Usage and Conversion
- Drawing Process: Unlike the click-by-click method of the Polygon Tool, the Freeform Tool allows users to draw shapes freely as if using a pen.
- Auto-Conversion: Once the stroke is completed, the platform utilizes a path simplification algorithm to automatically convert the freehand drawing into a structured Polygon. This ensures that the final annotation remains editable and compatible with standard segmentation formats.
- Finalizing: Releasing the mouse button or closing the loop automatically triggers the conversion process.
Interactive Toolbar: Drawing Modes
The Freeform Tool shares the same operational flexibility as the Polygon Tool. Through the Interactive Toolbar, users can select from four distinct modes:- Overwrite: The new shape is drawn independently.
- Subtract: The freehand stroke cuts out a section from an existing polygon.
- Auto Subtract: The platform automatically trims the freeform shape so it does not overlap with existing boundaries.
- Union: The new freeform shape is merged into a single logical entity with an existing polygon.
Customization: Point Density
The precision of the freeform-to-polygon conversion can be adjusted to match the complexity of the object:- Point Frequency: Users can control how many vertices are generated during the conversion. A higher density captures more detail, while a lower density creates a simpler, more manageable polygon.
- Configuration: These settings are located under the Freeform Settings section within the Canvas Settings menu. Adjusting the frequency allows for a perfect balance between speed and geometric accuracy.