[Digikam-devel] New icon view

[Matthias Welwarsky]

On Wednesday 27 May 2009 08:44:39 Matthias Welwarsky wrote:
> Try: fast transform to double of target size, then final step immediately
> with smooth transform. Quite fast and still good quality.

Whoops ;)

Sorry, failed test with a mail program on an Android device. I tapped the 
wrong email for reply.

Actually, this comment was towards the patch for thumbnail generation and 
display speedup. It's a trick I learned some time ago. Since SmoothTransform 
is slow on large images, first use FastTransform to resize to about double the 
target thumbnail size. Then, in a second step, resize to the final dimensions 
with SmoothTransform. The resulting thumbnail is of good quality and the 
operation is quite fast because the second step is done on a reasonably small 
image already.