Comment faire pour simuler l'effet fisheye par openCV?

Grâce à la ci-dessus 2 de ce code. J'ai modifié les ci-dessus transcrit le code en Java pour utiliser des Bitmaps au lieu de BufferedImage. Cela permet l'exécution de code sur Android(qui ne prend pas en charge AWT). J'ai aussi fait l'effet de manipuler les pixels dans un cercle plutôt que l'ensemble de l'image Bitmap, ce qui donne un fisheye "objectif" de l'effet. Espérant que cela aide les développeurs Android.

import android.graphics.Bitmap;
import android.util.Log;

class Filters{
    float xscale;
    float yscale;
    float xshift;
    float yshift;
    int [] s;
    private String TAG = "Filters";
    public Filters(){

        Log.e(TAG, "***********inside constructor");
    }

    public Bitmap barrel (Bitmap input, float k){
        Log.e(TAG, "***********inside barrel method ");
        float centerX=input.getWidth()/2; //center of distortion
        float centerY=input.getHeight()/2;

        int width = input.getWidth(); //image bounds
        int height = input.getHeight();

        Bitmap dst = Bitmap.createBitmap(width, height,input.getConfig() ); //output pic
        Log.e(TAG, "***********dst bitmap created ");
          xshift = calc_shift(0,centerX-1,centerX,k);
          float newcenterX = width-centerX;
          float xshift_2 = calc_shift(0,newcenterX-1,newcenterX,k);

          yshift = calc_shift(0,centerY-1,centerY,k);
          float newcenterY = height-centerY;
          float yshift_2 = calc_shift(0,newcenterY-1,newcenterY,k);

          xscale = (width-xshift-xshift_2)/width;
          yscale = (height-yshift-yshift_2)/height;
          Log.e(TAG, "***********about to loop through bm");
          /*for(int j=0;j<dst.getHeight();j++){
              for(int i=0;i<dst.getWidth();i++){
                float x = getRadialX((float)i,(float)j,centerX,centerY,k);
                float y = getRadialY((float)i,(float)j,centerX,centerY,k);
                sampleImage(input,x,y);
                int color = ((s[1]&0x0ff)<<16)|((s[2]&0x0ff)<<8)|(s[3]&0x0ff);
    //           System.out.print(i+" "+j+" \\");

                dst.setPixel(i, j, color);

              }
            }*/

          int origPixel; //the pixel in orig image

          for(int j=0;j<dst.getHeight();j++){
              for(int i=0;i<dst.getWidth();i++){
                 origPixel= input.getPixel(i,j);
                float x = getRadialX((float)i,(float)j,centerX,centerY,k);
                float y = getRadialY((float)i,(float)j,centerX,centerY,k);
                sampleImage(input,x,y);
                int color = ((s[1]&0x0ff)<<16)|((s[2]&0x0ff)<<8)|(s[3]&0x0ff);
    //           System.out.print(i+" "+j+" \\");


//check whether a pixel is within the circle bounds of 150

                if( Math.sqrt( Math.pow(i - centerX, 2) + ( Math.pow(j - centerY, 2) ) ) <= 150 ){
                dst.setPixel(i, j, color);
                }else{
                    dst.setPixel(i,j,origPixel);
                }
              }
            }
        return dst;
    }

    void sampleImage(Bitmap arr, float idx0, float idx1)
    {
        s = new int [4];
      if(idx0<0 || idx1<0 || idx0>(arr.getHeight()-1) || idx1>(arr.getWidth()-1)){
        s[0]=0;
        s[1]=0;
        s[2]=0;
        s[3]=0;
        return;
      }

      float idx0_fl=(float) Math.floor(idx0);
      float idx0_cl=(float) Math.ceil(idx0);
      float idx1_fl=(float) Math.floor(idx1);
      float idx1_cl=(float) Math.ceil(idx1);

      int [] s1 = getARGB(arr,(int)idx0_fl,(int)idx1_fl);
      int [] s2 = getARGB(arr,(int)idx0_fl,(int)idx1_cl);
      int [] s3 = getARGB(arr,(int)idx0_cl,(int)idx1_cl);
      int [] s4 = getARGB(arr,(int)idx0_cl,(int)idx1_fl);

      float x = idx0 - idx0_fl;
      float y = idx1 - idx1_fl;

      s[0]= (int) (s1[0]*(1-x)*(1-y) + s2[0]*(1-x)*y + s3[0]*x*y + s4[0]*x*(1-y));
      s[1]= (int) (s1[1]*(1-x)*(1-y) + s2[1]*(1-x)*y + s3[1]*x*y + s4[1]*x*(1-y));
      s[2]= (int) (s1[2]*(1-x)*(1-y) + s2[2]*(1-x)*y + s3[2]*x*y + s4[2]*x*(1-y));
      s[3]= (int) (s1[3]*(1-x)*(1-y) + s2[3]*(1-x)*y + s3[3]*x*y + s4[3]*x*(1-y));
    }

    int [] getARGB(Bitmap buf,int x, int y){
        int rgb = buf.getPixel(y, x); //Returns by default ARGB.
        int [] scalar = new int[4];
        scalar[0] = (rgb >>> 24) & 0xFF;
        scalar[1] = (rgb >>> 16) & 0xFF;
        scalar[2] = (rgb >>> 8) & 0xFF;
        scalar[3] = (rgb >>> 0) & 0xFF;
        return scalar;
    }

