The effect of 3D structure on motion segmentation.
The effect of 3D structure on motion segmentation.
复制标题
3D结构对运动分割的影响。
DOI：
10.1016/s0042-6989(99)00201-1
复制
发表时间：
2000
期刊：
影响因子：
1.8
通讯作者：
Farid,H
中科院分区：
文献类型：
--
作者：
Bravo,MJ;Farid,H
在视网膜上成像的光滑表面会产生平滑的流场。因此，视觉系统可以将平滑变化的流量区域分组到片段表面。我们通过让观察者对几个刺激执行分割任务来测试这个想法，这些刺激在3D解释上不同，但在2D流场的平滑度上都是匹配的。不同条件下的表现不同，当刺激模拟刚性平面时表现最佳。这一结果表明，虽然观察者可能会使用平滑度的偏差来分割广泛的运动刺激，但他们使用更精确的策略来分割熟悉的3D解释的刺激。
A smooth surface imaged on the retina produces a smooth flow field. Thus, the visual system may group regions of smoothly varying flow to segment surfaces. We tested this idea by having observers perform a segmentation task on several stimuli that differed in their 3D interpretations but were all matched in the smoothness of their 2D flow fields. Performance varied across conditions with the best performance occurring when the stimulus simulated a rigid plane. This result suggests that while observers may use deviations from smoothness to segment a broad class of motion stimuli, they use a more precise strategy to segment stimuli with a familiar 3D interpretation.