IEEE Trans Image Process - t-Tests, F-tests and Otsu's methods for image thresholding.

Tópicos

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Resumo

Otsu's binarization method is one of the most popular image-thresholding methods; Student's t -test is one of the most widely-used statistical tests to compare two groups. This paper aims to stress the equivalence between Otsu's binarization method and the search for an optimal threshold that provides the largest absolute Student's t-statistic. It is then naturally demonstrated that the extension of Otsu's binarization method to multi-level thresholding is equivalent to the search for optimal thresholds that provide the largest F -statistic through one-way analysis of variance (ANOVA). Furthermore, general equivalences between some parametric image-thresholding methods and the search for optimal thresholds with the largest likelihood-ratio test statistics are briefly discussed.

Resumo Limpo

otsus binar method one popular imagethreshold method student t test one widelyus statist test compar two group paper aim stress equival otsus binar method search optim threshold provid largest absolut student tstatist natur demonstr extens otsus binar method multilevel threshold equival search optim threshold provid largest f statist oneway analysi varianc anova furthermor general equival parametr imagethreshold method search optim threshold largest likelihoodratio test statist briefli discuss

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