    float getRadialX(float x,float y,float cx,float cy,float k){
      x = (x*xscale+xshift);
      y = (y*yscale+yshift);
      float res = x+((x-cx)*k*((x-cx)*(x-cx)+(y-cy)*(y-cy)));
      return res;
    }

    float getRadialY(float x,float y,float cx,float cy,float k){
      x = (x*xscale+xshift);
      y = (y*yscale+yshift);
      float res = y+((y-cy)*k*((x-cx)*(x-cx)+(y-cy)*(y-cy)));
      return res;
    }

    float thresh = 1;

    float calc_shift(float x1,float x2,float cx,float k){
      float x3 = (float)(x1+(x2-x1)*0.5);
      float res1 = x1+((x1-cx)*k*((x1-cx)*(x1-cx)));
      float res3 = x3+((x3-cx)*k*((x3-cx)*(x3-cx)));

      if(res1>-thresh && res1 < thresh)
        return x1;
      if(res3<0){
        return calc_shift(x3,x2,cx,k);
      }
      else{
        return calc_shift(x1,x3,cx,k);
      }
    }
}

.

import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.FutureTask;
import android.graphics.Bitmap;
import android.graphics.drawable.BitmapDrawable;
import android.os.Debug;
import android.util.Log;
public class MultiRuntimeProcessorFilter {
private static final String TAG = "mrpf";
private int x = 0;
private Bitmap input = null;
private int radius;
public void createBitmapSections(int nOp, int[] sections){
int processors = nOp;
int jMax = input.getHeight();
int aSectionSize = (int) Math.ceil(jMax/processors);
Log.e(TAG, "++++++++++ sections size = "+aSectionSize);
int k = 0;
for(int h=0; h<processors+1; h++){
sections[h] = k;
k+= aSectionSize;
}
}//end of createBitmapSections()
@SuppressWarnings("unchecked")
public Bitmap barrel (Bitmap input, float k, int r){
this.radius = r;
this.input = input;
int []arr = new int[input.getWidth()*input.getHeight()];
Log.e(TAG, "bitmap height = "+input.getHeight()); 
int nrOfProcessors = Runtime.getRuntime().availableProcessors();
Log.e(TAG, "no of processors = "+nrOfProcessors);
int[] sections = new int[nrOfProcessors+1];
createBitmapSections(nrOfProcessors,sections);
ExecutorService threadPool = Executors.newFixedThreadPool(nrOfProcessors);
for(int g=0; g<sections.length;g++){
Log.e(TAG, "++++++++++ sections= "+sections[g]);
}
//ExecutorService threadPool = Executors.newFixedThreadPool(nrOfProcessors);
Object[] task = new Object[nrOfProcessors];
for(int z = 0; z < nrOfProcessors; z++){
task[z]  = (FutureTask<PartialResult>) threadPool.submit(new PartialProcessing(sections[z], sections[z+1] - 1, input, k));  
Log.e(TAG, "++++++++++ task"+z+"= "+task[z].toString()); 
}
PartialResult[] results = new PartialResult[nrOfProcessors];
try{
for(int t = 0; t < nrOfProcessors; t++){
results[t] = ((FutureTask<PartialResult>) task[t]).get();
results[t].fill(arr);
}
}catch(Exception e){
e.printStackTrace();
}
Bitmap dst2 = Bitmap.createBitmap(arr,input.getWidth(),input.getHeight(),input.getConfig());
return dst2;
}//end of barrel()
public class PartialResult {
int startP;
int endP;
int[] storedValues;
public PartialResult(int startp, int endp, Bitmap input){
this.startP = startp;
this.endP = endp;
this.storedValues = new int[input.getWidth()*input.getHeight()];
}
public void addValue(int p, int result) {
storedValues[p] = result;
}
public void fill(int[] arr) {
for (int p = startP; p < endP; p++){
for(int b=0;b<radius;b++,x++)
arr[x] = storedValues[x];
} 
Log.e(TAG, "++++++++++ x ="+x);
}
}//end of partialResult
public class PartialProcessing implements Callable<PartialResult> {
int startJ;
int endJ;
private int[] scalar;
private float xscale;
private float yscale;
private float xshift;
private float yshift;
private float thresh = 1;
private int [] s1;
private int [] s2;
private int [] s3;
private int [] s4;
private int [] s;
private Bitmap input;
private float k;
public PartialProcessing(int startj, int endj, Bitmap input, float k) {
