Journal of Systems Engineering and Electronics ›› 2006, Vol. 17 ›› Issue (2): 268-273.doi: 10.1016/S1004-4132(06)60046-7

• ELECTRONICS TECHNOLOGY • Previous Articles     Next Articles

New algorithm for infrared small target image enhancement based on wavelet transform and human visual properties

Wang Xuewei, Liu Songtao & Zhou Xiaodong   

  1. Automatic Control Engineering Dept , Naval Aeronautical Engineering Inst. , Yantai 264001, P. R. China (Received February 17, 2005)
  • Online:2006-06-26 Published:2019-12-20


The key to the wavelet based denoising techniques is how to manipulate the wavelet coefficients. By referring to the idea of Inclusive-OR in the design of circuits, this paper proposes a new algorithm called wavelet domain Inclusive-OR denoising algorithm (WDIDA), which distinguishes the wavelet coefficients belonging to image or noise by considering their phases and modulus maxima simultaneously. Using this new algorithm, the denoising effects are improved and the computation time is reduced. Furthermore, in order to enhance the edges of the image but not magnify noise, a contrast nonlinear enhancing algorithm is presented according to human visual properties. Compared with traditional enhancing algorithms, the algorithm that we proposed has a better noise reducing performance, preserving edges and improving the visual quality of images.

Key words: image enhancement, wavelet transform, human visual properties, inclusive-OR