The visibility of the paths was determined by pixel similarity, neighboring difference and the direction of the edges synthetically, which made the ants move along the real edge pixels.

综合考虑了像素间相似性、邻域差和边缘走向三个因素来确定启发式引导函数，使蚂蚁沿着真正的边缘行走。

youdao

So if liability insurance was required of every dealer in the state and neighboring states, it could make a difference.

FORBES: The Myth of Gun Liability Insurance