28 May 2003 Multilevel thresholding by fast PNN-based algorithm
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We propose a fast PNN-based O(N log N) time algorithm for multilevel non-parametric thresholding, where N denotes the size of the image histogram. The proposed PNN based multilevel thresholding algorithm is considerably faster than optimal thresholding. On a set of 8-16 bits per pixel real images, experimental results also reveal that the proposed method provides better quality than the Lloyd-Max quantizer alone. Since the time complexity of the proposed thresholding algorithm is log-linear, it is applicable in real-time image processing applications.
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Olli Virmajoki, Olli Virmajoki, Pasi Franti, Pasi Franti, } "Multilevel thresholding by fast PNN-based algorithm", Proc. SPIE 5014, Image Processing: Algorithms and Systems II, (28 May 2003); doi: 10.1117/12.477741; https://doi.org/10.1117/12.477741

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