this.startJ = startj;
this.endJ = endj;
this.input = input;
this.k = k;
s = new int[4];
scalar = new int[4];
s1 = new int[4];
s2 = new int[4];
s3 = new int[4];
s4 = new int[4];
}
int [] getARGB(Bitmap buf,int x, int y){
int rgb = buf.getPixel(y, x); //Returns by default ARGB.
//int [] scalar = new int[4];
// scalar[0] = (rgb >>> 24) & 0xFF;
scalar[1] = (rgb >>> 16) & 0xFF;
scalar[2] = (rgb >>> 8) & 0xFF;
scalar[3] = (rgb >>> 0) & 0xFF;
return scalar;
}
float getRadialX(float x,float y,float cx,float cy,float k){
x = (x*xscale+xshift);
y = (y*yscale+yshift);
float res = x+((x-cx)*k*((x-cx)*(x-cx)+(y-cy)*(y-cy)));
return res;
}
float getRadialY(float x,float y,float cx,float cy,float k){
x = (x*xscale+xshift);
y = (y*yscale+yshift);
float res = y+((y-cy)*k*((x-cx)*(x-cx)+(y-cy)*(y-cy)));
return res;
}
float calc_shift(float x1,float x2,float cx,float k){
float x3 = (float)(x1+(x2-x1)*0.5);
float res1 = x1+((x1-cx)*k*((x1-cx)*(x1-cx)));
float res3 = x3+((x3-cx)*k*((x3-cx)*(x3-cx)));
if(res1>-thresh && res1 < thresh)
return x1;
if(res3<0){
return calc_shift(x3,x2,cx,k);
}
else{
return calc_shift(x1,x3,cx,k);
}
}
void sampleImage(Bitmap arr, float idx0, float idx1)
{
//s = new int [4];
if(idx0<0 || idx1<0 || idx0>(arr.getHeight()-1) || idx1>(arr.getWidth()-1)){
s[0]=0;
s[1]=0;
s[2]=0;
s[3]=0;
return;
}
float idx0_fl=(float) Math.floor(idx0);
float idx0_cl=(float) Math.ceil(idx0);
float idx1_fl=(float) Math.floor(idx1);
float idx1_cl=(float) Math.ceil(idx1);
s1 = getARGB(arr,(int)idx0_fl,(int)idx1_fl);
s2 = getARGB(arr,(int)idx0_fl,(int)idx1_cl);
s3 = getARGB(arr,(int)idx0_cl,(int)idx1_cl);
s4 = getARGB(arr,(int)idx0_cl,(int)idx1_fl);
float x = idx0 - idx0_fl;
float y = idx1 - idx1_fl;
//s[0]= (int) (s1[0]*(1-x)*(1-y) + s2[0]*(1-x)*y + s3[0]*x*y + s4[0]*x*(1-y));
s[1]= (int) (s1[1]*(1-x)*(1-y) + s2[1]*(1-x)*y + s3[1]*x*y + s4[1]*x*(1-y));
s[2]= (int) (s1[2]*(1-x)*(1-y) + s2[2]*(1-x)*y + s3[2]*x*y + s4[2]*x*(1-y));
s[3]= (int) (s1[3]*(1-x)*(1-y) + s2[3]*(1-x)*y + s3[3]*x*y + s4[3]*x*(1-y));
}
@Override public PartialResult call() { 
PartialResult partialResult = new PartialResult(startJ, endJ,input);
float centerX=input.getWidth()/2; //center of distortion
float centerY=input.getHeight()/2;
int width = input.getWidth(); //image bounds
int height = input.getHeight();
xshift = calc_shift(0,centerX-1,centerX,k);
float newcenterX = width-centerX;
float xshift_2 = calc_shift(0,newcenterX-1,newcenterX,k);
yshift = calc_shift(0,centerY-1,centerY,k);
float newcenterY = height-centerY;
float yshift_2 = calc_shift(0,newcenterY-1,newcenterY,k);
xscale = (width-xshift-xshift_2)/width;
yscale = (height-yshift-yshift_2)/height;
int p = startJ*radius; 
int origPixel = 0;
int color = 0;
int i;
for (int j = startJ; j <  endJ; j++){
for ( i = 0; i < width; i++, p++){
origPixel = input.getPixel(i,j);
float x = getRadialX((float)j,(float)i,centerX,centerY,k);
float y = getRadialY((float)j,(float)i,centerX,centerY,k);
sampleImage(input,x,y);
color = ((s[1]&0x0ff)<<16)|((s[2]&0x0ff)<<8)|(s[3]&0x0ff);
//Log.e(TAG, "radius = "+radius);
if(((i-centerX)*(i-centerX) + (j-centerY)*(j-centerY)) <= radius*(radius/4)){
partialResult.addValue(p, color);
}else{
partialResult.addValue(p, origPixel);
}
}//end of inner for
}//end of outer for
return partialResult;
}//end of call
}//end of partialprocessing
}//end of MultiProcesorFilter

@And_Dev comme promis

Ci-dessous est le point de vue que les utilisateurs touch co-ords et appelle ensuite le filtre sur une zone sélectionnée. la zone sélectionnée est le cordon par exemple le centre du cercle, plus un rayon d'un cercle). pour cela, le code deux fois pour une augmentation mammaire app:) Juste un commentaire le HorizontalSlider code que vous n'avez pas besoin de cela.

