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C Perl Makefile
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Tinytag ------- Tinytag is a simple tag reader designed for embedded applications such as mobile phones. It is capable of reading high capacity square tags at high framerate. Tinytag is a barcode reader - it will read a binary code from the tag but cannot provide 3D position or pose information. Users requiring 3D support should see the Cantag project for more details. * It is written in ANSI C and contains no floating point operations (fixed point is used where required). * Multiple tag sizes are supported (see the EDGE_CELLS parameters in options.h) * Use of CRC or simple checksum (see USE_CHECKSUM in options.h). CRC polynomial is selected automatically at compile time to be most suitable for the chosen payload size Compilation ----------- 1) Edit the options for your tag design in options.h 2) Edit the Makefile if you wish to enable ImageMagick support for loading and saving images. If you don't choose to use ImageMagick support then Tinytag is limited to using ascii, grey-scale PNM images. Also check which targets you want to build - see the list of programs below. Note that for Video4Linux you must hard code the image size in options.h for the camera that you are using. 3) Run make Usage ----- codegen - this program will generate an image of a tag and save it to disk. The data to be coded should be given in hexadecimal: ./codegen 0123456789ABCDEF output.pnm imagetest - this program will load an image from disk, search for a tag and output the decoded tag data: ./imagetest output.pnm codetest - integrated test harness. This program will generate a tag image in memory and then attempt to recognise it. The decoded data are then compared to the input data to ensure no errors have occurred: ./codetest 0123456789ABCDEF v4ltest - Video4Linux test program. This program will open the specified Video4Linux device (currently only cameras supporting YUV palettes devices are supported) and recognise images from it: ./v4ltest /dev/video0 Andrew Rice email@example.com