Schyns P G, Oliva A
Department of Psychology, University of Glasgow, UK.
Perception. 1997;26(8):1027-38. doi: 10.1068/p261027.
Different classifications of an identical visual stimulus may require different perceptual properties from the visual input. How do processes of object and scene categorisation use the information associated with different perceptual spatial scales? One scenario suggests that recognition should use coarse blobs before fine-scale edges because scale usage is perceptually determined. However, perceptual determination neglects one important aspect of any recognition task: the information demands of the considered classification of the input. Evidence is reviewed suggesting that scale usage could be flexibly determined by the diagnosticity of scale-specific cues for different categorisations of scenes and faces.
对相同视觉刺激的不同分类可能需要视觉输入具备不同的感知属性。物体和场景分类过程是如何利用与不同感知空间尺度相关的信息的呢？一种观点认为，识别应该先使用粗略的色块，再使用精细尺度的边缘，因为尺度的使用是由感知决定的。然而，感知决定忽略了任何识别任务的一个重要方面：所考虑的输入分类的信息需求。本文回顾了相关证据，表明尺度的使用可能由针对场景和面部不同分类的特定尺度线索的诊断性灵活决定。
