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Design of Object-based Video CODEC for the Mobile Video Telephony Using Hybrid Transform  

Jeon, Sung-Hye (부경대학교 컴퓨터공학과)
Seo, Yong-Su (동서대학교 정보시스템공학계열 전자공학과)
Kwon, Ki-Ryong (부경대학교 IT융합응용공학과)
Publication Information
Journal of Korea Multimedia Society / v.13, no.4, 2010 , pp. 560-574 More about this Journal
Abstract
Recently, many people can easily contact video telephony service through the mobile terminal owing to the commercialization of 3G communication technology. However, the quality of the serviced video telephony has been not good yet by the actual mobile restrictions. For solving quality problems, this paper presents the design of the object-based video CODEC using hybrid transform in mobile video telephony. The proposed design firstly segment each frame into a significant object and an insignificant object. The proposed design is to improve the quality of a significant object by limiting the bit rate of a insignificant object. Thus, we compress a significant object with high quality and low compression ratio and compress an insignificant object with low quality and high compression ratio. Furthermore, we control the bit rate of the video stream in the limited bandwidth by adjusting the compression ratio of each object. From experimental results, we confirmed that our method has more higher quality than methods in the conventional CODECs at the significant region on the same bit rate.
Keywords
Mobile Video Telephony; Video CODEC; Object; Hybrid Transform;
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