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Mostly color perception

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The Internet is an amalgam of forms blurred under epistemological pressures. In Søren Kierkegaard’s words, under this flat shower of leveled information, where everybody is interested in everything and nothing is too trivial or too important, people just accumulate information and postpone decisions indefinitely, i.e., nobody takes action and nobody is responsible for truth — there is no mastery, just gossip. He called this the æsthetic sphere of existence, exhorting us to evolve to the ethical sphere, where we do not just accumulate information but take action and make commitments. Blogs are instruments to overcome flatness by creating opportunities for vertical activities. In this sense this blog is a view from my window — a collection of tidbits I judged relevant to computational color science and in general to the promotion of scientific excellence in areas of strategic importance for the future of research, economy and society.
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Blog categories:  | All  | color reproduction  | color science  | digital publishing  | imaging  | perception  | research process  | review  | science

» ISCC/IS&T "Black and White" Meeting, Nov 2008

ISCC/IS&T 2008 Special Topics Meeting,
“Black and White Conference”
Saturday, November 15, 2008

The Black and White Conference will follow the 2008 IS&T/SID Color Imaging Conference with a program devoted to the special challenges and solutions for black and white, two of the most important properties of a colored image. Evidence of recent interest in the blackness and whiteness of images and objects are the IDEAlliance Print Properties subcommittee on paper characterization, the SIS (Swedish Standards Institute) Workshop on the optical properties of paper, CIE Publication 163 on the Effect of Fluorescence in the Characterization of Imaging Media, and papers at recent Color Imaging Conferences.

Key topics at the meeting will include the measurement of white materials, three-color overprints versus true black, the impact of novel light sources on the rendition of colored images, very black materials, strategies for assessing black and white objects, and blackness preference.

The meeting is scheduled for Saturday, November 15, following Color Imaging Conference 16 in Portland, Oregon. Please submit abstracts to Ann Laidlaw at alaidlaw-at-xrite-dot-com.

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Posted by Giordano Beretta or Nathan Moroney on Wednesday, May 14, 2008 at 2:16:00 PM
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» World Wide Gamma

An experimental tool post to crowdsource the average 'gamma value' for the world wide web. To learn more about gamma you can read the FAQ and also the FQA by Charles Poynton.

Instructions
1. Use '+' and '-' buttons to make the corresponding patches above the buttons lighter or darker.
2. Create a visually equal spaced gray ramp from black on the left to white on the right. That is the jumps in lightness between neighbors should be roughly equal and the ramp should be getting progressively lighter.
3. Click on the 'Plot' button to see your results(black) plotted versus the world wide gamma(red).


Note that users of older versions of Safari (ie 1.3.2) have reported that this post is not interactive, but it has been tested with newer versions of Safari (ie 3.1.1) and the post is functional.

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Posted by Giordano Beretta or Nathan Moroney on Friday, May 09, 2008 at 7:25:00 PM
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» CIC16 Submissions Due April 13


Conference Overview
We are delighted to invite you to the sixteenth Color Imaging Conference in Portland, Oregon. This will be the first time this conference has been held in the Pacific northwest and we anticipate another strong program of tutorials and papers in all areas of color imaging.

Author Reminder
For those of you out there considering submitting a paper to CIC 16, please keep in mind the author instructions here and the April 13th submission deadline.

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Posted by Giordano Beretta or Nathan Moroney on Thursday, April 03, 2008 at 5:26:00 PM
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» Administrative note and color lawsuits

First an administrative note. Most feedback we get from you, our esteemed readers, is in the form of personal email. Only rarely are we able to generate sufficient controversy to spark a debate in the blog comment section, such as with Non-local realism, An On-Line Color Thesaurus, or yesterday's Revolutionary White Reflectance Standard for Metrology. Therefore, we are happy for every good comment we get. However, as you are aware our blog server is rather crafty, and it is difficult for us to find comments when you replace the post title with your own title. This summer HP will be upgrading to commercial blogging software and this blog will run smoother, hopefully even multilingually. In the meantime here is my answer to a comment on color lawsuits I was unable to locate.
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Posted by Giordano Beretta or Nathan Moroney on Wednesday, April 02, 2008 at 4:57:00 PM
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» Revolutionary White Reflectance Standard for Metrology

Today two color scientists at HP Labs announced the introduction of a revolutionary new white reflectance standard for metrology. This new reflectance standard is a breakthrough in terms of cost, simplicity and unique environmentally friendly disposal process. This new white standard will have broad impact in the fields of photonics, digital photography and color measurement and is available for immediate commercial and research use.

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Posted by Giordano Beretta or Nathan Moroney on Tuesday, April 01, 2008 at 1:50:00 AM
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» Testing Express

Thanks to Pau for hurling a link to the new PhotoShop Express online. Tried it out and found it to be an interesting combination of photo sharing and image editing with a flashy interface. It does have a button to 'turn photos into ahhhhtwork'. The back button is broken though.


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Posted by Giordano Beretta or Nathan Moroney on Thursday, March 27, 2008 at 2:31:00 PM
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» Performance update

A year ago I posted two entries on hyperthreads and multicores that were relatively popular. A short post on the the Performance Agora has an interesting comparison of the performance of the latest crop of Intel chips suggesting that the 8-way Penryn TPC-C performance now matches a 16-way Xeon of 2 years ago.

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Posted by Giordano Beretta or Nathan Moroney on Wednesday, March 26, 2008 at 5:13:00 PM
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» Navy Blue is the New Salmon

Navy blue is the new salmon - at least for delicious.

