A comprehensive toolkit to extract barcode information from images.
The Softek Barcode Reader Toolkit is typically used in applications that scan and index documents. The barcode information is read from documents at high speed and with exceptional accuracy, allowing the application to index the image without operator intervention.
Features:
The Softek barcode Reader SDK extracts barcode information from image files. The shell tool is available for Linux, Solaris and OSX.
The bardecode command provides an interface to the barcode reader toolkit from the shell. For example, the following command will scan an image file for barcodes and print the values:
bardecode -t any -m -f somefile.tif
The -t flag is used to describe which types of barcode should be read. Values can be combinations of code128, code25, code39, codabar, ean8, ean13, pdf417, upca, upce or any combined with a "|" symbol. e.g. "code39|code128|ean8".
The -m flag indicates that the tool should extract multiple barcodes from the image rather than stopping as soon as the first barcode is detected.
You can use the shell tool to add barcode reading functionality to shell scripts, perl and php.
Other Options
| -c min_length | Minimum length of barcode. |
| -C max_length | Maximum length of barcode. |
| -d scan_direction | Scan direction mask 1 = Left to Right, 2 = Top to Bottom 4 = Right to Left and 8 = Bottom to Top. default is 15. The scan direction mask controls the directions in which. the barcode reader will look for a barcode. With this version it it now possible to scan for barcodes in any rotation with one call to the reader. |
| -i page_index | Page number of image indexed from 1 |
| -j jump | Frequency at which scan lines are sampled, default is 1 |
| -k skew tolerance | Skew tolerance 0 = off to 5 = any angle |
| -L oversample_sep | Distance between the line samples when over-sampling is used. Default value is 3. |
| -m | Scan for multiple barcodes |
| -M min_space_width | Minimum space allowed for a space between bars. |
| -n noise_reduction | Noise Reduction level (0 = off, typical value is 20. Only effective if the -d flag specifies a purely horizontal or vertical search. |
| -N noise_reduction | Advanced Noise Reduction (0 = off, typical value is 20). Only effective if the -d flag specifies a purely horizontal or vertical search. |
| -o min_occurs | Minimum number of matching scan lines, default 2 |
| -O | Sample the scan lines in blocks of 3 with each line separated by oversample_sep lines (see below). |
| -p pref_occurs | Preferred number of matching scan lines, default 5. |
| -P | Show page numbers. |
| -q quiet_size | Number of pixels wide for the quiet zone around bar code. |
| -S file_template | Split a multi-page TIF file into smaller TIF files. The first page of each new file will contain a barcode The template must include %d to index the files e.g. file%d.tif. Must be used with -m flag. |
| -t barcode_type | Values can be code128, code25, code39, codabar, ean8, ean13, pdf417, upca, upce or any. |
| -T color_threshold | Set the color threshold. |
| -w | Print TIF Warnings to STDERR. |
The Softek Barcode reading toolkit extracts barcode information from images.
You can add barcode recognition to your application with only a few lines of code. No knowledge of images is necessary to integrate the toolkit into your application...
The following VB 6 code will extract barcode information from an image file:
Set oBar = CreateObject("SoftekATL.Barcode")
oBar.ScanBarCode (filePath)
nBarCount = oBar.BarCodeCount
For i = 1 To n
MsgBox(oBar.barstring(i))
Next i
Accuracy & Performance Considerations
1-D barcode types: Codabar, Code 25, Code 39, Code 128, EAN 8, EAN 13, Patch, UPC A AND UPC E
2-D barcode types: PDF-417
Image formats: TIF, JPG, GIF, PNG and BITMAP.
Please see also Barcode Reader Toolkit for Windows
Platform:
Windows XP / 2000 / 2003 or later. Or NT4 Server, Windows 9x, Me, NT.
Additional Information: Barcode Reader Toolkit for Linux, OSX and Solaris |
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