RE: Does this filter exist?
unsubscribe -Message d'origine- De : Guillermo S. Romero / Familia Romero [mailto:[EMAIL PROTECTED]] Envoyé : jeudi 21 septembre 2000 22:37 À : [EMAIL PROTECTED] Objet : Re: Does this filter exist? [EMAIL PROTECTED] (2000-09-21 at 2210.43 +0200): I should also mention that I would scale things up only as a last resort. If possible re photograph or re scan at a higher resolution. Say I have a 640x480 JPG I use for desktop background. I'd like that to be 1152x864. I can't simply rephotograph or rescan it. Then you are out of luck. Gargage in, garbage out. Pixels can not be created from the void, only calculated based in the original ones (calculated, not copied). If you want extra quality, I would select Cubic in the Scaling entry of the Environment category of Preferences window, it is slower, but better. GSR
RE: Does this filter exist?
unsubsribe -Message d'origine- De : Jon Winters [mailto:[EMAIL PROTECTED]] Envoyé : dimanche 24 septembre 2000 04:47 À : Stephan Henningsen Cc : Ben FrantzDale; Ian Boreham; [EMAIL PROTECTED] Objet : Re: Does this filter exist? On Thu, 21 Sep 2000, Stephan Henningsen wrote: On Fri, 22 Sep 2000, Jon Winters wrote: I should also mention that I would scale things up only as a last resort. If possible re photograph or re scan at a higher resolution. Say I have a 640x480 JPG I use for desktop background. I'd like that to be 1152x864. I can't simply rephotograph or rescan it. The easiest way to scale up copyright violations is to: Open the image Right mouse click and select: Image Scale Image... Then adjust the New Width and New Height and hit [ OK ] If you try to scale up beyond around 10% of the image size or if the image is very small things will degrade quickly. Do not expect good quality when scaling images up. Cheers! -- Jon Winters http://www.obscurasite.com/ "Everybody loves the GIMP!" http://www.gimp.org/
RE: Does this filter exist?
unsubscribe -Message d'origine- De : Stephan Henningsen [mailto:[EMAIL PROTECTED]] Envoyé : jeudi 21 septembre 2000 22:11 À : Jon Winters Cc : Ben FrantzDale; Ian Boreham; [EMAIL PROTECTED] Objet : Re: Does this filter exist? On Fri, 22 Sep 2000, Jon Winters wrote: I should also mention that I would scale things up only as a last resort. If possible re photograph or re scan at a higher resolution. Say I have a 640x480 JPG I use for desktop background. I'd like that to be 1152x864. I can't simply rephotograph or rescan it. -- -Stephan / / http://linux.e.iha.dk/~stephan
Re: Does this filter exist?
On Wed, Sep 20, 2000 at 09:42:44PM +0200, Stephan Henningsen [EMAIL PROTECTED] wrote: number of pixels in my image so that the extra pixels are interpolated, rather than simply repeated?" Exactly. How do I do that? =) Use the scale tool or "Image-Scale Image". The answer is so obvious that I still don't think this is what you wanted to know? -- -==- | ==-- _ | ---==---(_)__ __ __ Marc Lehmann +-- --==---/ / _ \/ // /\ \/ / [EMAIL PROTECTED] |e| -=/_/_//_/\_,_/ /_/\_\ XX11-RIPE --+ The choice of a GNU generation | |
Re: Does this filter exist?
On Thu, 21 Sep 2000, Marc Lehmann wrote: Use the scale tool or "Image-Scale Image". The answer is so obvious that I still don't think this is what you wanted to know? Thats how I do it but I try to avoid scaling things UP. -- Jon Winters http://www.obscurasite.com/ "Everybody loves the GIMP!" http://www.gimp.org/
Re: Does this filter exist?
On Thu, 21 Sep 2000, Marc Lehmann wrote: On Wed, Sep 20, 2000 at 09:42:44PM +0200, Stephan Henningsen [EMAIL PROTECTED] wrote: number of pixels in my image so that the extra pixels are interpolated, rather than simply repeated?" Exactly. How do I do that? =) Use the scale tool or "Image-Scale Image". The answer is so obvious that I still don't think this is what you wanted to know? And that won't stretch it like any ordinary (paint brush) graphics tool would? I mean an "intelligent" stretch tool. Like you said, not just repeat the same pixels. -- -Stephan / / http://linux.e.iha.dk/~stephan
Re: Does this filter exist?
[EMAIL PROTECTED] (2000-09-21 at 2206.16 +0200): Use the scale tool or "Image-Scale Image". The answer is so obvious that I still don't think this is what you wanted to know? And that won't stretch it like any ordinary (paint brush) graphics tool would? Yes, it would distort it. I mean an "intelligent" stretch tool. Like you said, not just repeat the same pixels. A basic rule of computing: computers are stupid. BTW, it will not repeat the pixels, but compute new values to give you a smooth transition. GSR
Re: Does this filter exist?
[EMAIL PROTECTED] (2000-09-21 at 2210.43 +0200): I should also mention that I would scale things up only as a last resort. If possible re photograph or re scan at a higher resolution. Say I have a 640x480 JPG I use for desktop background. I'd like that to be 1152x864. I can't simply rephotograph or rescan it. Then you are out of luck. Gargage in, garbage out. Pixels can not be created from the void, only calculated based in the original ones (calculated, not copied). If you want extra quality, I would select Cubic in the Scaling entry of the Environment category of Preferences window, it is slower, but better. GSR
Re: Does this filter exist?
