Zhengyu Gui

Xinnet interaction design & diagram - Upper left: primary user (head coach)'s intended interaction (use) with Xinnet, designed for both the front-end PDA and the back-end PC. Upper right: secondary user (assistant)'s intended interaction (use) with Xinnet, designed for both the front-end PDA and the back-end PC. Lower left: Xinnet's system components Lower right: Simplified view of interaction between user and Xinnet

Xinnet PDA prototype and interaction design - Upper left: home menu of Xinnet PDA. Upper right: setup page (customizable) of the PDA. Lower left: simulated tennis court shown on PDA where user charts the game. Lower right: detailed charting option for user when charting a stroke.

Xinnet PDA prototype and interaction design cont. - Upper: data analysis setup page, multiple analysis options are provided. Serves (4 possibilities) are selected in this case. Lower left: charted serves in plot diagram view. Differentiated by colors. Lower right: charted unforced errors in linear view.

Xinnet PC prototype and interaction design - Upper left: Xinnet PC's home menu. The "Import" function gathers recorded video from the digital camcorder. Upper right: imported video being played at a continuous mode (video not shown) Lower left: according to user criteria, the system can slice the video into footages and allow user to view them. In this case, "Serves" and "Forehands" are selected, so user can view relevant footages underneath them. Lower right: selected footages are displayed and user can choose which one(s) to view.

Xinnet PC prototype & interaction design cont. - Upper left: a description of the stroke on the side is also provided when viewing footage. Upper right: user can choose from three viewing options when viewing footages, . Lower left: when choosing "Classified View", user can view all footages of the same stroke (ex. "Serves"). Lower middle: when choosing "Timeline View", user can view footages of all strokes in a time period (a game). Lower right: when choosing "Comparing View", user can view two different types of stroke side by side.