Random microlens arrays (rMLAs) have been widely applied as a beam-shaping
component within an optical system. Silica glass is undoubtedly the best choice for rMLAs …

Abstract We propose an Otsu-Kmeans gravity-based center extraction method for multi-spot
images captured by the microlens array imaging system. We develop a 4-connected-region …

Large curvature aspheric optical elements are widely used in visual system. But its
morphological detection is very difficult because its accuracy requirement is very high. When …

The centroid estimation of the beacon spot is crucial to the pointing, acquisition, and tracking
subsystem in inter-satellite optical wireless communication (IsOWC), especially for the …

Circle extraction is usually a pre-completed task used in different applications related to
medical, robotics, biometrics image analysis among others. Randomized Hough Transform …

摘要当光通信系统中的光斑能量在大气信道影响下呈现非理想高斯分布时, 光斑中心位置便难以
准确定位, 从而降低了光通信系统的稳定性. 为了解决这一问题, 本文提出了一种光斑中心网格化 …

The miniaturized and integrated microlens array (MLA) can effectively achieve the beam
homogenization, compactness and miniaturization of laser systems. When the high …

In order to improve the measurement accuracy of subgrade settlement deformation system,
this study proposes a high-precision, online monitoring system for subgrade settlement …

The Gaofen-7 (GF-7) satellite is equipped with two area array sensor footprint cameras to
capture the laser altimeter spot. In order to establish a direct correspondence between the …

In order to improve the accuracy of sub-pixel grayscale centroid extraction for noise-
containing spot images, an image denoising method based on low-rank and sparse …