[Gimp-user] how to invert greyscale values only... leaving colors alone

2010-02-01 Thread Rich Evans
Hello, Is this the right place to ask a question about special filters in GIMP? If so, I'd love some advice on the following task: I have an RGB image that is basically a black background with many colorful objects and white text. --- I'd like to invert the image so that it is a white backgrou

Re: [Gimp-user] how to invert greyscale values only...

2010-02-02 Thread Rich Evans
I'm grateful for the replies I have received, but I was thinking that if there isn't a well-known tool or method already, that maybe someone could point me to a site that describes how custom filters can be made from scratch. I'm not afraid to learn what I need to to make the filter, ...I've jus

Re: [Gimp-user] how to invert greyscale values only...

2010-02-03 Thread Rich Evans
. Does this type of tool/script exist? continued thanks, -rich - Original Message From: Ken Warner To: Rich Evans Cc: Gimp-user@lists.XCF.Berkeley.EDU Sent: Tue, February 2, 2010 8:12:09 PM Subject: Re: [Gimp-user] how to invert greyscale values only... Colors -> Desaturate; C

Re: [Gimp-user] how to invert greyscale values only...

2010-02-04 Thread Rich Evans
- Original Message From: yahvuu To: Rich Evans Cc: Gimp-user@lists.XCF.Berkeley.EDU Sent: Thu, February 4, 2010 4:31:19 AM Subject: Re: [Gimp-user] how to invert greyscale values only... hi, Rich Evans wrote: > [..] Is there a > technique or tool to invert any part of the image that is