Methods and systems for updating an existing landmark registration

Methods and image-guided surgical navigation systems for updating an existing landmark registration of one or more landmark features in a common coordinate space are provided. The image-guided surgical navigation system includes a processor, an imaging device coupled to the processor, and a memory coupled to the processor. The image-guided surgical navigation system may be configured to capture a planar image of a region of interest, where the planar view image includes illustration of the one or more landmark features; generate a depth map from the planar view image; based on the depth map, identify a current location of the one or more landmark features in the common coordinate space; and transform the existing landmark registration to the current location of the one or more landmark features in the common coordinate space.