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Liu J, Zhu Y, Song L, Su X, Li J, Zheng J, Zhu X, Ren L, Wang W, Li X. Optimizing window size and directional parameters of GLCM texture features for estimating rice AGB based on UAVs multispectral imagery. FRONTIERS IN PLANT SCIENCE 2023; 14:1284235. [PMID: 38192693 PMCID: PMC10773816 DOI: 10.3389/fpls.2023.1284235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 12/04/2023] [Indexed: 01/10/2024]
Abstract
Aboveground biomass (AGB) is a crucial physiological parameter for monitoring crop growth, assessing nutrient status, and predicting yield. Texture features (TFs) derived from remote sensing images have been proven to be crucial for estimating crops AGB, which can effectively address the issue of low accuracy in AGB estimation solely based on spectral information. TFs exhibit sensitivity to the size of the moving window and directional parameters, resulting in a substantial impact on AGB estimation. However, few studies systematically assessed the effects of moving window and directional parameters for TFs extraction on rice AGB estimation. To this end, this study used Unmanned aerial vehicles (UAVs) to acquire multispectral imagery during crucial growth stages of rice and evaluated the performance of TFs derived with different grey level co-occurrence matrix (GLCM) parameters by random forest (RF) regression model. Meanwhile, we analyzed the importance of TFs under the optimal parameter settings. The results indicated that: (1) the appropriate window size for extracting TFs varies with the growth stages of rice plant, wherein a small-scale window demonstrates advantages during the early growth stages, while the opposite holds during the later growth stages; (2) TFs derived from 45° direction represent the optimal choice for estimating rice AGB. During the four crucial growth stages, this selection improved performance in AGB estimation with R2 = 0.76 to 0.83 and rRMSE = 13.62% to 21.33%. Furthermore, the estimation accuracy for the entire growth season is R2 =0.84 and rRMSE =21.07%. However, there is no consensus regarding the selection of the worst TFs computation direction; (3) Correlation (Cor), Mean, and Homogeneity (Hom) from the first principal component image reflecting internal information of rice plant and Contrast (Con), Dissimilarity (Dis), and Second Moment (SM) from the second principal component image expressing edge texture are more important to estimate rice AGB among the whole growth stages; and (4) Considering the optimal parameters, the accuracy of texture-based AGB estimation slightly outperforms the estimation accuracy based on spectral reflectance alone. In summary, the present study can help researchers confident use of GLCM-based TFs to enhance the estimation accuracy of physiological and biochemical parameters of crops.
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Affiliation(s)
- Jikai Liu
- College of Resource and Environment, Anhui Science and Technology University, Chuzhou, Anhui, China
- Anhui Province Crop Intelligent Planting and Processing Technology Engineering Research Center, Anhui Science and Technology University, Chuzhou, Anhui, China
| | - Yongji Zhu
- College of Resource and Environment, Anhui Science and Technology University, Chuzhou, Anhui, China
| | - Lijuan Song
- Institute of Agricultural Remote Sensing and Information, Heilongjiang Academy of Agricultural Sciences, Harbin, Heilongjiang, China
- School of Management, Heilongjiang University of Science and Technology, Harbin, Heilongjiang, China
| | - Xiangxiang Su
- College of Resource and Environment, Anhui Science and Technology University, Chuzhou, Anhui, China
| | - Jun Li
- College of Resource and Environment, Anhui Science and Technology University, Chuzhou, Anhui, China
| | - Jing Zheng
- College of Life Science, Langfang Normal University, Langfang, Hebei, China
| | - Xueqing Zhu
- College of Resource and Environment, Anhui Science and Technology University, Chuzhou, Anhui, China
| | - Lantian Ren
- Anhui Province Crop Intelligent Planting and Processing Technology Engineering Research Center, Anhui Science and Technology University, Chuzhou, Anhui, China
- College of Agriculture, Anhui Science and Technology University, Chuzhou, Anhui, China
| | - Wenhui Wang
- College of Life Science, Langfang Normal University, Langfang, Hebei, China
| | - Xinwei Li
- College of Resource and Environment, Anhui Science and Technology University, Chuzhou, Anhui, China
- Anhui Province Crop Intelligent Planting and Processing Technology Engineering Research Center, Anhui Science and Technology University, Chuzhou, Anhui, China
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Zidek J, Sudakova A, Smilek J, Nguyen DA, Ngoc HL, Ha LM. Explorative Image Analysis of Methylene Blue Interactions with Gelatin in Polypropylene Nonwoven Fabric Membranes: A Potential Future Tool for the Characterization of the Diffusion Process. Gels 2023; 9:888. [PMID: 37998978 PMCID: PMC10671130 DOI: 10.3390/gels9110888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 10/31/2023] [Accepted: 11/03/2023] [Indexed: 11/25/2023] Open
Abstract
This manuscript explores the interaction between methylene blue dye and gelatin within a membrane using spectroscopy and image analysis. Emphasis is placed on methylene blue's unique properties, specifically its ability to oscillate between two distinct resonance states, each with unique light absorption characteristics. Image analysis serves as a tool for examining dye diffusion and absorption. The results indicate a correlation between dye concentrations and membrane thickness. Thinner layers exhibit a consistent dye concentration, implying an even distribution of the dye during the diffusion process. However, thicker layers display varying concentrations at different edges, suggesting the establishment of a diffusion gradient. Moreover, the authors observe an increased concentration of gelatin at the peripheries rather than at the center, possibly due to the swelling of the dried sample and a potential water concentration gradient. The manuscript concludes by suggesting image analysis as a practical alternative to spectral analysis, particularly for detecting whether methylene blue has been adsorbed onto the macromolecular network. These findings significantly enhance the understanding of the complex interactions between methylene blue and gelatin in a membrane and lay a solid foundation for future research in this field.
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Affiliation(s)
- Jan Zidek
- Central European Institute of Technology (CEITEC), Brno University of Technology, Purkynova 123, 612 00 Brno, Czech Republic
| | - Anna Sudakova
- Central European Institute of Technology (CEITEC), Brno University of Technology, Purkynova 123, 612 00 Brno, Czech Republic
- Faculty of Chemistry, Brno University of Technology, Purkynova 464/118, 612 00 Brno, Czech Republic
| | - Jiri Smilek
- Faculty of Chemistry, Brno University of Technology, Purkynova 464/118, 612 00 Brno, Czech Republic
| | - Duc Anh Nguyen
- Center for Research and Technology Transfer (CRETECH), Vietnam Academy of Science and Technology (VAST), 18-Hoang Quoc Viet, Nghia Do, Cau Giay, Hanoi 100000, Vietnam (H.L.N.)
| | - Hung Le Ngoc
- Center for Research and Technology Transfer (CRETECH), Vietnam Academy of Science and Technology (VAST), 18-Hoang Quoc Viet, Nghia Do, Cau Giay, Hanoi 100000, Vietnam (H.L.N.)
- Graduate University of Science and Technology (GUST), Vietnam Academy of Science and Technology (VAST), 18-Hoang Quoc Viet, Nghia Do, Cau Giay, Hanoi 100000, Vietnam
| | - Le Minh Ha
- Institute of Natural Products Chemistry (INPC), Vietnam Academy of Science and Technology (VAST), 18-Hoang Quoc Viet, Nghia Do, Cau Giay, Hanoi 100000, Vietnam;
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