Method for evaluating tree production capacity, imaging device for evaluating tree production capacity, and program for evaluating tree production capacity

摘要

[PROBLEMS] To improve tree productivity without requiring much time for isolated trees or spaced trees by a non-destructive technique using a crown structure measuring device or an imaging device equipped with a fisheye lens. Enable evaluation. Intensity of light transmitted through a tree leaf determined by determining a rotating semi-ellipsoidal model as a representation of the outer shape of the tree body and placing an optical tree structure measuring device at a predetermined distance from the main trunk And the intensity of light that does not pass through the leaves, calculate the optical path length through which the light incident on the tree passes through a semi-ellipsoidal model, and the tree body from the measured light intensity and the optical path length Find the total leaf area. Instead of the optical tree structure measuring apparatus, an imaging apparatus equipped with a fisheye lens is arranged, and the total leaf area of the tree body is also obtained by arithmetic processing on image data acquired by imaging. [Selection] Figure 4