hw sw codesign architecture for h 263 video coding
Báo cáo hóa học: " Research Article A Content-Motion-Aware Motion Estimation for Quality-Stationary Video Coding Meng-Chun Lin and Lan-Rong Dung" docx
... according to the zero motion vector count (ZMVC) The higher the ZMVC, the higher the subsample ratio As the result of applying the algorithm for H. 264/AVC applications, the proposed algorithm can produce ... all other FBMAs The ZMVC is a feasible measurement for indicating the motion-level of video The higher the ZMVC, the lower the motion-level Figure shows the ZMVC of first P-frame in each GOP for ... problem for high-frequency band On the other hand, when the bandwidth of signal is narrow, higher downsample ratio or lower sampling frequency is allowed without aliasing problem When applying the...
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báo cáo hóa học:" Early disparity estimation skipping for multi-view video coding" potx
... performance of the proposed algorithm and the TZ-search algorithm [18], which is used in JMVM software as a fast search method Results of the proposed algorithm with the TZ-search algorithm showed ... degradation than those of the method used by SKIP mode The average encoding time of the motion activity method was slightly faster This is due to the characteristics of the method used by SKIP mode The ... provide better performance through the use of an additional process for selection of the threshold values On the other hand, the method used by SKIP mode is appropriate for a limited hardware development...
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Báo cáo hóa học: " Research Article JPEG2000-Compatible Scalable Scheme for Wavelet-Based Video Coding" doc
... approach is due to Huang and Schultheiss, who stated the theoretical optimal bit allocation for generic transform coding in the high-resolution hypothesis [26] They derived a formula which defines the ... accomplished analytically The resulting spline curves have not the irregularities which characterize the experimental data It means that when the allocation algorithm looks for points with the same ... controls the balance between the two constraints The greater λ, the greater the penalty on the energy of the second derivative, and the smoother the final curve result It has been shown [31] that the...
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Báo cáo hóa học: " End-to-End Rate-Distortion Optimized MD Mode Selection for Multiple Description Video Coding" doc
... adaptive method when used with unbalanced paths where one path is more reliable than the other The channel consisted of one path with 3% average packet loss rate and another with 7%, both with expected ... to outperform the STD coding approach by as much as 4.5 dB with the Foreman sequence and up to dB with the Carphone sequence ADAPT is able to outperform TS, which more or less performs the second ... approach generally provides the best performance of each of these Also shown in Figure are the results from a typical video coding approach which we will refer to as standard video coding (STD) Here,...
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Báo cáo hóa học: " A Framework for Adaptive Scalable Video Coding Using Wyner-Ziv Techniques" potx
... to the ET approach discussed in Section 3.1 through the mode-switching algorithm We describe the coding procedure for each enhancement layer as follows To code an EL which corresponds to the same ... 2nd bitplane) as they have higher-quality reference than what they would in WZS On the other hand, our proposed WZS techniques can be easily combined with a PFGS coder such that the more significant ... and achieve the quality provided by the jth EL, the decoder will need to have access to (1) the previous frame decoded up to the jth EL, ELi−1,k , k ≤ j, and (2) all information for the higher...
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Báo cáo hóa học: " Least-Square Prediction for Backward Adaptive Video Coding" docx
... adaptive threshold th = max(th1 , th2 ), where th1 = cmax /20 (cmax is the maximum of cXY ) and th2 is the magnitude of the 12th highest peak in cXY Second issue is how to handle the degenerated ... [13]) The major concern with forward adaptive approaches is that the overhead might outweigh the advantages of MC Such issue involves both the estimation and representation of motion, which often ... between the performance and the cost ACKNOWLEDGMENT The author wants to thank the anonymous reviewers for their insightful comments which were helpful to improve the presentation of this work REFERENCES...
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DEPTH ESTIMATION FOR MULTI VIEW VIDEO CODING
... nghệ ngành công nghiệp giải trí, ti vi góc nhìn tự do, h phương tiện truyền thông, cho người dùng trải nghiệm hoàn toàn ti vi h tự thay đổi góc nhìn Ti vi tương lai không hiển thị h nh ảnh ... video màu chụp máy quay đa góc nhìn Đồng thời khóa luận đưa phương pháp sử dụng lưu trữ thông tin để cải tiến phần mềm tham khảo Kết thí nghiệm cho thấy thiện chất lượng ảnh độ sâu phương pháp đề ... mà cho người dùng “sống” khung cảnh 3D Một h ớng tiếp cận đơn giản cho ti vi đa góc nhìn sử dụng công nghệ có video đa góc nhìn với h thống máy quay để chụp lại khung cảnh H nh ảnh góc nhìn...
