Pen pressure, tilt, and azimuth in pen-based interfaces : human capability and utilization
Yizhong Xin · Institutional Repositories DataBase (IRDB) · 2010
Pen pressure, tilt, and azimuth in pen-based interfaces: human capability and utilization Yizhong XINPen is favoured in many user environments due to portability, outdoor accessibility, short learning curve, and ease of manipulation.Pen interfaces have been implemented in several ways such as pointing input, handwriting/gesture recognition, and direct manipulation.Particularly, for individuals with physical disabilities or unfamiliar with computers, the pen interface is a more natural approach.However, compared with that of other input devices such as keyboards and mice, the input throughput capacity of pens is less because the pen input channel is restricted to x-y coordinate data.Inherent pen input modalities (pressure, tilt, and azimuth) provide possible ways to enhance the input throughput.However, rational use of these inherent pen input modalities is still an open question because little is known to rationally, naturally, and comfortably utilize pen input modalities according to human characteristics.Therefore, there is an urgent need to systematically investigate human ability to control pen pressure, tilt and azimuth and interrelated design factors that influence human performance.In this light, this paper quantitatively investigates the pen input modalities using empirical methodology.This paper firstly investigates pen input modality natural use profiles both in static -i