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Displaying 1-11 out of 11 total
Exploiting ZigBee in Reducing WiFi Power Consumption for Mobile Devices
IEEE Transactions on Mobile Computing
By Yifan Zhang,Qun Li
Issue Date:December 2014
We present HoWiES, a system that saves energy consumed by WiFi interfaces in mobile devices with the assistance of ZigBee radios. The core component of HoWiES is a WiFi-ZigBee message delivery scheme that enables WiFi radios to convey different messages to...
Event Detection in Complex Scenes Using Interval Temporal Constraints
2013 IEEE International Conference on Computer Vision (ICCV)
By Yifan Zhang,Qiang Ji,Hanqing Lu
Issue Date:December 2013
In complex scenes with multiple atomic events happening sequentially or in parallel, detecting each individual event separately may not always obtain robust and reliable result. It is essential to detect them in a holistic way which incorporates the causal...
Multispectral and Panchromatic Image Fusion Algorithm Based on Local Spatial Recovery Model
Image and Signal Processing, Congress on
By Yifan Zhang, Mingyi He
Issue Date:May 2008
In this paper, Local Spatial Recovery Model (LSRM) between images of the same scene with different spatial resolutions is constructed and utilized in multispectral and panchromatic image fusion to propose a new algorithm (LSRM-MPF algorithm). The newly pro...
Modeling Temporal Interactions with Interval Temporal Bayesian Networks for Complex Activity Recognition
IEEE Transactions on Pattern Analysis and Machine Intelligence
By Yongmian Zhang, Yifan Zhang,E. Swears,N. Larios, Ziheng Wang, Qiang Ji
Issue Date:October 2013
Complex activities typically consist of multiple primitive events happening in parallel or sequentially over a period of time. Understanding such activities requires recognizing not only each individual event but, more importantly, capturing their spatiote...
Constrained Clustering and Its Application to Face Clustering in Videos
2013 IEEE Conference on Computer Vision and Pattern Recognition (CVPR)
By Baoyuan Wu,Yifan Zhang,Bao-Gang Hu,Qiang Ji
Issue Date:June 2013
In this paper, we focus on face clustering in videos. Given the detected faces from real-world videos, we partition all faces into K disjoint clusters. Different from clustering on a collection of facial images, the faces from videos are organized as face ...
Undo the codebook bias by linear transformation for visual applications
Found in: Proceedings of the 21st ACM international conference on Multimedia (MM '13)
By Chao Liang, Chunjie Zhang, Junbiao Pang, Qi Tian, Shuhui Wang, Yifan Zhang, Qingming Huang
Issue Date:October 2013
The bag of visual words model (BoW) and its variants have demonstrate their effectiveness for visual applications and have been widely used by researchers. The BoW model first extracts local features and generates the corresponding codebook, the elements o...
Towards better CPU power management on multicore smartphones
Found in: Proceedings of the Workshop on Power-Aware Computing and Systems (HotPower '13)
By Łi Zhuang, Feng Zhao, Xudong Wang, Yifan Zhang, Xuanzhe Liu, Yunxin Liu
Issue Date:November 2013
Although multicore smartphones have become increasingly mainstream, it is unclear whether and how smartphone applications can utilize multicore CPUs to improve performance. In this paper we study the performance of mobile applications using multicore CPUs,...
CacheKeeper: a system-wide web caching service for smartphones
Found in: Proceedings of the 2013 ACM international joint conference on Pervasive and ubiquitous computing (UbiComp '13)
By Chiu Tan, Li Qun, Yifan Zhang
Issue Date:September 2013
Efficient web caching in mobile apps eliminates unnecessary network traffic, reduces web accessing latency, and improves smartphone battery life. However, recent research has indicated that current mobile apps suffer from poor implementations of web cachin...
Point-context descriptor based region search for logo recognition
Found in: Proceedings of the 4th International Conference on Internet Multimedia Computing and Service (ICIMCS '12)
By Hanqing Lu, Jianlong Fu, Jinqiao Wang, Yifan Zhang
Issue Date:September 2012
We propose a novel approach for logo recognition in this paper. Firstly, we adopt a point-context descriptor for region modeling, which is a highly correlated integration of three kinds of features: point, shape, and patch. Secondly, after the query image ...
Global routing and track assignment for flip-chip designs
Found in: Proceedings of the 47th Design Automation Conference (DAC '10)
By Chunlei Chu, Gary K. Yeap, Jian Sun, Xiaodong Liu, Xuan Zeng, Yifan Zhang
Issue Date:June 2010
This paper describes a solution for global routing and track assignment of flip-chip I/O nets. Voronoi Diagram (VD) is used to partition the open routing space and the geometrical properties of VD graph are exploited to create global routing channels with ...
Highlight ranking for sports video browsing
Found in: Proceedings of the 13th annual ACM international conference on Multimedia (MULTIMEDIA '05)
By Hanqing Lu, Qingshan Liu, Xiaofeng Tong, Yifan Zhang
Issue Date:November 2005
Sports video has been extensively studied for its wide viewer-ship and tremendous commercial potentials. Many studies focused on highlight extraction for summarizing a lengthy video. In this paper, we present an advanced highlight analysis system for sport...
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