The invention belongs to an
infrared dim-
small target detection method based on shear wave conversion in the
infrared image processing technology. The method comprises the following steps:
processing an original
infrared image by employing nonsubsampled Laplace
pyramid conversion and a
Shearlet filter in succession to obtain
high frequency information graphs of various directions under different scales, inhibiting background and
noise interference information, enhancing target information and extracting a dim-
small target. According to the invention, the nonsubsampled Laplace
pyramid conversion and a
Shearlet filter are employed to process the original
infrared image, through same scale and different scales fusion
processing of the obtained the
high frequency information graphs, the interference information is inhibited, the target information is enhanced, and the
high frequency information graphs are subjected to segmentation to obtain a clear dim-
small target graph; thereby the method has the characteristics of a short detection
processing flow,
small data processing amount, short processing time, capability of effectively raising performance of detecting the infrared dim-small target and obviously distinguishing a target and a complex background in the image, a good effect and the like.