nanoCAD 23


nanoCAD’s Raster Module extends the nanoCAD platform with tools that import, correct, and vectorize raster images.nanoCAD platform provides you with a full set of basic and advanced design tools for creating and editing 2D/3D objects. It offers multiple drawing and editing methods for most geometric elements. nanoCAD platform is the base on which you build a more powerful CAD system to your specifications.

Automatic vectorization

The Raster Module converts raster images into the vector objects by recognizing the following entities: points, lines, arcs, circles, hatches, texts, symbols, and outlines. At the end of the vectorization process, lines, circles, arcs, polylines, and arrowheads are recognized as object types.

Raster Features

Monochrome filtering

The Raster Module offers a rich variety of monochrome filters, such as smoothing, thinning and thickening, removing speckles, filling holes, generating contours, and inverting images. These not only improve image quality, but also reduce the size of raster files significantly.

Correcting image geometry

The Raster Module corrects geometric distortions in raster images, whether monochrome, grayscale, or color:

  • Resizing raster images
  • Scaling images and changing resolutions
  • Cropping
  • Deskewing
  • Mirroring along vertical or horizontal axes

Color reduction and separation

The Raster Module separates objects of different colors (such as roads and rivers) onto their own monochrome layers. The efficiency obtained in using this technique is higher than by making black-and-white scans of color images.

Color filtering

The Raster Module’s color filtering tools prepare images for subsequent operations. Color filtering improves the quality of images after operations that move entities in the image or change the resolution through scaling, alignment, rotation, calibration, and four-point correction. Tools in color filtering include the following:

  • Adaptive Blurt
  • Contour sharpness
  • Median


The Raster Module rasterizes and merges selected vector and raster data onto underlying raster images. The selection can consist of raster images or/and CAD objects

Raster image selections

The Raster Module selects the following portions of raster images and transfers them to new raster images on specified layers:

  • Areas of raster image
  • Multiple interconnected raster points
  • Raster lines segments of any shape defined by intersections with other raster lines or by endpoints