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Article #6290

Canon scanner - ReadRight format?

#6290
From: Kjeld Borch Egevang
Date: Tue, 02 May 1989 14:52
24 lines
1578 bytes
I have tried using a Canon scanner and some software called ReadRight.
I wasn't really impressed of it's capabilities, so I thougt of having a
look at the pixels myself. It's possible to get a dump from the system
containing the graphic image - but I can't figure out the format. I really
tried hard to decipher the bits and I've found out this much:

1) The first part of the file is garbage and is not used
2) Then comes the graphic, line after line (horisontally). The lines start
   with a pattern (can't remember it right now) and an offset to the next
   line.
3) I guess the lines tell how long the distance is to the next point where
   black goes to white or vice versa.
4) It's kind of bit-oriented because I found something like:
   1. line: ...00010101010100101000000101
   2. line: ...0001010101010010100000010010000000
   (seccond line takes another byte to get one more bit)

I used a 300 dpi resolution. I suspect that there might be some floating
point numbers or some correction-bits.

Is there anybody out there who can help me?

| UUCP: kbe@dde.dk      (Kjeld Borch Egevang) | Dansk Data Elektronik
| or  ...mcvax!enea!dkuug!dde!kbe             | Denmark
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!lll-winken!uunet!mcvax!kth!sunic!dkuug!dde!kbe
From: kbe@dde.uucp (Kjeld Borch Egevang)
Newsgroups: comp.text
Subject: Canon scanner - ReadRight format?
Keywords: pixels, scanner, OCR
Message-ID: <149@mother.dde.uucp>
Date: 2 May 89 14:52:12 GMT
Organization: Dansk Data Elektronik A/S, Herlev, Denmark
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