Dilated-aware discriminative correlation filter for visual tracking

Abstract

Recent progress has witnessed continued attention in discriminative correlation filter (DCF) tracking algorithms due to its high-efficiency. However, the existing DCF inevitably introduces some cyclic repetitions in learning and detection, which might lead to the heavy drift problem encountered in significant appearance variants owing to occlusion, deformation and motion blur. In this paper, we propose a dilated-aware discriminative correlation filter framework for visual tracking, which fully exploits multi-scale receptive contextual information of correlation filter to mitigate the impact of unwanted boundary and model degradation. On the premise of nondestructive filtering structure, our method adopts a simple formulation based on Kronecker product over discriminative correlation filter. By hands of multiple dilated factors perceive the multi-level spatial receptive map on objects. The framework learns a reliable response map by the residual understanding of multiple factor-dilated correlations filters. Furthermore, experiment results in a recent comprehensive tracking benchmark demonstrate a promising performance of the proposed method subjectively and objectively compared with several state-of-the-art algorithms.