While in-app plugins are convenient, seasoned Rhino professionals often achieve the cleanest geometry by preprocessing images in dedicated vector graphics software before importing them. The Adobe Illustrator / Inkscape Route
Instead of manually drawing curves over a background image (an exhausting process known as "tracing"), Vectorize automatically detects the high-contrast edges in a raster image (JPG, PNG, BMP) and generates editable Rhino curves. Why Use Vectorize in Rhino 7 or 8?
Converting bitmap images into clean, editable vector geometry is a core challenge for designers, architects, and fabricators. While Rhino is a powerhouse for precision NURBS and mesh modeling, handling raster graphics often requires the assistance of external tools or specialized plugins.
In conclusion, the Vectorize plugin in Rhino 2021 is a powerful tool that offers designers and architects a quick, accurate, and efficient way to convert raster images into editable vector curves. With its advanced features, adjustable settings, and seamless integration with Rhino, Vectorize is a must-have plugin for anyone working with raster graphics. vectorize plugin rhino 2021
Import the image you want to vectorize into the viewport (using the Picture command). Position it in the correct plane (usually Top or Front). 2. Run the Command Type Vectorize in the command line. 3. Select the Image Click on the Picture object (image) you want to trace. 4. Adjust Parameters A dialog box will appear. You can adjust the following:
Use the InterpCrv (Interpolate Points Curve) or Polyline commands to manually trace over the artwork. Heightfield From Image (For 3D Vectorization)
Adjust the slider to determine the cutoff point between black and white pixels. Hobbyists | Engineers
Select a grayscale image (where white represents the highest points and black represents the lowest).
Spline is a dedicated raster-to-vector plugin designed to run directly from the Rhino command line.
Determines how sharply the generated curves will turn at corners. Higher values create crisper angles; lower values create smoother, organic shapes. BMP) | File
Use images with a high DPI (300+) to prevent jagged, pixelated curves.
| Feature | | RaVe (Commercial) | | :--- | :--- | :--- | | Cost | Free & Open Source | Paid Commercial (Licensing required) | | Best For | Architects, Designers, Hobbyists | Engineers, Manufacturers, Professionals | | Color Support | Converts to Black/White only (requires Threshold) | Full color processing and advanced mapping | | Input Sources | File only (PNG, JPG, BMP) | File, Clipboard, Scanner, Screenshot | | Editing Tools | Basic curve generation | Advanced curve management, offset, middle-curve extraction | | Workflow Speed | Very fast for line-drawing vectorization | Optimized for precision and downstream machining |
Eliminates the constant import/export cycle between Rhino and 2D vector editors.
Whether you are running Rhino 7 (released around 2021) or a more recent version, understanding how to effectively vectorize images directly within your viewport can dramatically speed up your CAD workflow. The Core Challenge: Raster vs. Vector in Rhino
You have a clean, high-contrast silhouette, logo, or simple drawing and want immediate vector results without installing software.