Izvorni znanstveni članak
https://doi.org/10.24138/jcomss.v6i2.189
Objective and Subjective Evaluation of Spatially Transcoded Videos for Mobile Receivers
Carlos D. M. Regis
orcid.org/0000-0002-3555-0024
; Federal University of Campina Grande (UFCG), Campina Grande, Brazil
Raissa B. Rocha
; Federal University of Campina Grande (UFCG), Campina Grande, Brazil
Mylene C. Q. Farias
; University of Brasilia (UnB), Bras´ılia, Brazil
Marcelo S. Alencar
orcid.org/0000-0002-2849-1644
; Federal University of Campina Grande (UFCG), Campina Grande, Brazil
Sažetak
Digital television produces video signals with different bit rates, encoding formats, and spatial resolutions. To deliver video to users with different receivers, the content needs to be dynamically adapted. Transcoding devices convert video from one format into another. The reception of digital videos using mobile receivers, implies that the spatial resolution of the video must be adjusted to fit the small display. This paper presents subjective and objective quality analysis of spatially transcoded videos. Transcoding algorithms that downsample the video frames using the moving average, median, mode, weighted average and sigma filters are considered.
Ključne riječi
Mobile TV; Performance evaluation; Video coding and processing; Transcoding
Hrčak ID:
180402
URI
Datum izdavanja:
22.6.2010.
Posjeta: 697 *