3D Head Model Classification 2005-now Automatic Semantic Analysis and Annotation of Images Using Spatial Hidden Markov Model 2005-now School-based Tutoring System 2005- now Learning Graphical Model for Human Motion Characterization 2005-now Cyber Composer: Hand Gesture-Driven Intelligent Music Composition and Generation 2004 - now 3D Scene Analysis from Single Image with Lens Distortion 2004-now Web-based English Learning System 2004 - now Personalized Education Portal 2004 - now Conten-based Retrieval of 3D Head Models Using a Single Face View 2004 - now Smart Ambience Therapy (SAT) 2004-now Real Time Free Human Motion Tracking 2003-now Algebraic Planar Metric Rectification 2003-now Simulating Vivid 3D Solid Textures from 2D Growable Patterns 2003-now Virtual Embryo :A symbiosis of developmental biology and creative media computing and art  2001-now Automatic Analysis and Synthesis of Human Hand Gestures from Image Sequence Using an Anatomy-Based Hand Model 1997-now Affine-invariant Sketch-based Retrieval of Images 2000-now Body-Brush: For Generating Virtual 3-D Painting  2000-now I-Browse - An Image Retrieval and Annotation System  1999-2000  An object-oriented framework for Content-based Image Retrieval 1998-now  Symmetry Detection Based on Generalized Complex Moments 1998-1998 3D Head Models Indexing and Retrieval 2000-now Computer Assisted Simulation System 1999-2000 A Model-based Approach to Synthesizing Realistically Chinese Calligraphic Writings 1997-2000 Structural-Fractal Representation  1997-2000   Image Database Retrieval 1997-1998 Automatic Synthesis of Fractal Details 1996-1999 Multimedia Document System 1998-1999 Dynamic Modelling of Human Limbs 1996-1998 Adaptive image thresholding 1997-1998 Discriminative Wavelet Shape Descriptors 1997-1998 Content-based  Retrieval of  Presentation Video  1996-1998 Generalized Image Normalization 1996-1997 Object Extraction Based On Active Contour 1996-1998 Facial Modeling and Simulation 1996-1997 Craniofacial Surgical Planning 1995-1996 Multimedia Medical Document System 1993-1995 Construction of Scalable Fonts  1993-1994 A Color Logo Retrieval (CLR) system based on color, shape and spatial relationships 1998-now