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Issue:
Research of Remote Image Lossly Compression in Control
Author(s):
Zeng Yong
,
Yan Ronghua
Pages:
23
-
27
Year:
2005
Issue:
1
Journal:
CHINESE SPACE SCIENCE AND TECHNOLOGY
Keyword:
信噪比
;
压缩
;
量化
;
遥感图像处理
;
航天遥感
;
Abstract:
在测绘遥感领域,对图像的像质要求较为严格,但即便如此,遥感图像数据中仍然含有噪声,从而有损压缩是可行的.文章在遥感图像信噪分析的基础上,提出了一种遥感图像受控有失真压缩技术.首先分析了遥感图像有失真压缩的可行性;然后应用小波的良好变焦性能,对遥感图像施行2层2维小波的塔式分解;对低频子图进行精细量化,对高频子图进行从粗到精的量化;最后,考察不同的高频量化器对遥感图像的压缩倍率和恢复图像像质的影响.
Citations
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