import java.io.BufferedInputStream;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.PorterDuff.Mode;
import android.graphics.PorterDuffXfermode;
import android.os.Environment;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import com.tecmark.HorizontalSlider.OnProgressChangeListener;
public class TouchView extends View{
private File tempFile;
private byte[] imageArray;
private Bitmap bgr;
private Bitmap crop;
private Bitmap crop2;
private Bitmap overLay;
private Bitmap overLay2;
private float centreX;
private float centreY;
private float centreA = 200;
private float centreB = 200;
private Boolean xyFound = false;
private int Progress = 1;
private static final String TAG = "*********TouchView";
private Filters f = null;
private boolean bothCirclesInPlace = false;
private MultiProcessorFilter mpf;
private MultiProcessorFilter mpf2;
private MultiRuntimeProcessorFilter mrpf;
private MultiRuntimeProcessorFilter mrpf2;
public TouchView(Context context) {
super(context);
}
public TouchView(Context context, AttributeSet attr) {
super(context,attr);
Log.e(TAG, "++++++++++ inside touchview constructor");
tempFile = new File(Environment.getExternalStorageDirectory().
getAbsolutePath() + "/"+"image.jpg");
imageArray = new byte[(int)tempFile.length()];
try{
InputStream is = new FileInputStream(tempFile);
BufferedInputStream bis = new BufferedInputStream(is);
DataInputStream dis = new DataInputStream(bis);
int i = 0;
while (dis.available() > 0) {
imageArray[i] = dis.readByte();
i++;
}
dis.close();
} catch (Exception e) {
e.printStackTrace();
}
Bitmap bm = BitmapFactory.decodeByteArray(imageArray, 0, imageArray.length);
bgr = bm.copy(bm.getConfig(), true);;
overLay = null;
overLay2 = null;
bm.recycle();
}//end of touchView constructor
public void findCirclePixels(){ 
// f = new Filters();
// mpf = new MultiProcessorFilter();
// mpf2 = new MultiProcessorFilter();
mrpf = new MultiRuntimeProcessorFilter();
mrpf2 = new MultiRuntimeProcessorFilter();
crop = Bitmap.createBitmap(bgr,Math.max((int)centreX-75,0),Math.max((int)centreY-75,0),150,150);
crop2 = Bitmap.createBitmap(bgr,Math.max((int)centreA-75,0),Math.max((int)centreB-75,0),150,150);
new Thread(new Runnable() {
public void run() {
float prog = (float)Progress/150001;
//final Bitmap bgr3 = f.barrel(crop,prog);
//final Bitmap bgr4 = f.barrel(crop2,prog);
// final Bitmap bgr3 = mpf.barrel(crop,prog);
// final Bitmap bgr4 = mpf2.barrel(crop2,prog);
final Bitmap bgr3 = mrpf.barrel(crop,prog);
final Bitmap bgr4 = mrpf2.barrel(crop2,prog);
TouchView.this.post(new Runnable() {
public void run() {
TouchView.this.overLay = bgr3;
TouchView.this.overLay2 = bgr4;
TouchView.this.invalidate();
}
});
}
}).start();
}//end of changePixel()
@Override
public boolean onTouchEvent(MotionEvent ev) {
switch (ev.getAction()) {
case MotionEvent.ACTION_DOWN: {
if(xyFound == false){
centreX = (int) ev.getX();
centreY = (int) ev.getY();
xyFound = true;
}else{
centreA = (int) ev.getX();
centreB = (int) ev.getY();
bothCirclesInPlace  = true;
}
break;
}
/*  case MotionEvent.ACTION_MOVE: {
if(xyFound == false){
centreX = (int) ev.getX();
centreY = (int) ev.getY();
xyFound = true;
}else{
centreA = (int) ev.getX();
centreB = (int) ev.getY();
bothCirclesInPlace = true;
}
findCirclePixels();
//TouchView.this.invalidate();
break;
}*/          
case MotionEvent.ACTION_UP: 
break;
}
return true;
}//end of onTouchEvent
public void initSlider(final HorizontalSlider slider)
{
slider.setOnProgressChangeListener(changeListener);
}
private OnProgressChangeListener changeListener = new OnProgressChangeListener() {
@Override
public void onProgressChanged(View v, int progress) {
setProgress(progress);
}
};
@Override
public void onDraw(Canvas canvas){
super.onDraw(canvas);
Log.e(TAG, "******about to draw bgr ");
canvas.drawBitmap(bgr, 0, 0, null);
if(bothCirclesInPlace == true){
if(overLay != null){
Log.e(TAG, "******about to draw overlay1 ");
canvas.drawBitmap(overLay, centreX-75, centreY-75, null);
}
if(overLay2 != null){
Log.e(TAG, "******about to draw overlay2 ");
canvas.drawBitmap(overLay2, centreA-75, centreB-75, null);
}
}
}//end of onDraw
protected void setProgress(int progress2) {
Log.e(TAG, "***********in SETPROGRESS");
this.Progress = progress2;
findCirclePixels();
}
}

.

L'appel de l'activité.

import android.app.Activity;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.view.View.OnClickListener;
import android.widget.Button;
public class Jjilapp extends Activity {
private static final String TAG = "*********jjil";
@Override 
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.touchview);
final TouchView touchView = (TouchView)findViewById(R.id.touchview); 
final HorizontalSlider slider = (HorizontalSlider)findViewById(R.id.slider); 
touchView.initSlider(slider);
}//end of oncreate
}

Si vous avez besoin d'aide mate, il suffit de demander. espérons que cela aide

J'ai débogué les fichiers java et il fonctionne très bien sur mon téléphone(supérieur à 4.0). Il se compose de 3 fichiers java et 1 fichier xml. Vous avez de la place checkerboardback.jpg fichier sous drawaable répertoire. Comme quelqu'un l'a dit, la valeur alpha est manquant et je l'ai donné "0x0ff". En outre, upperbound de certains Boucle ont été mauvais.

