Jeong Woong Kim , Hae Sool Yang

The KIPS Transactions:PartB , Vol. 13, No. 2, pp. 105-114, Apr. 2006
10.3745/KIPSTB.2006.13.2.105,   PDF Download:

Abstract

In ubiquitous environment where various kinds of computers are embedded in persons, objects and environment and they are interconnected and can be used in any place as necessary, different types of data need to be exchanged between heterogeneous machines through home network. In the environment, the efficient processing, transmission and monitoring of image data are essential technologies. We need to make research not only on traditional image processing such as spatial and visual resolution, color expression and methods of measuring image quality but also on transmission rate on home network that has a limited bandwidth. The present study proposes a new motion vector estimation algorithm for transmitting, processing and controlling image data, which is the core part of contents in home network situation and, using algorithm, implements a real-time monitoring system of multi-dimensional images transmitted from multiple cameras. Image data of stereo cameras to be transmitted in different environment in angle, distance, etc. are preprocessed through reduction, magnification, shift or correction, and compressed and sent using the proposed metamorphosis hierarchical motion vector estimation algorithm for the correction of motion. The proposed algorithm adopts advantages and complements disadvantages of existing motion vector estimation algorithms such as whole?range search, three-stage search and hierarchical search, and estimates efficiently the motion of images with high variation of brightness using an atypical small-size macro block. The proposed metamorphosis hierarchical motion vector estimation algorithm and implemented image systems can be utilized in various ways in ubiquitous environment.

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