At 1:16 pm +1000 1/8/06, Jim Glaspole wrote:
Ian Cheong wrote:
At 11:45 am +1000 1/8/06, David Guest wrote:
Ian Cheong wrote:
curious - how many bits?
We scanned as raw TIFF which was a mistake in retrospect. 4 meg files
are not uncommon. One is 32 meg.
I understand compressed TIFFs get down to about 50k.
David
If you can convert them to binary (one bit depth black and white with
appropriate threshhold), they will take up way less space.
Ian.
Isn't there a setting on the scanner software that controls the
compression? Our practice software controls the scanner, but the
preferences were already set by the scanning software. That said, our
blob file is already over 2G, so I am keenly awaiting the widespread
uptake of Argus and the like by specialists and hospitals.
Jim
I think David said they might have got those settings wrong to start.
So he wants to convert them after the fact, which is no problem.
I am seriously looking at using Acrobat for scanning, as it can do
attempted OCR and still keep bitmaps of the bits it can't OCR
properly. So the resulting pdfs are text searchable. OCR speed
appears to a minor problem. (Usual problem of compression CPUs vs
storage MB tradeoff.)
I have not been able to find any good open source OCR products yet,
as the technology is apparently hard work.
Ian.
--
Dr Ian R Cheong, BMedSc, FRACGP, GradDipCompSc, MBA(Exec)
Health Informatics Consultant, Brisbane, Australia
Internet: [EMAIL PROTECTED]
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