[Blindmath] Question about converting Math Book Content

Pranav Lal pranav.lal at gmail.com
Wed Jan 27 10:07:46 CST 2010


Hi John,

Many thanks for the explanation. The technique has not worked for me but I
used to think it is a posibility.

I now know better.
Pranav

-----Original Message-----
From: blindmath-bounces at nfbnet.org [mailto:blindmath-bounces at nfbnet.org] On
Behalf Of John Gardner
Sent: Wednesday, January 27, 2010 10:47 AM
To: Blind Math list for those interested in mathematics
Subject: Re: [Blindmath] Question about converting Math Book Content

I will be very surprised if this works.  The reason that Infty Reader 
requires higher resolution than other OCR is that it cannot depend on 
things like characters all being on one line.  In math, characters can 
be distributed over a wide area.  There are also quite subtle 
characteristics that distinguish, for example, a lower case alpha from a 
lower case a or italic a.  And there are a number of big characters that 
might look like a collection of alphabetic characters.  Recognition 
accuracy degrades rapidly when parts of characters begin to touch when 
they are, in principle, separated by white space.  So artificially 
increasing resolution will probably not correct those "touches".

John


On 1/26/2010 4:17 PM, Pranav Lal wrote:
> Hi all,
>
> ABBYY Fine Reader can increase the resolution of scanned images. This has
> not worked for me but it is a long time since I tried it with Infty
Reader.
> Use abbyy fine reader to increase the images resolution to 600 DPI and
then
> save it as an image. Send the saved image to Infty Reader.
>
> Roopakshi, I remember us discussing this technique. Have you been able to
> get it to work or is my organic ram playing tricks again?
>
> Pranav
>
>
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