title: Improved local ternary patterns for automatic target recognition in infrared imagery.
abstract: This paper presents an improved local ternary pattern (LTP) for automatic target recognition (ATR) in infrared imagery. Firstly, a robust LTP (RLTP) scheme is proposed to overcome the limitation of the original LTP for achieving the invariance with respect to the illumination transformation. Then, a soft concave-convex partition (SCCP) is introduced to add some flexibility to the original concave-convex partition (CCP) scheme. Referring to the orthogonal combination of local binary patterns (OC_LBP), the orthogonal combination of LTP (OC_LTP) is adopted to reduce the dimensionality of the LTP histogram. Further, a novel operator, called the soft concave-convex orthogonal combination of robust LTP (SCC_OC_RLTP), is proposed by combing RLTP, SCCP and OC_LTP. Finally, the new operator is used for ATR along with a blocking schedule to improve its discriminability and a feature selection technique to enhance its efficiency. Experimental results on infrared imagery show that the proposed features can achieve competitive ATR results compared with the state-of-the-art methods.
authors.affiliation: School of Computer Science and Technology, Henan Polytechnic University, 2001 Century Avenue, Jiaozuo 454000, China. wuxs@hpu.edu.cn.
authors.forename: Xiaosheng
authors.initials: X
authors.lastname: Wu
authors.affiliation: School of Computer Science and Technology, Henan Polytechnic University, 2001 Century Avenue, Jiaozuo 454000, China. sunharry@hotmail.com.
authors.forename: Junding
authors.initials: J
authors.lastname: Sun
authors.affiliation: School of Electrical and Computer Engineering, Oklahoma State University, 202 Engineering South, Stillwater, OK 74078, USA. guoliang.fan@okstate.edu.
authors.forename: Guoliang
authors.initials: G
authors.lastname: Fan
authors.affiliation: School of Computer Science and Technology, Henan Polytechnic University, 2001 Century Avenue, Jiaozuo 454000, China. wangzh@hpu.edu.cn.
authors.forename: Zhiheng
authors.initials: Z
authors.lastname: Wang