5. Conclusion

The results of this study provide guidelines for building tools for browsing video data. We will conclude by summarizing the main findings from this research that may be used as a starting point either for future research or as an outline for system designers. For object recognition, it is possible to allow simultaneous viewing of up to three key frame video displays. However, for comprehension, two appears to be the maximum allowable. Evaluations show dissatisfaction with the speed of videos when they are viewed simultaneously. On the other hand, users seem to find that this display saves time when scanning for video clips.

5.1 Suggestions for future researchers

Further work in this area is necessary to provide data on a number of related topics. A few of these questions are summarized below.

1. Do certain types of videos require specific types of surrogates to represent them?
2. Are key frame surrogates best suited to object recognition and comprehension tasks or are there others in which this type of representation provides the most information to users.
3. Do factors such as age, sex or number of hours watching television affect users performance with the various methods of representing video data? What about users who regularly view multiple window televisions where two shows play at once? Does practice increase performance?
4. What are the effects of combining both the number and speed (Ding, 1996) of these video surrogate displays?

Continue
Return to the Comprehension and Object Recognition Capabilities for Presentations of Simultaneous Video Key Frame Surrogates