Document Type
Article
Journal/Book Title/Conference
1999 IEEE International Conference on Acoustics, Speech, and Signal Processing
Volume
6
Publisher
IEEE
Location
Phoenix, AZ
Publication Date
3-1999
First Page
3369
Last Page
3372
Abstract
We describe a method of using a Lagrange multiplier to make a locally optimal trade off between rate and distortion in the motion search for video sequences, while maintaining a constant bit rate channel. Simulation of this method shows that it gives up to 3.5 dB PSNR improvement in a high motion sequence. A locally rate-distortion (R-D) optimal mode selection mechanism is also described. This method also gives significant quality benefit over the nominal method. Though the benefit of these techniques is significant when used separately, when the optimal mode selection is combined with the R-D optimal motion search, it does not perform much better than the codec does with only the R-D optimal motion search.
Recommended Citation
C. B. Peel, S. E. Budge, K. Liang, and C.-M. Huang, “Locally optimal, buffer-constrained motion estimation and mode selection for video sequences,” in Proc. IEEE Int. Conf. Acoustics, Speech, and Signal Processing (ICASSP), vol. 6, IMDSP-7.7. IEEE, Mar. 1999, pp. 3369–3372
