Difference-Of-Gaussian Compression
Posted by Mark Nelson on 20th December 2005 | Permanent Link
This article in EE Times is a short talk with Candice Brown Elliot, CEO of Clairvoyante Inc. They have technology which she describes as follows:
We are increasing information efficiency over conventional display architectures. The eye detects and encodes only portions of the visual information coming into it, but the brain is able to reconstruct the whole image. We discovered how the brain does this by studying visual illusions — they show you what the brain is doing to “fill in the blanks.” We designed the PenTile subpixel technology so that the brain fills in the blanks through using our subpixels, by doing the the same thing it does normally to fill in the blanks between retinal cells in the eye.
Okay, I read the article, and I bought the tee-shirt, when do I get to see the display?
And here’s how they pull it off:
The biggest difference between the eye and a video camera is that the eye only processes information that changes either spatially or temporally — technically, by using a difference-of-Gaussians, or DOG, wavelet filter, which only responds to the second derivative of an image. The eye is actually a part of the brain, and its DOG-filter architecture only sends changes to update the brain’s mental images whenever they are sensed by the eye.