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A New Approach for Parkinson's Disease Imaging Diagnosis Using Digitized Spiral Drawing
Published in Ashish Mishra, G. Suseendran, Trung-Nghia Phung, Soft Computing Applications and Techniques in Healthcare, 2020
Hence, previously, PD was assessed by traditional noninvasive methods such as handwriting tests and spiral drawing pen and paper tests. Collecting, preserving the paper and analysing these drawings is purely based on human expertise, which is a time-intensive, less accurate, biased method. With the advancement of IT, it is easier to collect the drawing samples using digitizing (digital) tablets, which are already used in biomedical research. The use of graphics tablets enables researchers to develop various image analysis and processing tools for obtaining different kinds of information that cannot be easily performed with pen and paper drawings.
Input Devices
Published in Céline McKeown, Office Ergonomics and Human Factors, 2018
When graphics tablets and pens are used, there is a direct relationship between the direction, speed, and distance of movement on the tablet and the cursor on the screen. However, as the user has to move between two different ways of using the hand if swapping between keyboard and tablet, it may take some time to develop an appropriate skill base. The tablet and pen are most effective when used for pointing, selecting, dragging, and drawing. The contact surface of the tablet should be flat and smooth and devoid of reflection or glare.
Computer Technology Primer
Published in Michael M. A. Mirabito, Barbara L. Morgenstern, Mitchell Kapor, The New Communications Technologies, 2004
Michael M. A. Mirabito, Barbara L. Morgenstern, Mitchell Kapor
A more effective device for this task is the graphics tablet, a drawing pad typically interfaced with an electronic pen. You can literally sketch a picture in freehand, among other options. Some configurations provide very fine degrees of control when combined with specific software.
The Influence of Clutching Mechanism on Object Manipulation Tasks in Virtual Environments
Published in International Journal of Human–Computer Interaction, 2023
Zihan Gao, Xin Lyu, Anqi Ge, Huiqiang Wang
One important descriptive model for designing interactive technique is Buxton’s three-state model of graphical input (Buxton, 1990). This model provides a simple expression of how computer pointing devices operate through state transitions, which serves as a vocabulary to understand and explore the relationship between pointing devices and the interaction techniques they afford. Figure 1 illustrates an example of state transitions in a graphics tablet with a stylus, showcasing three states: State 0 (Out of Range), State 1 (Tracking), and State 2 (Dragging).