NDLI: Spatial flicker effect in video scaling

Content Provider	IEEE Xplore Digital Library
Author	Pengpeng Ni Eg, R. Eichhorn, A. Griwodz, C. Halvorsen, P.
Copyright Year	2011
Description	Author affiliation: Simula Research Laboratory, Norway (Pengpeng Ni; Eg, R.; Eichhorn, A.; Griwodz, C.; Halvorsen, P.)
Abstract	Scalable video streaming may result in flicker effects — visual artifacts in video presentation due to adaptive layer switching. In our work, we have identified three types of flicker, noise, blur and motion flicker. Here, we investigate the blur and noise flicker, which are both related to the spatial domain. The perceptual impact of blur and noise flicker is explored through subjective assessments, focusing on acceptance of variations in the amplitudes and frequencies of the quality changes, across four content types. Our results indicate that the perception and acceptance of different layer variations are jointly influenced by multiple factors. When video scaling is required, frequency can be adjusted to relieve the annoyance of flicker artifacts, while amplitude still plays the dominant role in delivering satisfactory video quality. In addition, contents with complex details are more affected by blur flicker than other contents. This difference is not observed for noise flicker.
Starting Page	55
Ending Page	60
File Size	189242
Page Count	6
File Format	PDF
ISBN	9781457713330
e-ISBN	9781457713354
e-ISBN	9781457713347
DOI	10.1109/QoMEX.2011.6065712
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-09-07
Publisher Place	Belgium
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Measurement Visualization Video adaptation Switches Subjective video quality Streaming media Layer switching Spatial resolution Signal to noise ratio
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

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