基于波片调制法水下偏振成像技术研究(特邀)

Underwater Polarization Imaging Technology Based on Wave Plate Modulation(Invited)

为了更好地对海洋牧场水下环境及海珍品进行监测,通过532 nm激光光源与波片调制相结合的方法集成了一套水下偏振成像系统,并使用米勒矩阵法对偏振图像进行处理。以海参为目标物并模拟海洋牧场水体环境进行了实验,通过成像系统获取偏振图像后,依据推导出的米勒矩阵公式进行图像融合。通过对比融合后的米勒矩阵图像和原图像对比度、信息熵等参数,证明米勒矩阵法能够有效地消除背景散射光的影响,提高成像对比度,进而提高成像质量。

In order to better monitor the underwater environment and seafood in marine pastures,an underwa-ter polarization imaging system is integrated by combining a 532 nm laser light source with wave sheet modulation,and the polarization image is processed by Miller matrix method.The experiment takes sea cucumber as the target and simulates the water environment of Marine pasture.After obtaining the polarization image through the imaging system,image fusion is performed according to the derived Miller matrix formula.By comparing the contrast and in-formation entropy between the fused Miller matrix image and the original image,it is proved that the Miller matrix method can effectively eliminate the influence of background scattered light to improve the imaging contrast and quality.