Re: [Gimp-developer] Dithering

2004-01-21 Thread Daniel Egger
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 - -BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On Jan 20, 2004, at 5:48 pm, Sven Neumann wrote: Well, actually we'd like to add interpolation to the GIMP canvas as well. At least optionally. Modern computer hardware seems fast enough to do this,

Re: [Gimp-developer] Dithering

2004-01-21 Thread Adam D. Moss
Daniel Egger wrote: On Jan 20, 2004, at 5:48 pm, Sven Neumann wrote: Well, actually we'd like to add interpolation to the GIMP canvas as well. At least optionally. Modern computer hardware seems fast enough to do this, especially when one takes advantages of CPU acceleration features (MMX, SSE,

Re: [Gimp-developer] Dithering

2004-01-21 Thread Daniel Egger
Am Mit, den 21.01.2004 schrieb Adam D. Moss um 20:28: In OSX many applications tend to provide a quick redraw for pannings but start a timer which will refine the display once it was static for a while. Hee hee... it's interesting how things can come full-circle. GIMP 0.5[34] did

RE: [Gimp-developer] Dithering

2004-01-20 Thread Austin Donnelly
that to be fast, right?) Austin -Original Message- From: [EMAIL PROTECTED] [mailto:gimp- [EMAIL PROTECTED] On Behalf Of David Gómez Sent: 07 January 2004 22:04 To: Sven Neumann Cc: Gimp-devel Subject: Re: [Gimp-developer] Dithering Hi Sven ;), The GIMP display canvas uses

Re: [Gimp-developer] Dithering

2004-01-20 Thread Sven Neumann
Hi, Austin Donnelly [EMAIL PROTECTED] writes: That's because the screen display code doesn't smooth the image when it scales it, for speed reasons. Dedicated viewing programs can afford to do a better job showing the image because they won't be re-drawing it quite so often (imaging panning

Re: [Gimp-developer] Dithering

2004-01-07 Thread David Neary
Hi David, David Gómez wrote: I've scanned some jpeg images with a 24bit depth. Some of them are old photographies in blackwhite that show 'bands' when are displayed on a 16 bit depth display. This is a normal phenomenon when moving to higher bitdepths. Unless you're talking about 16 bits in

Re: [Gimp-developer] Dithering

2004-01-07 Thread Manish Singh
On Wed, Jan 07, 2004 at 09:43:09PM +0100, Sven Neumann wrote: Hi, David G??mez [EMAIL PROTECTED] writes: I've scanned some jpeg images with a 24bit depth. Some of them are old photographies in blackwhite that show 'bands' when are displayed on a 16 bit depth display. After digging in

Re: [Gimp-developer] Dithering

2004-01-07 Thread David Gmez
Hi David ;), This is a normal phenomenon when moving to higher bitdepths. Unless you're talking about 16 bits in total, and not 16 bits per channel, in which case I'd be a bit mystified... Yes, i meant 16 bits per channel ;) Floyd-Steinberg dithering is basically a way to approximate more

Re: [Gimp-developer] Dithering

2004-01-07 Thread David Gmez
Hi Yosh ;), The GIMP display canvas uses the dithering routines from GdkRGB which is probably what you are refering to. Of course this does only affect the display, not the image data. I am not sure but I think I remember a plug-in that could apply dithering to RGB images w/o converting

Re: [Gimp-developer] Dithering

2004-01-07 Thread David Gmez
Hi Sven ;), The GIMP display canvas uses the dithering routines from GdkRGB which is probably what you are refering to. Yes i was referring to GdkRGB dithering, but it seems that was not the cause of the problem, as i said in my previous mail, and i was wrong thinking that was caused by gimp