python image thumbnail generator?

[Fredrik Lundh]

Mike C. Fletcher wrote:

> The core function looks something like this:
>
> import Image # this is PIL
>
> def getThumbnail( filename, size = (32,32) ):
>    '''Get a thumbnail image of filename'''
>    image = Image.open(filename)
>    rx, ry = image.size[0]/float(size[0]), image.size[1]/float(size[1])
>    if rx > ry:
>        resize = int(size[0]), int(round(image.size[1]*(1.0/rx), 0))
>    else:
>        resize = int(round(image.size[0]*(1.0/ry), 0)), int(size[1])
>    image = image.resize( resize, Image.BILINEAR )

footnote: if you're creating thumbnails from JPEG or PhotoCD
images, using the "thumbnail" method can be a lot more efficient
(unlike resize, it tweaks the codec so it doesn't have to load the
entire full-sized image).

footnote 2: Image.ANTIALIAS is slower, but tends to give a
much better result than Image.BILINEAR, especiall for "noisy"
images.

</F>