July 2024 - colorsync-users

Why 2 degree observer measurements for ICC profiles?
by Peter Miles 02 Aug '24

02 Aug '24

Hi list members. Hoping some color science folk out there on the list could help answer a question I have. >From Konica Minoltas web page titled “Understanding standard observers in color measurement” “CIE standard observers help correlate instrumental color measurements to human visual assessments. The 1964 10 Degree Supplementary Standard Observer is considered to be more representative of how the human eye perceives color.” So why do ICC profiles, for print production, still use 2degree observer measurements instead of 10 degree observer measurements? Given that the 10 degree observer “is considered to be more representative of how the human eye perceives color. (me: Than 2 degree observer)” Thanks Peter

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Re: Why 2 degree observer measurements for ICC profiles?
by Claas Bickeböller 18 Jul '24

18 Jul '24

Hi Jan-Peter, but you will not judge the complete monitor image at once nor will you judge the complete magazine. You typically focus on a smaller area and then change your focus. Think of how you make a proof-to-print evaluation. Best regards Claas Jan-Peter Homann schrieb am 17.07.24 um 08:49: > Hi Claas, > Thanks for your explanation. > I made your simple test, and even my Laptop monitor is bigger than my > fist. Same for looking on a double sided magazine with photos. > > Should we change to the the 10° observer for the printing industry? > Whats about defining the printing industry as being part both of the > media industry and a technical process for coating surfaces? > > Both industries are using 10° observer for measurements... > > Best regards > Jan-Peter > > Am 7/16/2024 um 9:22 AM schrieb Claas Bickeböller via colorsync-users: >> Hi Peter, >> >> The difference between the 2° and 10° observer is basically the size of >> the area on your retina that is stimulated. >> For the 2° observer mainly the cones in the center of the retina are >> stimulated while for the 10° observer also the rods are stimulated. >> That leads to a difference in color perception. >> Here is a quite nice visualization: >> https://santhalakshminarayana.github.io/images/color-science/standard-obser… >> >> >> The type of application when our perception is like a 2° observer or a >> 10° observer respectively is closely related to the viewing distance. >> >> When you look at a printed product from a typical viewing distance of >> 50-60cm the field of view is close to 2°. >> That's why for ICC profiles that are mainly used for print applications >> the 2° observer is the standard. >> >> When you look at other products like let's say a painted wall the filed >> of view is close to 10°. >> >> The wording on our website is a little misleading I must admit. >> Most of our industrial products are used for applications where the >> viewing distance leads to a field of view where the 10° observer >> correlates better than the 2° observer. >> >> BTW, when you want to check if in a certain situation "you are" the 2° >> or the 10° observer there is a simple test. >> >> Stretch out your arm, thumb upwards and look at your thumb with one eye. >> The area that is covered corresponds to approximately 2°. >> If the area can be covered with the entire fist, this is >> approximately 10°. >> >> Best regards >> >> Claas >> >> >> >> >> >> >> >> Peter Miles via colorsync-users schrieb am 16.07.24 um 04:13: >>> Hi list members. >>> Hoping some color science folk out there on the list could help >>> answer a question I have. >>> >>> From Konica Minoltas web page titled “Understanding standard >>> observers in color measurement” >>> “CIE standard observers help correlate instrumental color >>> measurements to human visual assessments. The 1964 10 Degree >>> Supplementary Standard Observer is considered to be more >>> representative of how the human eye perceives color.” >>> >>> So why do ICC profiles, for print production, still use 2degree >>> observer measurements instead of 10 degree observer measurements? >>> Given that the 10 degree observer “is considered to be more >>> representative of how the human eye perceives color. (me: Than 2 >>> degree observer)” >>> >>> Thanks >>> Peter >>> _______________________________________________ >>> Do not post admin requests to the list. They will be ignored. >>> colorsync-users mailing list (colorsync-users(a)lists.apple.com) >>> Help/Unsubscribe/Update your Subscription: >>> https://lists.apple.com/mailman/options/colorsync-users/lists%40bickeboelle… >>> >>> >>> This email sent to lists(a)bickeboeller.name >> >> _______________________________________________ >> Do not post admin requests to the list. They will be ignored. >> colorsync-users mailing list (colorsync-users(a)lists.apple.com) >> Help/Unsubscribe/Update your Subscription: >> https://lists.apple.com/mailman/options/colorsync-users/homann%40colormanag… >> >> >> This email sent to homann(a)colormanagement.de >

