limiting object tracking scan to selected area?

[BhavitChhatralia]

Trying to limit the area of object tracking tracker so the select tracker only scans in a specified place e.g. a persons mouth.

A place holder is put in place for the person to place their face within a selected area, once within this place holder i want the object tracker to only scan a predefined area to limit the hardware stress, and prevent fps from dropping, as currently using custom haar data the fps is at 1-2.

[BhavitChhatralia]

addtionally is it possible to select the object size for the object tracker?

[BhavitChhatralia]

Alternatively is there a way to crop the camera stream, send this to the object tracker, track objects on the cropped stream and then place rects on the canvas of the camera stream?

[BhavitChhatralia]

okay so have limitied tracking to a selected area, however now i'm having a issue with getting the violajones rect array return drawn in the correct position.

[BhavitChhatralia]

tracking.trackCanvasInternal_ = function(element, tracker) { var width = element.width; var height = element.height; var context = element.getContext('2d'); if(tracker.classifiers[0].length===33871){ var imageData = context.getImageData((canvas.width/2 - (500/2)), (canvas.height/2 - (600/2)), 500, 600); tracker.track(imageData.data,500,600);//(canvas.width/2 - (500/2)),(canvas.height/2 - (600/2))); //tracker.track(imageData.data,width,height); } var imageData = context.getImageData((canvas.width/2 - (300/2)), 500, 300, 120); //0, 0, width, height tracker.track(imageData.data, 300, 120);//300,120 deafult is width,height }; For anyone that's wondering how, this is the modified code in the tracking.js line 187 to 198

[BhavitChhatralia]

SOLVED!