• Activity Analysis, Summarization, and Visualization for Indoor Human Activity Monitoring 

    Zhou, Zhongna; Chen, Xi; Chung, Yu-Chia, 1979-; He, Zhihai, 1973-; Han, Tony X.; Keller, James M. (IEEE, 2008-11)
    In this work, we study how continuous video monitoring and intelligent video processing can be used in eldercare to assist the independent living of elders and to improve the efficiency of eldercare practice. More ...
  • Adaptive Critic Design for Energy Minimization of Portable Video Communication Devices 

    Sun, Zhao; Chen, Xi; He, Zhihai, 1973- (IEEE, 2008-08)
    Portable video communication devices operate on batteries with limited energy supply. However, video compression is computationally intensive and energy-demanding. Therefore, one of the central challenging issues in ...
  • Adaptive Silhouette Extraction and Human Tracking in Complex and Dynamic Environments 

    Chen, Xi; He, Zhihai, 1973-; Anderson, Derek T., 1979-; Keller, James M.; Skubic, Marge (IEEE, 2006-10)
    Extracting a human silhouette from an image is the enabling step for many high-level vision processing tasks, such as human tracking and activity analysis. Although there are a number of silhouette extraction and human ...
  • Adaptive Silhouette Extraction In Dynamic Environments Using Fuzzy Logic 

    Chen, Xi; He, Zhihai, 1973-; Keller, James M.; Anderson, Derek T., 1979-; Skubic, Marge (IEEE, 2006-07)
    Extracting a human silhouette from an image is the enabling step for many high-level vision processing tasks, such as human tracking and activity analysis. In a previous paper, we addressed some of the challenges in ...
  • Energy Minimization of Portable Video Communication Devices Based on Power-Rate-Distortion Optimization 

    He, Zhihai, 1973-; Cheng, Wenye; Chen, Xi (IEEE, 2008-05)
    Portable video communication devices operate on batteries with limited energy supply. However, video compression is computationally intensive and energy-demanding. Therefore, one of the central challenging issues in ...
  • Recognizing Falls from Silhouettes 

    Anderson, Derek T., 1979-; Keller, James M.; Skubic, Marge; Chen, Xi; He, Zhihai, 1973- (IEEE, 2006-08)
    A major problem among the elderly involves falling. The recognition of falls from video first requires the segmentation of the individual from the background. To ensure privacy, segmentation should result in a silhouette ...