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Access Type

WSU Access

Date of Award

January 2023

Degree Type

Thesis

Degree Name

M.S.

Department

Computer Science

First Advisor

Abhilash Pandya

Abstract

Augmented reality for surgical robots offers the surgeon a powerful user interface when planning and executing a procedure, however, it is challenging due to smaller cameras and lower tolerance for error. This thesis uses a dense neural network to reduce the total projection error by directly learning the mapping of a 3-dimensional point to a 2-dimensional image plane. A curated dataset was collected, labelled, and cleaned which was then used to train the network. The model was then evaluated on approximately 2000 data points. The results show a median error of 7 pixels when using a neural network as compared to an error of 50 pixels when using a more traditional approach involving camera calibration and robot kinematics. The pixel error was then converted to error in millimeters, resulting in an error of 1.4mm. This work is a step towards achieving sub-millimeter accuracy for AR in surgical robots.

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