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3DTV promises to become the mainstream of next-generation TV systems. High resolution 3DTV provides users with a vivid watching experience. Moreover, free-viewpoint view synthesis (FVVS) extends the common two-view stereo 3D vision into virtual reality by generating unlimited views from any desired view point. In the next-generation 3DTV systems, the set-top box (STB) SoC requires both a high-definition...
In recent years, 3D related applications, including 3D movie and 3DTV, are getting more and more attentions. In order to make the real-time 3D applications feasible, efficient multiview video coding (MVC) scheme is desired. However, the system throughput requirement on a high definition (HD) MVC encoder is at least two times higher than the current highest throughput H.264/AVC encoder design. In order...
This document proposes a fast inter-mode decision method based on the residual of motion estimation for H.264/AVC. There are 7 different MB modes in inter-mode coding with a SKIP mode, as well as 9 modes of 4 times 4, 8 times 8 and 4 modes of 16 times 16 in intra-mode coding for P-slices coding, which brings drastic computational complexity to the encoder. To solve this problem, we suggest a novel...
Fractional motion estimation (FME) is widely used in video compression standards. In H.264/AVC, the precision of motion vector is down to quarter pixels to improve the coding efficiency. However, FME occupies over 45% of the computation complexity in an H.264 encoder and this high complexity limits the processing capability. In this paper, a single-iteration full search FME is proposed. By the algorithm...
To provide more vivid perception, more and more advanced features, like the 4ktimes2k resolution and the multiview functionality, are emerging for TV. For a multiview video coding (MVC) encoder, motion and disparity estimation (ME/DE) take at least half the hardware requirement. To solve these challenges, a cache-based integer ME/DE algorithm is proposed. With a cache memory as the search window buffer,...
The proposed MVC encoder chip is characterized as follows: 1) View-parallel MB-interleaved (VPMBI) scheduling with 8-stage MB pipelining is introduced to overcome the first 2 challenges. With this technique, the processing capability is 212 Mpixels/s, at least 3.4times better than the previous works. In addition, view scalability is achieved and supports real-time processing from single-view 4096times2160p...
External memory bandwidth is an important issue in system-on-chip (SoC) systems. Especially in high definition (HD) video coding, the bandwidth requirement of off-chip memory is critical in video processing. In recent researches, embedded compression shows high potential on off-chip memory bandwidth reduction. Works about embedded compression have been done for low power applications. However, there...
Multiview video coding (MVC) is getting more and more attention in recent years because of the realistic perception it can bring. However, the current H.264-based coding scheme cannot get enough coding gain in the rate-distortion (R-D) performance. Furthermore, the view synthesis and random access between views are also design challenges. In this paper, a multiview hybrid coding system with texture-depth...
High Definition (HD) video compression enables vivid reproduction of scenes. However, Motion Estimation (ME) requires large memory capacity and huge memory bandwidth, which are undesirable in many platforms including ASIC and SoC. In this paper, an algorithm and architecture design of cache system and fast ME in HD H.264/AVC are proposed. With the proposed cache system and hardware-oriented fast ME...
3-D video will become one of the most important video technologies in the next generation of television. Due to ultra high data bandwidth requirement for 3-D video, effective compression technology becomes an essential part in the infrastructure. Thus stereo and multiview video coding (MVC) plays a critical role. However, MVC systems require much more computational complexity relative to mono-view...
In this paper, an efficient technique to implement variable length coding for multiple video coding standards is presented. To support multiple video coding standards, many VLC tables must be stored to perform coding procedure correctly. Our proposal is to merge different VLC tables of multiple standards into the most representative table, so the required memory for those tables can be reduced largely...
Multiview video coding (MVC) plays a critical role in 3D-TV systems. However, MVC require much more memory bandwidth and computational complexity relative to mono-view video coding. Therefore, an efficient prediction scheme is necessary for computation reduction. In this paper, a new fast prediction algorithm, computation-free motion estimation (ME) with inter-view mode decision, is proposed. By utilizing...
In H.264/AVC, the context-based adaptive variable length coding (CAVLC) is used for lossless compression. Direct table-lookup implementation requires higher cost because it employs a larger memory to produce the encoded results. A carefully reduced table is constructed and used for encoding in the design. With the helps of symbol mapping and codeword generating modules, our encoder can generate the...
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