Re: [Gimp-user] changing background colours
On Mon, 14 May 2001 08:31:19 -0500, Jeff Sheffield <[EMAIL PROTECTED]> said: >the-part-I-am-about-to-get-wrong rgb >colors have 16,000+ colors. 16,777,216. Kelly ___ Gimp-user mailing list [EMAIL PROTECTED] http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-user
Re: [Gimp-user] changing background colours
On Mon, 14 May 2001 08:55:11 -0400, "Michael P. Soulier" <[EMAIL PROTECTED]> said: >What are the advantages of RGB vs. indexed? I'm afraid I know >nothing about this. Many GIMP filters do not work on indexed images, and pixel interpolation is disabled on them so you don't get the blending and antialiasing effects that you do in RGB mode. Also, indexed images are limited to 256 colors. The GIMP really isn't well-suited for editing low-color-count images. The only common use for indexed images in the GIMP is preliminary to saving to GIF. Kelly ___ Gimp-user mailing list [EMAIL PROTECTED] http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-user
Re: [Gimp-user] changing background colours
> > What are the advantages of RGB vs. indexed? I'm afraid I know nothing > > about this. > You can use filters on RGB :) also index color (gif files) only have a maximum of 256 colors in the image, this is configurable. the-part-I-am-about-to-get-wrong rgb colors have 16,000+ colors. I think this varies between file formats and saving parameters (but way more than 256 ;). Jeff On Mon, May 14, 2001 at 02:15:20PM +0100, Rasputin wrote: > * Michael P. Soulier <[EMAIL PROTECTED]> [010514 14:06]: > > On Sun, May 13, 2001 at 09:32:21PM -0700, Jeff Trefftzs wrote: > > > To change the background color in a gif so you don't wipe out > > > the text there are a couple of ways to go. But first, change > > > the image to RGB instead of indexed. You'll be able to change > > > it back later. > > > > What are the advantages of RGB vs. indexed? I'm afraid I know nothing > > about this. > > > > You can use filters on RGB :) > Always convert any images you're working with to rgb before touching them, > tweak away then save back to indexed if need be (i.e. for GIFs) > > -- > Your analyst has you mixed up with another patient. Don't believe a > thing he tells you. > Rasputin :: Jack of All Trades - Master of Nuns :: > ___ > Gimp-user mailing list > [EMAIL PROTECTED] > http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-user Thanks, Jeff -- | When you are feelin' really down, | | read the Book of Job, and see | | what that sombitch had to go through! | | -- Forrest Gump | | -- Winston Groom | -- | Jeff Sheffield | | [EMAIL PROTECTED] | | AIM=JeffShef ICQ=4340529 Yahoo=jeff_sheffield | | NowDocs http://www.nowdocs.com (day gig) | -- ___ Gimp-user mailing list [EMAIL PROTECTED] http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-user
Re: [Gimp-user] changing background colours
* Michael P. Soulier <[EMAIL PROTECTED]> [010514 14:06]: > On Sun, May 13, 2001 at 09:32:21PM -0700, Jeff Trefftzs wrote: > > To change the background color in a gif so you don't wipe out > > the text there are a couple of ways to go. But first, change > > the image to RGB instead of indexed. You'll be able to change > > it back later. > > What are the advantages of RGB vs. indexed? I'm afraid I know nothing > about this. > You can use filters on RGB :) Always convert any images you're working with to rgb before touching them, tweak away then save back to indexed if need be (i.e. for GIFs) -- Your analyst has you mixed up with another patient. Don't believe a thing he tells you. Rasputin :: Jack of All Trades - Master of Nuns :: ___ Gimp-user mailing list [EMAIL PROTECTED] http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-user
Re: [Gimp-user] changing background colours
On Sun, May 13, 2001 at 09:32:21PM -0700, Jeff Trefftzs wrote: > To change the background color in a gif so you don't wipe out > the text there are a couple of ways to go. But first, change > the image to RGB instead of indexed. You'll be able to change > it back later. What are the advantages of RGB vs. indexed? I'm afraid I know nothing about this. I tried a selection by colour, but it only selected pieces of the text. I'll try again later and report back. Thanks for the reply, Mike -- Michael P. Soulier <[EMAIL PROTECTED]> "With sufficient thrust, pigs fly just fine. However, this is not necessarily a good idea. It is hard to be sure where they are going to land, and it could be dangerous sitting under them as they fly overhead." -- RFC 1925 PGP signature
Re: [Gimp-user] changing background colours
To change the background color in a gif so you don't wipe out the text there are a couple of ways to go. But first, change the image to RGB instead of indexed. You'll be able to change it back later. 1. If the text is all one color (not found elsewhere), try selecting by color and grabbing the text. Then invert the selection (which should give you everythi8ng except the text). You can then fill/blend/pattern/whatever the selection without affecting the text. 2. Conversely, if the text is varying colors and the background is one color, try selecting just the bg color. Then fill ad lib. 3. If your computer has the same font that the text is in, you can rebuild the image from scratch using the text tool, or the dynatext filter. 4. Or you can try playing with Image/Colors/Threshold and see if you can separate the text from the bg this way, then procedd to color as desired. And if you want to save the resulting image as a gif, the save dialog will walk you through the necessary steps. HTH, -- --Jeff Jeff Trefftzs <[EMAIL PROTECTED]> http://www.tcsn.net/trefftzsHome Page http://gug.sunsite.dk/gallery.php?artist=68 Gimp Gallery http://members4.clubphoto.com/jeff309574A photo gallery ___ Gimp-user mailing list [EMAIL PROTECTED] http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-user
