Talk:False color

"human visual perception is limited to three independent coordinates"

I added

to this phrase because I'm not sure what it means. Anyone think they can "translate" the idea from electromagnetic/color terms to layperson ones?

You could clarify this point by finding a citation using search terms: trichromic, vision, cones. Doug youvan (talk) 16:56, 20 May 2008 (UTC)

False-color is an atavistic term

There is nothing false about pseudocolored images produced by an algorithm from a photo-realistic image. A search of Google for "pseudocolor" lists this article as rank one. The WP redirect should be removed, and this article should be renamed and / or moved. Search engines usually ignore hyphens, so pseudo-color will be handled properly, too. With some thought, this article should be combined with Palette_(computing) - Doug youvan (talk) 16:52, 20 May 2008 (UTC)

I agree that the term false-color isnt accurate, and the article should be renamed pseudocolor. Calling the article false-color implies things about it that may create misconceptions. Pseudocoloring is also what the practice is more commonly known as. I would suggest renaming the article pseudocolor and having a redirect from false-color to the pseudocolor article. - Blamb16 (talk) 15:45, 4 April 2012 (UTC)

Based on instructions from Dickylon, I propose an external link ...

to www.youvan.com which hosts Pseudocolor in Pure and Applied Mathematics. This site is misnamed a dot com, when really it should have been a dot org . It has been up and stable for over three years. It is approximately rank 10 on both Google and Yahoo for the search of the term pseudocolor. It's loaded with source code that is PD that will run in both Mathematica and SAGE. SAGE is PD. My intent is to facilitate work in the field, pro bono, as I have approximately 600 USPTO references and worked in the field since 1983. This includes the popularization of pseudocolor in microbial genetics which was published as a full page lead article photo of pseudocolored colonies in July, 1987 as the lead (cover) article on photosynthesis. One of the examples on www.youvan.com is PD source code for a well known technology in imaging spectroscopy. There is approximately present-day = $50M public dollars (via grants) behind the work. Many of the graphics from the site have been uploaded to Commons as PD, with code either in the description or associated PDF files. It is unfair to students to omit this link, because I see semester-type cycling of hits originating from dot edu .Doug youvan (talk) 21:10, 22 May 2008 (UTC)

Also, see http://en.wikipedia.org/wiki/User_talk:Doug_youvan for this insertion. —Preceding unsigned comment added by Doug youvan (talk • contribs) 04:58, 26 May 2008 (UTC)

Dick - Why are you undoing me and placing the reason in the Edit Summary? You are citing editoral policy in a terse manner that does not apply. Please discuss here. Doug youvan (talk) 06:45, 23 June 2008 (UTC)

Yes, in edit summaries one must be terse. I'm not sure what you think doesn't apply here. I've pointed you to WP:EL several times. It says "You should avoid linking to a website that you own, maintain or represent, even if the guidelines otherwise imply that it should be linked. If the link is to a relevant and informative site that should otherwise be included, please consider mentioning it on the talk page and let neutral and independent Wikipedia editors decide whether to add it." So far, nobody has decided to add it. Dicklyon (talk) 06:53, 23 June 2008 (UTC)

The key word is "avoid" in WP:EL. It can't be avoided at this time, because this article has very little information in it, yet it is top ranked on a Google search of the word pseudocolor. We have to be able to send readers somewhere until this article is worked up to a higer standard. One of the first things we need to do is to stop redirects from the term pseudocolor to this article (entitled false-color) and rename this article "pseudocolor". False-color is an atavistic term. Doug youvan (talk) 13:31, 23 June 2008 (UTC)

Why not work on adding some more content to the article in that case? Dicklyon (talk) 15:17, 23 June 2008 (UTC)

My time: divided between single parent child-rearing and postponed surgery. Also, we are going to have problems with images that are anything but NASA, as they are copyvios unless you have some ideas on public domain material. If we are going into biotech, where there are lots of good and current examples in imaging, I am going to have more problems with my own work. Youvan's method on the Zeiss Axiomat would be a good example, but I dare not. Pseudocoloring and imaging spectroscopy on bacterial colonies is my stuff, too. I think we need to draft an editor with more time and less apparent conflicts. What do you think about changing this article's title to "pseudocolor"? I do not know the procedure, but it looks like you and I actively watching this article, so it would probably be at our mutually our initiative unless someone else has a comment. Doug youvan (talk) 03:12, 24 June 2008 (UTC)

