I'm about to embark on an installation for a gallery that will allow
users to sit down at a Mac and browse through a database of about 900
full-screen (1024x768) images. That's about 2.25gb of uncompressed
bitmaps, or 270mb of compressed jpegs.
I'd like users to be able to "flip" through the images very rapidly, so
that by moving the mouse the images change at 20fps or faster. Like
flipping the pages of a paperback, you stop when something catches your
The images will be sequenced in many different ways: the user can flip
through in alphabetical order, in order by category, etc. So, Quicktime
isn't an solution I don't think.
I now need to spec the computer which will be in the gallery and
purchase one for development purposes. I need to decide how much RAM to
get and what video card. Does anyone have suggestions about the
following performance questions:
The images could be stored on the local disk either compressed or
uncompressed, whichever works better.
1) Is a 1.8ghz G5 fast enough to load and display 1024x768 images one
at a time from disk at 20fps?
2) If not, and all the images must be preloaded into RAM, then could
they be stored in RAM compressed (as jpeg data) or must they be stored
uncompressed in RAM (at 2.5mb apiece) in order to achieve 20fps?
And finally, this will be my first programming project of this nature,
my previous experience is for the web. I have plenty of time and am
trying to take it one piece at a time, but any pointers would be
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