DocumentCode
3498952
Title
Context based coding of quantized alpha planes for video objects
Author
Aghito, Shankar Manuel ; Forchhammer, Soren
Author_Institution
Res. Center COM, Tech. Univ. Denmark, Lyngby, Denmark
fYear
2002
fDate
9-11 Dec. 2002
Firstpage
101
Lastpage
104
Abstract
In object based video, each frame is a composition of objects that are coded separately. The composition is performed through the alpha plane that represents the transparency of the object. We present an alternative to MPEG-4 for coding of alpha planes that considers their specific properties. Comparisons in terms of rate and distortion are provided, showing that the proposed coding scheme for still alpha planes is better than the algorithms for I-frames used in MPEG-4.
Keywords
rate distortion theory; video coding; MPEG-4; context based coding; minimum code length context quantization; object transparency; piecewise-constant image model; quantized alpha planes; video objects; Arithmetic; MPEG 4 Standard; Noise generators; Noise shaping; Quantization; Rate distortion theory; Rate-distortion; Shape; Telephony; Video sequences;
fLanguage
English
Publisher
ieee
Conference_Titel
Multimedia Signal Processing, 2002 IEEE Workshop on
Print_ISBN
0-7803-7713-3
Type
conf
DOI
10.1109/MMSP.2002.1203258
Filename
1203258
Link To Document