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For the purpose of extracting slope information of farmland spots, this paper introduces how to choose the size of DEM grid according to topographic features. It has designed the method of using weighed mean filtering to process grid slope, which can produce the slope level map that is more suitable for farmland slope extraction. According to the problem that after overlaying slope map and farmland...
In order to eliminate the musical noise remained in the results enhanced by short-time spectral attenuation techniques, this paper proposes a novel a priori SNR estimator. The proposed estimator is built on Burg-based power spectral estimation, which takes into account the properties in estimator of smoothness, accuracy and resolution, with the emphasis on their relationships and influences on de-noising...
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