Right to Create write:
The USPTO has rejected the broadest claims of the JPEG image format patent held by Forgent Networks.
It’s nice to see the Patent Office doing the right thing, but it’s too bad that more than $100 million dollars that Forgent has extorted from industry will never be returned to its rightful owners. Forgent […]
An inexpensive detector developed by a NASA-led team can now see invisible infrared light in a range of "colors", or wavelengths.
The detector, called a Quantum Well Infrared Photodetector (QWIP) array, was the world’s largest (one million-pixel) infrared array when the project was announced in March 2003. It was a low-cost alternative to conventional infrared […]
Flickr member Luke H tested Kodak Tri-X 400 film (400TX) in Diafine developer at high speed. He shot the frames above at ISOs 2000, 2500, 3200, 4000, 5000, and 6400 with a yellow filter.
Check it out in Luke’s photostream at Flickr
If you’re not familiar with Diafine developer, it’s got several magical properties: it’s a split-bath […]
Digital photography has made it possible to quickly and easily take a pair of images of low-light environments: one with flash to capture detail and one without flash to capture ambient illumination. We present a variety of applications that analyze and combine the strengths of such flash/no-flash image pairs. Our applications include denoising and detail […]
Continue reading...Excerpt from by "The Pinhole Camera Revisited or The Revenge of the Simple-Minded Engineer", by Kjell Carlsson:
"The image of a point object, the Point Spread Function (PSF),
should be as small as possible to produce a sharp image.
"Geometrical optics approximation: Hole should be as small as possible.
"Fraunhofer diffraction approximation: Hole should be as large as […]
interactivearchitecture.org writes, "Bitfall is an installation where water is being used to project images taken from the internet. A computer observes various news websites and chooses thereafter the images to be displayed. 128 nozzles are controlled by synchronised magnetic valves, and the water drops falling to the ground shape the images. The visual information […]
Continue reading...Wilhelm Research has released their book, The Permanence and Care of Color Photographs: Traditional and Digital Color Prints, Color Negatives, Slides, and Motion Pictures, by Henry Wilhelm with contributing author Carol Brower—originally published in 1993—as a free, downloadable PDF.
You can get the individual chapters here at Wilhelm Research’s site, or from this direct link to […]
"A functional superlens would be a major breakthrough in optics and was first envisioned five years ago. The idea is to use exotic types of materials, proposed in the late 1960s, to create ‘negative’ refraction of light, which literally means steering it in the opposite direction of that found in the natural world. The first […]
Continue reading...(Before & after: inpainting (type removed))
"GREYCSTORATION is an image regularization algorithm which processes an image by locally removing small variations of pixel intensities while preserving significant global image features, such as sharp edges and corners. The most direct application of image regularization is denoising. By extension, it can also be used to inpaint or resize […]
Ren Ng, a Ph.D student in the Computer Science department at Stanford says, “For my dissertation I’ve been working on ways of capturing more information about the light inside a camera for enhanced digital photography. My work has spanned both practical and theoretical elements of the problem. On the practical side, we’ve written a paper […]
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