Lots of black around MIRAX slides

[ajwood at mta.ca]

Hi,

I'll narrow my question down a little bit... The dimensions I get back from
`openslide_get_layer_dimensions` seem to always be larger than the actual
image. For roughly square images, the y dimension is about twice as large as
the x dimension.

Is there a good way to get the dimensions of the actual image area (i.e. the
blob somewhere in a middle where alpha>0)?

Thanks,

Andrew


Quoting ajwood at mta.ca:

>
>
> Hi,
>
> I'm noticing that when I read MIRAX slides, there is a lot of black around
> the
> valuable part of the image. This black doesn't show up when I convert the
> slides with a Windows proprietary conversion software, but it does when I
> read
> the slides with OpenSlide.
>
> Is the proprietary software simply smart enough to crop away the black, or am
> I
> maybe reading the slide incorrectly?
>
> Thanks,
>
> Andrew
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