TITLE
    QuickTime VR: Processing Time To Create VR Movie
Article ID:
Created:
Modified: 		18162
7/13/95
5/26/00
TOPIC

    This article illustrates some typical steps you would take to create a QuickTime VR movie and the processing time involved.

DISCUSSION

    Apple has done some testing to help you get an idea of the performance and time needed for post production work on a VR project. Here are some typical times for the steps that you perform creating a VR movie.

    The estimated times for each command are from a Power Mac 8100 and a 33 MHz RC68040. The numbers indicate that native tools really benefit the Power Macintosh user.
    Processing Time Required On...
    VR Action
    Power Macintosh
    8100
    33MHz 68040
    w/FPU
    Notes
    Stitching 2 PICTS together
    2 minutes
    20 minutes
    		You could have as many as 18 stitches for one panorama, typically 12 for a 15-18mm lens.
    Dicing one panorama node
    2 minutes
    20 minutes
    		Time is per dice. One node might require 24 dices.
    Linking
    2 minutes
    20 minutes
    		To link nodes, time per link. You need to link twice to move back and forth between nodes.
    Compression per node
    2 minutes
    20 minutes


    Power Macintosh Example

    If you were stitching 12 PICTs for a single node, that computation could take 24 minutes for the entire node.

    If you then diced that node, it would probably take 48 minutes.

    For linking this node to another, 4 minutes.

    Compression of this node, 2 minutes.

    The grand total for post production time on one node is around 78 minutes. This doesn't include planning, shooting, or learning the tools.

    A QuickTime VR movie of rotation around a stationery object would require similar steps to those shown above, but may include many more shots. To do a complete rotation of an object (24 shots around the object at 0 degrees, 24 shots at +10 degrees, 24 shots at +20 degrees, and so on) the movie would consist of over 600 PICTs.

Document Information
Product Area: Apple Software
Category: QuickTime
Sub Category: QuickTime VR

Copyright © 2000 Apple Computer, Inc. All rights reserved.