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- W3197992114 abstract "In the validation of high-resolution pixel scale reflectance, the uncertainty of point-to-plane scaling is an important constraint factor in getting the reference true value of pixel-scale. The spatial heterogeneity of the surface is the cause of it. The quantitative relationship between them can provide guidance for the quantitative calculation of the scaling uncertainty in the validation, and reference for site selection and sampling optimization. This paper proposes a spectral measurement simulation and scaling uncertainty calculation method based on UAV high-resolution images. The quantitative relationship between spatial heterogeneity and scaling uncertainty is analyzed, and the influence of sampling method, sampling number and plane scale on the relationship is discussed. The gray-scale value is used as the reference of reflectivity. The results show that the relationships of different sampling schemes are consistent, the cv is significantly positive correlation with the average scaling uncertainty, and R <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</sup> is above 0.98; Random sampling has larger scaling uncertainty than system sampling, and the smaller number of sampling points and the larger the plane scale, the larger the scaling uncertainty." @default.
- W3197992114 created "2021-09-13" @default.
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- W3197992114 date "2021-08-27" @default.
- W3197992114 modified "2023-09-25" @default.
- W3197992114 title "Quantitative relationship study between spatial heterogeneity and uncertainty of high-resolution pixel scale based on spectral measurement simulation" @default.
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- W3197992114 doi "https://doi.org/10.1109/icoim52180.2021.9524382" @default.
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