检测复杂自然的视觉突出元素场景，计算自下而上的显着性模型通常会检查几个特征频道，如颜色和方向并行。他们计算出一个为每个通道单独分配功能图，然后线性分配结合这些地图生成主显着图。但是，只有少数研究调查了如何不同的特征尺寸有助于整体视觉显着性。 论文：Visual saliency estimation by nonlinearly integrating features using region covariances
chan算法CHAN AND HO: A SIMPLE AND EFFICIENT ESTIMATOR FOR HYPERBOLIC LOCATION SYSTEM
y=yo. In the next iteration, Io and yo are then set to o+A where
and yo +Ay. The whole process is repeated again until A and
Ay are sufficiently small. This method has
