Re: [Gimp-user] How to enhance low resolution graphic for larger modified image ???
helices writes: > I have a simple JPG (108x170 pixels) that I want to use in a larger, > higher resolution image that I'm creating. It is a fairly simple black > and white drawing -- actually, a light bulb with several curves and > angles and straight lines. > > Yes, I have expanded it to 1000x1575 pixels. Yes, I've zoomed to 800x, > selected non-black pixels and deleted them. > > What I have now is almost tolerable; but, I'd like to know alternatives, > preferably the simplest, most straight forward method to clean up the > jagged edges that are visible. Try this: - Select by color and click on one of the lines. - Selection to Path. - Select None. - Scale the image up to the desired size. - Path to selection. - Fill the selection with black. It doesn't work for everything, but for a line drawing or solid colored block figure, sometimes you can get amazingly smooth edges that way. ...Akkana ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
Re: [Gimp-user] How to enhance low resolution graphic for larger modified image ???
On Tue, Jan 26, 2010 at 1:55 PM, Jay Smith wrote: > On 01/26/2010 02:49 PM, helices wrote: >> I have a simple JPG (108x170 pixels) that I want to use in a larger, >> higher resolution image that I'm creating. It is a fairly simple black >> and white drawing -- actually, a light bulb with several curves and >> angles and straight lines. > This may be missing the point somehow, but if you used some kind of > "outlining" program (followed by a little editing) that creates a > vector-based (instead of bitmap based) image, you could then scale to > whatever size you want with perfect resolution, and then convert that > size to a bitmap format like JPG. If you save the vector version, you > can scale-and-save-out to as many sizes as you like. I would open Inkscape, import the graphic, then either do a trace or redraw it. Then delete the image, save as SVG, open in GIMP at desired size. > Back in the day I used Adobe Streamline for this kind of task, but I > don't know if that even still exists any more. Streamline was for OS 8-9 IIRC, and never got ported to OSX. I use inkscape to do tracing - it works better than the auto-trace feature in Adobe's products anyway (especially on blank-and-white images). Chris ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
Re: [Gimp-user] How to enhance low resolution graphic for larger modified image ???
On 01/26/2010 02:49 PM, helices wrote: > I have a simple JPG (108x170 pixels) that I want to use in a larger, > higher resolution image that I'm creating. It is a fairly simple black > and white drawing -- actually, a light bulb with several curves and > angles and straight lines. > > Yes, I have expanded it to 1000x1575 pixels. Yes, I've zoomed to 800x, > selected non-black pixels and deleted them. > > What I have now is almost tolerable; but, I'd like to know alternatives, > preferably the simplest, most straight forward method to clean up the > jagged edges that are visible. > > I will not use it at 1000x1575; but, I need it considerably more > detailed than 108x170. > > Please, comment and advise. > > Best Regards, > > Mike This may be missing the point somehow, but if you used some kind of "outlining" program (followed by a little editing) that creates a vector-based (instead of bitmap based) image, you could then scale to whatever size you want with perfect resolution, and then convert that size to a bitmap format like JPG. If you save the vector version, you can scale-and-save-out to as many sizes as you like. Back in the day I used Adobe Streamline for this kind of task, but I don't know if that even still exists any more. Jay ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
