October 2020 - colorsync-users

[Complimentary Webinar 29 Oct.] CIC28 Color Encoding in CNNs
by Roberta Morehouse 27 Oct '20

27 Oct '20

CIC28 5 Pillars of Color complimentary webinars focusing on the five pillars of color imaging and science. Each presentation will run for 20-30 minutes, followed by Q&A. Date: 29 October 10:00 EDT Presenter: Prof. Maria Vanrell- Color Encoding in Convolutional Neural Networks Abstract: Convolutional Neural Networks (CNN) have been proposed as suitable engines to solve computer vision problems. Their impressive performance is a bit shadowed by their black-box nature and the consequent lack of understanding of how the visual information is internally represented. This talk shows the results of dissecting one of these networks trained on more than a million images to perform an object recognition task. http://bit.ly/CIC28Webinar_29Oct *If you are unable to attend the live webinar, a recording will be provided. View previous webinar recordings http://bit.ly/CIC28_ Registration is now open for CIC28 Online-IS&T Color and Imaging Conference, 4-19 November 2020. View the program and register today! http://bit.ly/CIC28_ Roberta Morehouse, CMP Communications and Marketing Manager Society for Imaging Science and Technology (IS&T) -imaging across applications- imaging.org Connect with us on LinkedIn and Twitter @ImagingOrg #CIC28

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[Conference/Workshops]Learn from World-Renowned Color Experts @ CIC28
by Roberta Morehouse 21 Oct '20

21 Oct '20

Deep Dive into Color Imaging w/Short Courses & Workshops during CIC28 Online - IS&T Twenty eighth Color and Imaging Conference, featuring: * 15 courses and 4 workshops led by experts from RIT, Microsoft, Dolby Laboratories, Fraunhofer IGD, and more * Topics range from color and imaging basics to applications like LED lighting systems-and everything in between * 2, 4, and 8-hr courses and workshops - introductory to advance in content * Course Topics: Color Theory and Modeling | Color Imaging | Color Display | Color Processing * Access all courses & recordings with the Short Course Passport * Workshops complimentary with conference registration * Attend live sessions and view recordings until 15 March 2021 * Participate across three time zones CIC28 ONLINE Twenty-eighth Color and Imaging Conference * Short Courses: 4-7 & 9-14 November * Technical Program: 16-18 November * Workshops: 19 November http://bit.ly/CIC28_ Follow us on LinkedIn & Twitter @ImagingOrg for #CIC28 for updates Roberta Morehouse, CMP Communications and Marketing Manager Society for Imaging Science and Technology (IS&T) -imaging across applications- imaging.org

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Re: Humans (and cameras and scanners) do not have a color gamut (?)
by Rich Wagner 19 Oct '20

19 Oct '20

I agree with Florian’s responses below regarding how we “know” what animals “see.” The parallel question is how we “know” what women with tetrachromatic vision “see.” There is a very good article from the BBC that describes this that might help. https://www.bbc.com/future/article/20140905-the-women-with-super-human-visi… Here’s a short excerpt from the excellent story: Proving that these people actually see the world differently has involved a two-decade journey, however. Although the relevant combination of genes does not seem to be especially rare – perhaps 12% of women might have four distinct cones – many of the people that Jordan tested just didn’t seem to show any differences in their perception. But by 2010, she had found a subject who perfectly acted the part of a tetrachromat. Jordan’s “acid test” involved coloured discs showing different mixtures of pigment, such as a green made of yellow and blue. The mixtures were too subtle for most people to notice: almost all people would see the same shade of olive green, but each combination should give out a subtly different spectrum of light that would be perceptible to someone with a fourth cone. Sure enough, Jordan’s subject was able to differentiate between the different mixtures each time <http://www.journalofvision.org/content/10/8/12.full>. “When you ask them to discriminate between the two mixtures, a tetrachromat can do it very quickly. They don’t hesitate,” says Jordan. Unfortunately, much of the research in color perception is highly complex and often difficult for the lay public to comprehend. Good science writers can translate that research into language the lay public can understand. Poor science writing leads to exaggerated claims and misinformation. That said, the title of this article is a bit over the top. I don’t think these women have “super human vision” any more than those who are colorblind have “sub human vision.” Both have visual perception that is significantly different from the average of our species. —Rich > OnMon, 13 Jan 2020 19:40:11 +0100, Florian Hoech <lists+colorsync-users(a)hoech.org <mailto:lists+colorsync-users@hoech.org>> wrote: > [snip] >> Not a single case can be made by anyone?s fisthand information about the post processing by the brains of these animals. Who can know what they see or apprehend? > > You can draw pretty useful conclusions (meaning they work well in > real-life, thus supporting the respective theories) from all the > scientific research that has been done. "Color" perception is not just > "nice to have". Trichromats (like humans) have an evolutionary edge over > (say) dichromats, e.g. when it comes to distinguish edible/nutritious > from inedible/less nutritious food like fruits etc. When you look at the > M and L cone responses of any trichromat, you can see that the responses > of the "sensors" (cones) largely overlap. Yet, we seem to perceive the > "end result", green and red, as very different colors (opposites even!). > >> Since humans communicate with each other about color we can build models and references and so on. But animals? Yet, experts are quick to supply examples of how things must appear to non-humans. > > I think you may be conflating the actual research with how it is > presented (usually not by the researchers themselves), broken down and > simplified in newspapers/magazines/articles, online and offline, meant > for consumption by the general public. > >> When we grant that all of these theories are onto something about the ways animals percieve color we account for their differences by describing them in terms of ?gamuts?. > > I like the term "dimensions". A Tetrachromat has an additional dimension > of "color". > >> Surprise: experts determine gamuts based on the sensor alone! They don?t even seem to be the slightest bit unhappy about it. > > ...where? And who? Dimensionality alone doesn't really tell us much > about gamuts. > > Florian. >

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ECI Offset Profiles—Supplement 2012-2—Surface Finishing
by Axel Robert 19 Oct '20

19 Oct '20

Dear all, I know this is an old subject but I’ll like to obtain your opinion. Two Offset Profiles for surface finishing are available to better anticipate lamination post press. And I mainly use them for soft proofing. But they have been created on a FOGRA39 basis. So, what happens with the so-called standard proof for the print run in FOGRA51 instead of FOGRA39 simulation? Does the OBA in the proofing paper will change it? Should I use a OBA free paper with ISO Coated? Or are the differences too tiny to be seen? Thank you. Sincerely. Axel ROBERT

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