Abstract
Laser back-scattering images of wheat leaves (green leaves, yellow leaves and dry leaves)are obtained with video imaging system, the optical parameters (absorption coefficient and reduced scatering coefficient)of the wheat leaves are reversed with diffusion approximation theory, the functional relations between optical parameters(at 670nm) and chlorophyll contents (SPAD value)of the leaves are studied. The results demonstrate that: wheat leaf optical parameters and chlorophyll content present linear correlation, it is feasible for determing plant chlorophyll content with laser back-scattering image technology. These researches are very valuable for diagnosis crop condition with the results of laser scattering image
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