From: Dale Johnstone (DaleJohnstone@email.com)
Date: Mon Apr 09 2001 - 12:40:40 MDT
Eugene wrote:
>
> A quick question.
>
> Medical and biological imaging uses greyscale images in excess of 12 bit
> dynamics. There's definite loss in information when you go convert to 8
> bit images, even though quality may be sufficient for some purposes:
>
> http://www.lrz-muenchen.de/~ui22204/worm.png
>
> Assuming, I want to scan, say, electromicrographs with up to 16 bit/pixel,
> which choices do I have? Starting with scanning, and proceeding to
> processing. Which hardware/software would you recommend? It can be
> relatively high-end.
>
Not sure about the hardware, but for software LeadTools do a range of high quality medical imaging components:
http://www.componentsource.com/cs/Catalog/CSProduct.asp?ProductOptions=3969_38X
http://www.componentsource.com/cs/Catalog/CSProduct.asp?ProductOptions=3838_38X
They support high bit depths, and I notice one of them mentions scanning (TWAIN or ISIS). Well pricey though.
Failing that, have you thought about using a non-linear scale and/or a high-pass filter to remove just the (usually redundant) DC
components? You might get away with regular 8bpp tools without a loss of detail then.
Regards,
Dale Johnstone.
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