Re: [Gimp-developer] Lanczos algorithm funnyness?

2005-11-19 Thread Adam D. Moss
Steve Stavropoulos wrote: On 11/19/05, Dag Rune Sneeggen wrote: John Leach wrote: Looking at the original, I can see what it's accentuating but it looks bad. Other photos look great, much sharper compared with the cubic algorithm. This seems rather too sharp, in the wrong place. But

Re: [Gimp-developer] Lanczos algorithm funnyness?

2005-11-19 Thread Sven Neumann
Hi, John Leach [EMAIL PROTECTED] writes: I just downloaded the 2.3.5 snapshot and had a go with the Lanczos resizing algorithm. It seems to bring out some strange artifacts in one photo (actually, the first I randomly tried). The Lanczos implementation in CVS is buggy and unless someone

Re: [Gimp-developer] Lanczos algorithm funnyness?

2005-11-18 Thread Dag Rune Sneeggen
John Leach wrote: Hi all, I just downloaded the 2.3.5 snapshot and had a go with the Lanczos resizing algorithm. It seems to bring out some strange artifacts in one photo (actually, the first I randomly tried). Looking at the original, I can see what it's accentuating but it looks bad. Other

Re: [Gimp-developer] Lanczos algorithm funnyness?

2005-11-18 Thread Alastair M. Robinson
Hi, Dag Rune Sneeggen wrote: But still, its clearly a faulty algorithm... Quite serious as well(?) This might be a silly question, but why is GIMP using interpolation at all when reducing images? Shouldn't it be doing weighted averaging of all the source pixels that contribute to a

Re: [Gimp-developer] Lanczos algorithm funnyness?

2005-11-18 Thread Steve Stavropoulos
On 11/19/05, Dag Rune Sneeggen wrote: John Leach wrote: Looking at the original, I can see what it's accentuating but it looks bad. Other photos look great, much sharper compared with the cubic algorithm. This seems rather too sharp, in the wrong place. But still, its clearly a faulty

Re: [Gimp-developer] Lanczos algorithm funnyness?

2005-11-18 Thread pcg
On Sat, Nov 19, 2005 at 02:18:03AM +, Alastair M. Robinson [EMAIL PROTECTED] wrote: But still, its clearly a faulty algorithm... Quite serious as well(?) This might be a silly question, but why is GIMP using interpolation at all when reducing images? Shouldn't it be doing weighted