... E-Chalk lecture with instructor video, thereare two areas of the screen competing for the viewer’s eye:the video window showing the instructor, and the board orslides window. Several practical ... “Videowhiteboard: video shad-ows to support remote collaboration,” in Proceedings of theSIGCHI Conference on Human Factors in Computing SystemsHindawi Publishing CorporationEURASIP Journal on Image and Video ... and Video Processing(CHI ’91), pp. 315–322, ACM Press, New Orleans, La, USA,April-May 1991.[21] N. Roussel, “Exploring new uses of video with videospace,” in Proceedings of the 8th IFIP International...