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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

Second Advisor

Marco Brocanelli

Abstract

Positioning the camera during laparoscopic surgery is an essential but often challenging task. The operator will frequently settle for a less than optimal viewpoint due to the mental demand of performing surgery while manually positioning the endoscope or instructing another person to do it. The currently developed autonomous systems are limited in their behaviours or still require some form of operator input. To address this, a modular deep learning based system for autonomous camera control has been developed. Multiple supervised learning models have been trained on 1M+ datapoints from both autonomous and user-operated cameras. The models have an accuracy of 98.6% within 0.001m, although viewpoint optimality is difficult to objectively evaluate. The average response time for the models is 0.017s without considering ROS network latency, and 0.029s including ROS network latency. Additionally, a framework for inverse reinforcement learning (IRL) for autonomous camera control is proposed with a proof of concept.

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