Afzal Godil

NIST/ITL
100 Bureau Drive Stop 8940
Gaithersburg, MD 20899-8313

Biography:

Afzal Godil is a project leader in the Information Technology Laboratory at National Institute of Standards and Technology (NIST) where he has been for over ten years. Prior to that he has worked at the NASA Langley and Lewis Research Centers as a contractor. His main focus in research and development is in the area of 3D graphics/visualization, digital human modeling, computational methods, and pattern recognition. He was also a principle technical staff member in the initiation and development of 3D Face Recognition and 3D shape searching. Finally he is active in a variety of standards efforts, such as VRML/X3D, Medical extension of X3D, biometrics and the “Anthropometry--human body size/shape analysis" project. He has a MS in Aerospace and Mechanical Engineering from the University of Arizona.

Talk Title:3D Shape Representation and Analysis of the Human Body and 3D Retieval Interfaces

Abstract: The 3D scans of human bodies in the CAESAR human database contain over two hundred fifty thousand grid points. To be used effectively for analysis, indexing, searching, clustering and retrieval, these human bodies requires a compact shape representation. We have developed two such compact representations based on human head shape by applying Principal Component Analysis on the facial surface and in the second method the whole head is transformed to a spherical coordinate system expanded in a basis of Spherical Harmonics. We also have developed compact representations based on human body shape descriptor based on lengths mostly between joints of single large bones and in the second method silhouettes of the human body are created and then encoded as Fourier shape descriptors.

In the second part of the talk will discuss different 3D Retieval Interfaces, such as based on multiple 2D sketches. We will describe our method which utilizes physical objects as the input for the 3D shape searching.