BlobDetection library: Can it find light-colored blobs instead of only dark ones?

[glv]

Hello @m0nsterm0vi3 ,

This topic may be of interest to you:

How to use SPOUT input with 11.10: Computer Vision: Adding Lifespan to Blobs - Processing Tutorial

Hi, I am relatively new to Processing. I am trying to make the Blobtrack Persistance example (as seen in this video) work with Input from SPOUT receiver instead of the webcam input. Does anybody have an advice for me? Many thanks in advance, Marijn

@jamshark70

Should I assume, then, that filter(INVERT) only affects display but does not affect the image contents?

Is there a function that inverts the actual pixel values?

I adapted this example:
https://processing.org/reference/libraries/video/Capture.html

And this code (modify example above) will invert and display the image:

void draw() {
  if (cam.available() == true) {
    cam.read();
  }
  
  image(cam, 0, 0);
  
  PImage img = cam.copy();
  
  img.filter(INVERT);
  image(img, width/2, 0); // Moved it over
}

:)