LIU Xinyun, ZHENG Jianghua. The fractal theory texture-based classification of Apocynum venetum in Xinjiang, China. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 58(1):22-29(2019)
DOI:
LIU Xinyun, ZHENG Jianghua. The fractal theory texture-based classification of Apocynum venetum in Xinjiang, China. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 58(1):22-29(2019) DOI: 10.13471/j.cnki.acta.snus.2019.01.003.
The fractal theory texture-based classification of Apocynum venetum in Xinjiang, China
In order to improve the accuracy of the application of remote sensing image in plant classification beyond the weakness of only using spectral information
the texture features of
Apocynum venetum
a typical wild plant in Xinjiang
are extracted based on fractal theory from Worldview2 satellite images by means of double blanket coverage model which are further analyzed by Gray Level Co-occurrence Matrix (GLCM) methods for its classification. Maximum likelihood method is used to classify the textures
and the classification results from different moving window sizes (3×3
5×5
7×7 and 9×9) are compared. The results show that overall classification precision increased by 1.21% to 8.63% for the texture classification compared to traditional spectral information classification
the precision based on fractal theory is more than twice as much as GLCM based texture classification. The classification accuracy of
Apocynum venetum
increased to 99.96% when this parameter was combined with fractal-based textures. By contrast
the accuracy reduced by 0.09% to 0.12% with GLCM-based textures
and there is best classification precision when fractal-based texture was extracted with a 5×5 sliding block. Therefore
the textures based on fractal theory could effectively improve the accuracy of Worldview-2 images in plant classification by GLCM and double blanket coverage model.