Apr 08

Gigaray LightFields: Caching Framework for Real-Time Rendering

Comparison of visual degradation due to missing light-field data (red) during rendering using four methods (picture: Birklbauer et al. 2013) In traditional digital imaging, the projected image is expressed as a set of pixels which contain two coordinates (x, y) and their respective values for colour and brightness. LightField technology enables us to record more and richer image information, also saving the direction of the lightrays. The extra data enables exciting new possibilities, but also accounts for a significant increase in file size and required computing power, which further rises with increasing resolution.

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Apr 05

Lytro International: QoQa brings LightField Camera to France, Belgium in Weekend Offer

Lytro’s LightField Camera is currently officially available in 5 countries (plus India, inofficially?), but it’s not easy to get in Europe.
This weekend, however, online bargain store QoQa is exclusively offering the 8 GB models “electric blue” and “graphite” to customers in France and Belgium, for 399 Euros plus shipping.

Lytro International: QoQa brings LightField Camera to France, Belgium in Weekend Offer

The weekend offer ends Sunday, April 7, at midnight CEST.
If your country of residence fits (or if you have friends there), this may just be the opportunity you’ve been waiting for: Lytro Appareil photo plénoptique de poche | QoQa.fr

Apr 05

Lytro Firmware Upgrade: New Creative Mode, More Zoom

Lytro: Creative Mode Menu With their newest camera firmware (v1.1.2), Lytro has implemented a number of interesting changes to their first-generation LightField camera.

Most notably, Creative Mode has been revamped and is now used completely differently:
In all previous official firmware versions, the refocus position was set by tapping on an object in the middle of the desired range. Refocus range was then largely influenced by the current zoom position.

Now, Creative Mode was simplified, in that users just tap on what’s most important in the scene, and the camera “takes the current zoom position, focus position, and relative distances into account” when establishing the refocus range automatically. Continue reading

Apr 04

Lytro Camera used to Observe Plasma Cloud Microparticles

A microparticle plasma cloud reconstructed using the Lytro LightField Camera (picture: Hartman et al. 2013) LightField Technology brings several never-before seen features to the world of imaging – most notably single-lens, single-exposure 3D data recording. The technology has been available for commercial and academic uses since 2011, when Raytrix announced their first commercial plenoptic camera.
With the introduction of Lytro’s LightField Camera in early 2012, there appeared a second option for LightField enthusiasts. Though less precise, the camera is significantly cheaper than its commercial counterpart, and so scientists have tried to use the consumer camera for their own scientific purposes.

Now, a team of physicists from Hungary have worked out a method to use the Lytro LightField Camera for three-dimensional imaging of microparticles in a small plasma cloud. Continue reading

Apr 02

A Method for Panorama LightField Imaging

Overview: Creation process of a Panorama LightField Picture (picture: Birklbauer and Bimber 2012) Not too long ago, the possibility to create LightField pictures with a mass-produced consumer camera sounded like dreams of the future. This was only the first step, though, and we’re looking forward to other popular imaging techniques (e.g. HDR and panorama imaging) to be augmented by LightField technology.
In a publication from 2012, computer scientists Clemens Birklbauer and Oliver Bimber from Johannes Kepler University in Linz, Austria presented a first approach towards creating Panorama LightField Images.

Panorama LightField Imaging: Rendered 22 Megapixel images from a LightField Panorama (picture: Birklbauer and Bimber 2012)

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