A surgery system comprises a camera obtaining camera images, an OCT system, a data memory storing geometry data of a surgical tool 133 and a controller configured to identify a first portion of the tool in the camera images by object recognition using the geometry data to determine, in the field of view, first locations where the tool is located and second locations aside of the tool to trigger the OCT system to perform depth scans at the first and second locations to identify a second portion 153 of the tool in the depth scans by object recognition using the geometry data and to generate a first image 154 representing a third portion 157 of the tool based on the geometry data and the depth scans.
