公开(公告)号：US08836810B2

公开(公告)日：2014-09-16

申请号：US13693385

申请日：2012-12-04

Applicant: Technion Research and Development Foundation Ltd.

Inventor： Yoav Schechner ,  Tali Treibitz

IPC: H04N5/228 ,  H04N5/235 ,  G09B9/00 ,  G06T5/00 ,  G06T5/50 ,  H04N5/232

CPC classification number: H04N5/23232 ,  G06T5/007 ,  G06T5/50 ,  G06T2207/30232

Abstract: A system and method are provided for imaging in scattering media such as fog, water and biological tissues. Normally, such images suffer from poor visibility due to backscattering and signal attenuation. At least two images are taken of the scene using active widefield polarized illumination, with different states of a camera-mounted polarizer. The degree of polarization of backscatter is estimated in every point of the scene, leading to an estimation of the backscatter in every point of the scene. A portion or all of the value of backscatter can be deducted in each point of the scene resulting in an enhanced image with improved contrast and brightness range across the field of view.

Abstract translation: 提供了用于在诸如雾，水和生物组织的散射介质中成像的系统和方法。 通常，由于后向散射和信号衰减，这些图像的可见性差。 使用有源宽带偏振照明拍摄场景中至少两幅图像，具有相机安装式偏振器的不同状态。 在场景的每个点估计反向散射的偏振度，导致对场景的每个点的反向散射的估计。 背景散射值的一部分或全部可以在场景的每个点被扣除，从而产生具有改善的整个视场对比度和亮度范围的增强图像。