Friday, September 24, 2010

Compressed Sensing Business Edition

From the ever great PetaPixel blog, here is the first Plenoptic cameras on the market. from Raytrix. This was unearthed from Photorumors which featured a presentation by Adobe on using GPU to reconstruct images from Plenoptic cameras:

David Salesin and Todor Georgiev are the presenters. Looking at Todor's page, I noticed among many interesting tidbits:

Adobe Tech Report, April 2007 Lightfield Capture by Frequency Multiplexing. Careful theoretical derivation of what MERL authors call "Dappled Photography" and "Heterodyning". Proving that frequency multiplexing works for both mask-based and microlens-based cameras. This is a new result. It shows that the approach is truly universal: It's not a special "heterodyning" type of camera, but a "heterodyning" method of processing the data, applicable to any camera! Also, proposing a new "mosquito net" camera. And much more (wave artifact removal, F/number analysis). Examples.

Of related interest is this page: 100 Years Light-Field featuring the work of Lippman ( I did not know the connection between Marie Curie and Gabriel Lippman ). Sure this is about computational photography an area which include compressive sensing and shows that at least some hardware is considering having a two-step process. The GPU aspect is something that we are all convinced about since our solvers  probably need this type of computational power. The main aspect for compressive sensing is whether it can bring another dimension to the data being reconstructed. In other words, could a plenoptic camera be hacked into doing something entirely new ?  In other news, David Brady let us know that Hasselblad is releasing a 200 MP camera. Also,  T-Ray Science, Inc. Files US Non Provisional Patent. From MarketWire:
VANCOUVER, BRITISH COLUMBIA--(Marketwire - Sept. 21, 2010) - T-Ray Science, Inc. (TSX VENTURE:THZ) announces it has filed a non provisional patent with the U.S. Patent and Trade Mark Office on a Unified Sensing Matrix for a Single Pixel Detector Based on Compressive Sensing (USPTO Serial No. 61/243,559).

T-Ray's Patent covers a particular process of acquiring a 2D image that allows for higher quality and faster scanning from a Terahertz beam. The Company is anticipating using the patented process in the development of its portable Skin Cancer Imager.

"T-Ray recognizes the importance of strengthening our patent portfolio," says T-Ray President and CEO Thomas Braun. "The signal process covered by this patent complements our existing intellectual property recently licensed from the BC Cancer Agency."

I don't have much time today as I have to fill my invention disclosure forms...

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