//1. MultiRuntimeProcessorFilter.java

public class MultiRuntimeProcessorFilter {
private static final String TAG = "mrpf";
private int x = 0;
private Bitmap input = null;
private int radius;
private int mHeight;
public void createBitmapSections(int nOp, int[] sections){
int processors = nOp;
int jMax = input.getHeight();
int aSectionSize = (int) Math.ceil(jMax/processors);
Log.e("yoSIZECHK", "++++++++++ sections size = "+aSectionSize);
int k = 0;
for(int h=0; h<processors+1; h++){
sections[h] = k;
k+= aSectionSize;
if(h==processors){
sections[h] = mHeight;//Last must cover ceiling
}
Log.v("yoSEC","sections = "+h+" "+sections[h]);
}
}//end of createBitmapSections()
//@SuppressWarnings("unchecked")
public Bitmap barrel (Bitmap input, float k, int r){
this.radius = r;
this.input = input;
int []mArray = new int[input.getWidth()*input.getHeight()];
mHeight = input.getHeight();
Log.e(TAG, "bitmap height x width = "+mHeight+" "+input.getWidth());
//Log.v("yoRESULT", "height width = "+ input.getWidth()+" "+input.getHeight());
int nrOfProcessors = Runtime.getRuntime().availableProcessors();
Log.e(TAG, "no of processors = "+nrOfProcessors);
int[] sections = new int[nrOfProcessors+1];
createBitmapSections(nrOfProcessors,sections);
ExecutorService threadPool = Executors.newFixedThreadPool(nrOfProcessors);
for(int g=0; g<sections.length;g++){
Log.e(TAG, "++++++++++ sections= "+sections[g]);
}
//ExecutorService threadPool = Executors.newFixedThreadPool(nrOfProcessors);
Object[] task = new Object[nrOfProcessors];
for(int z = 0; z < nrOfProcessors; z++){
task[z]  = (FutureTask<PartialResult>) threadPool.submit(new PartialProcessing(sections[z], sections[z+1] - 1, input, k, z));
Log.e(TAG, "++++++++++ task"+z+"= "+task[z].toString()); 
}
PartialResult[] results = new PartialResult[nrOfProcessors];
try{
for(int t = 0; t < nrOfProcessors; t++){
results[t] = ((FutureTask<PartialResult>) task[t]).get();
results[t].fill(mArray);
}
}catch(Exception e){
e.printStackTrace();
}
Log.v("yoRESULT", "height width = "+ input.getHeight()+" "+input.getWidth());
Bitmap dst2 = Bitmap.createBitmap(mArray,input.getWidth(),input.getHeight(),input.getConfig());
return dst2;
}//end of barrel()
public class PartialResult {
int startP;
int endP;
int[] storedValues;
public PartialResult(int startp, int endp, Bitmap input){
this.startP = startp;
this.endP = endp;
this.storedValues = new int[input.getWidth()*input.getHeight()];
}
public void addValue(int p, int result) {
storedValues[p] = result;
}
public void fill(int[] mArray) {
Log.v("yo09", startP + " " + endP + " " + input.getWidth());
//yoko for (int p = startP; p < endP; p++){
for (int p = startP; p < endP+1; p++){
//for(int b=0;b<radius;b++,x++)
for(int b=0;b<input.getWidth();b++,x++) {
mArray[x] = storedValues[x];
if (b == 0) Log.v("yoyoyo", p+" + " + storedValues[x]);
}
} 
Log.e("yoFill", " ++++++++++ radius x = "+radius+" "+x);
}
}//end of partialResult
public class PartialProcessing implements Callable<PartialResult> {
int startJ;
int endJ;
int mID;
private int[] scalar;
private float xscale;
private float yscale;
private float xshift;
private float yshift;
private float thresh = 1;
private int [] s1;
private int [] s2;
private int [] s3;
private int [] s4;
private int [] s;
private Bitmap input;
private float k;
public PartialProcessing(int startj, int endj, Bitmap input, float k, int mID) {
this.startJ = startj;
this.endJ = endj;
this.input = input;
this.k = k;
this.mID = mID;
s = new int[4];
scalar = new int[4];
s1 = new int[4];
s2 = new int[4];
s3 = new int[4];
s4 = new int[4];
}
int [] getARGB(Bitmap buf,int x, int y){
int rgb = buf.getPixel(y, x); //Returns by default ARGB.
