Imaging system using markers
AssigneeImris Inc.
InventorsShawn Schaerer, Gordon Scarth, Steven Robbins
Life of this patent
Estimating the term…
Abstract
A system for detecting a position of an object such as a surgical tool in an image guidance system includes a camera system with a detection array for detecting visible light a processor arranged to analyze the output from the array. Each object to be detected carries a single marker with a pattern of contrasted areas of light and dark intersecting at a specific single feature point thereon. The pattern includes components arranged in an array around the specific location arranged such that the processor is able to detect an angle of rotation of the pattern around the location and which are different from other markers of the system such that the processor is able to distinguish each marker from the other markers.
Claims24
An imaging system comprising:
- a plurality of markers;
- a camera system for detecting visible light including at least one camera with a detector array for detecting light in a field of view and providing an output responsive thereto;
- a processor arranged to analyze the output;
- wherein each of the marker includes a pattern thereon which is detectable by the detector array to be analyzed by the processor;
- wherein the pattern includes first components arranged such that the processor is able to detect a specific location in three dimensions on the marker;
- and
- wherein the pattern on each of the markers includes second components different from other markers of the system arranged to provide an encoding such that the processor is able to distinguish each marker from the other markers.
An imaging system comprising:
- a plurality of markers;
- a camera system for detecting visible light including at least one camera with a detector array for detecting light in a field of view and providing an output responsive thereto;
- a processor arranged to analyze the output;
- wherein each of the marker includes a pattern thereon which is detectable by the detector array to be analyzed by the processor;
- wherein the pattern includes first components arranged such that the processor is able to detect a specific location in three dimensions on the marker;
- and
- wherein the pattern includes second components arranged around the specific location arranged such that the processor is able to detect an angle of rotation of the pattern around the specific location.
An imaging system comprising:
- a plurality of markers;
- a camera system for detecting visible light including at least one camera with a detector array for detecting light in a field of view and providing an output responsive thereto;
- a processor arranged to analyze the output;
- wherein each of the marker includes a pattern thereon which is detectable by the detector array to be analyzed by the processor;
- and
- wherein the processor is arranged to detect an area of occlusion by a user of a selected one of the markers in the image and to use the occlusion as an input for process control.
Dependencies are inferred from the claim text.