[Image-SIG] Image quality when resizing

[Hannu Krosing]

Chuck Esterbrook wrote:
> 
> Hi,
> 
> I'm using PIL 1.1.1 on Linux Mandrake 7.0 (equiv to RedHat 6.2) with Py 1.5.2.
> 
> I notice that when I resize() photographic images to be smaller, the
> quality of the image looks rather poor compared to doing the same operation
> in a desktop application such as Jasc's Paint Shop Pro 6 or Adobe's
> Photoshop. Typically an image is 200-600 pixels per side and gets resized
> down to a width 130 with aspect ratio preserved. A typical format would be
> 24-bit JPEG.
> 
> I tried all three resize arguments: NEAREST, BILINEAR, or BICUBIC.
> 
> Is anyone aware of this problem and its status?
> 
> If not, then I can post sample images and code.
> 
> The reason this is important is that I'm automating some of the image
> processing for a web site. However, if the automation results in lower
> quality images than the manual process, it won't be accepted.

You could try to automate it using Gimp if quality is paramount and PIL
can't 
offer acceptable quality.

AFAIK it has python scripting support.

--------------
Hannu