//int [] scalar = new int[4];
// scalar[0] = (rgb >>> 24) & 0xFF;
scalar[1] = (rgb >>> 16) & 0xFF;
scalar[2] = (rgb >>> 8) & 0xFF;
scalar[3] = (rgb >>> 0) & 0xFF;
return scalar;
}
float getRadialX(float x,float y,float cx,float cy,float k){
x = (x*xscale+xshift);
y = (y*yscale+yshift);
float res = x+((x-cx)*k*((x-cx)*(x-cx)+(y-cy)*(y-cy)));
return res;
}
float getRadialY(float x,float y,float cx,float cy,float k){
x = (x*xscale+xshift);
y = (y*yscale+yshift);
float res = y+((y-cy)*k*((x-cx)*(x-cx)+(y-cy)*(y-cy)));
return res;
}
float calc_shift(float x1,float x2,float cx,float k){
float x3 = (float)(x1+(x2-x1)*0.5);
float res1 = x1+((x1-cx)*k*((x1-cx)*(x1-cx)));
float res3 = x3+((x3-cx)*k*((x3-cx)*(x3-cx)));
if(res1>-thresh && res1 < thresh)
return x1;
if(res3<0){
return calc_shift(x3,x2,cx,k);
}
else{
return calc_shift(x1,x3,cx,k);
}
}
//void sampleImage(Bitmap mArray, float idx0, float idx1)
int [] sampleImage(Bitmap mArray2, float idx0, float idx1)
{
//s = new int [4];
if(idx0<0 || idx1<0 || idx0>(mArray2.getHeight()-1) || idx1>(mArray2.getWidth()-1)){
s[0]=0;
s[1]=0;
s[2]=0;
s[3]=0;
return s;//yoko
}
float idx0_fl=(float) Math.floor(idx0);
float idx0_cl=(float) Math.ceil(idx0);
float idx1_fl=(float) Math.floor(idx1);
float idx1_cl=(float) Math.ceil(idx1);
s1 = getARGB(mArray2,(int)idx0_fl,(int)idx1_fl);
s2 = getARGB(mArray2,(int)idx0_fl,(int)idx1_cl);
s3 = getARGB(mArray2,(int)idx0_cl,(int)idx1_cl);
s4 = getARGB(mArray2,(int)idx0_cl,(int)idx1_fl);
float x = idx0 - idx0_fl;
float y = idx1 - idx1_fl;
//s[0]= (int) (s1[0]*(1-x)*(1-y) + s2[0]*(1-x)*y + s3[0]*x*y + s4[0]*x*(1-y));
s[1]= (int) (s1[1]*(1-x)*(1-y) + s2[1]*(1-x)*y + s3[1]*x*y + s4[1]*x*(1-y));
s[2]= (int) (s1[2]*(1-x)*(1-y) + s2[2]*(1-x)*y + s3[2]*x*y + s4[2]*x*(1-y));
s[3]= (int) (s1[3]*(1-x)*(1-y) + s2[3]*(1-x)*y + s3[3]*x*y + s4[3]*x*(1-y));
return s;
}
@Override
public PartialResult call() {
PartialResult partialResult = new PartialResult(startJ, endJ,input);
float centerX=input.getWidth()/2; //center of distortion
float centerY=input.getHeight()/2;
int width = input.getWidth(); //image bounds
int height = input.getHeight();
xshift = calc_shift(0,centerX-1,centerX,k);
float newcenterX = width-centerX;
float xshift_2 = calc_shift(0,newcenterX-1,newcenterX,k);
yshift = calc_shift(0,centerY-1,centerY,k);
float newcenterY = height-centerY;
float yshift_2 = calc_shift(0,newcenterY-1,newcenterY,k);
xscale = (width-xshift-xshift_2)/width;
yscale = (height-yshift-yshift_2)/height;
//yoko int p = startJ*radius;
int p = startJ*width;//yoko
int origPixel = 0;
int color = 0;
int i;
Log.v("yokoIJ","PartialResult startJ endJ "+startJ+"  "+endJ);
//yoko for (int j = startJ; j <  endJ; j++){
for (int j = startJ; j <  endJ+1; j++){
for ( i = 0; i < width; i++, p++){
s = new int [4];//yoko added
origPixel = input.getPixel(i,j);
float x = getRadialX((float)j,(float)i,centerX,centerY,k);
float y = getRadialY((float)j,(float)i,centerX,centerY,k);
//sampleImage(input,x,y); //yoko
s= sampleImage(input,x,y);
color = (0xff<<24)|((s[1]&0x0ff)<<16)|((s[2]&0x0ff)<<8)|(s[3]&0x0ff);
//Log.e(TAG, "radius = "+radius);
//Not understand why it is not radius but radius/2
//yoko if(((i-centerX)*(i-centerX) + (j-centerY)*(j-centerY)) <= radius*(radius/4)){
if(((i-centerX)*(i-centerX) + (j-centerY)*(j-centerY)) <= radius*radius){
//yo if(j%10 == 1 && i%10 == 1)
//yo Log.v("yoJI", mID+" "+j + " " + i );
partialResult.addValue(p, color);
}else{
partialResult.addValue(p, origPixel);
}
}//end of inner for
}//end of outer for
return partialResult;
}//end of call
}//end of partialprocessing
}//end of MultiProcesorFilter

