DMTXREAD(1) General Commands Manual DMTXREAD(1) NAME dmtxread - scan Data Matrix barcodes SYNOPSIS dmtxread [options] [FILE]... DESCRIPTION dmtxread searches the named input FILEs (or standard input if no files are named or the filename "-" is given) for ECC200 Data Matrix barcodes, reads their contents, and writes the decoded messages to standard output. OPTIONS -c, --codewords Only print the codewords extracted from a Data Matrix, and not the actual decoded message. -e, --minimum-edge=N Pixel length of smallest expected edge in image. -E, --maximum-edge=N Pixel length of largest expected edge in image. -g, --gap=N Use scan grid with gap of N pixels (or less) between lines. -l, --list-formats List the supported input image formats. -m, --milliseconds=N Stop scan after N milliseconds (per image). -n, --newline Print a newline character at the end of decoded data. -p, --page=N Only scan Nth page of images. -q, --square-deviation=N Maximum deviation (degrees) from squareness between adjacent barcode sides. Default value is N=40, but N=10 is recommended for flat ap- plications like faxes and other scanned documents. Barcode regions found with corners <(90-N) or >(90+N) will be ignored by the de- coder. -r, --resolution=N Decoding resolution in dots per inch (DPI). Only used for vectorial input images such as SVG, PDF, etc... This option accepts a single argument (eg: 300) as well as horizontal and vertical resolutions (eg: 300x150). The default resolution is 72dpi. -s, --symbol-size=[asr|RxC] Only consider barcodes of specific size or shape. a = All sizes [default] s = Only squares r = Only rectangles RxC = Exactly this many rows and columns (10x10, 8x18, etc...) -t, --threshold=N Set the minimum edge threshold as a percentage of maximum. For exam- ple, an edge between a pure white and pure black pixel would have an intensity of 100. Edges with intensities below the indicated thresh- old will be ignored by the decoding process. Lowering the threshold will increase the amount of work to be done, but may be necessary for low contrast or blurry images. -x, --x-range-min=N[%] Do not scan pixels to the left of pixel column N (or N%). -X, --x-range-max=N[%] Do not scan pixels to the right of pixel column N (or N%). -y, --y-range-min=N[%] Do not scan pixels below pixel row N (or N%). -Y, --y-range-max=N[%] Do not scan pixels above pixel row N (or N%). -C, --corrections-max=N Correct at most N errors per image (0 = correction disabled). -D, --diagnose Make copy of image with additional diagnostic data. -M, --mosaic (experimental) Interpret detected regions as Data Mosaic barcodes. -N, --stop-after=N Stop scanning after Nth barcode is returned. -P, --page-numbers Print each decoded message with its fax/tiff page number. -R, --corners Prefix the decoded message with the barcode's corner locations. -S, --shrink=N Internally shrink image by factor of N. Shrinking is accomplished by skipping N-1 pixels at a time, often producing significantly faster scan times. It also improves scan success rate for images taken with poor camera focus provided the image is sufficiently large. -U, --unicode Print Extended ASCII characters in UTF-8 Unicode. -v, --verbose Use verbose messages. -V, --version Print program version information. --help Display this help message and quit. STANDARDS ISO/IEC 16022:2000 ANSI/AIM BC11 ISS DIAGNOSTICS Exit status has following possible meanings: 0 At least one barcode was found and decoded 1 No barcodes were found >1 Error occurred that prevented command from executing normally BUGS Email bug reports to mike@dragonflylogic.com AUTHOR Copyright (C) 2008, 2009 Mike Laughton June 2, 2011 DMTXREAD(1)
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | STANDARDS | DIAGNOSTICS | BUGS | AUTHOR
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