how to make a colorwheel in matlab?
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Hello
I want to make a ColorWheel in matlab, sorry for asking simple question. I am not fluent in matlab and I don't know how we can make a colorwheel in matlab. Whould you please indicate me?
2 Comments
John D'Errico
on 23 Sep 2014
You should read this:
Not being fluent is not a problem. But you need to make some effort.
Answers (2)
Image Analyst
on 23 Sep 2014
See my attached demo, below the image. It makes a number of figures, including the one below.
Other color demos are in my File Exchange including one to synthesize an X-rite Color Checker Chart.
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Image Analyst
on 4 Oct 2014
I don't understand what you said. What's wrong with what I've provided above? I have attached another demo for color wheel. If that's not what you want either, then please try to get another English speaker to proofread what you wrote, because it does not make sense to me. I don't know what a dynamic patch is. I don't understand at all what this sentence means: "Each tome that subjets click on wheel and bar color of this patch must change and show his percept color.I mean i want to show static whell for heu and saturation and bar for brightness and dynamic patch for showing all perceptive color."
You can use ginput() to have the user click on a point in an image. That's about all I can think of to say after reading that.
David Young
on 23 Sep 2014
The functions you need are meshgrid, atan2 and hsv2rgb. Possibly also hypot if you want to make the centre bright or dark.
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