Paper Info
Title
The Application of Preconditioned Alternating Direction Method of Multipliers in Depth from Focal Stack.
Abstract
Postcapture refocusing effect in smartphone cameras is achievable using focal stacks. However, the accuracy of this effect is totally dependent on the combination of the depth layers in the stack. The accuracy of the extended depth of field effect in this application can be improved significantly by computing an accurate depth map, which has been an open issue for decades. To tackle this issue, a framework is proposed based on a preconditioned alternating direction method of multipliers for depth from the focal stack and synthetic defocus application. In addition to its ability to provide high structural accuracy, the optimization function of the proposed framework can, in fact, converge faster and better than state-of-the-art methods. The qualitative evaluation has been done on 21 sets of focal stacks and the optimization function has been compared against five other methods. Later, 10 light field image sets have been transformed into focal stacks for quantitative evaluation purposes. Preliminary results indicate that the proposed framework has a better performance in terms of structural accuracy and optimization in comparison to the current state-of-the-art methods. (C) 2018 SPIE and IS&T
Year
DOI
Venue
2017
10.1117/1.JEI.27.2.023019
JOURNAL OF ELECTRONIC IMAGING
Keywords
Field
DocType
focal stack,depth,regularization,synthetic defocus
Stack (abstract data type),Computer science,Algorithm,Light field,Regularization (mathematics),Depth map,Depth of field
Journal
Volume
Issue
ISSN
27
2
1017-9909
Citations 
PageRank 
References 
0
0.34
37
Authors
2
Name
Order
Citations
PageRank
Hossein Javidnia1104.71
P. M. Corcoran241482.56