Patent ID: 11936869
Assignee: INSPUR SUZHOU INTELLIGENT TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC G  H

Claim 3:
4. The image compression sampling method according to claim 3, wherein solving a minimum value of the sparse error according to a target function to obtain the optimized sparse matrix comprises:
updating each column in the initial sparse matrix according to a first formula to solve the minimum value, and obtaining the optimized sparse matrix, the first formula being ψn=SnXnT×(XnXnT)−1;
where ψn is an nth column in the optimized sparse matrix; Sn is an nth column in the optimized sparse representation result; Xn is an nth column in the image matrix; and XnT is an nth column of a transposed matrix of the image matrix.