first pass of the flob engine.
revised in version 001l to allow different color channel tracking.
transforms the input image in a black and white only image (binary image).
optionally insert a fastblur in the image.
calling the constructor with a PApplet, PImage, yourWidth, yourHeight parameters inits the image vars
yourWidth will be default coords return on flob for each blob's x pos, the same for height
set the videotex returned by flob.videotex
case 0: videotex = videoimg; break;
case 1: videotex = videotexbin; break;
case 2: videotex = videotexmotion; break;
case 3: videotex = videoteximgmotion; break;