Light ﬁeld panorama by a plenoptic camera
Consumer-grade plenoptic camera Lytro draws a lot of interest from both academic and industrial world. However its low resolution in both spatial and angular domain prevents it from being used for ﬁne and detailed light ﬁeld acquisition. This paper proposes to use a plenoptic camera as an image scanner and perform light ﬁeld stitching to increase the size of the acquired light ﬁeld data. We consider a simpliﬁed plenoptic camera model comprising a pinhole camera moving behind a thin lens. Based on this model, we describe how to perform light ﬁeld acquisition and stitching under two diﬀerent scenarios: by camera translation or by camera translation and rotation. In both cases, we assume the camera motion to be known. In the case of camera translation, we show how the acquired light ﬁelds should be resampled to increase the spatial range and ultimately obtain a wider ﬁeld of view. In the case of camera translation and rotation, the camera motion is calculated such that the light ﬁelds can be directly stitched and extended in the angular domain. Simulation results verify our approach and demonstrate the potential of the motion model for further light ﬁeld applications such as registration and super-resolution.
Record created on 2014-06-18, modified on 2016-08-09