Cheng-Chung Lin

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Visual analysis of human behavior has generated considerable interest in the field of computer vision because of its wide spectrum of potential applications. Human behavior can be segmented into atomic actions, each of which indicates a basic and complete movement. Learning and recognizing atomic human actions are essential to human behavior analysis. In(More)
The vertex correspondence establishment among multiple objects is a versatile operation in computer graphics and geometry processing. We propose a systematic method called <i>recursive quinary subdivision</i> to efficiently find a dissection for a meshed object of genus-zero with little user input. The process can be easily extended to multiple objects,(More)
Hard handover mechanism is adopted to be used in 3GPP Long Term Evolution (3GPP LTE) in order to reduce the complexity of the LTE network architecture. This mechanism comes with degradation in system throughput as well as a higher system delay. This paper proposes a new handover algorithm known as LTE Hard Handover Algorithm with Average Received Signal(More)
Biomechanics of the knee during stair-ascent has mostly been studied using skin-marker-based motion analysis techniques, but no study has reported a complete assessment of the soft tissue artifacts (STA) and their effects on the calculated joint center translation, angles and moments at the knee in normal subjects during this activity. This study aimed to(More)
In this paper, an efficient rendering framework for cloud is proposed. With a simplified lighting model, features such as self-shadowing and light scattering are stored in the Shadow Relation Table (SRT) and Metaball Lighting Texture Database (MLTDB) in the preprocessing. An octree representation of the simulation volume is constructed to facilitate the(More)
We propose an efficient framework for dynamic cloud rendering. Base on the proposed simplified lighting model, the Shadow Relation Table (SRT) and Metaball Lighting Texture Database (MLTDB) are constructed in the preprocessing, and features such as self-shadowing and light scattering can be computed quickly using table lookup at the run time. Clouds are(More)
Reconfiguring the parameters of PTZ cameras in a surveillance system is a combi-natorial optimization problem. Computing the optimal solution is very time consuming, and existing methods can only provide sub-optimal solutions. In this paper, we propose a non-linear objective function that better utilizes a camera network to track multiple targets. We also(More)