Re: [libdmtx-development] libdmtx use in LIMS project

[Dr. K. K. <kar...@me...>]

Hi Mike !

> > I tried to read one of these from a picture on the manufacturers
> > web-page and it did not work.
>
> Actually this sample image is just a little too small for libdmtx right
> now. This is a known problem, though, and will be fixed in the next release
> (hopefully). I will cheat a little bit here to show what I mean:
>
>    $ convert -scale 400 2D-code_200f.png 2D-code_200f_large.png
>    $ dmtxread -n 2D-code_200f_large.png
>    AB09795286

Ah, great ! I feared the company might have used some proprietary encoding. 
This is fantastic, we are now able to fully implement our sample tracking 
system with low-cost off the shelf components ! I am sure this will be of 
great help in getting our LIMS out to the various small labs.

> > If not, and if you are willing to help, I would be interested
> > in sponsoring a student to develop something like this as part
> > of our gnulims project.
>
> I haven't heard of this exact solution but I know one guy who was doing
> some work with Windows+libdmtx to implement a streaming webcam barcode
> scanner. I will forward your email to him and see if he can help you out.
> (sorry everyone else, I don't know if he wants his project to be known yet
> so there's no info here)

Lets see if he wants to participate, any help is appreciated! 
If not, I have a friend at the computer vision departement of our technical 
university and I am quite confident that we could find someone who would be 
willing and able to do it. The solution we require will also have to be 
end-user proof and we definitely want it to be GPL'd so it may be best to do 
it in-house. :)

Thanks a lot for your help and especially for making libdmtx. We are very 
happy that we can use it in our LIMS, hopefully we can get a working system 
by autumn this year.

All the best,
Cheers,
Karl


>
> Thanks,
> Mike
>
>
> On Thu, Jun 5, 2008 at 2:00 AM, Dr. Karl Kashofer <
>
> kar...@me...> wrote:
> > Hi all !
> >
> > We are currently starting a sourceforge project for a GLP'd laboratory
> > information management system (gnulims). We want to track samples (Tubes,
> > Blocks, Slides) with 2D codes.
> > Yesterday i started researching how to read/generate these codes as the
> > commercial solution offered to us is about 3000€ a piece. :)
> > As we want our LIMS to be easily deployable even in labs which dont have
> > the
> > money to get big commercial solutions we are interested in finding a free
> > as
> > in freedom solution.
> >
> > So I would like to use libdmtx to generate codes for printing on paraffin
> > block cassettes and slide labels. These should be easy to read as we will
> > also generate them with libdmtx.
> >
> > However, for deep-freezing in liquid nitrogen we will have to use
> > pre-labelled
> > tubes which have a 2D code on the bottom. I tried to read one of these
> > from a
> > picture on the manufacturers web-page and it did not work.
> >
> > I have uploaded the picture here:
> > https://www.kashofer.org/shared/2D-code_200f.png
> >
> > Would it be possible for one of you to find out why this is not readable
> > ?
> >
> > If we can get libdmtx to read these codes, we would then like to use a
> > simple
> > webcam microscope like this one to read labels off our samples.
> > http://www.digitus.de/scripts/digdetail.asp?artnr=DA%2D70350&showpfad=ja
> >
> > So to come to a conclusion I want to ask if you know of any Windows (our
> > clients will be on windows, unfortunately) application which could read a
> > data stream from this attached webcam and then just decode any datamatrix
> > code that is presented to the camera and pass the content on to the web
> > browser via keyboard hooks ?
> >
> > If not, and if you are willing to help, I would be interested in
> > sponsoring a
> > student to develop something like this as part of our gnulims project.
> >
> > Looking forward to hearing from you,
> > Cheers,
> > Karl
> >
> >
> > --
> > ****************************
> > Mag. Dr. Karl Kashofer
> > Institut für Pathologie
> > Medizinische Universität Graz
> > Auenbruggerplatz 25
> > 8036 Graz
> > ****************************
> >
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-- 
****************************
Mag. Dr. Karl Kashofer
Institut für Pathologie
Medizinische Universität Graz
Auenbruggerplatz 25
8036 Graz
****************************