Infrared Image Background Suppression Based on 2rd Curvelet Transform and ProbShrink[J]. Optics and precision engineering, 2008, 16(10): 1988-1994.DOI:
To detect weak targets in complex infrared background
this paper presents a new infrared image background suppression algorithm based on the 2rd generation Curvelet transform and ProbShrink. As the weak targets are described by high frequence of the 2rd generation Curvelet coefficients
we preserve these coefficients for later usage. Marginal statistics and joint satistics of the high frequence coefficents are used to find the positions of the target subband
then ProbShrink algorithm is used to suppress the background subband coeffients. Experiments show that our algorithm supress the infrared backgrounds well and preserve the weak targets.