Chan, S. S.; McCreight, R. W.; Walstad, J. D.; Spies, T. A. 1986. Evaluating forest vegetative cover with computerized analysis of fisheye photographs. Forest Science. 32(4): 1085-1091.
A versatile, computerized system for expediting analysis of fisheye photos of forestand shrub canopy conditions was developed and refined. The materials necessary for takingand analyzing fisheye photos are readily available and the methods easily learned. Althoughthe equipment required (camera, fisheye lens, microcomputer, and related accessories) has arelatively high fixed cost, the efficiency and accuracy gained may justify implementing thesystem, particularly if large numbers of photos must be processed. Computerized fisheye pho-tographic analysis is a practical tool for assessing and documenting forest vegetative cover andits implications for the radiation environment of understory plants.
ADDITIONAL KEY WORDS. Hemispherical photography, forest vegetation management, prob-ability of diffuse radiation, overstory-understory relationships.