Estimating Leaf Carotenoid Concentration of Ginger in Different Layers Based on Discrete Wavelet Transform Algorithm

  • Qinhong Liao
Conference paper
Part of the IFIP Advances in Information and Communication Technology book series (IFIPAICT, volume 545)


Ginger is one of the very important industrial crops in southwest, China. Accurate estimation of its leaf carotenoid concentration (LCC) is important to assess ginger photosynthetic capacity and direct the precision agriculture management. This study focused on introducing a new approach for estimating the LCC of ginger leaves in different leave layers. First, five commonly used vegetation indices (PSSR, PSND, CRI550, CRI700, BRI) were performed to estimate the LCC. The PSSR got a better result with the higher estimation accuracy (R2 = 0.46). Second, the discrete wavelet transform algorithm (DWTA) was used to extract the wavelet feature vectors for estimating the LCC. The result showed that the most sensitive wavelet feature vector was in the sixth decomposition scale. The highest estimation accuracy (R2) was 0.86 for the lower leaf layer. Compared with those vegetation indices, the estimation accuracy (R2) improved 46.5%–71.1%, which indicated that the LCC of ginger in different leave layers can be accurately estimated by DWTA.


Ginger Leaf carotenoid concentration Discrete wavelet transform algorithm Wavelet feature vector 



This work was supported by National Natural Science Foundation of China (No. 41401419); A Project Supported by Scientific Research Fund of Chongqing Municipal Education Commission (KJQN201801335).


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© IFIP International Federation for Information Processing 2019

Authors and Affiliations

  1. 1.Research Institution for Special PlantsChongqing University of Art and ScienceChongqingChina

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