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making JMyron mirror imaged (Read 1249 times)
dwestart
making JMyron mirror imaged
Jan 2nd, 2009, 10:12pm  
How do you make Jmyron output a mirror image?
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Goju-Ryu
Re: making JMyron mirror imaged
Reply #1 - Jan 3rd, 2009, 12:54pm  
Hello!

Something like this should do what you want...

m.update();
 int[] imgNormal = m.cameraImage();
 
 this.loadPixels();
 for(int i=1; i<width;i++){
   for(int j=1;j<height;j++){
     this.pixels[(m.width() - i - 1) + j * m.width()] = imgNormal[(i) + j * m.width()];
   }
 }
 this.updatePixels();
 
 
 arraycopy(m.cameraImage(),img.pixels);
 img.updatePixels();
 
 image(img,0,0);
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dwestart
Re: making JMyron mirror imaged
Reply #2 - Jan 3rd, 2009, 8:36pm  
Thanks Goju-Ryu, but I can't plug it in without getting a "double image." Below is the project I am working on based on the myron "pixelfun." Any suggestions will be appreciated.


import JMyron.*;

JMyron m;

void setup(){
 size(1024,640);
 
 
 m = new JMyron();
 m.start(width,height);
 m.findGlobs(0);
 
 rectMode(CENTER);
 
}

void draw(){
 background(255);
 m.update();
 int[] img = m.image();
 
 for(int y=0;y<height;y+=6){
   for(int x=0;x<width;x+=9){
     float av = (red(img[y*width+x]))/2.0;

     fill(red(img[y*width+x]));
     
     pushMatrix();
     rotate(av/6000.0);
     translate(x,y);
     rect(0,0,(25-av)/5.0,(25-av)/5.0);
     popMatrix();
   }
 }
}
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pd
Re: making JMyron mirror imaged
Reply #3 - Apr 5th, 2010, 10:47am  
I've been trying to achieve the same - create mirror output - while using Myron & the differencing eg... to no avail. Am also somewhat new to processing. Have you found a solution to this? Anyone else?
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pd
Re: making JMyron mirror imaged
Reply #4 - Apr 7th, 2010, 8:45am  
figured something out m'self ; here is the solution that is working for me:

Code:

//init array for recording difference image (btwn prior & current frames)
//ext lib function : returns the difference image
//get the normal image of the camera

  int[] img = m.differenceImage(); 
  loadPixels();
  
//cycle through all the pixels and add the frame's pixels to screen
 //to take a 1d array that is counting in rows/width and find the 2d x,y coord's
 //creating mirror reflection : turn all pixels on x axis backward
//draw all differencing pixels to screen on both the x, y axis'


 for(int i = 0; i < width*height; i++){ 
    int y=i/width;
    int x=i%width;  
    x=width-x-1; 
    pixels[i] = img[y*width+x]; 
  }
     println("x=" + x);
 
//processing command that updates the display window with the data in the pixels[] array). 

    updatePixels();
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