Abstract
We propose improved multilevel filters (IMLFs) involving the absolute value
operation into the algorithmic framework of traditional multilevel filters (MLFs) to
improve the robustness of infrared small target enhancement techniques under a
complex infrared cluttered background. Compared with the widely used small target
enhancement methods which only deal with bright targets, the proposed technique can
enhance the infrared small target, whether it is bright or dark. Experimental
results verify that the proposed technique is efficient and practical.
© 2011 Chinese Optics Letters
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