Title :
On the effectiveness of natural videos in masking dynamic DCT noise
Author :
Evert, Jeremy ; Chandler, David L.
Author_Institution :
Lab. of Comput. Perception & Image Quality (CPIQ), Oklahoma State Univ., Stillwater, OK, USA
Abstract :
A fundamental understanding of what makes distortions harder to detect in videos can benefit efforts in video processing. We present the results of a study which extends the work of Watson et al. [J. Electronic Imaging, 2001], to investigate masking of dynamic DCT distortions by eight natural videos. Distortions ranged from 0-60 Hz in temporal frequency and from 2-22.6 c/deg in spatial frequency. Our results revealed that detection thresholds are jointly influenced by the spatiotemporal characteristics of the distortion and by the spatiotemporal characteristics of the video. We discuss the implications of these results for video coding and quality assessment.
Keywords :
discrete cosine transforms; distortion; natural scenes; spatiotemporal phenomena; video signal processing; dynamic DCT distortions; dynamic DCT noise; frequency 0 Hz to 60 Hz; masking; natural videos; quality assessment; spatial frequency; spatiotemporal characteristics; temporal frequency; video coding; video processing; Discrete cosine transforms; Face; Frequency modulation; Noise; Observers; Standards; Videos;
Conference_Titel :
Signals, Systems and Computers, 2013 Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
978-1-4799-2388-5
DOI :
10.1109/ACSSC.2013.6810512
