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题名:
Rate pre-allocated compression for mapping image based on wavelet and rate-distortion theory
作者: Li, Qihu1; Ren, Guoqiang1; Wu, Qinzhang1; Zhang, Xianyu1,2
刊名: OPTIK
出版日期: 2013
卷号: 124, 期号:14, 页码:1836-1840
关键词: Integer wavelet transform ; Bit rate pre-allocated ; Image coding ; FPGA ; Multiple DSP
文章类型: Article
英文摘要: In order to solve the problem that the general image compression algorithm and the running speed based on single DSP or PC cannot satisfied the demand for high-resolution mapping real-time image compression, this paper proposed a low-complexity rata pre-allocated algorithm and an implement mode. Firstly, the multi-level integer wavelet applied to image. Secondly, depend on the principle that various subband important to image reconstruction, and the optimal rate-distortion theory, pre-allocated the actual contribution rate in the coding for the each sub-band. Lastly, when each sub-band has been coded, the coding have been truncated in real-time according to the pre-allocated rate, so the bit rate size of the compressed image has been controlled precisely. Test results show that this paper proposed algorithm which has more features than the other classical standard compression algorithm. The features include less calculation, less usage of storage space, and simple structure of the bit rate stream. The algorithm with low complexity but the same compression performance as the JPEG2000 standard is significantly better than SPIHT and other algorithms. Finally, the algorithm proposed in this paper has been realizes in real-time by many DSP and FPGA. (C) 2012 Elsevier GmbH. All rights reserved.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Optics
研究领域[WOS]: Optics
收录类别: SCI
语种: 英语
WOS记录号: WOS:000321598000035
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/1199
Appears in Collections:光电技术研究所被WoS收录文章_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Opt & Elect, Chengdu, Peoples R China
2.Max Planck Inst Astron, D-69117 Heidelberg, Germany

Recommended Citation:
Li, Qihu,Ren, Guoqiang,Wu, Qinzhang,et al. Rate pre-allocated compression for mapping image based on wavelet and rate-distortion theory[J]. OPTIK,2013,124(14):1836-1840.
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