In this paper,sub-Gaussian random projection is introduced into compressed sensing(CS) theory and two new kinds of CS measurement matrix:sparse projection matrix and very sparse projection matrix are presented.By the tail bounds for sub-Gaussian random projections,the proof of how these new matrices satisfy the necessary condition for CS measurement matrix is provided.Then,it is expatiated that owing to their sparseness,new kinds of matrices greatly simplify the projection operation during image reconstruct...