Do both parts in groups of 3 people, and submit results
by noon on each deadline.
Part a: Calibration:
-
Groups
check out camera + tripod.
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Film
calibration pattern & short action scene with pattern in 2 “home” locations
(static camera).
-
Continue
filming while moving camera around (slow spin, walk, etc.) w/o pattern
-
Digitize footage using DVRaptor s/w and capture cards in computer lab
-
Extract 12+ interesting frames from calibration into stills (bmp or tif)
with numbered filename suffixes (e.g. frame_21.tif)
-
Pull
down a copy of the calibration_tool directory for local use
-
Follow
tutorial to calibrate internal camera parameters using stills (copy results
into a text file)
-
Follow
tutorial to calibrate camera extrinsics for image with pattern in home
positions; save translation and rotation matrices to same text file, and
submit it to /net/dvfx/DVFX/2004/PS1B/your_group_number/
-
See
PS2a: Camera Calibration Details
Part b: Compositing
This part of the assignment walks you through mapping the
results of Part 1 into the camera model for Maya. Your task is to follow the
directions, and then augment either your “home” images or a sequence shot from
those camera positions with CG elements of your choice. 75% of the task is the
technical aspect of mapping the real-world calibration to virtual cameras, and
25% is your creativity and attention to detail in adding the CG elements.
Since you have only one week for this part, focus on quality instead of
quantity – we’re happy to see one image done really well vs. a long sequence
where things float and the lighting is off. Of course, a well done sequence is
better still.
The “guide” for HW2 part II is
available here. Turn in your results in the same place as Part I (in
/net/dvfx/DVFX/2004/PS2B/your_group_number/)
Part c: Match-move experimentation
This part is NOT necessary to complete this assignment,
and is purely for experimentation purposes. Do this if you’re eager, if you
have time, or if you are thinking of having a moving camera in your final
project. MayaLive is a newly available plugin for Maya (Window->Plugins->Mayalive),
and has its own documentation (available from the help-menu). Its purpose is
to allow the “automatic” tracking of features in an image sequence where the
camera was moving. This then produces the equivalent of an extrinsic
calibration of the real camera, but does so for each frame of the sequence,
and without an explicit calibration pattern. The task: insert CG elements into
your video (just like Part II), while using footage shot with a moving camera.
Give us feedback on what you thought of MayaLive as a tool, and use this to
help you decide to use/not use moving cameras in your final project effect.
