A METHOD OF TARGET DETECTION IN INFRARED IMAGE SEQUENCE BASED ON CONTOURLET TRANSFORM

A new extension of wavelet transform called contourlet is introduced.With rich set of basis images oriented at varying directions in multiple scales,Contourlet transform can effectively capture the smooth contours.This paper presents a new small target de- tection approach,which is based on contourlet transform.This method picks up the texture characteristic from the maps after contourlet transform,and calculates the distance between characteristic vector and center characteristic vector.This can gain a correlative multi- scale distance map.The histogram of distance map is employed for the automatic selection of threshold value.The results of the experi- ment are showed,and compared with the method based on wavelet transform.The results show that this approach can precisely detect the small infrared target and it is better than the method based on wavelet transform.