Department of Computer Science and Technology;
Huaqiao University;
Xiamen 361021;
China;
Fujian Key Laboratory of Big Data Intelligence and Security;
Huaqiao University;
Xiamen 361021;
China;
Xiamen Key Laboratory of Computer Vision and Pattern Recognition;
Huaqiao University;
Xiamen 361021;
China;
School of Computer Science and Technology;
Harbin Institute of Technology;
Shenzhen 518055;
China;
photomosaic image; tile image; target image; error minimization; mean absolute error;