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Engineering Commons

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Iowa State University

Electrical and Computer Engineering

1984

Articles 1 - 2 of 2

Full-Text Articles in Engineering

Technique For Video Compression By Projection Onto Convex Sets, P. Santago, Sarah A. Rajala Dec 1984

Technique For Video Compression By Projection Onto Convex Sets, P. Santago, Sarah A. Rajala

Sarah A. Rajala

This paper describes a video compression technique which utilizes the alternating projection theorem for convex sets. The image to be transmitted is determined to be in certain convex sets and parameters defining these sets are sent. The receiver can then use the method of successive projections to locate an image which is in the intersection of the sets. If the intersection is small then the image determined should be close to the desired image. The coder can be made more robust by easily adding additional convex sets or using it in conjunction with other coding schemes such as motion compensation.


An Evaluation Of The Directed Flow Graph Methodology, Wesley E. Snyder, Sarah A. Rajala May 1984

An Evaluation Of The Directed Flow Graph Methodology, Wesley E. Snyder, Sarah A. Rajala

Sarah A. Rajala

The purpose of this project was to evaluate the applicability of the Directed Graph Methodology (DGM) to the design and analysis of special purpose image and signal processing hardware. To this end, a special purpose image processing system was designed and described using DGM. The design, suitable for VLSI, implements an innovative region labeling technique. The utility of DGM was evaluated using this design.