Translate Java to C code
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Thread: Translate Java to C code

  1. #1
    Join Date
    Nov 2011
    Posts
    7

    Question Translate Java to C code

    Hey, fellas i recently found this code which is a java implementation for a silhouette extraction algorithm from depth video (it is using kinect and openCV library). I was wondering if can anyone help me out to translate it to simple c code (without the kinect and openCV library). Thank you all in advance. May the force be with you.


    import hypermedia.video.*; // Imports the OpenCV library
    import processing.video.*;
    import org.openkinect.*;
    import org.openkinect.processing.*;

    MovieMaker mm;
    Kinect kinect;
    OpenCV opencv; // Creates a new OpenCV Object
    PrintWriter pw = null;

    PImage depth,copia;
    PImage img;
    int x=-10,y=-35;
    void simplify(PVector[] d, float tol,int s, int e, boolean[] out) {
    out[s]=out[e]=true;
    if(abs(s-e)<=1) return;
    float distance,area, m=0.0;
    int who=-1;
    PVector a = d[s];
    PVector b = d[e];
    PVector c = null;
    for(int i=s+1;i<e;i++) {
    c=d[i];
    area=abs(a.x*b.y+b.x*c.y+c.x*a.y - b.x*a.y-c.x*b.y-a.x*c.y);
    distance = area/a.dist(b);
    if(distance>m && distance>tol) {
    m=distance;
    who=i;
    }
    }
    if(who==-1) return;
    simplify(d,tol,s,who,out);
    simplify(d,tol,who,e,out);
    }

    void setup() {
    String filename = sketchPath("out.txt");
    try {pw = new PrintWriter(new FileOutputStream(filename));} catch(Exception e) {println("FNFE"); }
    size( 640, 480 );
    depth = createImage(640,480,RGB);
    img = createImage(640,480,RGB);
    copia = createImage(640,480,RGB);
    kinect = new Kinect(this);
    kinect.start();
    kinect.enableDepth(true);
    kinect.enableRGB(true);
    // mm = new MovieMaker(this, width, height, "silueta.mov");
    opencv = new OpenCV( this );
    }


    void draw() {
    background(0);
    int histo[] = new int[256];
    img = kinect.getRGBImage();
    //img.updatePixels();
    // opencv.loadImage( "depth.png",width, height ); // Opens a video capture stream
    opencv.allocate(640,480);
    //opencv.read();
    //image( opencv.image(), 0, 0 ); // Displays the image in the OpenCV buffer to the screen

    //depth.pixels = NativeKinect.getDepthMap();
    depth = kinect.getDepthImage();
    copia=depth.get();
    for(int i=0;i<640*480;i++) { histo[int(brightness(depth.pixels[i]))]++;
    if(brightness(copia.pixels[i])>=135 && brightness(copia.pixels[i])<=140) /* copia.pixels[i]=color(200) */ ; else copia.pixels[i]=color(0);
    }
    //depth.updatePixels();
    opencv.copy(copia);
    image(img,x,y);
    stroke(255);

    Blob[] blobs = opencv.blobs( 15000, width*height/2, 100, true, OpenCV.MAX_VERTICES*4 );

    if( blobs.length>0) {
    PVector[] d = new PVector[blobs[0].points.length];
    for( int j=0; j<blobs[0].points.length; j++ ) {
    d[j]=new PVector(blobs[0].points[j].x,blobs[0].points[j].y);
    }

    boolean out[] = new boolean[blobs[0].points.length];

    simplify(d,5,0,blobs[0].points.length-1,out);


    stroke(250,0,0);
    //background(0);
    int i=0;
    strokeWeight(2);
    noFill();
    beginShape();
    for( int j=0; j<blobs[i].points.length; j++ ) {
    if(out[j]==true) {
    vertex( blobs[i].points[j].x, blobs[i].points[j].y );
    pw.print(blobs[i].points[j].x +" "+ blobs[i].points[j].y + " ");
    }
    }
    endShape(CLOSE);
    pw.println();
    // mm.addFrame();

    }
    }
    /*
    void keyPressed() {
    if (key == ' ') {
    // Finish the movie if space bar is pressed
    // mm.finish();
    // Quit running the sketch once the file is written
    exit();
    }
    }
    */

    void stop() {
    kinect.quit();
    super.stop();
    }

    void keyPressed() {
    if (key == 'd') {
    x--;

    }
    else if (key == 'r') {
    y--;
    }
    println (x+","+y);

    if (key == ' ') {
    // Finish the movie if space bar is pressed
    // mm.finish();
    // Quit running the sketch once the file is written
    exit();
    }
    }

  2. #2
    Join Date
    May 2009
    Posts
    2,413

    Re: Translate Java to C code

    Quote Originally Posted by chezmark View Post
    May the force be with you.
    The best force in this case is money. Contact a consulting firm and offer to pay what it costs to get this job done for you.

  3. #3
    Join Date
    Nov 2011
    Posts
    189

    Re: Translate Java to C code

    what the hell... Does C have the potency to do that? Siluette detection might be a little too advanced

  4. #4
    Join Date
    May 2006
    Location
    UK
    Posts
    4,474

    Re: Translate Java to C code

    Does C have the potency to do that?
    Actually, you can write pretty much anything in C if you have the skill - that and it's execution speed is why it became so popular. The problem is you can also do an awful lots of things that you shouldn't be allowed to do which is why C programs are so prone to bugs.
    Posting code? Use code tags like this: [code]...Your code here...[/code]
    Click here for examples of Java Code

  5. #5
    Join Date
    Nov 2011
    Posts
    189

    Re: Translate Java to C code

    haha...*cough* goto *cough*

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