Aiming at problems in current study of sonar image enhancement, a new enhancement method based iterative threshold was presented, the criterion function and frequency response were used to evaluate and compare current image enhancement arithmetic. 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。
The new type of image scanner has higher frequency response and the scan with high speed can be realized. 新型图像扫描器具有较高的响应频率,可以实现高速扫描。