Clemens Birklbauer, Oliver Bimber,
"Light-Field Retargeting"
: Proceedings Eurogaphics 2012, Serie Eurographics 2012, 5-2012
Original Titel:
Light-Field Retargeting
Sprache des Titels:
Englisch
Original Buchtitel:
Proceedings Eurogaphics 2012
Original Kurzfassung:
We present a first approach to light-field retargeting using z-stack seam carving, which allows light-field compression and extension while retaining angular consistency. Our algorithm first converts an input light field into a set of perspective-sheared focal stacks. It then applies 3D deconvolution to convert the focal stacks into z-stacks, and seam-carves the z-stack of the center perspective. The computed seams of the center perspective are sheared and applied to the z-stacks of all off-center perspectives. Finally, the carved z-stacks are converted back into the perspective images of the output light field. To our knowledge, this is the first approach to light-field retargeting. Unlike existing stereo-pair retargeting or 3D retargeting techniques, it does not require depth information.