Effective rate control method for minimizing temporal fluctuations in picture quality applicable for MPEG-4 AVC/H.264 encoding

Appropriate rate control plays a very important role in encoding motion pictures under the constant bit-rate. One of the requirements for rate control is minimizing temporal fluctuations in picture quality, which may cause flicker artifacts. To satisfy the requirement, some methods for MPEG-1 and MP...

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Bibliographic Details
Main Authors: Matsumura, A., Naito, S., Kawada, R., Koike, A.
Format: Conference Proceeding
Language:English
Subjects:
Automatic voltage control
Discrete cosine transforms
Encoding
Fluctuations
Motion control
Motion pictures
MPEG 4 Standard
Optimization methods
Quadratic programming
Quantization
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Summary:Appropriate rate control plays a very important role in encoding motion pictures under the constant bit-rate. One of the requirements for rate control is minimizing temporal fluctuations in picture quality, which may cause flicker artifacts. To satisfy the requirement, some methods for MPEG-1 and MPEG-2 have been proposed. However, these methods cannot be applied to the H.264 encoding algorithm based on R-D optimization since they require the DCT coefficients and the accurate output bit amount for each quantization parameter of a current picture in advance. To overcome the problem, we propose a rate control method to satisfy the requirement in the H.264 encoding algorithm by introducing approximations to estimate the bit amount and the distortion.
ISSN:1522-4880
2381-8549
DOI:10.1109/ICIP.2005.1529814