这个方法有两个好处。

（ a ）虽然只是一个半径差逼近，很容易找到最高在一个小蓄电池，因为通过降低 隐平滑做的蓄电池。（ b ）在同一时间处理时间搜索减少

-Pattern Recognition and Image Procesing Group.

The size of the accumulator is varied as hierarchical voting is performed. This

has two advantages.

[a] While the radius is only a poor approximation, it is easier to find the maximum

in a small accumulator and because by means of the downsampling

implicit smoothing is done to the accumulator.

[b] At the same time processing time for the search is reduced.