Relation between bitrate, motion and framerate for scoring of image sequences

Mohamed-Chaker Larabi; Louise Quoirin

doi:10.1117/12.766659

28 January 2008 Relation between bitrate, motion and framerate for scoring of image sequences

Mohamed-Chaker Larabi, Louise Quoirin

Proceedings Volume 6808, Image Quality and System Performance V; 680815 (2008) https://doi.org/10.1117/12.766659
Event: Electronic Imaging, 2008, San Jose, California, United States

Abstract

The quality of encoded image sequences is often assessed by a subjective test. Depending of the test paradigm used in the subjective campaign the observer get as much time as he needs to find a stable result. In video sequences, three parameters have to be managed carefully: the bitrate, the frame-rate and the motion contained in video itself. Therefore it is desirable to know the relation between the frame rate, the motion, the bitrate and the quality. This study aims to allow the selection of coherent contents for the subjective assessment experiments. For example, at which frame-rate a sequence has to be displayed in order to have a correct judgment of its quality. The image sequences were presented with five different frame-rates ranging from 10 to 40 and four bitrates ranging between 0.12bpp and 0.32bpp. The video sequences were chosen with regards to their motion quantity. The motion has been characterized using the specification of MPEG-7 in order to organize the optical flux in several classes. Special care was taken to avoid the memorization effect usually present after short presentations.

Citation Download Citation

Mohamed-Chaker Larabi and Louise Quoirin "Relation between bitrate, motion and framerate for scoring of image sequences", Proc. SPIE 6808, Image Quality and System Performance V, 680815 (28 January 2008); https://doi.org/10.1117/12.766659

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available