NDLI: A complexity scalable H.264 decoder with downsizing capability for mobile devices

Content Provider	IEEE Xplore Digital Library
Author	Hyeong-Min Nam Jae-Yun Jeong Keun-Yung Byun Jong-Ok Kim Sung-Jea Ko
Copyright Year	1975
Abstract	It is significantly challenging to playback H.264 compressed video in real time on mobile devices with limited computing power. In this paper, we propose a complexity scalable H.264/AVC decoding algorithm with a downsizing capability, which can offer the complexity scalability by directly decoding the compressed video at a downsized resolution. In the proposed method, the predicted and residual signal can be generated in a downsized resolution by modifying the motion compensation (MC) and the inverse discrete cosine transform (IDCT). As a result, the computational decoding load can be significantly reduced. Moreover, the proposed H.264 decoder can achieve the complexity scalability by adaptively discarding (or simplifying) redundant computations which have larger complexity but less effect on the video quality. Experimental results show that the decoding complexity can be reduced up to 43%, as compared to the conventional H.264/AVC decoder, while maintaining the acceptable video quality.
Sponsorship	IEEE Consumer Electronics Society
File Size	1430141
File Format	PDF
ISSN	00983063
Volume Number	56
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-05-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Decoding Automatic voltage control Scalability Mobile computing Signal resolution Spatial resolution Video compression Signal generators Motion compensation Video coding H.264/AVC decoder, decoding complexity scalability, downscaling, motion compensation, inverse transform
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Media Technology

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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
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