Dorr Michael, Gegenfurtner Karl R, Barth Erhardt
Institute for Neuro- and Bioinformatics, University of Lübeck, Ratzeburger Allee 160, 23538 Lübeck, Germany.
Vision Res. 2009 Dec;49(24):2918-26. doi: 10.1016/j.visres.2009.09.007. Epub 2009 Sep 16.
Does it matter what observers are looking at right now to determine where they will look next? We recorded eye movements and computed colour, local orientation, motion, and geometrical invariants on dynamic natural scenes. The distributions of differences between features at successive fixations were compared with those from random scanpaths of varying similarity to natural scanpaths. Although distributions show significant differences, these feature correlations are mainly due to spatio-temporal correlations in natural scenes and a target selection bias, e.g. towards moving objects. Our results indicate that low-level features at fixation contribute little to the choice of the next saccade target.
观察者当前注视的内容对于确定他们接下来会看向哪里有影响吗？我们记录了眼动，并计算了动态自然场景中的颜色、局部方向、运动和几何不变量。将连续注视点处特征之间的差异分布与来自与自然扫描路径相似度不同的随机扫描路径的差异分布进行比较。尽管分布显示出显著差异，但这些特征相关性主要是由于自然场景中的时空相关性和目标选择偏差，例如对移动物体的偏好。我们的结果表明，注视点处的低级特征对下一个扫视目标的选择贡献不大。
