What's the best color space to preserve image naturalness?

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life24
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What's the best color space to preserve image naturalness?

Post by life24 » 2016-06-06T10:33:58-07:00

Hello,
What's the best color space to preserve image naturalness?
Thanks

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fmw42
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Re: What's the best color space to preserve image naturalness?

Post by fmw42 » 2016-06-06T10:52:54-07:00

Please define image naturalness? Compare to what?

life24
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Re: What's the best color space to preserve image naturalness?

Post by life24 » 2016-06-09T23:52:31-07:00

fmw42 wrote:Please define image naturalness? Compare to what?
Thank you for your reply,
For example: HE method can leads unnatural image. but i need color space , not a enhancement method.
What's the best color space to preserve image naturalness? RGB? HSV? or .... ?

Image

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fmw42
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Re: What's the best color space to preserve image naturalness?

Post by fmw42 » 2016-06-10T00:38:05-07:00

Colorspace and mean brightness are quite different concepts. What processing are you expecting to do where you would like to choose the best colorspace. See http://www.imagemagick.org/Usage/filter/ and http://www.imagemagick.org/Usage/filter/nicolas/

snibgo
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Re: What's the best color space to preserve image naturalness?

Post by snibgo » 2016-06-10T00:39:51-07:00

Your question is too vague for an answer.

Computer screens display images with red, green and blue channels. So the output colorspace needs those channels. But processing can be done in any colorspace, according to the requirement. For example:

- To adjust the image brightness, we can convert to a colorspace with a lightness channel, make the adjustment, and convert back to RGB/sRGB. The other two channels of the chosen colorspace will be unchanged.

- To adjust the image saturation, we can convert to a colorspace with a saturation channel, make the adjustment, and convert back to RGB/sRGB. The other two channels of the chosen colorspace will be unchanged.

Many, many other adjustments can be made to an image. I can't see that there is a "best" colorspace that fits them all.
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henrywho
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Re: What's the best color space to preserve image naturalness?

Post by henrywho » 2017-06-01T21:55:01-07:00

I presume that you are talking about digitized images.

The best way to preserve a digitized image is to leave it in the original format untouched.

If you will be performing different operations on the image, the answer depends on the tool(s) you will be using.

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