求翻译：因此，接下来为了排除建筑物及其阴影的干扰，首先在光谱特征提取的基础上，利用建筑物与水体的纹理差异，排除一部分建筑物及其阴影的干扰。是什么意思？

Thus, the next in order to exclude the interference of buildings and their shadows, the first feature extraction of the spectrum, based on the use of buildings and water texture differences, eliminate the interference of some buildings and their shadows.

Thus, the next in order to remove buildings and its shadow, first and foremost, in the interference on the basis of spectral feature extraction and use of buildings and water texture differences, to the exclusion of a part of the building and its shadow interference.

Therefore, meets down in order to remove the building and the shadow disturbance, first in the spectrum characteristic extraction foundation, using the building and the water body texture difference, removes part of buildings and the shadow disturbance.

Therefore, the next to prevent interference of the building and its shadow, in spectral feature extraction based on the first, using the buildings and texture differences in water, excluding part of the building and the interference of the shadow.

Therefore, the next to prevent interference of the building and its shadow, in spectral feature extraction based on the first, using the buildings and texture differences in water, excluding part of the building and the interference of the shadow.