Computer Exercises

Students should run the program xv on the /u1/data/images/4.* files using fox.cs.vt.edu. Also, do ls -l 4.* in that directory to see the file sizes. Note that file 4.60.jpg was produced by command
tifftopnm 4.tif | cjpeg -Q 60 > 4.60.jpg
run in that directory. Based on the file sizes and your assessment of quality, which of the versions of this image would you recommend putting out on WWW? Please explain briefly.

Students should run the program mpeg_play on the /home/video/abdulla/*.mpg files using video.cs.vt.edu. Send to the instructor the name of the X terminal used, and the average frames per second for each of 5 files. (Hint: you may want to pick the smallest ones, since that will take less time.) Please explain why these values are not 30. Also, view some movies about Hawaii and tell the instructor briefly what several of these MPEG movies are about.

Please be sure to look at the WWW course notes for this unit and if your computer supports it, experiment with some of the audio and video files. Tell the instructor the 3 pages you visited that you found most interesting, and explain briefly why.

For additional information about Multimedia, see also the KMS frames.


fox@cs.vt.edu
Tue Nov 22 01:33:56 EST 1994