题名海底水声图象处理:算法研究与硬件设计
作者徐文
学位类别博士
答辩日期1993
授予单位中国科学院声学研究所
授予地点中国科学院声学研究所
关键词图象声呐 水声图象 图象处理 数字信号处理器
其他题名Sea Bottom Sonar Image Processing: Algorithm study and Hardware Design
中文摘要本文从水声成象的物理背景分析出发,对海底水声图象的预处理、图象分割、图象压缩等进行了研究,获德如下结果:1)采用中值滤波对水声图象进行预处理,可以有效地消除图象中的噪声;2)提出了一种在阈值选择的基础上,通过动态搜索和区域生长,将水声图象分割成反映声图特征的连通子域的方法:3)采用自适应的余弦变换编码,在较小的失真条件下,水声图象的编码压缩率达40:1,同时,设计了以TMS320C30为核心的高速数字信号处理板,将上述算法在该板上实现,最后,针对无缆水下机器人(AUV)应用的具体背景,给出了AUV中水声同乡处理系统的设计。
英文摘要In this paper, some underwater sonar image processing alforithm including image preprocessing, image segmentation, image compression are studied on the basis of the physical background analyzing of underwater sonar imaging. Median filter is used to decrease the effects of noises and shows good results. An image segmentation algorithm based on grey level thresholding, dynamic searching and region growing is put forward. Several transforms are tested to the sonar images. The results show that the performance of DCT is the best. Moreover, an adaptive algorithm based on the statistics of transform block is developed and high compression ratio is obtained due to less of details in sonar images. A high-speed single board DSP system based on TMS320C30 is designed and the above-mentioned algorithm are realized in this system. Finally, an underwater sonar image processing system for Autonomous Underwater Vehicle(AUV) is presented.
语种中文
公开日期2011-05-07
页码40
内容类型学位论文
源URL[http://159.226.59.140/handle/311008/1228]  
专题声学研究所_声学所博硕士学位论文_1981-2009博硕士学位论文
推荐引用方式
GB/T 7714
徐文. 海底水声图象处理:算法研究与硬件设计[D]. 中国科学院声学研究所. 中国科学院声学研究所. 1993.
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