遥感图像的自适应混合压缩编码

遥感图像的巨大信息量,给图像存贮、记录、传输和处理带来很大的困难。尤其是在微机上进行图像处理,这一问题更为突出。图像压缩编码技术是解决问题的主要途径。但是,文献介绍的一些常用的图像压缩编码方法,大多会导致信息量的减少,有的不适用于遥感图像,或者方法不容易实现。本文提出的图像的自适应混合压缩编码方法,吸收了几种压缩编码方法的优点,基于图像的空间相关性和局部均匀程度,对图像进行压缩编码,方法不仅容易实现,而且有较高的图像数据压缩效果,压缩比一般能达到2左右。自适应图像混合压缩编码方法属于冗余度压缩,不导致信息量的任何减少。

ADAPTIVE MIXED COMPRESSION CODING FOR REMOTE SENSING IMAGE

The huge information content of the remote sensing image bring on the great difficulty in the storage.record.transfer and processing for the image. Particularly, when the image processing operate in a micro-computer, the problem is more projecting. Technology of the image compression coding is a main way to resolve the problem. However, a number of the common in methods for image compression coding that are introduced by the literature, most of them bring about the reduction of the information content, a number of them can't suit the remote sensing image, otherwise, the realizing of methods is difficulty. This paper presents the method of adaptive mixed compression coding for image. The method absorbs the advantage for the several means of compression coding. It carry on the compression coding for an image, base on the spatial correlativity and local even level of the image. The method is both to realize easily and has the better effect for the image data compression. Generally, the compression ratio can attain about 2 .0. The method,of adaptive mixed compression coding belongs the redundance compression. It doesn't bring about the information to reduce.