Jump to content Worldwide-English
HP.com Home Products and Services Support and Drivers Solutions How to Buy
» Contact HP
HP.com home
 Blogs index  >   Mostly color perception  

Mostly color perception
Content starts here
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.
Add to Technorati Favorites
» HP Blogging Code of Conduct
Blog categories:  | All  | color reproduction  | color science  | digital publishing  | imaging  | perception  | research process  | review  | science

May 2008 Entries

» Your portrait
One of the American strengths in the global economy is the demographic knowledge about itself. No other country publishes high quality statistical data as fast as the US, and nowhere else have companies such intimate knowledge of their customers. Nevertheless, HP's blogs are subject to very stringent privacy rules, and we know very little about You, our reader.
» Read the full content
Permalink | Trackbacks (0) | Comments (0)

» 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.
» Read the full content
Permalink | Trackbacks (0) | Comments (0)

» A fresh view of lasers
We are all familiar with conventional lasers, where light is confined between two mirrors defining laser cavity modes and laser frequency. The light is trapped long enough for amplification by a gain medium (atomic vapor, solid, or dye) to be efficient. These lasers are in our CD and DVD ROMs and players, bar code readers, and the head stations that light up optical fiber.
» Read the full content
Permalink | Trackbacks (0) | Comments (0)

» Aftermath: surviving psychopathy
As this blog's title suggests, we are not just writing about color perception. This is a good time to put some entropy in our blog. Last summer I reviewed a few books on psychopathy, which generated quite a bit of feedback email. Here is an update.
» Read the full content
Permalink | Trackbacks (0) | Comments (1)

» 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.
» Read the full content
Permalink | Trackbacks (0) | Comments (2)

» Toyon Red


Terminal three of the San Francisco airport is currently hosting an exhibit on Catlinaware. These depression era ceramic products produced on Catalina island are quite striking. They were manufactured in a range of colors, including toyon red. The display about the glazes used for Catalinaware noted that in total nearly twenty different glazes were used, and many were inspired by the natural colors of the island.

» Read the full content
Permalink | Trackbacks (0) | Comments (0)



Printable version
Privacy statement Using this site means you accept its terms