Talk:HSV color space

message: IP 128.174.154.152 (ctl22.lis.uiuc.edu, apparently someone from University of Illinois at Urbana-Champaign) blanked the page this evening.  There was no note of explanation or evidence of a page move, so I reverted to the previous edit.
Chinasaur 05:26, Mar 17, 2004 (UTC)
:You can leave a polite message such as  on the user's talk page. If a user persists in vandalism (a warning is already present on his talk page), report it on Vandalism in progress - the user may be blocked. -- Hankwang 09:53, 17 Mar 2004 (UTC)
thread_title:  Vandalism 

message: On HSV color space#Transformation from HSV to RGB.
The six results for Hi use a variable v (small letter, italic). This variable is not present in de formulas above, ie is is unknown & has no value when used in Hi's. I think this is not correct. First thing I expect (fwiw): if six H's are possible, thats the six sequence-combinations of p, q, t. User:DePiep 14:45, 24 May 2005 (UTC)
thread_title:  Formula incorrect? 

message: On HSV color space#Transformation from HSV to RGB.
The outcome makes an pre-exeption for when S=0 (no hue). For just above the maths it states: When S is non-zero, the following formulas can be used.
To me it seems that the functions can also be used when S=0 (no risk of division-by-zero). Is it more correct, then, to put the S=0 remark afterwards, as an illusttration (and not an part of the formulas). -DePiep 14:52, 24 May 2005 (UTC)
thread_title:  Minor clarification 

message: See the part HSV color space#Transformation from RGB to HSV. 
Here I expect the S=0-situation to be mentioned before the H-formulas, since that does introduce a division-by-zero possibility. Isn't it more maths & logic to create a one-way route  throught the formulas? -DePiep 15:00, 24 May 2005 (UTC)
thread_title:  Major clarification 

message: Is it possible to represent the HSV colour space as a sphere, where value corresponds to latitude, hue corresponds to longitude, and saturation corresponds to distance from the centre of the sphere?  Denelson83  04:57, 29 October 2005 (UTC)
replies: text: I think that a sphere would be more suited to the HSL color space. HSV is best represented by a shape with a flat top, whereas HLS is best represented by a shape that is symetrical on the L=0.5 plane. Ae-a 09:25, 27 February 2006 (UTC)
replies: text: Now that I think of it, a semi-sphere might be suitable for HSV. An upside-down cone or a cylinder might also be suitable. Ae-a 09:35, 27 February 2006 (UTC)
replies: text: There's a spherical model that I made over at the HSL article. I personally find it the easiest to grasp. -SharkD 08:24, 23 October 2006 (UTC)
thread_title:  Why not a sphere? 

message: Article says:
First, if S is equal to 0.0, then the resulting color is achromatic, or grey. In this special case, R, G, and B are simply equal to V. As above, H is irrelevant in this situation. When S is non-zero, the following formulas can be used:
But the formulas seem to work fine in the special case — there's no division by S, and p, q, t, R, G, and B all get set to V in all cases. Deco 05:57, 12 May 2006 (UTC)
replies: text: True, it's a bad wording. The S=0.0 Special case is useful. Perhaps it's better to say "When S is non zero, the following general case applies:" or some such? Kim Bruning 14:55, 19 July 2006 (UTC)
thread_title:  HSV to RGB formula seems to always work 

message: The arrows in the image :Image:HSV_clr_whl.png are wrong. The current image implies incorrectly that you cannot change "V" when "S" is at maximum. It also implies that with V at minimum you could change the color by changing S which is also wrong.
Instead, the S arrow should go from total white to totally saturated green and the V arrow should start at total black and be orthogonal to the S arrow.
-Oxygene123 11:43, 10 October 2006 (UTC)
thread_title:  HSV wrong image 

message: Why this is markes as unreferenced if there is a reference at the bottom? is that reference wrong or the signal should be removed? --Samus uy 00:07, 23 October 2006 (UTC)
thread_title:  References 

message: The HSL article states that HSV and HSL are different. Which article is correct? -SharkD 08:23, 23 October 2006 (UTC)
replies: text: The HSL article ir right, they are different. I've fixed this along with the "HSV color wheel" image. --Samus_ 11:57, 23 October 2006 (UTC)
thread_title: Not the same?

message: Speaking as a somewhat educated layman on the issues who's just checking in to remind himself of a few things, I think the article's good -- I was able to refresh my memory on the important points -- but I find the animated color space images extremely irritating.  They totally disrupt the experience of trying to read through or refer to the page, without any significant benefit.  It would be more appropriate to link to the images, or better yet display or link to an image that lets you manually control your view of the color space.  As it is, having the page open makes me feel like I'm standing on one of those Saturday Night Fever dancefloors... not helpful to the design process.
Also, the "chart" section for viewing "precisely the effect of varying levels" could use expansion.  I know a fair bit about HSV-vs-RGB-vs-YUV and so on, and it still took me a few minutes and a bunch of looking up and down to grasp what's going on in these illustrations.  The average reader is not going to learn anything.
-- Anonymous non-wiki-guy —The preceding unsigned comment was added by 66.93.144.192 (talk) 03:54, 8 January 2007 (UTC)
replies: text: Heh, there is animation?  I use the Firefox "Web Developer" add-on to force no animation.  The web is a much nicer place that way... 2*6 14:02, 10 January 2007 (UTC)
thread_title:  Animations necessary? 

message: Hello (:-) 11 01 2007
The figures right page 1, 2 and 3*3* Hue Neighborhood page 3
and right page 5 Are not printed
 Vidiani (Dijon)
—The preceding unsigned comment was added by 89.85.64.106 (talk) 10:28, 11 January 2007 (UTC)
replies: text: Hi.  I've seen that behavior also, but it corrected itself in a minute or two.  My guess is that the servers sometimes get backlogged, and serving up images is allowed to be at a lower priority than the articles themselves. The images are showing right now.  2*6 11:02, 11 January 2007 (UTC)
replies: text:  Images come from a different server altogether, so if the one is briefly having a hiccup, you'd see the behaviour you mention. --Kim Bruning 21:53, 15 September 2007 (UTC)
thread_title:  Figures no printed 

message: Please take a look at Luminance-Hue-Saturation as it probably needs a bit of work (I am not the author, I just moved it). Thanks! Fourohfour 13:48, 22 July 2007 (UTC)
replies: text: Good choice; I had prodded it, finding no support in color books for this divergent concept wrongly attributed to the CIE. Dicklyon 15:13, 24 July 2007 (UTC)
thread_title:  [[Luminance-Hue-Saturation]] 

message: Excuse my ignorance but could someone please check that the illustration on the left is saturation not intensity?  Maybe explain how it was genenerated?
130.130.37.12 01:14, 4 September 2007 (UTC)
replies: text: The three major stripes are three differents values (intensities); wihtin each, saturation varies from unsaturated gray on the left to fully saturated color on the right.  Seems OK to me. Dicklyon 04:42, 4 September 2007 (UTC)
thread_title:  Varying one component