Fig. 1. Sliding window with 9 subblocks

Fig. 2. Sliding window passing through the interfering object

Fig. 3. Infrared images of four different scenes. (a) Ground background; (b) forest building background; (c) cloud background; (d) ocean sky background

Fig. 4. Saliency maps correspending to infrared images in Fig.3. (a) Ground background; (b) forest building background; (c) cloud background; (d) ocean sky background

Fig. 5. Experimental results of response maps. (a) Original infrared images; (b) original gray maps; (c) gray responsemaps using LMWIE;(d) gray response maps using MPCM; (e) gray response maps using proposed method

Fig. 6. Detection results of three algorithms under ground background. (a) Proposed algorithm; (b) LCM algorithm; (c) MPCM algorithm

Fig. 7. The difference between the means under two algorithms. (a) Original image; (b) the mean difference value of the center block and the neighborhood block; (c) the value of the advanced weighted entropy