Defocus map estimation from a single image

S Zhuo, T Sim - Pattern Recognition, 2011 - Elsevier
In this paper, we address the challenging problem of recovering the defocus map from a
single image. We present a simple yet effective approach to estimate the amount of spatially …

Depth recovery from light field using focal stack symmetry

H Lin, C Chen, SB Kang, J Yu - Proceedings of the IEEE …, 2015 - openaccess.thecvf.com
We describe a technique to recover depth from a light field (LF) using two proposed features
of the LF focal stack. One feature is the property that non-occluding pixels exhibit symmetry …

Spatially-varying blur detection based on multiscale fused and sorted transform coefficients of gradient magnitudes

S Alireza Golestaneh, LJ Karam - Proceedings of the IEEE …, 2017 - openaccess.thecvf.com
The detection of spatially-varying blur without having any information about the blur type is a
challenging task. In this paper, we propose a novel effective approach to address this blur …

Computational cameras: convergence of optics and processing

C Zhou, SK Nayar - IEEE Transactions on Image Processing, 2011 - ieeexplore.ieee.org
A computational camera uses a combination of optics and processing to produce images
that cannot be captured with traditional cameras. In the last decade, computational imaging …

Estimating defocus blur via rank of local patches

G Xu, Y Quan, H Ji - … of the IEEE international conference on …, 2017 - openaccess.thecvf.com
This paper addresses the problem of defocus map estimation from a single image. We
present a fast yet effective approach to estimate the spatially varying amounts of defocus …

Deblur and deep depth from single defocus image

S Anwar, Z Hayder, F Porikli - Machine vision and applications, 2021 - Springer
In this paper, we tackle depth estimation and blur removal from a single out-of-focus image.
Previously, depth is estimated, and blurred is removed using multiple images; for example …

When does computational imaging improve performance?

O Cossairt, M Gupta, SK Nayar - IEEE transactions on image …, 2012 - ieeexplore.ieee.org
A number of computational imaging techniques are introduced to improve image quality by
increasing light throughput. These techniques use optical coding to measure a stronger …

System and method to digitally replace objects in images or video

E Zavesky - US Patent 9,626,798, 2017 - Google Patents
A method includes receiving video data and identifying a second object in at least one video
frame of the video data. The method also includes determining whether to replace the …

Analysis of blur measure operators for single image blur segmentation

U Ali, MT Mahmood - Applied Sciences, 2018 - mdpi.com
Blur detection and segmentation for a single image without any prior information is a
challenging task. Numerous techniques for blur detection and segmentation have been …

Fabrication of micro-structured surface with controllable randomness by using FTS-based diamond turning

S Tanikawa, J Yan - Precision Engineering, 2022 - Elsevier
Random micro-structured surfaces (RSS) have great application potentials as various
functional surface elements, such as optical diffusers, with homogeneous surface properties …