kinect separating overlapping blobs based on depth

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ltsblu

kinect separating overlapping blobs based on depth

in General Discussion • Other • 1 year ago

I would like to know if anyone has an efficient method for separating overlapping blobs based on depth values from the kinect. Background subtraction and depth limiting to find blobs is fairly straightforward, however if two blobs overlap, but are at different distances, I would like to separate them. What might be a good approach to accomplish this? some type of edge detection perhaps?

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Sergio Pa..

Re: kinect separating overlapping blobs based on depth

1 year ago

You could use the pixel distance to check if they are on the same "plane". Here is a sample that will allow you to see the distance of a pixel.

import SimpleOpenNI.*;
SimpleOpenNI kinect;
void setup()
{
size(640, 480);
kinect = new SimpleOpenNI(this);
kinect.enableDepth();
}
void draw()
{
kinect.update();
PImage depthImage = kinect.depthImage();
image(depthImage, 0, 0);
}
void mousePressed(){
int[] depthValues = kinect.depthMap();
int clickPosition = mouseX + (mouseY * 640);
int clickedDepth = depthValues[clickPosition];
float inches = clickedDepth / 25.4;
println("milimeters: " + clickedDepth);
}

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