舰载无人机系统图像信息分级压缩/解压缩技术分析

针对舰载无人机载图像实时传输系统的要求，提出了一套采用整数小波变换和改进嵌入式零树编码、分级压缩，／解压缩的图像编码系统方案，对非感兴趣的大面积海面区域采用较高的压缩比，而对于感兴趣的目标区域采用相对较低的压缩比，这样既能大大减少数据的实时传输量，又能对目标识别等重要军事任务有很好的效果。

Image Graded Compression /Decompression of Shipborne UAV System

Aiming at the requirement for the real-time image transmission system of shipborne UAV system,an integer wavelet transform algorithm with modified embedded zerotree wavelet coder(EZW) and graded compression / decompression is introduced to compress images.That system adopts higher compression ratio to nointeresting large sea area,and adopts relatively lower compression ratio to the interesting goal area.In this way,that system not only reduces datum amount to benefit for real-time transmission greatly,but also can achieve good results in the important military tasks such as object recognition.