Holographic displays that are both compact and produce realistic holograms without eyestrain are still difficult to realize. Here the authors implement a steering-backlight unit and a holographic video processor to produce a realistic holographic display in a slim panel.
In a bid to sell more than “several dozen” models, the company is now working on a more accessible, miniature version that records and transmits holograms without taking up the entire height of a room. And, company founder David Nussbaum tells TechCrunch, it comes with new subscription features.
“The minis will be bundled with content like Peloton and Mirror bundled with very specific types of content,” Nussbaum said. “We are in conversations with a number of extremely well-known content creators where we would bundle a portal but will also have dedicated and exclusive content.”
Base Hologram has made its mission clear: create premium holographic shows. But will the ethical questions surrounding holograms keep it from success?
Intensity shot noise in digital holograms distorts the quality of the phase images after phase retrieval, limiting the usefulness of quantitative phase microscopy (QPM) systems in long term live cell imaging. In this paper, we devise a hologram-to-hologram neural network, Holo-UNet, that restores high quality digital holograms under high shot noise conditions (sub-mW/cm2 intensities) at high acquisition rates (sub-milliseconds). In comparison to current phase recovery methods, Holo-UNet denoises the recorded hologram, and so prevents shot noise from propagating through the phase retrieval step that in turn adversely affects phase and intensity images. Holo-UNet was tested on 2 independent QPM systems without any adjustment to the hardware setting. In both cases, Holo-UNet outperformed existing phase recovery and block-matching techniques by ∼ 1.8 folds in phase fidelity as measured by SSIM. Holo-UNet is immediately applicable to a wide range of other high-speed interferometric phase imaging techniques. The network paves the way towards the expansion of high-speed low light QPM biological imaging with minimal dependence on hardware constraints.
Motion sensors make avatars dance, via Mark Bartkevitch. Some new technologies about holograms you find here: “A Hologram of Anyone Speaking Any Language” (1 year ago): https://www.facebook.com/EngineeringML/videos/848988852139613/?fref=mentions&__xts__%5B0%5D=68.ARBDKew6dZ7QywxQwO8A6gv_CsYKQQSBGcoHM8DsUIltO6tCTDroRVC9IXf4BDS-uFqfAi-ia10ZMiyGm3Pb5pMwtSG3OyyuNldzLw2I7hl6B1vmaQdO_Yru7EnjbXGcprHwnrBYpAUw8eaT43FIg1bR5bFVJfTiX7v8ntaGaSY7-lLD5YX_2BA4q2ng9fviFVhDKCDGRav9pSi6nTeIz3cIJ1GE9guomWoAlECPkv0R84isuVEUDbIBCGxgXj8BCDGkCdfYxRZiSlBrlg9GmytES8KUL81yP37po0XE5jhv0GmbjDfhBoE6cR8uHEzpIfLRKlyIdbtzeAuVpciU0J2H2iI09WxkJL62sg&__tn__=K-R and https://bit.ly/308uV3h.
This video shows how holographic storage works, using green light to write data as a persistent hologram inside an optical crystal. The data can then be read…How does holographic storage work?
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Motion sensors make holographic avatars dance, via Mark Bartkevitch.
According to new research, black holes could be like a hologram, where all the information is amassed in a two-dimensional surface able to reproduce a three-dimensional image.
We can all picture that incredible image of a black hole that traveled around the world about a year ago. Yet, according to new research by SISSA, ICTP and INFN, black holes could be like a hologram, where all the information is amassed in a two-dimensional surface able to reproduce a three-dimensional image. In this way, these cosmic bodies, as affirmed by quantum theories, could be incredibly complex and concentrate an enormous amount of information inside themselves, as the largest hard disk that exists in nature, in two dimensions. This idea aligns with Einstein’s theory of relativity, which describes black holes as three dimensional, simple, spherical, and smooth, as they appear in that famous image. In short, black holes “appear” as three dimensional, just like holograms. The study which demonstrates it, and which unites two discordant theories, has recently been published in Physical Review X.
The mystery of black holes.