Xiao-dan MA, Meng LIU, Hai-ou GUAN, Feng-rui WEN, Gang LIU. Recognition Method for Crop Canopies Based on Thermal Infrared Image Processing Technology[J]. Spectroscopy and Spectral Analysis, 2021, 41(1): 216
- Spectroscopy and Spectral Analysis
- Vol. 41, Issue 1, 216 (2021)
Fig. 1. Double-source images
(a): Thermal infrared image; (b): Visible image
(a): Thermal infrared image; (b): Visible image
Fig. 2. Visible image segmentation
(a): Visible image of sample;(b): Visible image of canopy after segmentation
(a): Visible image of sample;(b): Visible image of canopy after segmentation
Fig. 3. Feature points match images
Fig. 4. Initial registration effect of thermal infrared image and reference image
(a): Original thermal infrared image;(b): Initial registration effect
(a): Original thermal infrared image;(b): Initial registration effect
Fig. 5. Image exact matching process
(a): Angle registration; (b): Horizontal registration; (c): Vertical registration; (d): Proportional registration
(a): Angle registration; (b): Horizontal registration; (c): Vertical registration; (d): Proportional registration
Fig. 6. Contrast of recognition effect of thermal infrared images
(a): Original thermal infrared image; (b): Energy distribution of original image;(c): Recognition effect of thermal infrared image of canopy; (d): Energy distribution of canopy image after recognition
(a): Original thermal infrared image; (b): Energy distribution of original image;(c): Recognition effect of thermal infrared image of canopy; (d): Energy distribution of canopy image after recognition
Fig. 7. Mutual information contrast of recognition effect of thermal infrared images
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Table 1. Changes of temperature and entropy
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Table 2. Reference image evaluation index
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