The invention discloses a foundation
cloud atlas classification method based on spatial
pyramid random mapping. The method comprises the following steps of firstly, extracting local features from each training foundation
cloud atlas sample in a denseness sampling manner; then, carrying out
dimensionality reduction on each local feature by applying
random mapping, and mapping an original high-dimensionality
feature set to a low-dimensionality subspace; then, clustering features which are subjected to
dimensionality reduction in the low-dimensionality subspace, so as to obtain a
codebook; then, dividing a
sample image into different areas according to a spatial
pyramid model, obtaining area features of the different areas according to the
codebook, combining the area features, and taking the combined area features as final feature representation of the
sample image; finally, obtaining a
classification result of a tested foundation
cloud atlas by applying a
support vector machine classifier. According to the method, spatial information of the image can be obtained through applying the spatial
pyramid model, so that information in the cloud atlas can be better represented; meanwhile, the local features of the image are subjected to
dimensionality reduction by adopting
random mapping, so that the efficiency of a foundation cloud atlas classification
system can be increased, the time expense is reduced, and the dimensionality disaster can be avoided.