Currently, only 250 candidate nodes are being selected in each frame, and the rest is thrown away.
What actually should be done is 250 candidate nodes should be placed up in the priority queue, and only nodes at a distance >= 72 from positive patches should be discarded.
In "LiveSketch" they seem to be doing exactly that though: select a few candidates and disregard the rest. However, they might just be omitting some details.
Currently, only 250 candidate nodes are being selected in each frame, and the rest is thrown away.
What actually should be done is 250 candidate nodes should be placed up in the priority queue, and only nodes at a distance >= 72 from positive patches should be discarded.