Improving Accuracy andEfficiency of Hand Gestureson Multi-Touch Devices

摘要

Geometric transformation gestures such as rotation, scaling and draggingare extremely common. There are multiple variants of designing and implementingthese gestures. Variants include slightly modifying the gestureinput (e.g. different original placement or tracing of fingers) or the resultingaction (e.g. scale factor, retention of scale centre or rotation degree). Therehas not been a significant amount of research assessing the best design ofgeometric transformation gestures across multiple multi-touch devices.We describe our research project that looks at variants of standardgeometric transformation hand gestures. We hypothesise that these variantsare superior to standard geometric transformation gestures (in terms ofsupporting more precise transformations and faster completion times) andare as easy to initiate and maintain as the standard gestures. We also discussour experiences in implementing these variants and describe and presentuser experiments we have completed in order to test our hypotheses.The results show that only some of our variants are more precise andsupport faster transformation completion and that only some of theseresults are mirrored between devices. Furthermore, only some of ourvariants are as easy to initiate and maintain as the standard gestures.