NDLI: Fast Intra Prediction Mode Decision by Adaptively Selecting Fewer Number of Modes

Content Provider	IEEE Xplore Digital Library
Author	Jamil-Ur-Rehman Zhang Ye Kumarayapa, A.
Copyright Year	2007
Description	Author affiliation: Harbin Inst. of Technol., Harbin (Jamil-Ur-Rehman; Zhang Ye; Kumarayapa, A.)
Abstract	Enhanced Intra and Inter prediction techniques are the key factors to the success of H.264. There are a total of nine optional prediction modes for each 4 x 4 luma block. H.264 adapts Rate Distortion Optimization (RDO) technique to get high coding rate and visual quality. Because RDO is too much exhaustive, several attempts have been made to explore fast algorithms. The choice of intra prediction mode for each 4 x 4 block must be signaled to the decoder and this could potentially require a large number of bits. However, intra modes for neighbouring 4 x 4 blocks are often correlated. To take advantage of this correlation, predictive coding is used to signal 4 x 4 intra modes. But still large number of bits is required to signal nine intra prediction modes. We adaptively selected only five modes; selection of modes depends on the position of 4 x 4 block in the slice or frame. After experimental results we have come to know that the increase in the number of bits for encoding residual coefficients is approximately same as decrease in the number of bits required to signal intra prediction modes, providing same PSNR (peak signal to noise ratio). By using proposed technique, computational speed increased by ap45% without significant performance degradation.
Starting Page	2385
Ending Page	2389
File Size	556757
Page Count	5
File Format	PDF
ISBN	9781424409723
DOI	10.1109/ICMLC.2007.4370544
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-08-19
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Encoding PSNR Decoding Predictive coding Degradation Bit rate Machine learning Cybernetics Electronic mail Rate-distortion Signaling mode numbers H.264 Intra prediction Mode decision
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in