Hi everyone,
I've recently taken the plunge into using Mac OS X and I've got some
questions about doing video capture and also how the ARToolkit
wrapper for it works.
I notice that by default the ARToolKit interface captures from the
camera in some kind of YUV format. I am using a firewire camera and
wanted to extract images out using 640x480 RGB format (which the IIDC
spec allows for) so I modified some #defines to use RGB format. It
supplies the images as RGB but when I ran the Shark profiling tool
(which BTW is the nicest profiling tool I've ever seen!) I noticed
that QuickTime is doing a YUV to RGB conversion.
I looked into this as well as one of my students (both of us aren't
Mac guru's though) and it seems like QuickTime is the only way to
talk to a firewire camera, and it will only talk to the camera in YUV
with a conversion to whatever format you want (with associated speed
penalties).
Is there anyway to talk directly to the firewire camera and retrieve
frames in the format I want (according to the IIDC standard)?
Is it possible to talk to a firewire camera without using QuickTime?
thanks,
Wayne
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Dr Wayne Piekarski - Researcher / Lecturer pho:
+61-8-8302-5070
fax:
+61-8-8302-3381
Assistant Director - Wearable Computer Lab mob:
+61-407-395-889
School of Computer and Information Science ema:
wayne@c ..............
University of South Australia www: http://
www.tinmith.net
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