A Toner Without Pigment

Fifth toner without pigment and FOGRA certified according to ISO 12647-7.

Thermally Pulsing the Surface Tension of Ink

Orange & White Dinosaur Tails

If you haven't seen it, Ed Yang has a nice post (thanks Tim) on some recent results in the area of color palaeontology. Specifically the analysis of melanosomes in dinosaur fossils, which allows some speculation about the color of dinosaurs. The post concludes with the quote:

Mike Benton, a co-author on the new study, says, "In Sinosauropteryx at least, essentially the most primitive dinosaur with feathers, the possession of an orange and white striped tail says 'display' of some kind, but whether for warning or pre-mating contests, we couldn't say."

For more details about phaeomelanin and eumelanin see also this nice primer on color mutations in rats.

16.7 Gb of Color per Second

Color at four hundred feet per minute.

Historical Color Translations on the ISCC Web Site

The ISCC has posted two historical color translations on it's web site. The translations include Aus dem Gebiet der Farbreizmetrik or On Color Stimulus Metrics by Robert Luther and Philipp Otto Runge’s Farben­Kugel or Color Sphere.



So now if you've ever asked yourself what is the Luther Condition, you can refer to Rolf Kuehni's translations of the original text.

Visualizing Crayon Colors

From the inbox (thanks David) comes a link to a nice visualization of crayon colors.



Given data from a little over a century it looks as though number of crayon colors doubles every 28 years.

Photonics West

We are science professionals, not professional bloggers, so we cheat a little by using the auto-pilot feature, where we write posts that are scheduled in the future. This time it back-fired, because Bahaa Saleh did not show up at EI; however, he just received his award at the Fellows Luncheon in San Francisco at Photonics West.

By the way, if you are attending, do not miss the Welcome Reception tonight at 7:00 pm in the Hilton San Francisco Union Square Hotel at 333 O'Farrell Street. To celebrate the 50th anniversary of the laser (the first laser was fired up on 16 May 1960 by Ted Maiman), SPIE is featuring the "Cirque du Lasaire," a night of laser infused magic, conversation, acrobatics, and laser displays. For more information see http://spie.org/advancingthelaser.

Ultraviolet Protection Factor of Cellulosic Fabrics

It takes more than sunscreen to keep the sun's UV rays from harming your skin. The type of clothing you wear can offer protection, too—or not. It is not just the type of fiber and the weave of the fabric that matters, but also the color. Ascención Riva of the Polytechnic University of Catalonia and colleagues Inés M. Algaba, Montserrat Pepió have addressed the color issue, studying the effects of different optical brighteners and dyes on the UV protection provided by lightweight woven cottons.

EI papers available online

Our EI papers are now available online from the SPIE Digital Library:

Font rendering on a GPU-based raster image processor: http://dx.doi.org/10.1117/12.839486

Color naming: color scientists do it between Munsell Sheets of Color: http://dx.doi.org/10.1117/12.846957

"Knowledge and productivity are like compound interest"

"Knowledge and productivity are like compound interest"

"It is true that other AI programs run forever; for example, if one considers the Google page rank algorithm that sorts web pages to be AI, then it could be considered an example of an AI program that lives forever."

"And then tile on top the bit.ly data and the Twitterfeed numbers (both on different scales) and you have an overall picture of growth of the real time web vs. Google and Amazon."

Electronic Imaging 2010 IS&T Awards

Wednesday 20 January 2010, IS&T's Immediate Past President Dr. Eric G. Hanson has bestowed awards to two member with a long list of contributions to imaging science, IS&T, and EI.

Colorless eReaders

From the Kindle Review comes a post entitled "What exacty would color add to eReaders?"

The second sentence is:

"Color doesn’t add very much to reading."
(bold is in the original post).

Now come on, doesn't bad color take away from reading?

The Dark Side of Color

Last November I wrote shortly about the session called The Dark Side of Color at EI. The session is now starting. Here are our slides:

At the moment the server is having some hesitations after slide 11. If the problem still persists, click here.

Electronic Imaging 2010 New SPIE Fellow

We just recognized a newly promoted SPIE Fellow for 2010 who has made great contributions to the Electronic Imaging community and to SPIE. The 2010 Fellows Committee, chaired by Roxann Engelstad has selected 62 new Fellows of the Society, which were approved by the SPIE Board of Directors. Fellows are members of distinction who have made significant scientific and technical contributions in the fields of optics, photonics, and imaging. The annual recognition of Fellows provides an opportunity for us to acknowledge outstanding members for their service to the general optics community.

Prof. Bahaa Saleh of The College of Optics & Photonics at the University of Central Florida.

Prof. Saleh’s fellow promotion is for specific research and achievements in optics and photonics, and more specifically in coherence and photon statistics, nonlinear and quantum optics, optical detection, image science, and vision.

This Fellow joins a prestigious list of more than 800 SPIE members so honored for their contribution to the discipline since the Society’s inception in 1955. Please join us in congratulating Prof. Saleh.

Photographic Benefit for Hatian Earthquake Survivors

Photographers for Hati has published a photographic benefit for Hatian earthquake survivors. All proceeds of this magazine will go to the American Red Cross International Response Fund for Haiti relief.



You can read more details in this interview with Lane Hartwell, which includes the following quote from Lane:

"I thought about how I could use photography to raise money immediately."

The resulting humanitarian pages are impressive and inspiring.

