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 …

A plenoptic cameras is a sensor that records the 4D light-field distribution of target scenes.
The surface errors of a microlens array (MLA) can cause the degradation and distortion of …

Abstract The Monte Carlo method (MCM) is one of the most accurate methods for calculating
the optical characteristics of spatial targets. However, there are two limitations when using …

In micro-lens-array-based light-field imaging, the micro-lens centers serve as the origins of
local micro-lens coordinate systems. Each micro-lens receives angular/depth information …

The full-spectrum k-distribution (FSK) method and Generalized Multiparticle Mie-solution
(GMM) method are applied to study the influences of soot aggregation on the radiative heat …

Microlens array (MLA) errors in plenoptic cameras can cause the confusion or mismatching
of 4D spatio-angular information in the image space, significantly affecting the accuracy and …

Rays hit droplets in the transmission path on severe weather conditions such as rain and fog
during the target optical detection process. The presence of droplets causes the directions of …

Plenoptic imaging (PI) systems can flexibly record both spatial and angular information on
flame radiation, enabling volumetric reconstruction of complex flames. The accuracy and …

Plenoptic imaging systems can acquire spatio-angular information of light rays, allowing
complex scene measurements with a single exposure. The measurement accuracy is …

A plenoptic optical system for microscopy comprises an objective lens, tube lens, microlens
array (MLA), and an image sensor. Numerical aperture (NA) matching between the tube lens …