19,812 Hits in 3.8 sec

Reduced Frame Quantization in Video Coding [chapter]

Tuukka Toivonen, Janne Heikkilä
2006 Lecture Notes in Computer Science  
We vary the quantization parameter in H.264 video encoding by increasing it by a well-chosen offset in every other frame, which we call reduced frames.  ...  As the motion compensation for a reduced frame is performed mainly from the previous frame (which is non-reduced), we obtain a large reduction in bit rate with only a small loss in video quality.  ...  The total bit rate is reduced in average by 6% at low bit rates, and up to 18% with some video sequences which contain only little motion.  ... 
doi:10.1007/11738695_9 fatcat:lqtowmrb3zextjsw3dqnxu7yu4

An efficient algorithm for H.264/AVC high definition video coding

Zhenzhong Chen, Dongdong Zhang, King Ngan
2008 IEEE transactions on consumer electronics  
However, the quality fluctuation cannot be avoided in single pass video coding due to the variation of the video content, flexible coding structure, different frame types, etc.  ...  In this paper, we propose an efficient method to reduce the quality fluctuation for H.264/AVC high definition (HD) video coding.  ...  PROCEDURE DRDC ALGORITHM B-picture is an important feature in video coding to reduce the bit rate.  ... 
doi:10.1109/tce.2008.4711245 fatcat:hhqtn7cdbnhsziajxtlgrzvihi

State-Of-The-Art In Video Processing: Compression, Optimization And Retrieval

G. Megala, Et. al.
2021 Turkish Journal of Computer and Mathematics Education  
Removing redundant information is the main task in the video sequence compression. A survey on various block matching algorithms, quantization and entropy coding are focused.  ...  This paper summarizes the compression standards, describes the main concepts involved in video coding.  ...  Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships which have or could be perceived to have influenced the work reported in  ... 
doi:10.17762/turcomat.v12i5.1793 fatcat:q3ocrh73xva5znrewith5opftm

Reducing Correlation Noise In Wyner-Ziv Video Coding

Carl Debono, Reuben Farrugia, Jeffrey Micallef
2012 Zenodo  
Publication in the conference proceedings of EUSIPCO, Bucharest, Romania, 2012  ...  The research work disclosed in this publication is partially funded by the Strategic Educational Pathways Scholarship Scheme (Malta).  ...  Distributed Video Coding (DVC) is a coding paradigm which can potentially reduce the complexity of the encoder.  ... 
doi:10.5281/zenodo.52342 fatcat:iazqk7tv7zdaje5rwd3onhmsk4

Improved error resilient H.264 coding scheme using SP/SI macroblocks

Xiaosong Zhou, Wei-Ying Kung, C.-C. Jay Kuo, Amir Said, John G. Apostolopoulos
2005 Image and Video Communications and Processing 2005  
The introduced bit bate is further reduced by adjusting quantization levels adaptively.  ...  An error resilient H.264 coding scheme using SP/SI macroblocks is presented in this work.  ...  ACKNOWLEDGEMENTS The research has been funded in part by the Integrated Media Systems Center, a National Science Foundation Engineering Research Center, under the Cooperative Agreement No.  ... 
doi:10.1117/12.589714 dblp:conf/eiivcp/ZhouKK05 fatcat:pjerxv7545gd5jrvqcvv54uoni

High-Efficiency Video Coder in Pruned Environment Using Adaptive Quantization Parameter Selection

Krishan Kumar, Mohamed Abouhawwash, Amit Kant Pandit, Shubham Mahajan, Mofreh A. Hogo
2022 Computers Materials & Continua  
Using the proposed AI-VQM technique, more feasible and efficient video sequences are achieved with less loss in PSNR than the variable quantization method (VQM) algorithm with approximately a rise of 10%  ...  The quantization method is adapted based on video sequence using statistical analysis, improving bit budget, quality and complexity reduction.  ...  In the case of Frame independent, approach a standard quantization matrix used for each coding block of residual frames.  ... 
doi:10.32604/cmc.2022.027850 fatcat:vcezyu45zrcu5ahze4ii3h5u6m

Compression of halftone video for electronic paper

Chao-Yung Hsu, Chun-Shien Lu, Soo-Chang Pei
2008 2008 15th IEEE International Conference on Image Processing  
Our scheme is mainly composed of three components: block decomposition, blockbased halftone quantization, and source coding.  ...  Video halftoning is a key technology for use in the innovative display -electronic paper (e-paper).  ...  In Eq. (7) , the video frame X is a compressed halftone video frame and Y is an original grayscale video frame. The RD performance for the two videos is shown in Fig. 4 .  ... 
doi:10.1109/icip.2008.4712076 dblp:conf/icip/HsuLP08 fatcat:dlcxd55qmnelnprz45pumvnpz4

Dependent bit allocation in multiview video coding

Jae Hoon Kim, J. Garcia, A. Ortega
2005 IEEE International Conference on Image Processing 2005  
We consider the bit allocation problem in multiview video coding (MVC).  ...  We note that, typically, optimal quantizer choices have the following properties: i) quantization choices tend to be similar for frames that are consecutive (in time or in view), ii) better quantization  ...  Diagram for Multiview Video Coding.  ... 
doi:10.1109/icip.2005.1530049 dblp:conf/icip/KimGO05 fatcat:rjdugyvsyjg2ti77iifnhrinkq

