Dolin L S, Turlaev D G
Appl Opt. 2020 Jul 1;59(19):5772-5778. doi: 10.1364/AO.394082.
The possibility of improving imaging of the bottom of a water body by suppressing an inhomogeneous light background that occurs as a result of skylight reflection from the water surface and being superimposed on the bottom image is theoretically studied. It is shown that the radiance of this background can be reduced by a polarization filter and the correct choice of the imaging direction. It has been determined how the optimal directions of the bottom imaging with a Polaroid and without it depend on the Sun's position. The possibility of expanding the bottom swath by about 2 times due to joint use of its imaging facilities in polarized and nonpolarized light is proved. Photographs that demonstrate the effect of improving the bottom imaging with a Polaroid are presented.
从理论上研究了通过抑制由于水面反射天空光并叠加在水底图像上而产生的不均匀光背景来改善水体底部成像的可能性。结果表明，这种背景的辐射可以通过偏振滤光片和正确选择成像方向来降低。已经确定了使用偏光片和不使用偏光片时水底成像的最佳方向如何取决于太阳的位置。证明了由于在偏振光和非偏振光中联合使用成像设备，将水底扫描带扩大约2倍的可能性。还展示了一些照片，这些照片展示了使用偏光片改善水底成像的效果。
