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Haijun Liu

Publications and source records attributed to Haijun Liu.

21 records · Page 2Linked to original sources

PCN: Part and Context Information for Pedestrian Detection with CNNs

Pedestrian detection has achieved great improvements in recent years, while complex occlusion handling is still one of the most important problems. To take advantage of the body parts and context information for pedestrian detection, we propose the part and context network (PCN) in this work. PCN specially utilizes two branches which detect the pedestrians through body parts semantic and context information, respectively. In the Part Branch, the semantic information of body parts can communicate with each other via recurrent neural networks. In the Context Branch, we adopt a local competition mechanism for adaptive context scale selection. By combining the outputs of all branches, we develop a strong complementary pedestrian detector with a lower miss rate and better localization accuracy, especially for occlusion pedestrian. Comprehensive evaluations on two challenging pedestrian detection datasets (i.e. Caltech and INRIA) well demonstrated the effectiveness of the proposed PCN.

cs.CV↗

Multi-parameter mechanical and thermal sensing based on multi-mode planar photonic crystals

This paper proposes a novel multifunctional sensing platform based on multimode planar photonic crystals (PPCs). We analytically and numerically demonstrate that the reflection spectrum of PPCs exhibits multiple high-Q resonant modes, and the fundamental and higher-order modes respond distinctively to external mechanical and thermal perturbations, rendering the PPCs superior capability for detection and discrimination of multiple parameters. We further demonstrate simultaneous pressure and temperature sensing with a PPC sensor. Other advantages of PPC sensors include on-chip integration and wafer-scale fabrications.

physics.optics↗

Generic Extensional Framework for the Memristive Systems

Considering the over-requirement of continuity and "well-defined" confined by the canonical framework model for memristive systems, this short paper proposes a more generic extensional framework to accommodate those discontinuity or not "well-defined" situation. In particular, two special subclasses are pointed out to fit the hitherto memristor device models.

cond-mat.mes-hall↗