Binocular Rivalry May Mark Bipolar Disorder

Neuroscientists at Monash University in Melbourne and the University of Queensland in Brisbane have reported that the visual phenomenon known as binocular rivalry may eventually provide a diagnostic test for manic–depressive or bipolar disorder. [Source: ABC Australia]

Additive Color Mixing with 55,000 Pegs

From Joey Syta comes a unique Lite-Brite rendition of The Lady and the Unicorn entitled My Only Desire.



It's a nice use of additive color mixing and from the description of the piece:

"The pegs span four decades and multiple countries of origin which yield a much wider range of colors than the eight basic shades (red, orange, yellow, green, blue, purple, pink, and white)."

A great use of spatial color.

Which then contrasts nicely with an article in today's NYT about color palettes and the designer Hella Jongerius. The article includes the quote by Rolf Fehlbaum:

“Color is the least comprehensible aspect of design”

The article also notes that:

"Another problem, she says, is the influence of color forecasters, who tend to predict future trends (as their clients ask them to) rather than making considered decisions about individual colors, and how they will work together across a company’s products."

Which is to say spatial color is not just about the additive mixing of colors for the reproduction of a tapestry but multiple colors together is relevant for design.

The Darker Sides of Light & Color

The Darker Side of Light exhibit at the National Gallery of Art in Washington DC will have it's final day on Monday the 18th.



The Dark Side of Color track of the Color Imaging XV: Displaying, Processing, Hardcopy, and Applications conference in San Jose will take place on Wednesday the 20th.

Next week will be a busy week for dark sides.

Where in the world are our readers?

15 December to 14 January

Feeding big iron

Back in the mid-eighties, things were looking good for big iron printers. Tibor Fisli was getting very nice uniform dots with his quad-spot laser diodes and Gary Starkweather was succeeding with his 4000 dpi follower to the Platemaker, while Nick Sheridon was cranking up the printer speed to 300 ppm. The challenge for us in the Computer Science Lab was to be able to drive this big iron at speed.

18th Color Imaging Conference - Call for Papers

The IS&T and SID have released the call for papers for the 18th Color Imaging Conference.



This year the conference will be held from November 8 to 12, 2010 in San Antonio, Texas.

Conference General Co-Chairs Francisco Imai and Erno Langendijk write:

"The conference committee is constantly seeking to bring new topics to CIC and this year we would like to promote the special topics of color in computer graphics and color in medical imaging. Color in computer graphics presents challenging issues involving material appearance, video, capture, 3D, and perception. Color in medical imaging involves questions related to color appearance in dentistry, color formulation in prosthetic materials, and data visualization problems. Besides the color research areas covered by CIC, such as color perception, theory, capture, display, printing, and workflow, CIC encourages submissions in these two new fields."

Abstracts are due April 12, 2010.

From Coffee Bean to Carbon Atom

Coffee beans are bigger than carbon atoms.

The rod photoreceptors of the eye are somewhere between - but where?

From the University of Utah comes a slick visualization of scale ranging from coffee beans to carbons atoms. And yes it includes a rod photoreceptors part of the way through.



A nice educational demo listing metric units and lots of other labeled examples. Thanks to Tim for the forward.

New Light on Migraines

Main points from a Science Daily post:

• Migraine pain is believed to develop when the meninges (the system of membranes surrounding the brain and central nervous system) becomes irritated.
  
• For unknown reasons, nearly 85 percent of migraine patients are also extremely sensitive to light, a condition known as photophobia.
  
• Two groups of blind individuals who suffer migraine headaches, were studied. Patients in the first group were totally blind due to eye diseases such as retinal cancer and glaucoma; they were unable to see images or to sense light and therefore could not maintain normal sleep-wake cycles.
  
• This suggested to researchers that the mechanism of photophobia must involve the optic nerve, because in totally blind individuals, the optic nerve does not carry light signals to the brain.
  
• "We also suspected that a group of recently discovered retinal cells containing melanopsin photoreceptors [which help control biological functions including sleep and wakefulness] is critically involved in this process, because these are the only functioning light receptors left among patients who are legally blind."
  
• And even when the light was removed, he notes, these neurons remained activated. "This helps explain why patients say that their headache intensifies within seconds after exposure to light, and improves 20 to 30 minutes after being in the dark."
  

Related update (Jan 14, 2010): "Migraine and depression may share genetic component."

The Colors of Silence

World-renowned authors P. Simon and A. Garfunkel (Ph.D., Columbia) published on "The Sounds of Silence" in September 1965. Now, MIT neuroscientists reveal the colors of silence using an optogenetic technique.

Computer Sees Fake Artwork

A new computational algorithm uses "sparse coding" (PNAS PDF) to build a virtual library of a given painter's works and decomposes them into the simplest possible visual elements. A set of basis functions is constructed from a set of random black and white shapes. The computer then iteratively modifies them until some subset of the basis functions can be combined in some proportion to recreate the piece. The basis functions are refined further to ensure that the smallest possible number can generate any selected piece of artwork. [Source: BBC]

New salary politics

On page 28 of its January 3, 2010 issue, the Neue Zürcher Zeitung (compare to the Wall Street Journal) has an interesting article on salary politics written by Gabriela Weiss. Here in the USA, the typical salary policy of corporations is to peg the total salaries to about 10% of the corporation's revenue, and to distribute this sum exponentially among the employees in order of responsibility.