OpenSlide.createThumbnailImage(size) creates poor-quality images when the desired size is significantly smaller than the smallest layer included in the slide.
For example we have a slide with three layers. The sizes of the layers are approximately:
54000 x 43000
13500 x 10750
3375 x 2688
When I create a size 300 thumbnail (with OpenSlide.createThumbnailImage(300)) it is noticeably grainy. Note that this is not the case with the python API (get_thumbnail), which creates a nice looking thumbnail of that size from the same slide.
OpenSlide.createThumbnailImage(size)creates poor-quality images when the desired size is significantly smaller than the smallest layer included in the slide.For example we have a slide with three layers. The sizes of the layers are approximately:
When I create a size 300 thumbnail (with
OpenSlide.createThumbnailImage(300)) it is noticeably grainy. Note that this is not the case with the python API (get_thumbnail), which creates a nice looking thumbnail of that size from the same slide.