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Discover the Future of Imaging at EI 2025 – Submit Your Research!
by Roberta Morehouse 16 Jul '24

16 Jul '24

electronic Imaging Symposium (EI 2025) February 2-6, 2025 Burlingame, CA https://bit.ly/EI2025<http://https://bit.ly/EI2025> I'm excited to announce that EI 2025 will feature over 15 cutting-edge conferences focused on the exciting world of imaging. Our conferences will cover various topics, from autonomous vehicle technology to intelligent machines. Why Participate? *Diverse Topics: Explore human perception and cognition, intelligent machines, AR/VR, computational imaging, autonomous vehicles, computational display, high-performance computing, and more. *Share Your Research: Choose between Proceedings-first or Abstract-first submission options: - Proceedings-first: Receive a comprehensive review to improve your final paper. - Abstract-first: Enjoy a quicker submission process and the opportunity to present without submitting a proceedings paper, ideal for industry professionals. - Presentation-Only Option: If you wish to showcase your work without writing a proceeding paper, the Abstract-first option is perfect for you. This option allows you to present at the conference without publication. Priority Submission is advised for authors who fit the following criteria: *Require a VISA to enter the United States *Need additional time to obtain budget support *Want your paper posted in the IS&T Digital Library before the Symposium **Priority Submission Deadline** 21 JULY https://bit.ly/EI25-CFP Don't miss this opportunity to contribute to the future of imaging technology. Learn more about how to submit your research and join us at EI 2025! Roberta Morehouse Communications and Marketing Manager Society for Imaging Science and Technology (IS&T)<http://www.imaging.org> —imaging across applications— IS&T is a non-profit organization dedicated to advancing science and technology in imaging. Please consider a donation.<https://www.imaging.org/site/IST/About_Us/Donations/IST/About/Donations.asp…> Please contact info(a)imaging.org<mailto:info@imaging.org> for immediate requests! Connect with us on LinkedIn<https://www.linkedin.com/company/society-for-imaging-science-and-technology…> and Twitter<https://twitter.com/ImagingOrg> @ImagingOrg

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Researchers, Get Published with EI2025 Journal-First!
by Roberta Morehouse 03 Jul '24

03 Jul '24

electronic Imaging Symposium (EI 2025) February 2-6, 2025 Hyatt Regency SFO, Burlingame, CA https://bit.ly/EI2025 We are excited to announce the EI2025 Journal-First initiative, designed to get your imaging science and technology work published faster and secure an EI presentation slot. Key benefits of Journal-First: * Journal Citation: Boosts your credentials for tenure, funding, graduate applications, and graduation requirements. * Open Access: Accepted papers are published open access, providing extra visibility and inclusion in conference proceedings. * EI Talk: Automatically secure an oral presentation slot at the EI conference of your choice. * About Our Journals: * Journal of Imaging Science and Technology (JIST): Focused on advancing imaging science, its practical applications, and interdisciplinary connections. * Journal of Perceptual Imaging (JPI): Welcomes papers at the intersection of human perception, imaging technologies, and art. Visit the IS&T Digital Library<https://library.imaging.org/> for more information about the journals: https://library.imaging.org/ About the Symposium: For over 35 years, the electronic Imaging Symposium has connected academia and industry in imaging science and digital technologies. It spans the entire ecosystem, from sensors to image processing, covering applications like security, VR, machine vision, and data analysis. Conferences evolve with trends, including autonomous vehicles and multimedia analytics. Take advantage of these incredible benefits and propel your research forward. Submission Deadline: July 31, 2024. For more information and submission details, visit https://bit.ly/EI2025. Roberta Morehouse Communications and Marketing Manager Society for Imaging Science and Technology (IS&T)<http://www.imaging.org> —imaging across applications— IS&T is a non-profit organization dedicated to advancing science and technology in imaging. Please consider a donation.<https://www.imaging.org/site/IST/About_Us/Donations/IST/About/Donations.asp…> Please contact info(a)imaging.org<mailto:info@imaging.org> for immediate requests! Connect with us on LinkedIn<https://www.linkedin.com/company/society-for-imaging-science-and-technology…> and Twitter<https://twitter.com/ImagingOrg> @ImagingOrg

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