This document describes a presentation support system that allows users to control PowerPoint slides using natural body gestures detected by Kinect devices. The system defines several gestures like swiping left or right to switch slides. It uses Kinect to detect the user's posture and gestures and sends key commands to PowerPoint to advance or go back slides. The research aims to enable more engaging presentations by freeing presenters' hands so they can gesture vividly while controlling the presentation. Future work will focus on improving gesture recognition accuracy and adding more presentation functions.

1. A Presentation Support System
Controlled by User's Body
Gestures using Kinect Devices
S1180195
Takamasa Hirasawa
University of Aizu,
Computer Science
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2. Abstract
Our study is to develop a support system that PPT
slides can be controlled by the natural operation
easily, through body movement, such as postures
and gestures. We define several gestures to
operate the PPT, use Kinect to detect the gestures,
and control the PPT slides based on the detected
gestures and corresponding definition.
Compared with PPT operations by mouse,
keyboard, and pointer, presentation can be smarter
and smoother with the support tool of the study,
since vivid presentation using both hands is
possible.

3. Outline
• Background
 Motivation and Problem Statement
 Methods
• Results
• Summary
• Future Work
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4. Background
~Motivation and Problem Statement~
• Smartness Presentation
 Go to the front of the PC and press buttons
for slide operations
 Using one hand on a device for manipulating
the PPT, and at the same time use another
hand to show gestures for vivid and visual
presentation.
A presentation support tool can provide a
convenient means for presenters to make
presentation in such a way.
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5. Methods ①
Display
Screen
Projector
＼Action！／
Kinect
Presenter
PC and Monitor
App
②
Kinect for
windows SDK
①
Displaying monitor
and presenter can
see own actions.
①・②Sending Gesture and Posture
④
③
PPT
③Send Key Information
④Display the PPT’s action
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6. Methods ②
～Gestures and Postures～
1. We defined 4 gestures.
2. Table of gestures and postures
Gestures and Postures
PPT’s actions
Right hand swiped left
Sending slides
Left hand swiped right
Backing slides
Raising the right hand
Both hands jointed
Switching between mouse
operation mode and gesture
mode
Blacking PPT
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7. Methods ③
~Gestures and Postures~
Vector3
Skeleton
Posture
Swiping Gesture
SwipeGestureDetector
SwipeLeftGestureDetector
AlgorithmicPostureDetector
MainWindow
SendKey
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8. Results
The system realized the
function of sending back of the
slide, although the accuracy is
little lower than controlling by
mouse.
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9. Summary
The research is important because it
enables the presenter hand free during
a presentation. It is also possible to
realize a variety of functions by adding
the other operation.

10. Future Work
1.Precision that function of sending and
backing slides.
2.Adding information of Z coordinate when
Swiping Gesture recognize.
3.Adding other function for presentations
are more wealthily.

11. Thank you for
your attention!!
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