High speed imaging system and method based on pixel optimization coding exposure

一种基于像元优化编码曝光的高速成像系统及方法

Abstract

The invention belongs to the field of optics, and particularly relates to a high speed imaging system and method based on pixel optimization coding exposure. The system comprises an objective lens, a first relay lens, a polarization beam splitter, a second relay lens, a spatial light modulator, a third relay lens and an imaging sensor. The objective lens, the first relay lens, the polarization beam splitter, the second relay lens and the spatial light modulator are arranged on a natural light optical axis in sequence. The third relay lens and the imaging sensor are arranged above the polarization beam splitter in sequence. According to the system, a single frame coding exposure image I containing multi-frame imaging information can be obtained. Through studying random videos, an excessive complete dictionary D is obtained, then a restructing algorithm is used, a coefficient alpha is solved, and at last a high resolution multi-frame video image E is obtained. The system and method can avoid the hardware limit on an existing imaging sensor and achieve high speed and high resolution imaging.
本发明属于光学领域,具体涉及一种基于像元优化编码曝光的高速成像系统及方法。该系统包括物镜、第一中继透镜、偏振分束器、第二中继透镜、空间光调制器、第三中继透镜和图像传感器;物镜、第一中继透镜、偏振分束器、第二中继透镜、空间光调制器依次设置在自然光的光轴上;第三中继透镜和图像传感器依次设置在偏振分束器的上方;通过该系统可以获得包含多帧图像信息的单帧编码曝光图像I;通过学习随机视频,得到过完备字典D,在采用重构算法,解算出系数α,最终得到高分辨率多帧视频图像E。本发明的系统及方法能够避免目前图像传感器的硬件限制,最终实现高速高分辨率成像。

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