Campanile Movie Trivia
- None of the trees in the campus environment were explicitly
modeled; instead, their texture information was projected flat onto
the ground. Although there originally were plans to model the trees,
renderings produced before any tree modeling was done were deemed
sufficiently convincing for use in the demo and in the film.
- Copies of the original 1913 John Galen Howard plans for the
Campanile were used by architects Dorrice Pyle and Russel Bayba to
build the miniature of the Campanile. The minature was detailed by
hand to level of individual bricks.
- The computer model of the Campanile was built relying only on
photogrammetric measurements. Informal comparisons were made between
the recovered measurements and the measurements on the plans to judge
the accuracy of the algorithms. The hardest measurement to recover
accurately from the available photographs was the height of the
tower's main shaft, which is somewhat smaller at the top than at the
bottom. The gentle tapering of the shaft - commonly used by
architects to exaggerate the perceived height of a building - turned
out to make photogrammetric information less definitive as well. The
tower's bricks also decrease in size toward the top of tower.
- No attempt was made to be consistent with the times shown on the
Campanile clock. As a result, the times do not match between the
virtual, real, and minature versions. Furthermore, as an artifact of
the view-dependent texture-mapping method, the clock fades between
different times during the synthetic fly-around.
- A design requirement for the renderer was for all of the
photographic data to fit within the 16MB of texture memory available
on the RealityEngine2. To meet this requirement with the highest
resolution imagery, the four-fold symmtery of the tower was exploited
to use each tower photograph as if it were four photographs taken at
ninety degree rotations to each other. To do this convincingly it was
necessary to factor out the original shading variations between the
different sides of the tower and to synthetically re-adjust the
illumination of tower during rendering.
- Except for the analog photographs, the Campanile movie was
produced using all-digital equipment. A Sony VX1000 mini-DV digital
video camcorder was used for shooting the live action and re-recording
the computer processed imagery. The DPS Spark Firewire card necessary
for the digital video editing became commercially available three
weeks before the deadline for the final version of the film.
- An early version of the storyboard included a final scene in
which the Campanile (first the model miniature, then the real thing)
falls over and crushes the person.
- The movie was scripted to occur in cloudy conditions in part to
make it easier to acquire consistent photographic data. Nonetheless,
various linear remappings were required to adjust the photographs of
the Campanile taken on different days to match with each other and
with the environment.
- Special access to the Campanile was granted to make this project
happen. The upper deck of Berkeley's Campanile is accessed through a
very narrow staircase that goes through one of the corner supports of
the observation level. The lantern is accessed by a series of four
unlit staircases and ladders through the pyramid of the Campanile.
Less than three feet wide, strewn with cobwebs, and towering over the
vast expanse of Berkeley, the journey to the top has something to
offer anyone with nichtophobia, claustrophobia, agoraphobia,
acrophobia, or arachniphobia.
Back to the Campanile Movie Page
Paul E. Debevec / firstname.lastname@example.org