Hi Jim: Yes, you can. Assumming you've got a RGB 3-band image, first thing you need to know are the Digital Values for the three bands in one of these pixels; use 'View->Cell Values Profile' to get the values for the Red Green and Blue channels. For instance, those values could be Red=255, Green=128 and Blue=255.
To change that color into a grey level (ie, Red=128, Green=128, Blue=128), just open a RGB algorithm and apply this formula to the three (RGB) bands: if I1=255 and I2=128 and I3=255 then 128 else I1 where I1 is the original red band, I2 is the original green band and I3 is the original blue band. The resulting image will have a 128/128/128 (grey) color in place of the old 255/128/255 (pink). Regards, Manuel Alonso -----Original Message----- From: Jim Pack [mailto:[EMAIL PROTECTED]] Sent: 16 March 2002 00:39 To: [EMAIL PROTECTED] Subject: Replace Pixel I have an image that has many pink pixels in it. I would like to convert every one of the pink pixels to another color (a grey). Every pink pixel is exactly the same color. Can I do this in ERMapper? Jim [EMAIL PROTECTED] ----------------------------------------------------------- To make changes to your subscription, please visit our website, http://www.ermapper.com/technicl/ermapperl/index.htm
