Hi Mike, I think this might depend on what your app does. The simple answer would be to convert each of the hex couplets for R, G, and B to decimal, take the average of the three, round it, and then convert this average back to a hex couplet. The R, G, and B for the shade of grey will all be the hex version of the average. Percentage-wise, exactly the same - just divide the decimal average by 2.55.
The implication of the RGB colour scale is that luminance is directly proportional to the average of the R, G and B couplets. If you view a block of the resultant grayscale beside a block of the original colour, I very much doubt you'll consider them equal in terms of luminous intensity. Regards, Simon -----Original Message----- From: Discussion of advanced .NET topics. [mailto:[EMAIL PROTECTED] On Behalf Of Mike Andrews Sent: 27 October 2006 14:17 To: ADVANCED-DOTNET@DISCUSS.DEVELOP.COM Subject: [ADVANCED-DOTNET] Algorithm question... Guys, Does anyone know how to convert an RGB value into either a grayscale percentage or an RGB gray value? Thanks, Mike =================================== This list is hosted by DevelopMentorR http://www.develop.com View archives and manage your subscription(s) at http://discuss.develop.com =================================== This list is hosted by DevelopMentor® http://www.develop.com View archives and manage your subscription(s) at http://discuss.develop.com
