A Mixed Reality System for Investigating Expert Characteristics on Recall of Situation Including Self-Motion  

出　　处：《Computer Technology and Application》2012年第4期283-288,共6页计算机技术与应用（英文版）

摘　　要：To study recall accuracy of the offensive and defensive situations including movements of elite-athlete/novice oneself, a novel experimental system was developed where defensive actions were performed by the subject with a CG （Computer Graphics） player who presented predetermined offensive actions. Both the CG player＇s movements and subject＇s movements were reproduced by a video using mixed reality technology for recall examination. This system was also designed to rearrange the natural sequence of image frames resulting in a reproducible video in which the time relation of offense and defense was falsified. Displacement of timing in the false video was twofold; delayed from the truth or advanced from the truth. Using this two-video, true/false imagery method, the subject was asked to select the true video by recall; thus it became possible to examine the recall accuracy quantitatively by controlling the timing displacement. Results of the experiment using this system revealed that karate expert possessed a skill to recognize the time relation between the opponent＇s movement and one＇s own movement perceptually that was more developed than that of the novice. It was further identified that the expert as well as the novice recognized delayed displacement more accurately than they could recognize advanced displacement.

关 键 词：Mixed reality recall paradigm perceptual cognitive skill computer graphics displacement of timing. 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TQ051.72[自动化与计算机技术—控制科学与工程]