Methods and systems for updating an existing landmark registration

An image-guided surgical navigation system, the system comprising:

• a processor;
• an imaging device coupled to the processor;
• and
• a memory coupled to the processor and storing processor-readable instructions that, when executed, cause the processor to:
• capture a planar view image of a region of interest, the planar view image being a two-dimensional image of one or more landmark features of anatomy being imaged by the imaging device;
• generate a depth map from the planar view image captured by a stereoscopic imaging device, wherein generating the depth map includes determining depth data using identified visual characteristics of the one or more landmark features, wherein the one or more landmark features includes an identifiable portion of the anatomy in the planar view image, wherein generating the depth map includes generating the depth map based on touch point identification of the one or more landmark features;
• based on the depth map, identify a current location of the one or more landmark features in a three-dimensional coordinate space;
• and
• transform an existing landmark registration to the current location of the one or more landmark features in the three-dimensional coordinate space.

A non-transitory computer-readable storage medium comprising processor-executable instructions which, when executed, configure a processor to:

• capture a planar view image of a region of interest, the planar view image being a two-dimensional image of the one or more landmark features of anatomy being imaged by an image-guided surgical navigation system;
• generate a depth map from the planar view image captured by a stereoscopic imaging device, wherein to generate the depth map includes determining depth data using identified visual characteristics of the one or more landmark features, wherein the one or more landmark features includes an identifiable portion of the anatomy in the planar view image, wherein to generate the depth map includes generating the depth map based on touch point identification of the one or more landmark features;
• based on the depth map, identify a current location of the one or more landmark features in a three-dimensional coordinate space;
• and
• transform an existing landmark registration to the current location of the one or more landmark features in a three-dimensional coordinate space.