Hybrid distributed video coding with frame level coding mode selection

Chieh-Chuan Chiu, Shao-Yi Chien, Chia-han Lee, V. Srinivasa Somayazulu, Yen-Kuang Chen
2012 2012 19th IEEE International Conference on Image Processing  
In this paper, the hardware architecture design of an efficient distributed video coding system, hybrid DVC with frame-level coding mode selection, is proposed.  ...  Distributed video coding (DVC), a new video coding paradigm based on Slepian-Wolf and Wyner-Ziv theories, is a promising solution for implementing low-power and low-cost distributed wireless video sensors  ...  HYBRID DISTRIBUTED VIDEO CODING In DVC, video frames are splitted into key frames (conventional intra codec) and Wyner-Ziv (WZ) frames (intraencoded).  ... 
doi:10.1109/icip.2012.6467171 dblp:conf/icip/ChiuCLSC12 fatcat:h3pvpmqvpjb3rdqmh37lwva3mi

Reducing Bitrate and Increasing the Quality of Inter Frame by Avoiding Quantization Errors in Stationary Blocks

Xuan-Tu Tran, Ngoc-Sinh Nguyen, Duy-Hieu Bui, Minh-Trien Pham, Hung Nguyen, Cong-Kha Pham
2018 EAI Endorsed Transactions on Industrial Networks and Intelligent Systems  
In image compression and video coding, quantization error helps to reduce the amount of information of the high frequency components.  ...  In this paper, we reveal negative effects of quantization errors in inter prediction and propose a video encoding scheme which is able to avoid side effects of quantization errors in the stationary parts  ...  Effect of Quantization Error in Inter Frame In video codecs, to reduce transmission rate of digital picture information and guarantee encoder to share the same set of reference pictures with its decoder  ... 
doi:10.4108/eai.24-10-2019.162795 fatcat:ac73qd5hbfhrnndfkoyxt3hgg4

Video Compression Algorithm Based on All Phase Biorthogonal Transform and MPEG-2

Baochen Jiang, Chunxiao Zhang, Chengyou Wang, Xiaoyan Wang
2015 International Journal of Hybrid Information Technology  
As the international video coding standard, MPEG-2 has been widely used in today's digital video applications. However, its quantization operation is complex.  ...  Compared with the conventional DCT, APBT reduces the inter-pixel redundancy and the computational complexity using the uniform quantization for the intra frames transform-coding.  ...  In particular, for I frame, quantization table adopts uniform value, so that the complexity of calculation reduces obviously.  ... 
doi:10.14257/ijhit.2015.8.3.14 fatcat:jzmgdg7jsrhcroiq2c4relogzm

Edge Computing-Based SAT-Video Coding for Remote Sensing

Trong-An Bui, Pei-Jun Lee, Kuan-Yu Chen, Chia-Ray Chen, Cynthia S. J. Liu, Hsin-Chia Lin
2022 IEEE Access  
SAT-video coding proposes a hardware-related quantization (Q) function, hardware reduction of the motion estimation (ME) method, and simplified entropy coding (EC), which reduces the computation complexity  ...  The SAT-video encoding speed is 18.95 frames per second for 2560×2560 video. Therefore, the proposed SAT-video coding is an edge computation suitable for micro/minisatellites.  ...  In summary, the SAT-video coding comprises a hardwarerelated quantization function that reduces resource usage and power consumption by up to 71.99% and 55.76%, respectively.  ... 
doi:10.1109/access.2022.3174553 fatcat:fvqx4k4nnzg4bkligwd2bhnlje

Non-Predictive Multistage Lattice Vector Quantization Video Coding [chapter]

M. F. M. Salleh, J. Soragh
2011 Effective Video Coding for Multimedia Applications  
One way to reduce the temporal redundancy is to get the difference frame between the successive frames in a group of picture (GOP).  ...  The prediction step is omitted by the wavelet transform on the temporal domain, thus reducing the computational load in the video coding scheme.  ...  The complete efficient video system depends upon source coding, proper inter and intra frame coding, emerging newer transform, quantization techniques and proper error concealment.The book gives the solution  ... 
doi:10.5772/16110 fatcat:qsqyuz6pvvb3zn2fmygbgudzaa

QoS Mapping between User's Preference and Bandwidth Control for Video Transport [chapter]

Kentarou Fukuda, Naoki Wakamiya, Masayuki Murata, Hideo Miyahara
1997 Building QoS into Distributed Systems  
In this paper, we present a method of QoS mapping between user's preference on video quality and a required bandwidth to transport the video across the network.  ...  Then, for given QoS parameters in terms of spatial, SNR, and timely resolutions, the required bandwidth to support the MPEG-2 video transmission is determined by analyzing the traced MPEG-2 streams.  ...  MPEG-2 video stream consists of three types of frames, I (Intra coded), P (Predictive coded) and B (Bidirectionally coded) frames.  ... 
doi:10.1007/978-0-387-35170-4_33 fatcat:qmx7c2y6grew3d247lnya5rpgy

Switching Frames for Constant Bit Rate Video Streams

M. Altaf, E. Khan, M. Ghanbari
2009 Proceedings of the 5th International Mobile Multimedia Communications Conference  
For constant bit rate (CBR) coded videos, in which the quantization parameters (QP) are decided on the fly for every macro block, the design of SP-frames becomes difficult due to the multiple (twice) quantizations  ...  In this paper we propose to design SP-frames for CBR coded videos, selecting the QPs in such a way that the varying QP nature of CBR coding is preserved.  ...  DESIGN OF CBR SP-FRAMES In CBR coded video the quantization parameters are calculated for each and every macro block according to the rate distortion optimization.  ... 
doi:10.4108/icst.mobimedia2009.7590 dblp:conf/mobimedia/AltafKG09 fatcat:tsh5ue3oufb7pprjfkcrlcoky4
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