Characteristics of multi-spectral imaging system and the image enhancement algorithm are introduced.Because
histogram equalization and some other image enhancement will change the original gray level,a new image enhancement
algorithm is proposed to maintain the gray level.For this paper, we have chosen 6 narrow-bands multi-spectral images to
compare,the experimental results show that the proposed method is better than those histogram equalization and other
algorithm to multi-spectral images.It also insures that histogram information contained in original features is preserved
and guarantees to make use of data class information.What’s more,on the combination of subjective and objective
sharpness evaluation,details of the images are enhanced and noise is weaken.
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