[4] [4] DANIEL O, ARTURO D L E, JOSE M A.Far infrared pedestrian detection and tracking for night driving ［J］.Robotica, 2011, 29(4): 495-505.

[5] [5] TANG Y Z, LI Y F.Contour coding based rotating adaptive model for human detection and tracking in thermal catadioptric omnidirectional vision［J］.Applied Optics, 2012, 51(27): 6641-6652.

[6] [6] SUK J L, GAURAV S, ARKA A B.Human tracking with an infrared camera using curve matching framework［J］.EURASIP Journal on Advances in Signal Processing, 2012(1): 99-106.

[7] [7] LIU R M, LU Y H.Infrared target tracking in multiple feature pseudo-color image with kernel density estimation［J］.Infrared Physics & Technology, 2012, 55(6): 505-512.

[8] [8] YAN J B, LI X J, XIN Y, et al.Compressive sensing by learning a Gaussian mixture model from measurements［J］.IEEE Transactions on Image Processing, 2014, 24(1): 106-119.

[9] [9] PEKKA P, JONI K K, JARMO I.Feature representation and discrimination based on Gaussian mixture model probability densities—practices and algorithms［J］.Pattern Recognition, 2006, 39(7): 1346-1358.

[10] [10] DALAL N, TRIGGS B.Histograms of oriented gradients for human detection［C］//IEEE Computer Society Conference on Computer Vision and Pattern Recognition(CVPR), San Diego, 2005: 886-893.

[11] [11] WU B F, KAO C C, JEN C L, et al. A relative-discriminative-histogram-of-oriented-gradients-based particle filter approach to vehicle occlusion handling and tracking［J］. IEEE Transactions on Industrial Electronics, 2014, 61(3): 4228-4237.

[12] [12] MASATAKA O, KEI K, MASAFUMI H.Laser-based pedestrian tracking in outdoor environments by multiple mobile robots［J］.Sensors, 2012, 12(11): 14489-14507.

[13] [13] MOSHOU D, PANTAZI X E, KATERIS D, et al.Water stress detection based on optical multisensor fusion with a least squares support vector machine classifier［J］. Biosystems Engineering, 2014, 117(2): 15-22.