Patent ID: 11966996
Assignee: COGNEX CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 16:
17. A method comprising:
identifying with a processor, in an acquired 3D image data set, a first subset of the acquired 3D image data set that defines z-dimension height information of one or more objects, and second subset of the acquired 3D image data set that defines a region of the acquired 3D image data set with orthogonal x-y dimensions that define an absence of data with respect to a first object of the one or more objects and a shadow that defines at least a portion of z-dimension height information of the first object; and
refining with the processor x-y dimensions of the one or more objects in the acquired 3D image data set based on; (i) the z-dimension height information defined by the positive 3D image data, (ii) predefined projection angles of illumination associated with the 3D camera assembly received by an image sensor of a 3D camera assembly, (iii) a contribution of the shadow to the x-y dimensions of the one or more objects, and (iv) a location in the acquired 3D image data set of the one or more objects in a field of view of the 3D camera assembly.