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Our computer modeling technique reproduces a tree's 3D volume and skeleton from instrumented photographs. The technique involves first constructing the skeleton (trunk and the major branches) of the tree, and then applying an L-system starting from this skeleton. L-systems are one of the better known procedural models in the graphics community, especially after their popularization by P. Prusinkiewicz and A. Lindenmayer (1990).
Shlyakhter et al. (Mon,) studied this question.