Interactive Light Field Tilt-Shift Refocus with Generalized Shift-and-Sum
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Conference PaperDate:
2019Access:
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Alain, M., Aenchbacher, W. & Smolic, A., Interactive Light Field Tilt-Shift Refocus with Generalized Shift-and-Sum, Proceedings of European Light Field Imaging Workshop, Forthcoming, 2019Download Item:
Abstract:
Since their introduction more than two decades ago, light fields
have gained considerable interest in graphics and vision communities
due to their ability to provide the user with interactive visual
content. One of the earliest and most common light field operations
is digital refocus, enabling the user to choose the focus and
depth-of-field for the image after capture. A common interactive
method for such an operation utilizes disparity estimations, readily
available from the light field, to allow the user to point-and-click
on the image to chose the location of the refocus plane.
In this paper, we address the interactivity of a lesser-known
light field operation: refocus to a non-frontoparallel plane, simulating
the result of traditional tilt-shift photography. For this purpose
we introduce a generalized shift-and-sum framework. Further,
we show that the inclusion of depth information allows for
intuitive interactive methods for placement of the refocus plane. In
addition to refocusing, light fields also enable the user to interact
with the viewpoint, which can be easily included in the proposed
generalized shift-and-sum framework.
Sponsor
Grant Number
SFI stipend
15/RP/2776
Author's Homepage:
http://people.tcd.ie/smolicaDescription:
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SFI stipendOther Titles:
Proceedings of European Light Field Imaging Workshop, Forthcoming.Type of material:
Conference PaperCollections
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Full text availableKeywords:
Light field, Digital refocus, Shift-and-sum, Tilt-shift, Camera array, Plenoptic cameraSubject (TCD):
Creative Technologies , Multimedia & CreativityMetadata
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