blobs = Detector.getBlobsInCanvas(canvas)
blobs = Detector.getBlobs(imageData, threshold)
for (var i = 0; i < blobs.length; i++) {
ctx.fillRect(blobs[i].minX, blobs[i].minY, blobs[i].width, blobs[i].height)
};
blobs = Detector.getBlobsInCanvas(canvas)
blobs = Detector.getBlobs(imageData, threshold)
for (var i = 0; i < blobs.length; i++) {
ctx.fillRect(blobs[i].minX, blobs[i].minY, blobs[i].width, blobs[i].height)
};