The improved Robert was used in the paper to outline the knot-hole so that the processing was almost on real time.
考虑到实际处理时的实时要求,应用改进后的罗泊特梯度算子来提取漏节的轮廓,使处理时间大大缩短。
2
If your hole ends up being a bit too big and the knots themselves don't hold the yarn in place, then tug on the yarn ends and stick some Popsicle sticks under the main knot to secure in place.