2D barcodes creator/decoder -- Libdmtx

（2维条码生成/解码软件）



Libdmtx is a 2D barcode, or Data Matrix barcodes, creator and decoder.

it took me a while to install it. here is mainly procedure of installation:

download libdmtx-0.7.0.tar.gz from http://www.libdmtx.org/

$ tar -zxf libdmtx-0.7.0.tar.gz

go to new libdmtx folder

$ ./configure

i got an error message:

checking for MAGICK... no
configure: error: dmtxread/dmtxwrite requires Wand >= 6.2.4

that's because i am using ubuntu. alright, i need to install ImageMagick from the source.
download ImageMagick source file, unpacked,

$ ./configure

$ make

$ sudo make install

(edit: I may need this:

$ sudo apt-get install libmagick++-dev

$ sudo apt-get install libgraphicsmagick1-dev

)

i may need to install g++ before install ImageMagick

$ sudo apt-get install g++

got anther error when i ran ./configure:

/usr/bin/ld: cannot find -lperl

ok, need to install libperl

$ sudo apt-get install libperl-dev

then, go back to install ImageMagick, and libdmtx.

all done..



To read a 2D barcode:

$ dmtxread /~/Desktop/image.png  

$ dmtxread -N 1 /home/czhang/mypro/UIM.jpg >> /home/czhang/mypro/UIM.txt

read barcode and export code to text file.

PS: This command will take a while (maybe 5 to 15 seconds) to finish decoding a 2D barcode image.

To speed up decoding, take a look command option. 

To create a 2D barcode:

$ dmtxwrite <(echo -n 2dbarcodecontent) -o image.png

Edit:
get web-cam capture software from here:

http://www.firestorm.cx/fswebcam/

Fedora install:

root$ yum install fswebcam

may need to install GDlib:
http://www.libgd.org/Downloads

take a photo with webcam:

$ fswebcam -F 15 -r 352x288 --no-banner --save /mnt/cdrive/UIM.jpg