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Nat. Commun., Mar 05 2024, 15 (1) | https://doi.org/10.1038/s41467-024-45679-0
Improved modeling of human vision by incorporating robustness to blur in convolutional neural networks
Hojin Jang 1,2,3 & Frank Tong 1
1Department of Psychology, Vanderbilt Vision Research Center, Vanderbilt University, Nashville, TN, USA.
2Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA.
3Present address: Department of Brain and Cognitive Engineering, Korea University, Seoul, South Korea.
Corresponding authors : Correspondence to Hojin Jang or Frank Tong.
Abstract
Whenever a visual scene is cast onto the retina, much of it will appear degraded due to poor resolution in the periphery; moreover, optical defocus can cause blur in central vision. However, the pervasiveness of blurry or degraded input is typically overlooked in the training of convolutional neural networks (CNNs). We hypothesized that the absence of blurry training inputs may cause CNNs to rely excessively on high spatial frequency information for object recognition, thereby causing systematic deviations from biological vision. We evaluated this hypothesis by comparing standard CNNs with CNNs trained on a combination of clear and blurry images. We show that blur-trained CNNs outperform standard CNNs at predicting neural responses to objects across a variety of viewing conditions. Moreover, blur-trained CNNs acquire increased sensitivity to shape information and greater robustness to multiple forms of visual noise, leading to improved correspondence with human perception. Our results provide multi-faceted neurocomputational evidence that blurry visual experiences may be critical for conferring robustness to biological visual systems.
논문정보
- Research article
- 2024년 03월 (BRIC 등록일 2024-03-07)
- 국외 연구진
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