---

//2. Filters.java:

class Filters{
float xscale;
float yscale;
float xshift;
float yshift;
int [] s;
private static String TAG = "Filters";
public Filters(){
Log.e(TAG, "***********inside constructor");
}
public Bitmap barrel (Bitmap input, float k, boolean check, int Range){
Log.e(TAG, "***********inside barrel method : hasAlpha = ");
float centerX=input.getWidth()/2; //center of distortion
float centerY=input.getHeight()/2;
int width = input.getWidth(); //image bounds
int height = input.getHeight();
//yoko        Log.v("yoQQ", width+" "+height+" "+centerX+" "+centerY);
if(check)return input;
Bitmap dst = Bitmap.createBitmap(width, height,input.getConfig() ); //output pic
Log.e(TAG, "***********dst bitmap created ");
xshift = calc_shift(0,centerX-1,centerX,k);
float newcenterX = width-centerX;
float xshift_2 = calc_shift(0,newcenterX-1,newcenterX,k);
yshift = calc_shift(0,centerY-1,centerY,k);
float newcenterY = height-centerY;
float yshift_2 = calc_shift(0,newcenterY-1,newcenterY,k);
xscale = (width-xshift-xshift_2)/width;
yscale = (height-yshift-yshift_2)/height;
Log.e(TAG, "***********about to loop through bm");
Log.v("yoQQ2", xscale + " " + yscale);
//if(check==1)return input;//yoko
/*for(int j=0;j<dst.getHeight();j++){
for(int i=0;i<dst.getWidth();i++){
float x = getRadialX((float)i,(float)j,centerX,centerY,k);
float y = getRadialY((float)i,(float)j,centerX,centerY,k);
sampleImage(input,x,y);
int color = ((s[1]&0x0ff)<<16)|((s[2]&0x0ff)<<8)|(s[3]&0x0ff);
//           System.out.print(i+" "+j+" \\");
dst.setPixel(i, j, color);
}
}*/
int origPixel; //the pixel in orig image
int i=0,j=0;
for(j=0;j<dst.getHeight();j++){
for(i=0;i<dst.getWidth();i++){
s = new int [4];//yoko added
origPixel= input.getPixel(i,j);
float x = getRadialX((float)i,(float)j,centerX,centerY,k);
float y = getRadialY((float)i,(float)j,centerX,centerY,k);
//yoko sampleImage(input,x,y);
s = sampleImage(input,x,y);
//yoko int color = ((s[1]&0x0ff)<<16)|((s[2]&0x0ff)<<8)|(s[3]&0x0ff);
int color = (0xff<<24)|((s[1]&0xff)<<16)|((s[2]&0xff)<<8)|(s[3]&0xff);
//Log.v("yoQQ3", j + " " + i + " : "+dst.getHeight()+" "+dst.getWidth());
//check whether a pixel is within the circle bounds of 150
if( Math.sqrt( Math.pow(i - centerX, 2) + ( Math.pow(j - centerY, 2) ) ) <= Range ){
dst.setPixel(i, j, color);
//if(j%10 == 1 && i%10 == 1)
//   Log.v("yoJI", j + " " + i );
}else{
dst.setPixel(i,j,origPixel);
}
}
}
Log.v("yoDONE", "========  Loop End ======== "+j+" "+i+" : " + dst.getHeight()+" "+dst.getWidth());
return dst;
}//barrel
//   void sampleImage(Bitmap arr, float idx0, float idx1) //yoko
int[] sampleImage(Bitmap arr, float idx0, float idx1)
{
s = new int [4];
if(idx0<0 || idx1<0 || idx0>(arr.getHeight()-1) || idx1>(arr.getWidth()-1)){
s[0]=0;
s[1]=0;
s[2]=0;
s[3]=0;
return s;
}
float idx0_fl=(float) Math.floor(idx0);
float idx0_cl=(float) Math.ceil(idx0);
float idx1_fl=(float) Math.floor(idx1);
float idx1_cl=(float) Math.ceil(idx1);
int [] s1 = getARGB(arr,(int)idx0_fl,(int)idx1_fl);
int [] s2 = getARGB(arr,(int)idx0_fl,(int)idx1_cl);
int [] s3 = getARGB(arr,(int)idx0_cl,(int)idx1_cl);
int [] s4 = getARGB(arr,(int)idx0_cl,(int)idx1_fl);
float x = idx0 - idx0_fl;
float y = idx1 - idx1_fl;
s[0]= (int) (s1[0]*(1-x)*(1-y) + s2[0]*(1-x)*y + s3[0]*x*y + s4[0]*x*(1-y));
s[1]= (int) (s1[1]*(1-x)*(1-y) + s2[1]*(1-x)*y + s3[1]*x*y + s4[1]*x*(1-y));
s[2]= (int) (s1[2]*(1-x)*(1-y) + s2[2]*(1-x)*y + s3[2]*x*y + s4[2]*x*(1-y));
s[3]= (int) (s1[3]*(1-x)*(1-y) + s2[3]*(1-x)*y + s3[3]*x*y + s4[3]*x*(1-y));
return s;///yoko added to make return the result value
}//sampleImage
int [] getARGB(Bitmap buf,int x, int y){
int rgb = buf.getPixel(y, x); //Returns by default ARGB.
int [] scalar = new int[4];
scalar[0] = (rgb >>> 24) & 0xFF;
scalar[1] = (rgb >>> 16) & 0xFF;
scalar[2] = (rgb >>> 8) & 0xFF;
scalar[3] = (rgb >>> 0) & 0xFF;
return scalar;
}//getARGB
float getRadialX(float x,float y,float cx,float cy,float k){
x = (x*xscale+xshift);
y = (y*yscale+yshift);
float res = x+((x-cx)*k*((x-cx)*(x-cx)+(y-cy)*(y-cy)));
return res;
}//getRadial1X
float getRadialY(float x,float y,float cx,float cy,float k){
x = (x*xscale+xshift);
y = (y*yscale+yshift);
float res = y+((y-cy)*k*((x-cx)*(x-cx)+(y-cy)*(y-cy)));
return res;
}//getRadialY
float thresh = 1;
float calc_shift(float x1,float x2,float cx,float k){
float x3 = (float)(x1+(x2-x1)*0.5);
float res1 = x1+((x1-cx)*k*((x1-cx)*(x1-cx)));
float res3 = x3+((x3-cx)*k*((x3-cx)*(x3-cx)));
if(res1>-thresh && res1 < thresh)
return x1;
if(res3<0){
return calc_shift(x3,x2,cx,k);
}
else{
return calc_shift(x1,x3,cx,k);
}
}//calc_shift
}

