In Gimp and on my Xawtv I find a possibility to play with the hue. I have not found any change in the pictures after changing the hue. Could somebody explain in plain english ;-) what hue is and what to expect? -- NTReader v0.36w(P)/Beta (Registered) in conjunction with Net-Tamer.
Constant Brouerius van Nidek
Could somebody explain in plain english ;-) what hue is and what to expect?
See http://www.faqs.org/faqs/graphics/colorspace-faq/: According to the CIE [1], hue is the attribute of a visual sensation according to which an area appears to be similar to one of the perceived colors, red, yellow, green and bue, or a combination of two of them. -- Alexandr.Malusek@imv.liu.se
Good day Constant,
In Gimp and on my Xawtv I find a possibility to play with the hue. I have not found any change in the pictures after changing the hue. Could somebody explain in plain english ;-) what hue is and what to expect?
Difficult to explain. Much easier to show. In GIMP, open a colour photo of someone. Right click the image and select Image/Colors/Hue-Saturation... Check the Preview box, and play with the Hue slider. That will show you what Hue is. In the GIMP tab in GIMP's color chooser window the tall vertical multi colored bar shows all the possible hues, from red over yellow, green and blue, back to red. It is the visible clean colour spectrum. I.e. no light or darkness mixed into the hue. Grokking the GIMP has a good technical explanation about colour spaces. Read it a few times, and you will understand a lot better. What to expect? The same as if you change the hue on your ordinary TV. People get a funny colour in their faces. Best regards :o) Johnny :o)
In Gimp and on my Xawtv I find a possibility to play with the hue. I have not found any change in the pictures after changing the hue. Could somebody explain in plain english ;-) what hue is and what to expect?
Isn't he the guy that used to publish Playboy Magazine? Changing hue probably involves lounging around in pajamas while dozens of beautiful women pretend to adore you. Now, where is that slider in GIMP??! -- JAY VOLLMER JVOLLMER@VISI.COM TEXT REFS DOUBLEPLUSUNGOOD SELFTHINK VERGING CRIMETHINK IGNORE FULLWISE
Constant Brouerius van Nidek wrote:
Could somebody explain in plain english ;-) what hue is and what to expect?
Tint or perhaps schakering. It doesn't mean anything unless you contrast it with saturation and brightness. Think of hue as pure colour: green, red, orange, blue, yellow (not black or white). Start with grey and a hue (say orange). Saturation is how much orange you apply 0% is pure grey, 100% vivid orange. Brightness is how dark or light you make the colour: 0% is black, 100% white, 50% grey to vivid orange. You can make colours as HSB (or HSV: hue, saturation, value) instead of RGB or CMY. HSB is the human readable version, RGB the computer screen version and CMY (or CMYK) the printer version. -- JDL
On Sunday 12 January 2003 11:10 am, Constant Brouerius van Nidek wrote:
In Gimp and on my Xawtv I find a possibility to play with the hue. I have not found any change in the pictures after changing the hue. Could somebody explain in plain english ;-) what hue is and what to expect? Hokay, I don't know what you do and do not know, and I also know that I tend to mess up a lot when I try to explain things, so here goes:
If you imagine a colourwheel [A circle that goes Red -> Green -> Blue -> Red around the "outside" of the circle, and goes to White in the center] then it is like picking a point on the colourwheel and then rotating the wheel whilst keeping the point in the same place - the colour underneath the pointer changes. Americans are used to having to adjust hue because their TV system is based on NTSC which doesn't describe hue specifically, but relationally iirc Probably left you more confused ;o) Maybe someone else's reply will clarify more for you :o)
On Sunday 12 January 2003 5:01 pm, The Purple Tiger wrote:
On Sunday 12 January 2003 11:10 am, Constant Brouerius van Nidek wrote:
In Gimp and on my Xawtv I find a possibility to play with the hue. I have not found any change in the pictures after changing the hue. Could somebody explain in plain english ;-) what hue is and what to expect?
Hokay, I don't know what you do and do not know, and I also know that I tend to mess up a lot when I try to explain things, so here goes:
If you imagine a colourwheel [A circle that goes Red -> Green -> Blue -> Red around the "outside" of the circle, and goes to White in the center] then it is like picking a point on the colourwheel and then rotating the wheel whilst keeping the point in the same place - the colour underneath the pointer changes. Americans are used to having to adjust hue because their TV system is based on NTSC which doesn't describe hue specifically, but relationally iirc
Probably left you more confused ;o) Maybe someone else's reply will clarify more for you :o)
This is from my photoshop book:
"Think of hues as the colors you can see on a color wheel. In technical terms
hue is based on the wavelength of light reflected from an object, or
transmitted throught it. Saturation is the amount of gray in a color. The
higher the saturation, the lower the gray content -- and the more intense the
color. Brightness is a measure of the intensity of light in a color.
If you go into Control center > look & feel > background. choose color 1, it
opens up the dialog box. there is hsv(hue,saturation,brightness) and rgb
numbers listed towards the bottom.
On the color chart, if you pick a color(blue) and the pick a different shade
of blue that is horizontal to the first color you'll see the hue number
change but the saturation and brightness numbers remain the same.
If you pick a color directly vertical to the first color you'll change the
saturation, but not the hue..
Actually you can go from red to Pink(one side of the chart to the other), by
only changing the hues.
You should also be able to play with the hues in gimp, I'm not sure if you can
change a pictures' hue, but you can start out with a new project and change
the background color's hue, or just change the background color.
--
Franklin Maurer
participants (7)
-
Alexandr Malusek -
Constant Brouerius van Nidek -
Franklin Maurer -
Jay Vollmer -
John Lamb -
Johnny Ernst Nielsen -
The Purple Tiger