Resources bcTester and our other products read barcodes from images. For information about supported barcode symbologies and required image quality please look at our Basic Information. For help with the recognition please read our White Paper Barcodes not recognized - what can I do? FAQ - Frequently Asked Questions Here you find answers to questions most frequently asked about barcode recognition.  Which barcode types can be recognized?  Which file formats are supported?  Can barcodes in Adobe PDF files also be recognized?  Why can't my barcodes be recognized? If you don't find your answers here, please contact us!

FAQ - Answers Which barcode types can be recognized? The linear barcode types Code 39, Code 39 extended and Code 32 EAN 8, EAN 13, UPC A, UPC E GS1 DataBar (POS) Code 128, EAN128 Codabar Code 2/5 interleaved and Code 2/5 Industry Code 93 can be read with bcTester.

Code 39

In addition to that a large number of rare barcode types is supported: Code 2/5 IATA, Code 2/5 3 Matrix,       Code 2/5 3 Datalogic, Code 2/5 BCD Matrix,       Code 2/5 inverted Code 11 Code 93 extended. As a special feature Pharmacodes and Patchcodes can be read. The recognition of two dimensional barcodes Aztec, PDF417, DataMatrix (ECC000 to ECC140 and ECC200) and QR Code is also possible. These barcodes contain a lot more information than the usual barcodes, dependent on the type and size, up to 3000 characters can be encoded in one barcode. The whole text of a DIN A4 page would fit in one single barcode. Because of an integrated error correction, 2D barcodes are also more tolerant towards data errors, which can occur during printing or scanning. The PDF417 consists of multipe rows. In this barcode, the whole character set can be encoded, up to 1850 characters. It is variable in width and height. The PDF417 was chosen by the KBV (Kassenärztliche BundesVereinigung, Association of Statutory Health Insurance Physicians) to be printed on medical forms. The DataMatrix is used by the German Post as a "Stampit" stamp. Binary data is also encoded. The QR Code was developed in Japan. It can also contain the japanese Kanji characters.

PDF 417                        Data Matrix                           Aztec                            QR Code

Which file formats are supported? Standard scope of supply: BMP files Dr. Halo files (grayscale) DDS files EXR files Raw Fax G3 files GIF files HDR files ICO files IFF files JNG files JPEG/JIF files JPEG-2000 File Format JPEG-2000 codestream KOALA files Kodak PhotoCD files MNG files PCX files PBM files PGM files PNG files PPM files PhotoShop files Sun RAS files SGI files TARGA files TIFF files WBMP files XBM files XPM files Adobe PDF Documents (PDF) MultiTiff Files and multipaged PDF-Documents are seperated into single pages when the program is started.

Can barcodes in Adobe PDF files also be recognized? Yes, bcTester can open up Adobe PDF-Files and read barcodes in the documents. PDF-Files can contain a large number of components (text, fonts, logos, images, links) and have different structures. Before the barcode recognition starts, every page is interally converted into a picture frame. Given that the resolution is chosen high enough (usually 300 dpi), the barcode recognition can start.

Why can't my barcodes be recognized? If your barcodes cannot be recognized, there are several possible reasons. We offer you detailed descriptions of problems and solutions for download under http://www.qualitysoft.de/en/download/bctipps_en.pdf

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