Underwater Laser Imaging Target Detection Technology

Since underwater target echo detection method can not gain characters such as target contour and shape, it is difficult to detect it. Imaging target detection can overcome the difficulty. But imaging is a complex process and the acquired images have complicated background and low signal to noise ratio. Aimed at these, imaging detection experiment is developed and laser images are acquired. Moreover, target detecting methods based on correlation analysis, K-L transform, morphology and fraction are proposed. Experiments proved that these methods could efficaciously detect small weak underwater target in complex background.