An Efficient Adaptive Rate Control for JPEG2000 in Digital Cinema Encoding System[J]. Journal of Image and Graphics, 2008, 13(1): 40. DOI: 10.11834/jig.20080108.
Abstract:Digital Cinema encoding system based on DCI specification has special constraints on the bit-rate and image quality of image sequences. In this paper
it is shown that for a given average bit-rate
the average distortion of the image sequence is minimized
when the image quality is constant. A simple and efficient adaptive rate control method is proposed
which is based on the PCRD-opt(post-compression rate-distortion optimization) rate control algorithm of JPEG2000. Without additional computations
the method could meet the rate and quality constraints. The experiment results show that the proposed method is efficient for different types of image sequences
and it suits for the Digital Cinema encoding system.