Kinect infra image not showing - why? - processing

Question

I have installed openni2.2, nite2.2 and kinect SDK 1.6 along with Simpleopenni library for processing. Everything working fine except infrared image - it is simply not there. That is really strange since at the same time I can clearly see the depth image (and depthimage logically need the infra camera and projector working to run). So I assume there is a problem with drivers or software? I would like to use kinect as infrared camera. Please help, below I attach my test code:
/* --------------------------------------------------------------------------
* SimpleOpenNI IR Test
* --------------------------------------------------------------------------
* Processing Wrapper for the OpenNI/Kinect library
* http://code.google.com/p/simple-openni
* --------------------------------------------------------------------------
* prog: Max Rheiner / Interaction Design / zhdk / http://iad.zhdk.ch/
* date: 02/16/2011 (m/d/y)
* ----------------------------------------------------------------------------
*/
import SimpleOpenNI.*;
SimpleOpenNI context;
void setup()
{
context = new SimpleOpenNI(this);
// enable depthMap generation
if(context.enableDepth() == false)
{
println("Can't open the depthMap, maybe the camera is not connected!");
exit();
return;
}
// enable ir generation
if(context.enableIR() == false)
{
println("Can't open the depthMap, maybe the camera is not connected!");
exit();
return;
}
background(200,0,0);
size(context.depthWidth() + context.irWidth() + 10, context.depthHeight());
}
void draw()
{
// update the cam
context.update();
// draw depthImageMap
image(context.depthImage(),0,0);
// draw irImageMap
image(context.irImage(),context.depthWidth() + 10,0);
}

Answer 1

This does the job:
context.enableIR(1,1,1);

Answer 2

I have the exact same issue.
It's not a solution but the closest I can get to getting an infra-red image from the kinect is by getting the point cloud from the depth Image
That soltuion is here
import SimpleOpenNI.*;
import processing.opengl.*;
SimpleOpenNI kinect;
void setup()
{
size( 1024, 768, OPENGL);
kinect = new SimpleOpenNI( this );
kinect.enableDepth();
}
void draw()
{
background( 0);
kinect.update();
image(kinect.depthImage(),0,0,160,120);//check depth image
translate( width/2, height/2, -1000);
rotateX( radians(180));
stroke(255);
PVector[] depthPoints = kinect.depthMapRealWorld();
//the program get stucked in the for loop it loops 307200 times and I don't have any points output
for( int i = 0; i < depthPoints.length ; i+=4)//draw point for every 4th pixel
{
PVector currentPoint = depthPoints[i];
if(i == 0) println(currentPoint);
point(currentPoint.x, currentPoint.y, currentPoint.z );
}
}

Answer 3

Are you able to capture the infrared stream, but you just can't see it?
Then the issue might be RANGE (which it should be in [0, 255]).
I had this issue in Python and C++; I solved it by dividing the array by the range (max-min) and then multiply all entries by 255.

Answer 4

user3550091 is right!
For reference here is my complete working code (Processing+OpenNI):
import SimpleOpenNI.*;
SimpleOpenNI context;
void setup(){
size(640 * 2 + 10, 480);
context = new SimpleOpenNI(this);
if(context.isInit() == false){
println("fail");
exit();
return;
}
context.enableDepth();
// enable ir generation
//context.enableIR(); old line
context.enableIR(1,1,1); //new line
background(200,0,0);
}
void draw(){
context.update();
image(context.depthImage(),context.depthWidth() + 10,0);
image(context.irImage(),0,0);
}