Aug 19

Displays: Fundamentals and Applications [Free Ebook]

Displays: Fundamentals and Applications [Free Ebook] The authors of “Displays: Fundamentals and Applications”, Rolf R. Hainich and Oliver Bimber, have recently made their book available online. In chapter nine, they take a comprehensive look at various 3D display technologies including light field displays.
The 599 page long book, which sells for 83 US-Dollars in Hardcover form, can now be downloaded free of charge for non-commercial purposes as a 64 MB PDF at displaysbook.info (under “Materials”).

Our book “Displays: Fundamentals and Applications” is now available free of charge for non-commercial purposes.
You can download the ebook (pdf, 599 pages, 360MB) from http://displaysbook.info (Material). The hardcopy can still be ordered from CRC Press.
If you think that this is of any value to you, please make a donation at www.krebshilfe.de or www.cancer.org.

Apr 17

Apple buys Array-Camera Maker LinX for DSLR-Quality and Light Field Imaging

Apple buys Array-Camera Maker Linx for DSLR-Quality and Light Field Imaging Apple is known to have been interested in light field technology since before Lytro released their first-generation light field camera, as Ren Ng was reportedly invited by Steve Jobs himself to discuss the technology’s potential. The company has even patented some of their own inventions in the field.
Now, it seems that the tech giant has made its next move towards light field photography: Apple has acquired Israeli camera module maker LinX, which specializes in thin camera arrays similar to Pelican Imaging’s PiCam.
LinX promises powerful camera modules with advanced image quality (“leading the way to DSLR performance in slim handsets”), but also additional information such as scene depth through its “multi-aperture” modules (read: array cameras and possibly light field technology).

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Apr 04

Magic Leap: Promo Video Teases AR Headset

Rony Abovitz, CEO of the secretive startup Magic Leap, was expected to reveal the company’s rumoured Augmented Reality headset recently at a TED talk in Vancouver, but canceled a few days before. Instead, the company released a 90 second promo video teasing an AR game that it says is “currently being played at the office”, and it looks pretty awesome.

Video description: Unfortunately, we couldn’t make it to TED, but we wanted to share one of the things that we’d planned to share at the talk. This is a game we’re playing around the office right now (no robots were harmed in the making of this video).

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Apr 01

SPIE: Deconvolution allows Recovery of Full Resolution in Light Field Images

Figure 1. Restoration of a blurred image (simulated data) through deconvolution associated with a plenoptic wavefront sensor. Top left: Original object. Top right: Degraded (blurred) image. Bottom left: Plenoptic acquisition. Bottom right: Restored image. This simulation shows that it is possible to recover an image (obtained with a 512×512-pixel sensor) with only 32 × 32 microlenses. (Image: Rodriguez-Ramos et al., 2015) One of the most limiting hardware factors in light field photography is the loss of image resolution by use of microlens arrays: In Lytro’s light field cameras, the effective image resolution is a factor of 10 below the sensor resolution (i.e. 4 Megapixel images from a 40 Megaray sensor in the Lytro Illum). Raytrix, on the other hand, has managed to achieve up to 25% of sensor resolution using multi-focus plenoptic arrays.

In a recent article on SPIE.org, the Society for Optics and Photonics Technology, researchers José Manuel Rodriguez-Ramos and colleagues discuss a new deconvolution approach which allows recovery of full image resolution from a raw light field picture. Continue reading

Nov 11

Lytro Development Kit lets NASA and others build Customized Light Field Cameras

Lytro Development Kit Illustration (actual may differ) - Lytro Development Kit lets NASA and others build Customized Light Field Cameras (image: Lytro) Following two products aimed at the consumer and pro-sumer camera markets, Lytro has released the Lytro Development Kit (LDK) which opens up the technology to anybody, for a price.

The Lytro Development Kit (LDK) [...] is designed for companies that want to explore developing custom light field cameras and applications for use cases outside of photography and storytelling. Continue reading