Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Color Image Coding by Colorization Approach | Hindawi Publishing Corporation EURASIP Journal on Image and Video Processing Volume 2008 Article ID 158273 9 pages doi 2008 158273 Research Article Color Image Coding by Colorization Approach Takahiko Horiuchi and Shoji Tominaga Division of Information Sciences Graduate School of Advanced Integration Science Chiba University 1-33 Yayoi-cho Inage-ku Chiba 263-8522 Japan Correspondence should be addressed to Takahiko Horiuchi horiuchi@ Received 24 August 2007 Accepted 23 January 2008 Recommended by Konstantinos Plataniotis This paper proposes a new color image coding scheme called colorization image coding. The scheme is based on the colorization technique which can colorize a monochrome image by giving a small number of color pixels. We develop algorithms useful for color image coding. First the luminance component is separated from an input color image. Then a small number of color seeds are selected as chrominance information. The luminance image component is coded by a lossy coding technique and the chrominance image component is stored as color seeds. The decoding is performed by the colorization algorithm. It is shown that this colorization technique is effective to image coding especially for high compression rate through the experiments using different types of images. Copyright 2008 T. Horiuchi and S. Tominaga. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. 1. INTRODUCTION With the recent spread of the internet and multimedia technologies digital color images play more and more important role in human visual communications. Digital color imaging has an enormous impact on industrial applications and scientific projects. Transmission of images and video over very low-bit-rate channels has been a highly challenging task of the information technology during the last decade. .
