Kunal Narayan Chaudhury, Daniel Sage, Michael Unser
TL;DR本文研究探讨了如何利用三角函数 range kernels 实现双边滤波器的常数时间运算, 提高空间平均计算的计算效率。
Abstract
It is well-known that spatial averaging can be realized (in space or frequency domain) using algorithms whose complexity does not depend on the size or shape of the filter. These fast algorithms are generally referred to as constant-time or O(1) algorithms in the image processing liter