A person moving through the world must be able to detect and identify moving objects to avoid collisions. In previous studies we examined how well people can detect a moving object within a radial optic flow field simulating observer motion. In this study, we examined the problem of moving object identification by a moving observer. Observers viewed a radial flow field, consistent with observer motion in a straight line. In every trial a target circle moved at an angular deviation from this radial pattern. Observers used the cursor to select the circle that they believed moved differently from the pattern.
The demos consist of about 10 trials each and originally were shown with 16 dots on a fuller screen. The dot size, number of dots used (9 in these demos) and flow field size have been scaled down for viewing on the web. |
