how does openslide do image downsampling

[Benjamin Gilbert]

On 01/25/2015 03:25 AM, 石川　拓海 wrote:
> I would like to know how Openslide do image downsampling.

OpenSlide tries not to do any downsampling itself: it usually just 
returns the downsampled pixels already stored in the slide file. 
(Hamamatsu formats are an exception: OpenSlide sometimes creates extra 
slide levels using libjpeg's support for downsampling during JPEG decode.)

Do you have a specific question?

--Benjamin Gilbert