Deep Low-Resolution Person Re-Identification


  • Jiening Jiao Sun Yat-sen University
  • Wei-Shi Zheng Sun Yat-sen University
  • Ancong Wu Sun Yat-sen University
  • Xiatian Zhu Queen Mary University of London
  • Shaogang Gong Queen Mary University of London



Person images captured by public surveillance cameras often have low resolutions (LR) in addition to uncontrolled pose variations, background clutters and occlusions. This gives rise to the resolution mismatch problem when matched against the high resolution (HR) gallery images (typically available in enrolment), which adversely affects the performance of person re-identification (re-id) that aims to associate images of the same person captured at different locations and different time. Most existing re-id methods either ignore this problem or simply upscale LR images. In this work, we address this problem by developing a novel approach called Super-resolution and Identity joiNt learninG (SING) to simultaneously optimise image super-resolution and person re-id matching. This approach is instantiated by designing a hybrid deep Convolutional Neural Network for improving cross-resolution re-id performance. We further introduce an adaptive fusion algorithm for accommodating multi-resolution LR images. Extensive evaluations show the advantages of our method over related state-of-the-art re-id and super-resolution methods on cross-resolution re-id benchmarks.




How to Cite

Jiao, J., Zheng, W.-S., Wu, A., Zhu, X., & Gong, S. (2018). Deep Low-Resolution Person Re-Identification. Proceedings of the AAAI Conference on Artificial Intelligence, 32(1).