摘要
基于水下距离选通激光成像技术,利用选通成像中回波强度相变化特性中包含的距离信息,提出了一种针对水下目标的三维成像方法。结合实验室现有的水下距离选通激光成像系统,对15 m处的水下目标进行了三维成像。这一方法有效抑制了水下成像系统中存在的目标表面材质、水体衰减以及目标各点法线方向与入射激光脉冲方向夹角不同等因素对于三维成像造成的不良影响,同时仅需要从单一方向对目标进行成像,减少了所需图像采集的次数,简化了三维重构的过程。
According to the distance information in phase change characteristics of laser echo intensity in range-gated imaging system, a three dimensional imaging method for underwater target was presented. Combined with underwater range-gated laser imaging system in the laboratory,3-D images of the underwater target with a 15m distance was a- chieved. This method can effectively restrain some adverse impacts that caused by target surface materials, water atten- uation, the angle between the direction of incident laser pulse and the normal direction of target surface. This method doesn＇t need to change the direction of observation ,reduces the collection times of required image, and simplifies the 3-D imaging process.
出处
《激光与红外》
CAS
CSCD
北大核心
2016年第11期1315-1319,共5页
Laser & Infrared
关键词
水下目标
距离选通
三维成像
underwater target
ranged-gated
3-D imaging
