tag:blogger.com,1999:blog-1840985738235902482.post775783365860161691..comments2024-03-27T07:14:48.488-04:00Comments on John the Math Guy: Unambiguous regions in color space for the basic chromatic colorsJohn Seymourhttp://www.blogger.com/profile/11350487038873935295noreply@blogger.comBlogger10125tag:blogger.com,1999:blog-1840985738235902482.post-1731284136328619342017-01-06T11:36:50.131-05:002017-01-06T11:36:50.131-05:00If this blog post were in a journal, you would hav...If this blog post were in a journal, you would have seen a reference to Mylonas' paper, and perhaps a reference of "personal communication". I drew from several of his papers.<br /><br />What I have published here is the extent of my research so far. Nothing with any color appearance model, and I will readily admit that the lack of common (or even controlled) viewing conditions is a limitation to combining the various data sets.<br /><br />I used deltaE in comparing results from the two online experiments. Since the differences were "really darn big" in DEab, I didn't bother computing the DE2000 color differences. But... since DEab generally applies too much weight to differences in chroma, one would expect that the DE2000 differences between the two sets of numbers would be appreciably smaller. But the conclusion would still be that there was a rather large difference between the two that couldn't be explained by statistical variation.<br /><br />Please note that the use of deltaE was incidental to the crux of the work, though. The a*b* and the table at the end did not rely on deltaE.<br /><br />Thanks for your comments, and your interest.John Seymourhttps://www.blogger.com/profile/11350487038873935295noreply@blogger.comtag:blogger.com,1999:blog-1840985738235902482.post-60528723587612645812017-01-06T03:58:51.251-05:002017-01-06T03:58:51.251-05:00This is great blog post, which reminded me of Mylo...This is great blog post, which reminded me of Mylonas presentation at AIC2012 Newcastle. Have you tried analysing the data in an Appearance Colour Space? Assuming an 'expected' set of viewing conditions? Have you tried any other Colour Difference Formulae? E.g. CIE2000 ?Chrysiida Kitsarahttps://www.blogger.com/profile/13944034565212199750noreply@blogger.comtag:blogger.com,1999:blog-1840985738235902482.post-59860749605111100882017-01-03T12:33:05.242-05:002017-01-03T12:33:05.242-05:00I enjoyed your blog like everyone else. But made m...I enjoyed your blog like everyone else. But made me think about the history of colour names. There is an interesting piece on this at http://gizmodo.com/how-the-colors-got-their-names-1510522700 If the author is correct then Purple is 1200 years old, Orange only 500 years old and Pink a mere baby of 284 years.<br /><br />The other question that came to mind was why some colours took up a much greater area than others and what that says about our perception of colour.Ian Reidnoreply@blogger.comtag:blogger.com,1999:blog-1840985738235902482.post-31311386594211738772017-01-03T11:07:01.588-05:002017-01-03T11:07:01.588-05:00Thanks Marc,
Yeah... I'll have to put together...Thanks Marc,<br />Yeah... I'll have to put together some 3D stuff. Good suggestion.John Seymourhttps://www.blogger.com/profile/11350487038873935295noreply@blogger.comtag:blogger.com,1999:blog-1840985738235902482.post-2409393738647512932017-01-02T12:33:02.965-05:002017-01-02T12:33:02.965-05:00John,
Another great post. Now i know the answer to...John,<br />Another great post. Now i know the answer to: is that a spectrophotometer in your pocket or are you just happy to see me? Seriously though...love the eleveness. Would love to see the plot in 3D with the L* worked too!Marc Levinehttps://www.blogger.com/profile/14613478282816691506noreply@blogger.comtag:blogger.com,1999:blog-1840985738235902482.post-37119858773057496012017-01-02T12:24:17.842-05:002017-01-02T12:24:17.842-05:00Thank you, Anastasios. :)Thank you, Anastasios. :)John Seymourhttps://www.blogger.com/profile/11350487038873935295noreply@blogger.comtag:blogger.com,1999:blog-1840985738235902482.post-58766411590472818312016-12-31T14:12:05.448-05:002016-12-31T14:12:05.448-05:00This a great work from you John! You have the uniq...This a great work from you John! You have the unique capability to transform a scientific issue to a joyful reading!. Anyway, your post (which reflects your intensive and original work and research) opens up a door for further research, in topics we think they are solved. Tahanks for this great work that you share with us! Anastasios from GreeceAnastasios E. Politishttp://www.helgramed.grnoreply@blogger.comtag:blogger.com,1999:blog-1840985738235902482.post-66607522961393600672016-12-28T22:03:46.627-05:002016-12-28T22:03:46.627-05:00Yeah... ummm... I do have a copy of this. I did ki...Yeah... ummm... I do have a copy of this. I did kinda vaguely read it through - much like yiu kinda vaguely read through my post. I didn't find a whole lot of jokes in it, though. <br /><br />One thing I did not see readily available was the color coordinates (in any system) of "just plain red". Maybe I need to read it in more detail.John Seymourhttps://www.blogger.com/profile/11350487038873935295noreply@blogger.comtag:blogger.com,1999:blog-1840985738235902482.post-78044343799639440692016-12-28T09:04:18.053-05:002016-12-28T09:04:18.053-05:00Great post John. The main reason of the discrepanc...Great post John. The main reason of the discrepancy between the chroma values of Moroney's colour names and ours is the different grid of colour samples used in our experiments. The most important dimension in colour naming is hue and in terms of hue angle the agreement for the top most frequent colour names is remarkable (see http://colornaming.net/Papers/CGIV_10_Online_Colour_Naming_Experiment_Using_Munsell_Samples_D.Mylonas.pdf)Dimitris Mylonashttp://colournaming.comnoreply@blogger.comtag:blogger.com,1999:blog-1840985738235902482.post-39585566399117255872016-12-27T11:36:48.273-05:002016-12-27T11:36:48.273-05:00I'll read this more thoroughly, but for now: w...I'll read this more thoroughly, but for now: why is there no mention of the ISCC-NBS Dictionary of Color Names? (Recorded as "National Bureau of Standards Circular 553"issues November 1, 1055.<br /><br />- Your friendly CNPDave Wyblehttps://www.blogger.com/profile/09623357167770566661noreply@blogger.com