摘要
水下声呐成像探测技术日益成为各国普遍重视的技术。声呐图像具有对比度低、成像质量差的特点,对声呐图像进行增强处理是进行声呐图像判读和提高视觉效果的基础之一。针对声呐图像增强算法研究较少等问题,提出了一种迭代阈值图像增强算法,并采用评价准则算法和频域响应法对常用的几种图像增强算法进行比较分析。结果表明,该方法具有算法简单、易于实现等特点,且增强效果可较好地满足视觉效果的需求。
The underwater detection technology based on sonar image has been attached importance by many countries. Sonar image has some characteristics such as low contrast and bad imaging quality, the image enhancement process is the basement of deep understand- ing to sonar image. Aiming at problems in current study of sonar image enhancement, a new enbancement method based iterafive threshold was presented, the criterion function and frequency response were used to evaluate and compare current image enhancement arithmetic. Resuhs indicate that the method presented in this paper has characteristics of simplness and be prone to realization, its enhanced effect can satistied the visual requirement.
出处
《舰船电子工程》
2006年第2期154-157,共4页
Ship Electronic Engineering
关键词
迭代阈值
图像增强
效果评价
声纳图像
iterative threshold, image enhancement, effect evaluation, sonar image
