (canvas.getWidth() - bmp.getWidth()) / 2, 0);
mHolder.unlockCanvasAndPost(canvas);
}