Et
//3 MainActivity.java raison, le système de classe.

public class MainActivity extends Activity {
ImageView iv1=null;
ImageView iv2=null;
Button bT, bB, b0;
Bitmap bitmap1, bitmap2, bitmapSP;
Boolean view1 = true;
private static final String TAG = "*********jjil";
public static int mH,mW,RADIUS;
@Override 
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.activity_main);
Resources res = this.getResources();
//bitmap1 = BitmapFactory.decodeResource(res, R.drawable.checkerboard);
bitmap1 = BitmapFactory.decodeResource(res, R.drawable.checkerboardback);
mH=bitmap1.getHeight();
mW=bitmap1.getWidth();
RADIUS = mH/3;
bT = (Button)findViewById(R.id.buttontoggle);
bT.setOnClickListener(onClickToggleView);
bB = (Button)findViewById(R.id.buttonbarrel);
bB.setOnClickListener(onClickToggleView);
b0 = (Button)findViewById(R.id.button0);
b0.setOnClickListener(onClickToggleView);
iv1=(ImageView)findViewById(R.id.touchview1);
iv1.setImageBitmap(bitmap1);
iv1.setVisibility(View.VISIBLE);
}//end of oncreate
public View.OnClickListener onClickToggleView = new View.OnClickListener() {
public void onClick(View v) {
if (v == bT) {
///fromhere
new AsyncTask<Void, Void, String>() {
com.example.owner.opengl2.Filters mFilers = new com.example.owner.opengl2.Filters();
TextView tx = (TextView)findViewById(R.id.mStatus);
Bitmap bitmapSP;long start,end;
protected void onPreExecute() {
start = System.nanoTime();
iv1.setImageBitmap(bitmap1);
tx.setText("- Running -");
}
protected String doInBackground(Void... params) {
bitmapSP = mFilers.barrel(bitmap1,(float)0.00005,false,RADIUS);
return "message";
}
protected void onPostExecute(String msg) {
end = System.nanoTime();
long elapsedTime = end - start;
long seconds = elapsedTime /1000000;
iv1.setImageBitmap(bitmapSP);
tx.setText("- READY : ElapsedTime(ms) = "+seconds);
//Post Code
//Use `msg` in code
}
}.execute();
///upto here
} else if (v == bB){
///fromhere
new AsyncTask<Void, Void, String>() {
com.example.owner.opengl2.MultiRuntimeProcessorFilter mFilers = new com.example.owner.opengl2.MultiRuntimeProcessorFilter();
TextView tx = (TextView)findViewById(R.id.mStatus);
Bitmap bitmapSP;long start,end;
protected void onPreExecute() {
start = System.nanoTime();
iv1.setImageBitmap(bitmap1);
tx.setText("- Running -");
}
protected String doInBackground(Void... params) {
bitmapSP = mFilers.barrel(bitmap1,(float)0.00005,RADIUS);
return "message";
}
protected void onPostExecute(String msg) {
end = System.nanoTime();
long elapsedTime = end - start;
//double seconds = (double)elapsedTime /1000000000.0;
long seconds = elapsedTime /1000000;
iv1.setImageBitmap(bitmapSP);
tx.setText("- READY : ElapsedTime(ms) = "+seconds);
//Post Code
//Use `msg` in code
}
}.execute();
} else if (v == b0){
new AsyncTask<Void, Void, String>() {
protected String doInBackground(Void... Unused) {
return "OK";
}
protected void onPostExecute(String message) {
Log.v("YO", "---------------------------------");
Log.v("YO", "----------ORIGINAL SHAPE-------- "+message);
Log.v("YO", "---------------------------------");
iv1.setImageBitmap(bitmap1);
TextView tx = (TextView)findViewById(R.id.mStatus);
tx.setText("- READY : w h RADIUS = "+mW+" "+mH+" "+RADIUS);
}
}.execute();
}
///upto here
}
};

}

Ici est un fichier XML
//4 activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:orientation="vertical"
android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">
<LinearLayout
android:id="@+id/buttons"
android:layout_centerHorizontal="true"
android:layout_alignParentTop="true"
android:orientation="horizontal"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<Button
android:id="@+id/buttontoggle"
android:text="Barrel 1P"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<Button
android:id="@+id/buttonbarrel"
android:text="Barrele NP"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<Button
android:id="@+id/button0"
android:text="ORIGINAL"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
<TextView
android:id="@+id/mStatus"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text=" - Ready - "
android:textAppearance="?android:attr/textAppearanceSmall"
android:layout_below="@+id/buttons"
android:layout_centerHorizontal="true"
/>
<ImageView
android:id="@+id/touchview1"
android:layout_below="@+id/mStatus"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_centerHorizontal="true"
/>
<!--ImageView
android:id="@+id/touchview2"
android:layout_below="@+id/touchview1"
android:layout_alignParentBottom="true"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_centerHorizontal="true" /-->