PMID- 36560379 OWN - NLM STAT- MEDLINE DCOM- 20221226 LR - 20221226 IS - 1424-8220 (Electronic) IS - 1424-8220 (Linking) VI - 22 IP - 24 DP - 2022 Dec 19 TI - Multi-Scale Strengthened Directional Difference Algorithm Based on the Human Vision System. LID - 10.3390/s222410009 [doi] LID - 10009 AB - The human visual system (HVS) mechanism has been successfully introduced into the field of infrared small target detection. However, most of the current detection algorithms based on the mechanism of the human visual system ignore the continuous direction information and are easily disturbed by highlight noise and object edges. In this paper, a multi-scale strengthened directional difference (MSDD) algorithm is proposed. It is mainly divided into two parts: local directional intensity measure (LDIM) and local directional fluctuation measure (LDFM). In LDIM, an improved window is used to suppress most edge clutter, highlights, and holes and enhance true targets. In LDFM, the characteristics of the target area, the background area, and the connection between the target and the background are considered, which further highlights the true target signal and suppresses the corner clutter. Then, the MSDD saliency map is obtained by fusing the LDIM map and the LDFM map. Finally, an adaptive threshold segmentation method is employed to capture true targets. The experiments show that the proposed method achieves better detection performance in complex backgrounds than several classical and widely used methods. FAU - Zhang, Yuye AU - Zhang Y AUID- ORCID: 0000-0002-4118-6978 AD - Information Science and Engineering Department, Xinjiang University, Urumqi 830017, China. FAU - Zheng, Ying AU - Zheng Y AD - Information Science and Engineering Department, Xinjiang University, Urumqi 830017, China. FAU - Li, Xiuhong AU - Li X AD - Information Science and Engineering Department, Xinjiang University, Urumqi 830017, China. LA - eng GR - 2020D01C026/Xinjiang Natural Science Foundation/ PT - Journal Article DEP - 20221219 PL - Switzerland TA - Sensors (Basel) JT - Sensors (Basel, Switzerland) JID - 101204366 SB - IM MH - Humans MH - *Algorithms MH - *Optical Devices MH - Attention PMC - PMC9783212 OTO - NOTNLM OT - human visual system (HVS) OT - infrared image OT - multi-scale strengthened directional difference (MSDD) OT - small target detection COIS- The authors declare no conflicts of interest. EDAT- 2022/12/24 06:00 MHDA- 2022/12/27 06:00 PMCR- 2022/12/19 CRDT- 2022/12/23 02:04 PHST- 2022/09/16 00:00 [received] PHST- 2022/12/08 00:00 [revised] PHST- 2022/12/15 00:00 [accepted] PHST- 2022/12/23 02:04 [entrez] PHST- 2022/12/24 06:00 [pubmed] PHST- 2022/12/27 06:00 [medline] PHST- 2022/12/19 00:00 [pmc-release] AID - s222410009 [pii] AID - sensors-22-10009 [pii] AID - 10.3390/s222410009 [doi] PST - epublish SO - Sensors (Basel). 2022 Dec 19;22(24):10009. doi: 10.3390/s222410009.