Spectroscopy and Spectral Analysis, Volume. 42, Issue 4, 1092(2022)
Hyperspectral Inversion Model for SPAD of Rice Leaves Based on Optimized Spectral Index
It is one of the necessary measures to achieve accurate regulation and scientific management of rice production using the characteristic bands of hyperspectral reflectance curve to construct spectral index and establish chlorophyll content inversion model.In order to establish a hyperspectral inversion model for relative chlorophyll content (SPAD values) of rice leaves at the jointing and booting stage, the hyperspectral data and SPAD values of rice leaves at the jointing and booting stage were obtained respectively. The original spectral reflectance curve was denoised utilizing using the wavelet analysis method, and the spectral index NAOC based on the integral operation was simplified to obtain a simple spectral reflectance curve based on dual-wavelength. The correlation coefficients between SPAD values of rice leaves at jointing and booting stage and the optimized spectral and transformed spectral indices constructed by the original reflectance spectrum R and mathematical transformation spectrum LgR, 1/R and
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Yue YU, Hai-ye YU, Xiao-kai LI, Hong-jian WANG, Shuang LIU, Lei ZHANG, Yuan-yuan SUI. Hyperspectral Inversion Model for SPAD of Rice Leaves Based on Optimized Spectral Index[J]. Spectroscopy and Spectral Analysis, 2022, 42(4): 1092
Category: Research Articles
Received: Mar. 24, 2021
Accepted: --
Published Online: Jul. 25, 2023
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