[ SM3117 ] - [ Class 12 ] - WebCamXtra

Class 12 - Image Tracking Workshop - WebCamXtra tracking

 

1

Revisit the use of 4 different images in webcamxtra

  • cameraImage
  • retinaImage
  • DifferenceImage
  • GlobsImage

Sample movie

 

2

Adapt

member("webcam").adapt();

to copy the current cameraImage onto the retinaImage.

Sample movie

 

3

Adaptivity

  • member("webcam").adaptivity = 0;
  • member("webcam").adaptivity = 1;
  • member("webcam").adaptivity = 10;

The rate at which the retinaImage adapts to the cameraImage. The larger the number, the longer it takes to adapt.

Sample movie

 

4

Sensitivity

  • member("webcam").sensitivity = 0.0;
  • member("webcam").sensitivity = 0.5;
  • member("webcam").sensitivity = 0.9;

It is a number between 0 and 1 which indicates the threshold just between white and black.

Sample movie

 

5

MinDensity

  • member("webcam").minDensity = 100;

Minimum number of pixels an area to be recognized.

Sample movie