partially convert an nsimage to grayscale
partially convert an nsimage to grayscale
- Subject: partially convert an nsimage to grayscale
- From: "Tony O'Callaghan" <email@hidden>
- Date: Fri, 3 Nov 2006 19:17:00 +0000
Hello everyone,
I was wondering whether anyone knew how to partially convert an image from
colour into gray scale. Or to be more precise, I want to convert an image to
gray scale without however converting the entire image. For example, I want
to say, for an input, I want any colour image, as an output I want every
pixel except the ones that i categorise as a certain colour (in this case
red) to be converted. The purpose of which is to make the red object in the
image stand out more.
Any ideas,
Thanks,
Tony
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