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Re: [TwinCLinG] About bar codes

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  • Vardhman Jain
    ... Thanks for the url it solved my problem. vardhman
    Message 1 of 3 , Dec 1, 2003
      Raghuram Vijapurapu wrote:
      > Just a quick pointer, there is a toolkit available for reading barcodes.
      > Probably Mr. Jain would like to have a look at it:
      > http://www.softeksoftware.co.uk/linux.html
      > Further, if you want to develop some code or wrapper over it, it would
      > be a *good_thing*.
      > Ram.
      > *[Dr. Atul Negi on Mon, Dec 01, 2003 at 11:43:51AM +0800]:
      >>On 29 Nov 2003 ilughyd@yahoogroups.com wrote:
      >> Message: 3
      >> Date: 29 Nov 2003 14:50:30 +0530
      >> From: suman <mansu@...>
      >> Subject: Re: Query over Barcode...
      >> On Tue, 2003-11-25 at 13:28, Vardhman Jain wrote:
      >> > Hi,
      >> > Has any one tried to develop a barcode read/write using application. I
      >> > want to try one. Can some one tell me if i require some special hardware
      >> > for writing reading barcode or a simple printer can print the code. Also
      >> > is a simple scanner sufficient for scanning the code. I heard that some
      >> > software are available for generating the barcode number jpeg, please
      >> > confirm if this is possible.
      >> >
      >> > vardhman
      >> i donno of anyone which can actually read a barcode on linux but there
      >> is a software called kbarcode which generates barcode slips which can be
      >> then attached to books.
      >> but i never tried it.
      >> -suman
      >>I can support anybody who would like to develop something like reading
      >>a bar code. My support will be at the image processing level.
      >>Basically you need to scan the barcode using a 200 dpi scanner,
      >>it depends on the smallest dimension of the bars to be read.
      >>All you have to do is to write code for a good edge detection method.
      >>(such code also exists, just google for it.) Each edge which you
      >>get in the image is one side of your bars. You need to count
      >>the distances between the edges to know whether its a thick bar
      >>or a thin bar. To be sure you can also get the size of the whitespace
      >>between the bars. Further knowledge of the bar code structure
      >>is needed and then you have some thing functional.
      >>Good luck.
      >>Atul NEGI, Ph.D.
      >>Office: Room M209
      >>Dept. of Computer & Information Sciences, University of Hyderabad,
      >>Gachibowli, HYDERABAD, 500 046 INDIA
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      Thanks for the url it solved my problem.

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