A Content-based Video Rate-control Algorithm Interfaced to Human-eye 


Vol. 28,  No. 3, pp. 307-314, Mar.  2003


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  Abstract

In the general multiple video object coder, more interested objects such as speaker or moving object is consistently coded with higher priority. Since the priority of each object may not be fixed in the whole sequence and be variable on frame basis, it must be adjusted in a frame. In this paper, we analyze the independent rate control algorithm and global algorithm that the QP value is controled by the static parameters, object importance or priority, target PSNR, weighted distortion. The priority among static parameters is analyzed and adjusted into dynamic parameters according to the visual interests or importance obtained by camera interface. Target PSNR and weighted distortion are proportionally derived by using magnitude, motion, and distortion. We apply these parameters for the weighted distortion control and the priority-based control resulting in the efficient bit-rate distribution.
As results of this paper, we achieved that fewer bits are allocated for video objects which has less importance and more bits for those which has higher visual importance. The duration of stability in the visual quality is reduced to less than 15 frames of the coded sequence. In the aspect of PSNR, the proposed scheme shows higher quality of more than 2dB against the conventional schemes. Thus the coding scheme interfaced to human-eye proves an efficient video coder dealing with the multiple number of video objects.

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  Cite this article

[IEEE Style]

J. Hwang, K. Jin, C. Hwang, "A Content-based Video Rate-control Algorithm Interfaced to Human-eye," The Journal of Korean Institute of Communications and Information Sciences, vol. 28, no. 3, pp. 307-314, 2003. DOI: .

[ACM Style]

Jae-Jeong Hwang, Kyung-Sik Jin, and Chi-Gyu Hwang. 2003. A Content-based Video Rate-control Algorithm Interfaced to Human-eye. The Journal of Korean Institute of Communications and Information Sciences, 28, 3, (2003), 307-314. DOI: .

[KICS Style]

Jae-Jeong Hwang, Kyung-Sik Jin, Chi-Gyu Hwang, "A Content-based Video Rate-control Algorithm Interfaced to Human-eye," The Journal of Korean Institute of Communications and Information Sciences, vol. 28, no. 3, pp. 307-314, 3. 2003.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880