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Izvorni znanstveni članak
Maximum Entropy Segmentation Based on the Autocorrelation Function of the Image Histogram
Anton Brink
; Department of Physics, University of Pretoria, Pretoria, South Africa
| Puni tekst: engleski, pdf (3 MB) | str. 77-85 | citiraj | |
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APA 6th Edition Brink, A. (1994). Maximum Entropy Segmentation Based on the Autocorrelation Function of the Image Histogram. Journal of computing and information technology, 2 (2), 77-85. Preuzeto s https://hrcak.srce.hr/150467 MLA 8th Edition Brink, Anton. "Maximum Entropy Segmentation Based on the Autocorrelation Function of the Image Histogram." Journal of computing and information technology, vol. 2, br. 2, 1994, str. 77-85. https://hrcak.srce.hr/150467. Citirano 24.02.2020. Chicago 17th Edition Brink, Anton. "Maximum Entropy Segmentation Based on the Autocorrelation Function of the Image Histogram." Journal of computing and information technology 2, br. 2 (1994): 77-85. https://hrcak.srce.hr/150467 Harvard Brink, A. (1994). 'Maximum Entropy Segmentation Based on the Autocorrelation Function of the Image Histogram', Journal of computing and information technology, 2(2), str. 77-85. Preuzeto s: https://hrcak.srce.hr/150467 (Datum pristupa: 24.02.2020.) Vancouver Brink A. Maximum Entropy Segmentation Based on the Autocorrelation Function of the Image Histogram. Journal of computing and information technology [Internet]. 1994 [pristupljeno 24.02.2020.];2(2):77-85. Dostupno na: https://hrcak.srce.hr/150467 IEEE A. Brink, "Maximum Entropy Segmentation Based on the Autocorrelation Function of the Image Histogram", Journal of computing and information technology, vol.2, br. 2, str. 77-85, 1994. [Online]. Dostupno na: https://hrcak.srce.hr/150467. [Citirano: 24.02.2020.] |
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Sažetak
Most threshold selection schemes using the principle of maximum entropy regard the image or its histogram as a probability distribution. While such models can to a great extent be justified, a common assumption is that the discrete samples in these distributions (pixels or greylevels) are independent. It is intuitively clear that this is not the case. The proposed method uses the histogram autocorrelation function as a measure of grey-level interdependence. The Shannon entropy of this distribution is then viewed as a measure of image grey-level entropy, where grey-level inter- dependence has implicitly been taken into account. The thresholding process splits the histogram into sub-histograms, ideally corresponding to distinct regions within the image. The entropies of the autocorrelation functions of these subranges are determined and maximized to find the optimum threshold. Two methods of maximizing the class entropies are implemented and some typical results are presented.
Ključne riječi
probability distribution; sub-histograms
Hrčak ID: 150467
URI
https://hrcak.srce.hr/150467
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