The Understanding of Meaningful Events in Gesture-Based Interaction.- Apply GPCA to Motion Segmentation.- Gait Analysis and Human Motion Tracking.- Spatio-temporal Dynamic Texture Descriptors for Human Motion Recognition.- Efficient Object Localization with Variation-Normalized Gaussianized Vectors.- Fusion of Motion and Appearance for Robust People Detection in Cluttered Scenes.- Understanding Sports Video Using Players Trajectories.- Real-Time Face Recognition from Surveillance Video.- Event Understanding of Human-Object Interaction: Object Movement Detection via Stable Changes.- Survey of Dirac: A Wavelet Based Video Codec for Multiparty Video Conferencing and Broadcasting.- Erratum: Event Understanding of Human-Object Interaction: Object Movement Detection via Stable Changes.