Last week Bernard Kerr and Joshua Schachter of Yahoo! del.icio.us gave a presentation (video to be posted here) about 'Making delicious tastier' or a preview of a 'more web 2.0' version of del.icio.us. Once again as a color guy I latched on to the color changes first - the salmon highlight color for the 'saved by' field is on its way out and a blue highlight will be it's replacement.


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Posted by Giordano Beretta or Nathan Moroney on Tuesday, March 18, 2008 at 5:56:00 PM
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» Color on the HP IdeaLab

HP's IdeaLab is live! We now have a central external web portal for people to try our web-based stuff online - Yeeha!


And there is a nice red card labeled "Color". Yeeha * 2!

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Posted by Giordano Beretta or Nathan Moroney on Friday, March 07, 2008 at 2:14:00 PM
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» A Visual Introduction to Mostly Color Perception

A purely visual meta-post or blognails that covers some of the posts from the past few months of Mostly Color Perception.

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Posted by Giordano Beretta or Nathan Moroney on Wednesday, March 05, 2008 at 9:05:00 PM
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» Bay Area SID Presentation on New CIE Cone Photoreceptor Fundamentals

An upcoming Bay Area SID presentation of interest to color and imaging fans. Mark your calendar.

Title: "The New CIE Color Space Based upon the Cone Photoreceptor Fundamentals"

By: James Larimer, PhD, ImageMetrics, LLC

Location: Singapore conference room of Apple Computer at 1 Infinite Loop, Cupertino, CA 95014

When: 6:00PM, 03/06/2008, Thursday

Map: Here

Abstract:

In 2006 the CIE published a new color space standard based upon the cone photoreceptor fundamentals. This talk will describe those basis functions, a brief history from Newton through Maxwell leading to the new color space, and the additional published norms or correction factors included in the standard for age related changes in optical densities of the lens and other ocular media. The lecture will end with a discussion of multiple primary displays, metamerism, and the future potential for displays to reconstruct power spectra isometrically yielding true color images. (See Brill, M.H., Larimer, J. (2007) Metamerism and Multi-Primary Displays. Information Display, 23/7, 16-21.)

Speaker Bio:

Dr. Larimer is President of ImageMetrics, LLC. ImageMetrics provides engineering services related to the selection of task specific displays, mitigation of signal capture and processing artifacts such as jaggies, judder, and tone scale banding, and engineering issues related to color. Dr. Larimer has been a university professor and department chairmen, a program director at the National Science Foundation, and recently retired as Senior Scientist from NASA's Ames Research Center. He has held every office in the Bay Area Chapter of the SID, and served as SID VP for the Americas. He is an Associate Editor of JSID and Co-chair of the IS&T/SID 2008 Color Conference.

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Posted by Giordano Beretta or Nathan Moroney on Tuesday, February 26, 2008 at 7:49:00 PM
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» Tokyo, Machu Pichu, Palo-Alto and More


The one-click cartoon tool has been online for a couple days now. The original post is a bit minimalist so I thought I would go ahead and do a post to share some of my example cartoons.


Tokyo street at twilight.

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Posted by Giordano Beretta or Nathan Moroney on Wednesday, January 16, 2008 at 1:52:00 PM
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» One-Click Cartoons


This tool post is a simple, one-click cartoon creation tool starting from a digital image. There are a range of cartoon creation tools and tutorials on the web but this tool is on-line and gives pretty decent results. It generates a stylized version of the original image with thin black lines rendering some of the edges and a significantly reduced number of colors. You can see some examples here.

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Posted by Giordano Beretta or Nathan Moroney on Saturday, January 12, 2008 at 4:48:00 AM
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» Carved Magnolia Leaves


Electronic Imaging 2008 is coming up soon and that means I'm hard at work completing my paper for the Human Vision and Electronic Imaging XIII Conference titled 'The Art of Non-Photographic Imaging'. It's in the Art, Aesthetics, and Perception session so that means it's a bit more creative than my typical technical papers. Drawing on some recent personal efforts and work, I hope to include some interesting stuff.

Like carved magnolia leaves.


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Posted by Giordano Beretta or Nathan Moroney on Thursday, January 10, 2008 at 2:21:00 PM
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» Rallying Support for Copyright


"What's noteworthy in each of these cases, is that bloggers, a community typically associated with piracy, are rallying in support of copyright." so says Lawrence Lessig quoted in a Washington Post article about photonapping. In this case, the buzzword photonapping does not refer to letting an image rest for a while in the afternoon so that it is less cranky. Instead the article specifically lists numerous instances of an individual's images having been used by a company or corporation, without their permission. Photonapping also presumably applies to individuals using commercial or professional images without getting permission but the tricky thing with buzzwords is they can be used before there is consesus about their definition. To speed this post along though, let's just say that photonapping is when photos that are shared online end up in unexpected places.

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Posted by Giordano Beretta or Nathan Moroney on Wednesday, January 09, 2008 at 3:22:00 PM
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» 30 Terabytes Uploaded Nightly


The Large Synoptic Survey Telescope or LSST is a 3+ gigapixel camera designed for astronomical imaging. It recently got a contribution of $30 million towards it's goal of uploading 30 terabytes of image data to the web nightly for public use. I really like astronomical images, but this is a staggering number of pixels.


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Posted by Giordano Beretta or Nathan Moroney on Tuesday, January 08, 2008 at 2:18:00 AM
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