Reading
- GestureWrist and GesturePad: Unobtrusive Wearable Interaction Devices
- Rekimoto
Outline
- 1. Introduction
- 2. Related work
- 3. Technological background
- 3.1. Capacitance sensing
- 3.2. On-body networking
- 3.1. Capacitance sensing
- 4. GestureWrist A wristband-type input device
- 4.1. Hand-gesture recognition
- 4.2. Forearm movement measurement
- 4.3. Tactile feedback
- 4.4. Combining two sensor inputs
- 4.1. Hand-gesture recognition
- 5. GesturePad: A sensor module for interactive clothing
- 5.1. Sensor configurations
- 5.2. Interaction areas on clothing
- 5.3. Clothes as communication surfaces
- 5.1. Sensor configurations
- 6. Discussion and future research
- 6.1. Combination with output devices
- 6.2. Combination with on-body networks
- 6.3. Sensing other parts of the body
- 6.1. Combination with output devices
Notes
- Introduction
- Important wearable computing feature #1: Supporting hands-free operations or allowing quick changes between normal and operation modes
- Some input devices used with wearable computers need to be held during operation
- With one hand already occupied, performing two-handed tasks becomes difficult
- Glove-type input devices hinder performing real-world tasks
- Some input devices used with wearable computers need to be held during operation
- Important wearable computing feature #2: Social acceptance
- Input devices should be as natural and unnoticeable as possible for use in various social settings
- Many current wearable input devices look unusual or too "hi-tech"
- Often troublesome to wear long-term in everyday situations
- Often troublesome to wear long-term in everyday situations
- Traditional wearable accessories (e.g., wristwatches, eyeglasses, jewelry, clothes) part of daily life and designed for comfort with long-time use
- Input devices should be as natural and unnoticeable as possible for use in various social settings
- "Unobtrusiveness"
- Unobtrusiveness of input devices essential for being used in everyday situations
- One possible way is to embed input sensors to conventional wearable items
- Unobtrusiveness of input devices essential for being used in everyday situations
- Paper's two example devices:
- GestureWrite
- Wristwatch-type input device that recognizes human hand gestures by capacitively measuring changes in wrist type
- Combined with acceleration sensor mounted to wristband, can be used as command-input device
- Wristwatch-type input device that recognizes human hand gestures by capacitively measuring changes in wrist type
- GesturePad
- Layer of sensor electrodes transforms conventional clothes into interaction devices (i.e., "interactive clothing")
- Can be attached to area of clothing such as sleeve or lapel
- On capacitive sensing, can detect and read finger motions applied on outside of clothing fabric
- Layer of sensor electrodes transforms conventional clothes into interaction devices (i.e., "interactive clothing")
- Technological background
- Capacitance sensing
- Definition:
- A technique for measuring distances of nearby conductive objects
- Measures the capacitance between the sensor and the object and uses a transmitter and a receiver electrode
- A technique for measuring distances of nearby conductive objects
- Used for measuring:
- the arm shape by placing both the transmitter and receiver electrodes on a wristband
- finger positions by attaching electrodes on the inside of clothes
- the arm shape by placing both the transmitter and receiver electrodes on a wristband
- On-body networking
- Based on capacitive sensing, a technique that transmits data through the human body
- Wearable devices can:
- communicate with each other
- automatically authenticate digital devices that are touched
- communicate with each other
- Technique used to distinguish wearer from other people while interacting with GesturePad
- Based on capacitive sensing, a technique that transmits data through the human body
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