Results 281 to 290 of about 1,661,475 (318)
Some of the next articles are maybe not open access.
Light Field Image Quality Assessment via the Light Field Coherence
IEEE Transactions on Image Processing, 2020In this paper, a novel full-reference image quality assessment (IQA) method for evaluating the quality of the distorted light field (LF) image against its reference LF image is proposed, called the log-Gabor feature-based light field coherence (LGF-LFC).
Yu Tian +4 more
openaire +1 more source
Computer Graphics Forum, 2012
AbstractWe present a novel approach to recording and computing panorama light fields. In contrast to previous methods that estimate panorama light fields from focal stacks or naive multi‐perspective image stitching, our approach is the first that processes ray entries directly and does not require depth reconstruction or matching of image features ...
Clemens Birklbauer, Oliver Bimber
openaire +1 more source
AbstractWe present a novel approach to recording and computing panorama light fields. In contrast to previous methods that estimate panorama light fields from focal stacks or naive multi‐perspective image stitching, our approach is the first that processes ray entries directly and does not require depth reconstruction or matching of image features ...
Clemens Birklbauer, Oliver Bimber
openaire +1 more source
Light-field displays and light-field optics
2016 15th Workshop on Information Optics (WIO), 2016Light-field optics is a novel system in which image is exchangeable in between 2D (light-field data) and real 3D, although this technology is well known just for refocusing ...
openaire +1 more source
Light field variational estimation using a light field formation model
The Visual Computer, 2018Many light field acquisition methods have been developed thanks to special optical devices, such as microlens array and coded aperture. However, these methods produce light fields with resolutions limited by the employed optical device. In this paper, we propose an alternative method to acquire light fields with resolutions that users can select.
Julien Couillaud, Djemel Ziou
openaire +1 more source
Interactive light field painting
ACM SIGGRAPH 2012 Emerging Technologies, 2012Since the seminal SketchPad work of Sutherland [1964], direct interaction with a computer has been compelling: we can directly touch, move, and change what we see. Direct interaction is a major contribution to the success of smartphones and tablets; yet, the world is not flat. While existing technologies can display realistic multi-view stereoscopic 3D
James Tompkin 0001 +6 more
openaire +1 more source
ON THE INTERMEDIATE STATES OF THE LIGHT FIELD
International Journal of Quantum Information, 2004This paper is a short survey on intermediate states (IS) of the light field studied in the last fifteen years in the literature; they coincide with two basic states in two different limits of the involved parameters. We consider their main characteristics, distinguishing them in two classes: the class of interpolating states, and a special class of ...
Valverde, C., Baseia, B.
openaire +2 more sources
Generalized Depth-of-Field Light-Field Rendering
2016Typical light-field rendering uses a single focal plane to define the depth at which objects should appear sharp. This emulates the behavior of classical cameras. However, plenoptic cameras together with advanced light-field rendering enable depth-of-field effects that go far beyond the capabilities of conventional imaging.
David C. Schedl +3 more
openaire +1 more source
Manipulating Light with a Magnetic Field
2002We review our theoretical and experimental work done on light propagation and scattering in magnetic fields.
van Tiggelen, B., Rikken, G.
openaire +2 more sources
2018
This chapter discusses changes in screen masking from 1932 to 1952. While the mask of black velour traditionally used to stabilize projection proved mostly unnecessary by the early 1930s, most exhibitors kept the mask partially out of habit. Schlanger, however, argued for its removal, and thus for a conceptual change from the screen as frame to the ...
openaire +1 more source
This chapter discusses changes in screen masking from 1932 to 1952. While the mask of black velour traditionally used to stabilize projection proved mostly unnecessary by the early 1930s, most exhibitors kept the mask partially out of habit. Schlanger, however, argued for its removal, and thus for a conceptual change from the screen as frame to the ...
openaire +1 more source
Flying field and airway lighting
Journal of the A.I.E.E., 1929This paper discusses methods of lighting airports and airways and describes various types of lamps and equipment used for this purpose. In the information on airport illumination are included beacons, obstruction lights, boundary lights, illuminated wind direction indicators, field and building flood lights, signal lights, and ceiling illumination. The
openaire +1 more source