Robust Hierarchical Framework for Image Classification via Sparse Representation

The sparse representation-based classification algorithm has been used for human face recognition.But an image database was restricted to human frontal faces with only slight illumination and expression changes.Cropping and normalization of the face needs to be done beforehand.This paper uses a sparse representation-based algorithm for generic image classification with some intra-class variations and background clutter.A hierarchical framework based on the sparse representation is developed which flexibly c...