PVector Array & SimpleOpenNI + Kinect

beedot

PVector Array & SimpleOpenNI + Kinect

in Contributed Library Questions • 3 months ago

Hi there , I am using the SimpleOpenNI library for processing, in conjunction with the Kinect hardware. I am trying to recreate this effect:

I can create vertical gaps in the point cloud by changing the number in the update portion of the array [ for (int i = 0; i < depthPoints.length; i+=5) ] .

Rather, I would like to create horizontal gaps within the point cloud, but I'm not sure how to write the code to ignore chunks of the array in this way.

CURRENT CODE:

import processing.opengl.*;
import SimpleOpenNI.*;
SimpleOpenNI kinect;
void setup() {
size(1024, 768, OPENGL);
kinect = new SimpleOpenNI(this);
kinect.enableDepth();
}
void draw() {
background(0);
kinect.update();
translate(width/2, height/2, 0);
rotateX(radians(180));
stroke(255);
strokeWeight(1);
PVector[] depthPoints = kinect.depthMapRealWorld();
for (int i = 0; i < depthPoints.length; i+=5)
{
PVector currentPoint = depthPoints[i];
point(currentPoint.x, currentPoint.y, currentPoint.z);
}
}

If anyone has any tips or advice on how to achieve this effect it would be greatly appreciated!

Replies(2)

GoToLoop

Re: PVector Array & SimpleOpenNI + Kinect

3 months ago

How about something like snippet?

final PVector[] rows = kinect.depthMapRealWorld();

for (int i = 0; i < rows.length; i += 5) {
  final PVector p = rows[i];
  if ( round(p.x) % 5 == 0 )   point(p.x, p.y, p.z);
}

beedot

Re: PVector Array & SimpleOpenNI + Kinect

3 months ago

thanks for the reply GoToLoop, I think that is the right direction!

getting close... except I'm getting a wierd circular artifacting that seems to happen on anything with a contour, making it hard to discern the edges of objects. (In the screenshot below you can see that the lines on the sheet of paper I am holding up are consistent, while the lines on my shirt and head seem to be artifacted.)

final PVector[] rows = kinect.depthMapRealWorld();
for (int i = 0; i < rows.length; i++) {
final PVector p = rows[i];
if (round(p.y) % 40 == 0){
point(p.x, p.y, p.z);
}
}

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