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Algolab Photo Vector 2.97.37 - User Guide and FAQ
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How to use Algolab Photo Vector
- Image aquisition
Normally the quality of vectorization is higher for higher resolution. So A4 drawings can be scanned with resolution 600 dpi. Large format drawings may require lower resolution to provide reasonable size of the raster file.
- Preprocessing
The use of preprocessing before vectorization is highly recommended in order to provide cleaner vector output. One of the main operations in preprocessing is to remove white holes. The simplest way to do this is to use function Raster=>Fill Small Holes. For details see the topic Editing Raster Images in this Help.
- Selection of Appropriate Settings
Settings can be selected from Recognition=>Settings dialog box. For some applications like architectural there is a named set of default settings with the same name. For other ones like Cutting, Engraving, Sign Making and other applications working primarily with curves the methods Curves and Smooth curves may be used to start from. These two methods differ one from another by the number of Smoothing iterations. A larger number provides smoother curves but with larger possible deviation from the original. By experimenting with the number of Smoothing iterations one can find appropriate values. See the topic Settings in this Help for details.
Depending on the choice of settings in Recognition Parameters dialog box curves can be represented by poly lines/arcs or by bezier. In Dxf output format bezier are represented by splines.
- Output
For Dxf and Txt ouput formats there are additional options that can be selected from File=>Output Options menu item.
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