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BÀI THẢO LUẬN: CHUẨN NÉN VIDEO H.263
... mã h a video sử dụng chuẩn nén H. 263 : -Ban đầu H. 263 thiết kế cho nhu cầu truyền thông tốc độ thấp với liệu thấp 64 kbits/s cung cấp chất lượng h nh ảnh video tương đối kém, sau giới h n phá ... Các loại khung -Để có mức độ nén cao cần thiết, tiêu chuẩn H. 263 sử dụng khung I, khung P, khung B -Như thấy trước h nh 4.11(c) , khung PB bao gồm khung B khung P -Các thông tin mã h a cho macroblock ... đoán thường bị giới h n đến khu vực xác định khung tham chiếu xung quanh địa điểm khung mục tiêu macroblock mã h a Error resilience – khả phục h i lỗi Như trước đó, mạng cho tiêu chuẩn H. 263 mạng...
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Tài liệu Configuring Cisco AVVID Architecture for Voice Video and Inte pptx
... Ethernet hub that offers support for RJ-45 cabling One port of the hub is used directly for the phone while the other can be used for a PC, printer, or other Ethernet device Regardless of the switch ... requirements for the network other than a minimum of 10 Mbps, although a switch is recommended If a Cisco switch is to be used, the IP switch that manages calls should have PortFast enabled; otherwise, ... convert your video network, which is usually H. 320, into an Ethernet standard for video, which is H. 323 The H. 320 to H. 323 conversion can be performed by implementing a device called a Video Terminal...
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Tài liệu Halsted.Press.H.264.And.MPEG-4.Video.Compression.Video.Coding.For.Next.Generation.Multimedia.eBook-LiB docx
... coded video images H. 261 A video coding standard H. 263 A video coding standard H. 264 A video coding standard HDTV High Definition Television Huffman coding Coding method to reduce redundancy HVS Human ... each other Each sees a small, clear image of the other on the phone’s screen, without any of the obvious ‘blockiness’ of older-model video phones After the call has ended, you call up a live video ... both standards and introducing the transform-based CODEC ‘model’ that is at the heart of all of the major video coding standards Chapter looks at the standards themselves and examines the way that...
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Báo cáo sinh học: " Novel data storage for H.264 motion compensation: system architecture and hardware implementation" pdf
... scheme and the associated addressing scheme, which were both designed for the specific needs of the q-pel MC algorithm The proposed method may be used at both the Encoder and the Decoder sides for ... more complex than the MPEG-4 Visual Simple Profile decoder [2] These higher requirements, together with the huge amount of video data that have to be processed for an HDTV stream, make the implementation ... the memory This design is highly pipelined It performs simultaneously the inter-prediction for luma and chromas The luma pipeline has a higher processing delay than 19 the pipeline serving the...
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báo cáo hóa học:" Novel data storage for H.264 motion compensation: system architecture and hardware implementation" doc
... scheme and the associated addressing scheme, which were both designed for the specific needs of the q-pel MC algorithm The proposed method may be used at both the Encoder and the Decoder sides for ... more complex than the MPEG-4 Visual Simple Profile decoder [2] These higher requirements, together with the huge amount of video data that have to be processed for an HDTV stream, make the implementation ... the memory This design is highly pipelined It performs simultaneously the inter-prediction for luma and chromas The luma pipeline has a higher processing delay than 19 the pipeline serving the...
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Báo cáo toán học: " Novel data storage for H.264 motion compensation: system architecture and hardware implementation" pot
... the memory This design is highly pipelined It performs simultaneously the inter-prediction for luma and chromas The luma pipeline has a higher processing delay than the pipeline serving the chromas ... storage scheme and the associated addressing scheme, which were both designed for the specific needs of the q-pel MC algorithm The proposed method may be used at both the Encoder and the Decoder ... complex for the memory addressing scheme For getting the necessary block, two rows need to be opened from consecutive banks, as shown Figure 7b With the proposed addressing scheme the method has a high...
