The motion capture services were provided by Acclaim Entertainment, the computer game company that had the video game rights for the Batman property and that had earlier provided the motion capture services for Batman Forever. PDI was again contracted to create these stunts using motion capture. Batman and Robin required much more elaborate digital stunts, many of them happening in the air. PDI had provided a CG Batman stuntman for Batman Forever, using optical motion capture as a means to collect the performance of a gymnast performing on a stage doing flips and other movements on rings. It is possible to avoid this if you can write software to recalculate the data for a predetermined base position based on your character setup.Īlberto Menache, in Understanding Motion Capture for Computer Animation (Second Edition), 2011 Batman and Robin In Chapter 3, I said that you should not set up your character unless you have already imported a base position file into your animation software. It also means that if the base position is changed, all the data in the file must be recomputed. That means that if all translations and rotations are zeroed out, the skeleton will return to this pose. htr file are relative to this base position. htr files, only one character setup is necessary. The base position is also the initial skeleton of the character in the animation software, so by using a common one for all.
This frame will become the common base position and will be embedded into the body of all. A frame in that file is selected to represent the closest pose to the digital character model.
During the motion capture session, a file with the neutral pose is captured. The base position is the initial pose that I talked about in Chapter 3. Figure 4.10 shows a graphic representation of the hierarchy.
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