Finally, the tree without its foliage was put back in the goniometer, and the silhouette photography of the woody parts was performed, using the same protocol as for the trees with foliage (Section 2.2.2), except for that only three view azimuth angles (15°, 75°, 135°) were used in order to minimize the measurement time. The total number of photographs was therefore 21 (3 × 7), including two repetitions in nadir, i.e., there were 19 unique view angles.

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