On Thu, 21 Sep 2000, Stephan Henningsen wrote: On Fri, 22 Sep 2000, Jon Winters wrote: I should also mention that I would scale things up only as a last resort. If possible re photograph or re scan at a higher resolution. Say I have a 640x480 JPG I use for desktop background. I'd like that to be 1152x864. I can't simply rephotograph or rescan it. The easiest way to scale up copyright violations is to: Open the image Right mouse click and select: Image Scale Image... Then adjust the New Width and New Height and hit [ OK ] If you try to scale up beyond around 10% of the image size or if the image is very small things will degrade quickly. Do not expect good quality when scaling images up. Cheers! -- Jon Winters http://www.obscurasite.com/ "Everybody loves the GIMP!" http://www.gimp.org/
Re: Does this filter exist?
- Original Message - From: Stephan Henningsen [EMAIL PROTECTED] To: Marc Lehmann [EMAIL PROTECTED] Cc: Ian Boreham [EMAIL PROTECTED]; [EMAIL PROTECTED] Sent: Thursday, September 21, 2000 1:06 PM Subject: Re: Does this filter exist? On Thu, 21 Sep 2000, Marc Lehmann wrote: On Wed, Sep 20, 2000 at 09:42:44PM +0200, Stephan Henningsen [EMAIL PROTECTED] wrote: number of pixels in my image so that the extra pixels are interpolated, rather than simply repeated?" Exactly. How do I do that? =) Use the scale tool or "Image-Scale Image". The answer is so obvious that I still don't think this is what you wanted to know? And that won't stretch it like any ordinary (paint brush) graphics tool would? It would stretch it b stretching it, not like paintbrush does (which I believe is not antialiased.) Gimp antialiases but there is only so much information in an x by y pixel image. I mean an "intelligent" stretch tool. Like you said, not just repeat the same pixels. The best you are going to get is filtering the output of your enlargement which is essentially what you are looking for. Do you know of any software that does what you'r talking about? --Ben
Re: Does this filter exist?
On Mon, 18 Sep 2000, Ian Boreham wrote: At 04:39 AM 16/09/2000 +0200, Marc Lehmann [EMAIL PROTECTED] wrote: On Thu, Sep 14, 2000 at 08:12:44PM +0200, Stephan Henningsen [EMAIL PROTECTED] wrote: Is there a filter to blow an image up in double size and calculate the extra pixels, instead of simply stretching them, as it is done usually. Neither "blow up" nor "stretch pixels" are well-defined terms. What do you mean by them? I would assume that the intended question here is "How do I increase the number of pixels in my image so that the extra pixels are interpolated, rather than simply repeated?" Exactly. How do I do that? =) -- -Stephan / / http://linux.e.iha.dk/~stephan
Re: Does this filter exist?
[...] Neither "blow up" nor "stretch pixels" are well-defined terms. What do you mean by them? I would assume that the intended question here is "How do I increase the number of pixels in my image so that the extra pixels are interpolated, rather than simply repeated?" (just to nitpick, when you blow up an image, the pixels are interpolated, not repeated. That's why it looks blury. Without anti-aliasing you do get repitition. What gimp does (more or less) is a simple liniar interpolation to find out what inbetween colors are. IE if you have a black box on white, when you double the size you'll end up with a grey line between the black and white because that pixel would map to between a black and a white pixel.) Exactly. How do I do that? =) I think the ting to do is scale up normally, then use something like unsharp mask to get some detail back. I remember seeing a link (perhaps from this list) that was to information on unsharp mask and an even better shaprening filter someone had made. --Ben
Re: Does this filter exist?
On Wed, 20 Sep 2000, Ben FrantzDale wrote: snip I think the ting to do is scale up normally, then use something like unsharp mask to get some detail back. I remember seeing a link (perhaps from this list) that was to information on unsharp mask and an even better shaprening filter someone had made. That improved sharpening filter was warp sharp. Checkit: http://www.home.unix-ag.org/simon/gimp/warp-sharp.html I should also mention that I would scale things up only as a last resort. If possible re photograph or re scan at a higher resolution. Enjoy! -- Jon Winters http://www.obscurasite.com/ "Everybody loves the GIMP!" http://www.gimp.org/
Re: Does this filter exist?
On Thu, Sep 14, 2000 at 08:12:44PM +0200, Stephan Henningsen [EMAIL PROTECTED] wrote: Is there a filter to blow an image up in double size and calculate the extra pixels, instead of simply stretching them, as it is done usually. Neither "blow up" nor "stretch pixels" are well-defined terms. What do you mean by them? -- -==- | ==-- _ | ---==---(_)__ __ __ Marc Lehmann +-- --==---/ / _ \/ // /\ \/ / [EMAIL PROTECTED] |e| -=/_/_//_/\_,_/ /_/\_\ XX11-RIPE --+ The choice of a GNU generation | |
Re: Does this filter exist?
[EMAIL PROTECTED] (2000-09-14 at 2012.44 +0200): Is there a filter to blow an image up in double size and calculate the extra pixels, instead of simply stretching them, as it is done usually. Two tricks: - perfect one but limited: zoom image to 200% and screenshot. Problem is when ou image goes out of screen. - imperfect but always works: scale the image by 2, then apply a Pixelize with size 2. Is that what you want? If not, please define better. GSR
