General v.s. Specific Guidance Design

In the guidance design of GazeBeacon, we proposed a method could be directly ap-plied to general usage cases. However, we noticed that the behavior of the users on various gesture elements was quite different from each other in the study. For example, the proper value of the waiting threshold of the focus point on squares and rectangles are not the same as the one on triangles, since acute angles need less emphasize. And

CHAPTER 5. CONCLUSION AND FUTURE WORK 39

for horizontal straight lines, the users tends to move a little bit higher than the intended gestures.

On the contrary, The offsets within one individual user are quite similar, they were in-clined to repeat the offset mistakes previously made by themselves. Therefore, if we want to extend the guiding ability based on the general design, we can further discuss some specifications. On gesture elements, we might adjust the trajectory of the guidance based on the mentioned findings, make it not fully matched to the gesture template. On individ-ual users, we can dynamically tune the guidance by neutralizing the offset to gradindivid-ually redirect the users back to the intended one.

Appendix A

Mean Paths of the Gesture Input

Figure A.1: The mean paths of the gestures input with different guiding techniques in line section.

APPENDIX A. MEAN PATHS OF THE GESTURE INPUT 41

Figure A.2: The mean paths of the gestures input with different guiding techniques in corner section.

APPENDIX A. MEAN PATHS OF THE GESTURE INPUT 42

Figure A.3: The mean paths of the gestures input with different guiding techniques in arc section.

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