[...]... restore some of the image information, progressive coding and multiple description coding can restore comparative fuzzy image information, and the reconstruction effect of progressive coding is better than multiple description coding When the third data packet is lost, the image quality of nonprogressive coding and progressive coding comes to a standstill, the main reason being that these two schemes... the terminal and the problem caused by unreliable transmission in the existing network; therefore, we should design video coding which has low coding complexity and strong errorresilient ability 1.2 Multiple Description Coding (MDC) 1.2.1 Basic Idea of MDC The basic idea of multiple description coding (MDC) is to encode the source into many descriptions (bit stream) of equal importance and transfer... and adopting the coding frame of “independent coding and joint decoding” for adjacent frames, which has essential difference with the structure of “joint coding and joint decoding” for adjacent frames in traditional video coding standard MPEG The typical DVC, as shown in Fig 1.3, extracts a group of frames with equal interval from the image sequence to code which are called key frames; its coding and. .. hypothesis of the ideal multiple description signal channel; the descriptions transmitted in an ideal signal channel can be all received correctly or lost But in fact, both the Internet and the wireless channel are not ideal description channels; the packet may be lost randomly in any channel Therefore, the multiple description video coding scheme should also consider the effect of multiple description channel... distribution packaging mechanism is suitable for image and video transmission on unreliable network 2.3.2 Quantization-Based MDC The multiple- description coding algorithms based on quantization mainly include the multiple- description scalar quantization [21] and the multiple- description lattice vector quantization [22] Vaishampayan [21] developed the theory of MDSQ and applied it to the problem of combat channel... imagery: a distributed source coding approach In: Proceedings of IEEE Data Compression Conference, Snowbird, pp 437–446 (Mar 2005) 53 Pradhan, S S., Ramchandran, K.: Distributed source coding using syndromes (DISCUS): design and construction In: Proceedings of IEEE Data Compression Conference, Snowbird, pp 158–167 (1999) 54 Pradhan, S., Ramchandran, K.: Distributed source coding: symmetric rates and applications... coding and decoding adopt the traditional intra ways, such as H.264 coding technology The frames between the key frames are called WZ frames; these frames adopt the coding method of intra coding and inter decoding Because WZ coding transfers some or all of the motion estimation of huge amount of calculation in traditional video coding algorithm to the decoding end, DVC realizes low-complexity encoding In... complexity is five to ten times easier than the coding end Therefore, the traditional video coding method is applied in situations when the coding end has stronger computational capabilities or the one-time compression and multiple decoding of non-real time, such as broadcasting, streaming media VOD services, and so on On the other hand, the traditional video coding focused more upon improving the compressive... issue of image and video compression Research on image compression has been done during the last several years Researchers have proposed various compression methods such as DPCM, DCT, VQ, ISO/IEC, and ITU-T, and other international organizations have made many successful image and video standards [1–8], such as the still image video standard represented by JPEG and JPEG-2000, the coding standard of high-rate... traditional source encoding encounters packet loss and delay on unreliable network Each description generated by the multiple description coding has the following characteristics: Firstly, the importance of each description is the same and does not need to design network priority specially, thus reducing the cost and complexity of the network design Secondly, every description being independent, the decoder . alt="" Distributed Multiple Description Coding Huihui Bai • Anhong Wang • Yao Zhao Jeng-Shyang Pan • Ajith Abraham Distributed Multiple Description Coding Principles, Algorithms and Systems 123 Dr Independent Coding, Independent Decoding 31 3.1.2 Joint Coding, Joint Decoding 31 3.1.3 Independent Coding, Joint Decoding 32 3.1.4 Side Information Encoding in the Decoder 33 3.2 Distributed Source Coding. Introduction 1 1.1 Background 1 1.2 Multiple Description Coding (MDC) 3 1.2.1 Basic Idea of MDC 3 1.2.2 Review of Multiple Description Coding 6 1.3 Distributed Video Coding (DVC) 7 1.3.1 Basic Idea