How To Convert Grayscale Image to Color Image in c#

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How To Convert Grayscale Image to Color Image in c#

Thanks in Advanced

Posted 17-Jan-12 1:03am

Nikhil Dayalpawar

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3 solutions

Solution 3

There is no general solution to this. A greyscale image, by definition, has much less information than the colour image it was created from (one channel instead of three), and that mapping is not reversible (i.e. there is no way to tell whether a grey square started out red, blue or green).

Depending on the domain, you may be able to use a technique like what mjbohn links to (that's a nice article) to map particular grey values to a specific colour, but this relies very heavily on what the image represents, and it's unlikely to be easy to automate the process of picking the colour list.

Posted 17-Jan-12 1:31am

BobJanova

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Michel [mjbohn] 17-Jan-12 7:44am

Good explanation
My 5

Sergey Alexandrovich Kryukov 18-Jan-12 4:34am

You are right of course, my 5, but "no general solution" is not 100% accurate. The very general solution is possible. It will look like that: a program takes on input 1) gray image, 2) a data file representing arbitrary color map between gray tone space and one of color spaces. Is it general? Yes, quite.
--SA

BobJanova 18-Jan-12 13:54pm

I wouldn't really count that as a solution, though, because finding the colour map is part of the problem.

Solution 1

Refer this
http://rosettacode.org/wiki/Grayscale_image[^]

Posted 17-Jan-12 1:12am

Anuja Pawar Indore

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Michel [mjbohn] · Accepted Answer · 2012-01-17T01:16:00

Solution 2

Codeproject's search function can be a great help ;)
Image Transformation: Grayscale to Color[^]

Not to mention Google[^]

Posted 17-Jan-12 1:16am

Michel [mjbohn]

Comments

Uday P.Singh 17-Jan-12 7:25am

5ed for the link :)

Michel [mjbohn] 17-Jan-12 7:30am

thanks :)