Generalized Image Acquisition and Analysis
Three-Dimensional Kaleidoscopic Imaging
Three-dimensional kaleidoscopic imaging, a promising alternative for recording multi-view imagery. The main limitation of multi-view reconstruction techniques is the limited number of views that are available from multi-camera systems, especially for dynamic scenes. Our new system is based on imaging an object inside a kaleidoscopic mirror system. We show that this approach can generate a large number of high-quality views well distributed over the hemisphere surrounding the object in a single shot. In comparison to existing multi-view systems, our method offers a number of advantages: it is possible to operate with a single camera, the individual views are perfectly synchronized, and they have the same radiometric and colorimetric properties. We describe the setup both theoretically, and provide methods for a practical implementation. Enabling interfacing to standard multi-view algorithms for further processing is an important goal of our techniques.
Projects
On Plenoptic Multiplexing and Reconstruction
In: International Journal of Computer Vision (IJCV).
Abstract
Photography has been striving to capture an ever increasing
amount of visual information in a single image. Digital
sensors, however, are limited to recording a small subset of
the desired information at each pixel. A common approach to
overcoming the limitations of sensing hardware is the optical
multiplexing of high-dimensional data into a photograph. While
this is a well-studied topic for imaging with color filter
arrays, we develop a mathematical framework that generalizes
multiplexed imaging to all dimensions of the plenoptic
function. This framework unifies a wide variety of existing
approaches to analyze and reconstruct multiplexed data in
either the spatial or the frequency domain. We demonstrate
many practical applications of our framework including
high-quality light field reconstruction, the first comparative
noise analysis of light field attenuation masks, and an
analysis of aliasing in multiplexing applications.
Project Page Bibtex
@article{Wetzstein:PlenopticMultiplexing:2012,
title={{On Plenoptic Multiplexing and Reconstruction}},
author={Gordon Wetzstein and Ivo Ihrke and Wolfgang Heidrich},
year={2013},
volume = 101,
number = 2,
year = {2013},
pages = {384--400},
}
title={{On Plenoptic Multiplexing and Reconstruction}},
author={Gordon Wetzstein and Ivo Ihrke and Wolfgang Heidrich},
year={2013},
volume = 101,
number = 2,
year = {2013},
pages = {384--400},
}