Eberhardt Sven, Zetzsche Christoph, Schill Kerstin
Cognitive Neuroinformatics, University of Bremen, Bremen,
J Vis. 2016 Jan 1;16(2):14. doi: 10.1167/16.2.14.
The human visual system exhibits substantially different properties between foveal and peripheral vision. Peripheral vision is special in that it has to compress data onto fewer units by reduced visual acuity and larger receptive fields, yielding greatly reduced performance on many tasks such as object recognition. However, here we show that the pooling operations implemented by peripheral vision provide exactly the invariance properties required by a self-localization task. We test the effect of different pooling sizes, as well as acuity reduction, on localization, object recognition, and scene categorization tasks. We find that peripheral pooling, but not reduced acuity, affects localization performance positively, whereas it is detrimental to object recognition performance.
人类视觉系统在中央凹视觉和周边视觉之间表现出显著不同的特性。周边视觉很特别，因为它必须通过降低视敏度和增大感受野将数据压缩到更少的单元上，这使得在诸如目标识别等许多任务上的表现大幅降低。然而，我们在此表明，周边视觉所执行的池化操作恰好提供了自定位任务所需的不变性属性。我们测试了不同池化大小以及视敏度降低对定位、目标识别和场景分类任务的影响。我们发现，周边池化而非视敏度降低对定位性能有积极影响，而对目标识别性能则有不利影响。
