CPSC 689/602--Spring 1997
Computer-Supported Cooperative Work


Paper Report

Title : Videoplace
Author : Myron W. Krueger
Citation : Artificial Reality II
Reprinted in :Groupware and Computer Supported Cooperative Work by Ronald M. Baecker


This paper talks about Videoplace and its origin. The author Krueger describes one of the incidences that occured during METAPLAY. The images of the authors hand and the image of another persons hand were put into a composite image and they discussed the errors of the images which would have been on different screens. Eventhough the people were in different places, the fact that their images overlapped, gave an uncomfortable feeling to the authors friend.

This was the same concept used in Videoplace. The images of two different people were put into a composite image and each person could see the image. When the images overlapped, the people felt as if actual physical contact was made. This made them uncomfortable as in ordinary circumstances about physical touch.

Artificial Reality juxtaposes the image of a person and graphical objects in the same screen. The computer in this case would have complete control over the superimposition of the image and the object. It can also tell when images and objects make contact, and can coordinate the movement of a graphic object with a participants actions.

Some of the interactions between the image and the graphical object would be lifting or pushing an object, or throwing an object. One person can lift anothers image. He can press down on the image of another persons head and make that persons image shrink under pressure.

While a person is trying to lift a virtual object, he can be made to experience some sort of pressure at the neccessary points so that a real kind of environment of lifting an object can be simulated. This is the basic concept that is used in telerobotics. The sensors that are put on the person sense the movement and the robot is made to simulate the persons movement. On the persons side he may be attached to some sensors and the activity that he is supposed to do can be simulated on the screen.


Report prepared by :Shiva Bhanujan, Email :shivab@cs.tamu.edu
Discussion Date :04/2/97            Report date :04/2/97