I think that if you don't have time to contribute, you shouldn't be edit warring. If you think a move to pseudocolor is in order, just state here that you intend to move it, and see if anyone objects; if nobody objects, move it. I'll read what you say, and if it makes sense, with respect to sources, I'll support it and help. Dicklyon (talk) 06:17, 24 June 2008 (UTC)

merge

As far as I can tell, what this false-color article calls "pseudo-color" is identical to what the density slicing is talking about. Let's merge that entire "density slicing" article into the "pseudo-color" section of this article, OK? --68.0.124.33 (talk) 18:05, 1 April 2010 (UTC)

Done; after just 26 months. Dicklyon (talk) 05:09, 29 June 2012 (UTC)

hyphen

False-color (with hyphen) is an adjective. Article titles are usually noun phrases, like False color (no hyphen). Has this been debated in the past? —Tamfang (talk) 03:05, 29 June 2012 (UTC)

Yes, let's fix it. No, it hasn't been discussed before. You'll need to do a WP:RM to fix it. Dicklyon (talk) 04:57, 29 June 2012 (UTC)

Requested move

The following discussion is an archived discussion of a requested move. Please do not modify it. Subsequent comments should be made in a new section on the talk page or in a move review. No further edits should be made to this section.

The result of the move request was: moved. Jenks24 (talk) 09:41, 6 July 2012 (UTC)

---

False-color → False color – False-color (with hyphen) is an adjective. False color (no hyphen) is a noun phrase, like most article titles. —Tamfang (talk) 05:14, 29 June 2012 (UTC)

• Support – yes, the noun form is better. It does appear that way in sources. Dicklyon (talk) 05:23, 29 June 2012 (UTC)
• Support per nom. Rotorcowboy ^talk
  _contribs 06:20, 29 June 2012 (UTC)
• Support; per Tamfang; seems reasonable to me. bobrayner (talk) 14:01, 29 June 2012 (UTC)
• Support – WP:HYPHEN. —BarrelProof (talk) 15:52, 30 June 2012 (UTC)

The above discussion is preserved as an archive of a requested move. Please do not modify it. Subsequent comments should be made in a new section on this talk page or in a move review. No further edits should be made to this section.

Images

This image depicts the flowfield around the Space Shuttle Launch Vehicle traveling at Mach 2.46 and at an altitude of 66,000 feet. The surface of the vehicle is colored by the pressure coefficient, and the gray contours represent the density of the surrounding air.

I found one nice example showing both the use of pseudo color and grayscale – unfortunately there are already enough examples in the article, so I put it here. Tony Mach (talk) 18:50, 27 August 2012 (UTC)

External links modified

Hello fellow Wikipedians,

I have just modified one external link on False color. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:

• Added archive https://web.archive.org/web/20120817005009/http://gdsc.nlr.nl:80/gdsc/en/information/earth_observation/band_combinations to http://gdsc.nlr.nl/gdsc/en/information/earth_observation/band_combinations

When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.

This message was posted before February 2018. After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than regular verification using the archive tool instructions below. Editors have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the RfC before doing mass systematic removals. This message is updated dynamically through the template {{source check}} (last update: 5 June 2024).

• If you have discovered URLs which were erroneously considered dead by the bot, you can report them with this tool.
• If you found an error with any archives or the URLs themselves, you can fix them with this tool.

Cheers.—InternetArchiveBot (Report bug) 13:30, 29 December 2016 (UTC)

Metameric Failure

The article uses the phrase "metameric failure" as a sophisticated way of saying, "wrong color." But, I don't think that "metameric failure" is as simple as that: Metamerism is the phenomenon of different light spectra appearing to our eyes as the same color. Matching colors is big business in print, in fashion in house paints, etc. In that business, "metameric failure," is what they say when two different color swatches that are supposed to look the same actually look different when viewed under certain light sources.

Imagine a garment that is made from two different fabrics that both are supposed to be the same color. But the dyes that are permanent on the one fabric are not permanent on the other and vice versa. By using different dyes, it may be possible to match them so that they both look the same color when they're illuminated by daylight. But then, when you take them inside an office lit by fluorescent lights, they appear to be different colors. That's what "metameric failure" has always meant whenever I've heard anybody say it.

151.201.129.79 (talk) 12:25, 10 July 2024 (UTC)