John Y. A. Wang

Doctoral candidate in Electrical Engineering and Computer Sciences

Research interests

Video coding, image representation, motion estimation

Advisor: Edward H. Adelson

Education

SB/SM, Electrical Engineering and Computer Sciences
Massachusetts Institute of Technology, 1987

Experience

Database Development Engineer and Consultant
Oracle Corporation, Redwood City, CA

Custom Circuit Researcher/Designer
Hughes Aircraft Company, El Segundo, CA

Custom Circuit Researcher/Designer
Texas Instruments, Dallas, TX

Research Description

We are currently developing a video coding scheme that uses mid-level vision concepts to achieve a decomposition that can achieve higher data compression and can be applied to a wider domain of image material. Our representation consists of a set of overlapping layers where each layer contains an intensity map that defines the additive values of each pixel, along with an alpha map that serves as a mask indicating the transparency. These layers are ordered in depth and they occlude each other in accord with the rules of compositing, in a manner similar to traditional ``cel'' animation.

This layered representation is more flexible than standard image coding schemes and can capture semantic properties of natural image sequences. These properties allow us to efficiently characterize, annotate, and manipulate video data.

Publications

Representing Moving Images with Layers

J. Y. A Wang and E. H. Adelson
Appears in IEEE Transactions on Image Processing Special Issue: Image Sequence Compression, September 1994.

Spatio-Temporal Segmentation of Video Data

J. Y. A. Wang and E. H. Adelson
Proceedings of SPIE on Image and Video Processing II, Vol. 2182, pp. 120-131, San Jose, February 1994.

Apply Mid-level Vision Techniques for Video Data Compression and Manipulation

J. Y. A. Wang and E. H. Adelson
Proceedings of SPIE on Digital Video Compression on Personal Computers: Algorithms and Technologies, Vol. 2187, pp. 116-127, San Jose, February 1994.

Layered Representation for Motion Analysis

J. Y. A. Wang and E. H. Adelson
Proceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition 1993, pp. 361-366, New York, June 1993.

Layered Representation for Image Sequence Coding

J. Y. A. Wang and E. H. Adelson
Proceedings of the 1993 IEEE International Conference on Acoustics, Speech, and Signal Processing, Vol. 5, pp. 221-224, Minneapolis, April 1993.

Single Lens Stereo with Plenoptic Camera

E. H. Adelson and J. Y. A. Wang
IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol. 14, No. 2, pp. 99-106, February 1992.

A Stereoscopic Camera Employing a Single Main Lens

E. H. Adelson and J. Y. A. Wang
Proceedings IEEE Computer Society Conference on Computer Vision and Pattern Recognition 1991, Hawaii, June 1991, pp. 619-624.

A High Frequency Fully Differential BiCMOS Operational Amplifier

A. N. Karanicoloas, K. K. O, J. Y. Wang, H. S. Lee, R. L. Reif
Proceedings of the IEEE 1990 Custom Intergrated Circuits Conference, Boston, May 1990.

Please visit my Home Page at BCS for some demos of my research.

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