A Study On The Usability Of Target Attributes In Sense Of Body Interaction

Human-Computer Interaction in touch technology can be divided into two categories, one is the direct touch technology, user directly target finger on the touch screen to select click and other operations.Another one is non-contact touch technology, typical application is somatosensory interaction. The somatosensory device enables the user to interact with the target to achieve a certain distance in operation,and the process can be completed only by the man-machine interaction with the body’s own attributes (body movement, sound, etc.). In case this is not in direct contact with the target, the size of the target and the distance between diffirent targets will have a huge impact on the success rate of target selection. This paper studies through the use of Microsoft’s Kinect somatosensory equipment to its identified target properties. If the target is relatively small, it will not reach the somatosensory precision device’s recognize. If the target is too large, it is a waste of space on the GUI, how high efficiency, choose a high accuracy to achieve targets is the main contents of this paper. The main achievement is as follows:First, we have to choose a certain size range of target by the target selectionpilot experiments, analysis of target selection time, draw a Kinect recognition performance to meet the target size.The size of the experimental data quality objectives should be consistent with normal distribution.Second, the experiments verified the target performance for the further study of different sizes, based on the pilot experiments, the size of target will be further refined, and click on the different target sizes to assess differences in effect, with the best interactions performance target size is150pixel.Third, through previous work we have come to the ideal target size, in order to verify whether the target performance is universal, we have designed a target shape comparison experiments, the performance of round and square target goals were comparing differences, the user does not come to affect the efficiency of the recognition of the object selection target shape.Fourth, in order to verify that still has excellent performance during the continuous click optimum target size, we designed a random target selection experiments.Through the experiments we found that the target width and the random distance of the targethave effect on the success rate, and the range of thetarget distancewhich have better performance is400～600pixel, through experiments we also found that human behavior of itself will increase the difficulty of the target selection. This study is basic research somatosensory interactive technology, which has obvious significance of target design in somatosensory interactive interface design.