19 October 2012 The rate control scheme for JPEG-LS with high bitrate
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Abstract
JPEG-LS is an ISO/ITU lossless/near-lossless compression standard for continuous-tone images with both low complexity and good performance. However, the lack of rate control in JPEG-LS makes it unsuitable for applications, which have the requirement of the compression to a pre-specified size for purpose of effective storage management or effective bandwidth management. This paper proposes an efficient rate control scheme for JPEG-LS with a high bitrate. It is based on a good relationship for the optimal quantization steps of different slices and a good relationship for the optimal target bitrates of different slices. Comparing with the most previous JPEG-LS with rate control schemes, the proposed rate control scheme has a uniform performance for the whole image, and it is more suited for the near-lossless compression, but the most previous JPEG-LS with rate control schemes have the non-uniform performance. The experimental results show that the proposed rate control scheme achieves better compression performance for remote sensing compression with a high bitrate.
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Jing Zhang, Jing Zhang, Yunsong Li, Yunsong Li, Kai Liu, Kai Liu, Jie Guo, Jie Guo, } "The rate control scheme for JPEG-LS with high bitrate", Proc. SPIE 8514, Satellite Data Compression, Communications, and Processing VIII, 85140T (19 October 2012); doi: 10.1117/12.929583; https://doi.org/10.1117/12.929583
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