Proceedings Article10.1109/ICIP.1996.560866
Joint coding for multi-program transmission
L. Wang,A. Vincent +1 more
- 16 Sep 1996
- Vol. 2, pp 425-428
13
TL;DR: It is shown that using the same quantization parameter results in bit rates proportional to the program complexities, and guarantees the same upper bound of the coding distortion for all the programs.
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Abstract: This paper presents a method for joint coding of multiple video programs. By exploiting the statistical variations of program content, joint coding achieves a more optimal bit allocation, which results in a better and more uniform overall picture quality. The bit allocation strategy assigns the same quantization parameter to all the programs, and adjusts this quantization parameter from frame to frame so that the total number of bits is within a given bit budget. It is shown that using the same quantization parameter results in bit rates proportional to the program complexities. It is also shown that the use of the same quantization parameter guarantees the same upper bound of the coding distortion for all the programs.
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Citations
Joint rate control for multi-program video coding
Limin Wang Limin Wang,A. Vincent +1 more
- 01 Aug 1996
TL;DR: This paper presents a joint coding scheme for multiprogram video transmission in which the channel capacity is distributed among the programs according to the program complexities.
68
Bit allocation and constraints for joint coding of multiple video programs
Limin Wang,A. Vincent +1 more
TL;DR: This paper examines the bit-allocation issues for joint coding of multiple video programs and provides a bit- allocation strategy that results in a uniform picture quality among programs as well as within a program.
59
Patent
Joint coding method for images and videos with multiple arbitrarily shaped segments or objects
Wenjun Zeng,Jin Li,Shawmin Lei +2 more
- 21 May 2001
TL;DR: In this paper, an adaptive image coding method and system is described, where each segment is assigned to a wavelet transform filter from a bank of such filters for transformation, and each filter produces transform coefficients for its segment using scale and subband settings common to the entire image.
50
Joint transcoding of multiple MPEG video bitstreams
H. Sorial,W.E. Lynch,A. Vincent +2 more
- 30 May 1999
TL;DR: It is shown that joint transcoding reduces the quality variation between multiple video sequences, as compared to independently transcoding each sequence at a fixed bit rate, which results in a better utilization of the channel capacity.
28
Bit allocation for joint coding of multiple video programs
Limin Wang,Andre Vincent +1 more
- 09 Jun 1997
TL;DR: The bit allocation issue for joint coding is studied and a dynamic bit allocation strategy for achieving uniform picture quality among programs as well as within each program is formulates.
10
References
Rate control for MPEG video coding
TL;DR: A new rate control approach which addresses the problems associated with degradation in picture quality at scene cuts and nonuniform picture quality due to buffer-dependent variations of the quantization parameter is presented.
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