Introduction
Related work
References | Year | Interaction | Tracking | Findings | Issues |
---|---|---|---|---|---|
Ursic et al. [9] | 1997 | Hand-held laser pointer | – | Reduced risk of self-contamination, frustration and inaccuracy compared to conventional pointing | No hands-free use possible |
Jayaraman et al. [10] | 2009 | Head pointing | Optical Tracking Camera | Improved instruction efficiency (less task completion time) compared to conventional pointing | Use of tracking camera limits working area |
Prescher et al. [11] | 2014 | Laparoscopic camera | – | Improved instruction efficiency (less task completion time) compared to conventional pointing | Laparoscopic camera position cannot be changed without moving the pointer |
Chetwood et al. [12] | 2012 | Gaze position | Eye Tracking Camera | Improved instruction efficiency (less task completion time, reduced error rates) compared to conventional pointing | Users cannot change their gaze focus without moving the pointer |
Ward et al. [13] | 2012 | Head pointing | Optical Tracking Camera, Inertial Tracking | Improved interaction performance (less total pointer movement, smoother trajectory) compared to commercial pointer system | Use of tracking camera limits working area |
Trejos et al. [14] | 2015 | Head pointing | Optical Tracking Camera, Inertial Tracking | Less hand pointing required, improved instruction efficiency (subjective questionnaires) compared to conventional pointing | Use of tracking camera limits working area |
2018 | Hand gestures | Depth Camera | Improved economy of instrument movement, improved gaze behavior (more concentrated and more clustered fixations) | No hands-free use possible |
HoloPointer
Applicability and feasibility for laparoscopic training
Participants
Apparatus
Tasks
Measures and variables
Procedure
Results
Variable | V | p | Significance | r | Effect size |
---|---|---|---|---|---|
Summary score | 27 | 0.031 | * | 0.81 | Large |
Procedure time | 21 | 0.297 | 0.39 | Medium | |
Errors | 26 | 0.047 | * | 0.75 | Large |
Economy of movement | 26 | 0.047 | * | 0.75 | Large |
ID | Question | Mean score |
---|---|---|
Q1 | The AR glasses were comfortable to wear. | 3.5 ± 0.9 |
Q2 | My field of view was not obstructed by the HMD. | 2.5 ± 0.5 |
Q3 | The darkening effect caused by the tinted lenses was not disturbing. | 2.2 ± 1.1 |
Q4 | The support of the HoloPointer was very helpful for the identification of anatomical structures and for the surgical preparation. | 2.3 ± 0.9 |
Q5 | I followed the instructions given by the HoloPointer. | 1.9 ± 0.5 |