Depth from defocus with learned optics for imaging and occlusion-aware depth estimation

H Ikoma, CM Nguyen, CA Metzler… - 2021 IEEE …, 2021 - ieeexplore.ieee.org
Monocular depth estimation remains a challenging problem, despite significant advances in
neural network architectures that leverage pictorial depth cues alone. Inspired by depth from …

Animat vision

DH Ballard - Computer vision: A reference guide, 2021 - Springer
Background Three main ingredients of action research are visual features, machine learning
methodology, and datasets. Recent years have witnessed a tremendous increase in …

Defocus map estimation and deblurring from a single dual-pixel image

S Xin, N Wadhwa, T Xue, JT Barron… - Proceedings of the …, 2021 - openaccess.thecvf.com
We present a method that takes as input a single dual-pixel image, and simultaneously
estimates the image's defocus map---the amount of defocus blur at each pixel---and …

A guided edge-aware smoothing-sharpening filter based on patch interpolation model and generalized gamma distribution

G Deng, F Galetto, M Al–nasrawi… - IEEE Open Journal of …, 2021 - ieeexplore.ieee.org
Smoothing and sharpening are two fundamental image processing operations. The latter is
usually related to the former through the unsharp masking algorithm. In this paper, we …

[HTML][HTML] Novel application of multispectral refraction topography in the observation of myopic control effect by orthokeratology lens in adolescents

NJ Ni, FY Ma, XM Wu, X Liu, HY Zhang… - World Journal of …, 2021 - ncbi.nlm.nih.gov
BACKGROUND Myopia, as one of the common ocular diseases, often occurs in
adolescence. In addition to the harm from itself, it may also lead to serious complications …

Region-based depth feature descriptor for saliency detection on light field

X Wang, Y Dong, Q Zhang, Q Wang - Multimedia Tools and Applications, 2021 - Springer
This paper addresses the light field saliency detection problem via a multiple cue integration
framework. By reinterpreting the usage of dark channels in estimating the amount of …

[HTML][HTML] A fast shape-from-focus-based surface topography measurement method

J Gladines, S Sels, J Blom, S Vanlanduit - Sensors, 2021 - mdpi.com
Shape from focus is an accurate, but relatively time-consuming, 3D profilometry technique
(compared to eg, laser triangulation or fringe projection). This is the case because a large …

Mathematical Principles of Object 3D Reconstruction by Shape-from-Focus Methods

D Martišek, K Mikulášek - Mathematics, 2021 - mdpi.com
Shape-from-Focus (SFF) methods have been developed for about twenty years. They able
to obtain the shape of 3D objects from a series of partially focused images. The plane to …

Imaging or measurement methods and systems

R Piestun, A Agrawal, S Quirin, A Barsic… - US Patent …, 2021 - Google Patents
Imaging or measurement methods and systems including methods and systems for finding
the three-dimensional orientation and position of multiple dipole-like particles and single …

Exploring chromatic aberration and defocus blur for relative depth estimation from monocular hyperspectral image

A Zia, J Zhou, Y Gao - IEEE Transactions on Image Processing, 2021 - ieeexplore.ieee.org
This article investigates spectral chromatic and spatial defocus aberration in a monocular
hyperspectral image (HSI) and proposes methods on how these cues can be utilized for …