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Multiple Description Coding Using Directional Discrete Cosine Transform
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  • Multiple Description Coding Using Directional Discrete Cosine Transform
  • Multiple Description Coding Using Directional Discrete Cosine Transform
저자명
Lama. Ramesh Kumar,Kwon. Goo-Rak
간행물명
Journal of information and communication convergence engineering
권/호정보
2013년|11권 4호|pp.293-297 (5 pages)
발행정보
한국정보통신학회
파일정보
정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

Delivery of high quality video over a wide area network with large number of users poses great challenges for the video communication system. To ensure video quality, multiple descriptions have recently attracted various attention as a way of encoding and visual information delivery over wireless network. We propose a new efficient multiple description coding (MDC) technique. Quincunx lattice sub-sampling is used for generating multiple descriptions of an image. In this paper, we propose the application of a directional discrete cosine transform (DCT) to a sub-sampled quincunx lattice to create an MDC representation. On the decoder side, the image is decoded from the received side information. If all the descriptions arrive successfully, the image is reconstructed by combining the descriptions. However, if only one side description is received, decoding is executed using an interpolation process. The experimental results show that such the directional DCT can achieve a better coding gain as well as energy packing efficiency than the conventional DCT with re-alignment.