[Wen, Yimin; Xu, Zhi] Guilin Univ Elect Technol, Guangxi Key Lab Image & Graph Intelligent Proc, Guilin 541004, Peoples R China.
[Wen, Yimin; Yi, Haiyang] Guilin Univ Elect Technol, Guangxi Key Lab Trusted Software, Guilin 541004, Peoples R China.
[Li, Yujian] Guilin Univ Elect Technol, Sch Artificial Intelligence, Guilin 541004, Peoples R China.
[Fan, Zhigang] Zebra Technol China Corp, Shanghai 200122, Peoples R China.
[Xue, Yun] Hunan City Univ, Sch Municipal & Surveying Engn, Yiyang 413000, Peoples R China.