Most barcodes store text information but 2-D barcodes (such as QR-Code, Datamatrix and PDF-417) can also be used to store binary data. This article explains how to get at the binary data using the Softek Barcode Reader Toolkit. 2-D barcodes don’t have any way of telling the barcode reader how they’ve been encoded so it’s
Version 9.1.4 of the barcode reader SDK has been released. This applies to both the Windows version and the Linux/OSX/iOS/Android version. Most of the changes apply to 2-D barcode recognition as follows: The requirement for a minimum distance between 2 identical 2-D barcodes has been removed. A new property called Min2DLength (minimum length of a
Steps to BardecodeFiler Desktop to BardecodeFiler Service: 1. Save your current BardecodeFiler settings to an “ini” file. 2. Right click on BardecodeFiler and select “Run as admin” 3. Go to Options/Service Settings/BardecodeFiler Service 4. Import the settings from the “ini” file. 5. Adjust the input/output/processed and exception folders (they do not get imported). 6. Set
Softek Barcode Reader SDK for Linux Version 9.1.1.1 has been released. The main change in this version is the addition of functions to read from TIF, and JPEG files held in memory rather than as files on disc. The new function is called mtScanBarCodeFromString. The C interface has also been brought in line with the
Softek Barcode Reader SDK for Windows Version 9.1.1.1 has been released. The main change in this version is the addition of functions to read from TIF, PDF, JPEG,GIF or PNG files held in memory rather than as files on disc. The new functions are called ScanBarCodeFromString for the DLL or ScanBarCodeFromByteArray for the .Net interface.
Here is the command line to convert an Adobe PDF document to TIF on Linux, in a suitable format to be used as input for the Linux version of the Softek Barcode Reader Toolkit: For color documents: gs -dNOPAUSE -r300 -sDEVICE=tiffscaled24 -sCompression=lzw -dBATCH -sOutputFile=output.tif input.pdf For black and white: gs -dNOPAUSE -r300 -sDEVICE=tiffg4 -sCompression=lzw -dBATCH
Here’s some C code that shows how to read an opencv cv::Mat image using the barcode reader toolkit. The main points to note are: Read the image using the cv::IMREAD_GRAYSCALE flag Flip the image vertically Align the scan lines to 4 byte boundaries #include <barcode.h> #include <iostream> #include <opencv2/core/core.hpp> #include <opencv2/highgui/highgui.hpp> #include <opencv2/imgproc/imgproc.hpp> static void
If you are handling binary data in barcodes such as you find in some 2-D barcodes (PDF417, QrCode or DataMatrix) then the following method will allow you to create a byte array that contains the original binary data from the barcode – including all the null and 8-bit values. 1. Using Quoted printable Encoding barcode.Encoding
The default time out for the scan of a page on Linux is 5000ms, but how can you detect if a time out has occurred? The following snippet of C code can be used in bardecode.c at the end of the main function… uint16 t; STGetParameter(hBarcode, ST_DID_TIMEOUT, &t) ; if (t)
Here is a list of all possible values that can be returned for the bar code type. Note that GS1-128 is a subset of Code 128 and is controlled by the ReadCode128 property. Value Property STSetParameter value for Linux “CODABAR” ReadCodabar ST_READ_CODABAR “CODE128” ReadCode128 ST_READ_CODE128 “CODE25” ReadCode25 ST_READ_CODE25 “CODE39” ReadCode39 ST_READ_CODE39 “CODE93” ReadCode93 ST_READ_CODE93 “DATABAR”