Custom vendor format

Donald Regula, MD regula at
Mon May 12 18:33:35 EDT 2014

Hi, Tim-
Interesting idea!
May I request the infrastructure to implement a slight embellishment on 
the server-side?
Many of us use online virtual-slides for testing medical students.
It would be useful to have a mechanism to "shift" the locations in both 
X and Y by moving the origin.
If we randomly changed the origin on the Slide-Server with each session, 
no student could cache that information for the next examinee.
Hope this makes sense.

On 5/12/2014 1:05 PM, Blattner, Timothy J. wrote:
> Hello,
> I am working on a project at NIST (National Institute of Standards and 
> Technology) that deals with image stitching. The images are acquired 
> using a microscope stage that takes overlapping images. One of the 
> results of the stitching yields an 80k x 80k pixels image. I am 
> looking into visualization software for these very large images and 
> stumbled across open slide.
> I should not have a problem with outputting the final image into a 
> format that is supported by OpenSlide, but the idea came to me that it 
> might be exciting to provide a position list to OpenSlide instead.
> So I was wondering if it would be possible for me to add support into 
> OpenSlide to visualize images that are constructed using a CSV file 
> that contain 'path_to_file, x_pixel_position, y_pixel_position'. Now 
> the tricky part with this technique is we would need to do blending on 
> the overlapping regions, so either linear, average, or overlay; 
> however, I think that it will not be expensive to do blending on the fly.
> I have peaked around the source code and looked at various image 
> format vendors, and wanted to get some input on where to start with 
> this project and what would be the best way to hook it into OpenSlide.
> Regards,
> Tim
> ------
> Timothy Blattner
> _______________________________________________
> openslide-users mailing list
> openslide-users at

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