Top-down modulated model for object recognition in different categorisation levels. (24th August 2021)

• Record Type: Journal Article
• Authors: Sharifizadeh, Fatemeh; Ganjtabesh, Mohammad; Nowzari-Dalini, Abbas
• Is Part Of: International journal of bio-inspired computation. Volume 18:Number 1(2021)
• Page Start: 13
• Page End: 26
• Publication Date: 2021-08-24
• Subjects: object recognition -- categorisation levels -- computational models -- bottom-up processing -- top-down signals; Biologically-inspired computing -- Periodicals; Computational biology -- Periodicals; 572.0285
• Languages: English
• ISSNs: 1758-0366

Abstract

The human visual system contains a hierarchical sequence of modules that take part in visual perception at superordinate, basic, and subordinate categorisation levels. The top-down signals facilitate the bottom-up processing of visual information in the cortical analysis of object recognition. We propose a novel computational model for object recognition in different categorisation levels, which mimics the effects of top-down signals in the hierarchical processing of the visual system. The top-down signal is incorporated in bottom-up processing of input image to increase the biological plausibility of our model as well as its efficiency for the object recognition in different categorisation levels. The top-down signals provide a pre-knowledge about the input space, which can help to solve the complex object recognition tasks. The performance of our model is evaluated by various appraisal criteria with three benchmark datasets and significant improvement in recognition accuracy of our proposed model is achieved in all experiments.