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Báo cáo hóa học: " Research Article The Extended-OPQ Method for User-Centered Quality of Experience Evaluation: A Study for Mobile 3D Video Broadcasting over DVB-H" potx
... videos with high error rate that had higher acceptance in slice mode Relating to the applied coding method, the results of the acceptance analysis revealed that for mfer10 MVC and VD had higher acceptance ... than Simulcast (P < 001) MVC coding method had significantly higher acceptance ratings than the other two coding methods for mfer20 (P < 01) To identify the acceptance threshold, we applied the ... in the video, how truthful is the perception? How worth seeing is the video in general? Do positive or negative influences outweigh? Would I watch the video again? How close to reality is the personal...
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báo cáo hóa học:" Research Article FPSoC-Based Architecture for a Fast Motion Estimation Algorithm in H.264/AVC" doc
... pixels Hexagon search has search points Multi-big hexagon search has (1/4)(|s|) hexagons, each containing 16 search points Extended hexagon search has search points Diamond search has search points ... search pass The search type is modified SUMH However we can expand our architecture to support other types of search, for example, Full Search, and so forth The search pass depends on the search ... Yalcin, H F Ates, and I Hamzaoglu, “A high performance hardware architecture for an SAD reuse based hierarchical motion estimation algorithm for H. 264 video coding, ” in Proceedings of the International...
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Báo cáo hóa học: " A Dynamic Reconfigurable Hardware/Software Architecture for Object Tracking in Video Streams" pptx
... PowerPC processor that is attached to an FPGA in which the hardware part is implemented The FPGA is in charge of the image enhancement that is done using a high pass filtering process The implementation ... point This method is an alternative to using a global threshold for the strength of the corner response (see Figure 1(b), where features are marked) For matching, each feature is compared with all ... window that is used to capture the neighborhood of an incoming pixel The latter is then used to compute the enhanced value of the pixel that is stored in a memory shared by the PowerPC and the FPGA...
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Báo cáo hóa học: " Temporal Scalability through Adaptive M-Band Filter Banks for Robust H.264/MPEG-4 AVC Video Coding" pptx
... France, and the Ph.D degree in 2000 She was with Philips Research France, from 2000 to 2002, where she worked as a Research Scientist on joint source and channel coding techniques She joined THALES ... the cost of a higher dependency on the intraframes, which again highlights the importance of choosing the hierarchical configuration in error-prone environments according to the actual transmission ... adaptive method proposed above, where the intraframe of the second GOP has been im- paired (i.e., the 17th frame in encoding order and the 32th one in decoding order) The advantage of going back for...
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Báo cáo hóa học: " Editorial Advanced Video Technologies and Applications for H.264/AVC and Beyond" ppt
... which can precisely characterize both local and global features such that a more accurate modeling of the compressed video traffic can be achieved Dealing with the bandwidth variation issue, the ... H. 264-based bit stream switching for mobile video streaming,” by Stockhammer et al exploits the H. 264/AVC SP/SI pictures to optimize the encoders by introducing a framework for dynamic switching ... scheduling The achievable performance gains over the constant bit-rate encoding are demonstrated for wireless video streaming over enhanced GPRS Zhang and Zeng in “Seamless bit-stream switching...
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Báo cáo hóa học: "Efficient Video Transcoding from H.263 to H.264/AVC Standard with Enhanced Rate Control" pot
... Figure shows the architecture of the proposed video transcoder It consists of a typical H. 263 decoder followed by a H. 264/AVC video encoder The precoded H. 263 video is first decoded by the H. 263 decoder ... up the transcoding process Furthermore, by using the information available in the precoded video, we further enhance the H. 264/AVC rate control to achieve a better quality for the transcoded video ... the average bit savings for twelve test sequences are less than 5% and around 20% for the remaining two To examine whether the coding performance remains the same for video transcoding using H. 264/AVC,...
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Báo cáo hóa học: " Low-Cost Super-Resolution Algorithms Implementation over a HW/SW Video Compression Platform" pptx
... Compensation (HR S2, MV) (6) HR A = HR A + HR T (6) HR Cont = HR Cont + HR T2 (7) END FOR (8) HR A = 4∗ HR A/HR Cont (9) If (HR Cont(i, j) = 0) Then HR B = Interpolate (HR A (i, j)) (9) ELSE HR B = HR A ... the high-resolution memories HR Cont and HR S2 It is important to note that although the SR algorithms have been applied both to the luminance and the chrominance, the major improvements with ... description of the hybrid video compression architecture where the developed SR algorithms have been mapped In the second section the bases of the ISR algorithms are established while in Section the modifications...
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