Optical Tool Positioning Using Indicia for Interference-Free Tracking

The patent replaces radio-based positioning with an optical imaging system. Instead of using radio transmitters and receivers that are susceptible to electromagnetic interference, the system uses cameras to capture images of visual indicia (patterns) on the workpiece and tool. This optical substitution eliminates radio interference issues while providing both position and orientation information through image analysis.

The patent employs visual indicia with distinct color patterns or reflective properties that can be easily detected by imaging devices. These indicia serve as visual markers that the camera system can identify and track, enabling reliable position and orientation determination without relying on radio frequency signals that are prone to interference.

The patent transitions from one-dimensional radio signal tracking to two-dimensional optical image analysis. By capturing images of visual indicia patterns, the system simultaneously extracts both position (x, y coordinates) and orientation (angular information from pattern geometry) from a single imaging measurement, eliminating the need for multiple transmitters while providing complete spatial information.

The patent uses visual copies or representations of the tool and workpiece through imaging. The camera captures optical images of the indicia attached to these objects, creating visual copies that contain both positional and orientational information. This allows the system to determine orientation without adding physical complexity like multiple transmitters to the actual objects.