What are VIR and VIR Toolkit

The VIR (Virtual Image Rendition) concept and its accompanying Toolkit were developed by Dunord to provide tools for the application developer who wants better bi-tonal images. VIR offers a set of routines to extract information from gray images and process it.

VIR Routines

The VIR toolkit offers several routines callable from C or Visual Basic programs that can perform various actions on selected image areas. Major functions are briefly described in the following table. We have also added comparison between the original documents, the scanned imaged (with scanner set lo line art) and VIRed output.
The following example were all scanned from the same document. Scanners can be set to process each of the cases individually. However, experienced scanner users will remember that it is next to impossible to do a quality scan of documents that contains, for example, a picture, a barcode and a signature on the same page. In that case the scanner settings are always a compromise and one or more area of the document is below quality standards.

Filters

Boolean filters

VIR has a set of predefined boolean operators like OR, AND, NOT and XOR.

Convolution filters

VIR users can define their own 3 X 3 convolution filters.

Histogram

VIR can be used to produce histograms of selected areas to help with image analysis.

VIRS2F

VIRS2F is a program developed by Dunord that allows the users to process forms with functions from the VIR toolkit. It needs a Dunord interface that has grayscale capacity, and maximum performance is obtained when using a TwinStream interface.
The program consists of two parts: script definition and document processing.
In the script definition, an analyst defines areas of the document (called zones) that have to be reprocessed from the gray image, the type of processing (barcode, picture etc.) and the parameters for the processing.
In document processing mode documents are scanned and the script is applied to each page, VIRS2F then saves a bi-tonal image that is a composite made from bi-tonal image from the scanner into which the defined zones have been replaced by the result of VIR processing.

VIR product description sheets.

Contact us if you need a paper copy of Vir product description sheet.