J 2014

A performance evaluation of statistical tests for edge detection in textured images

WILLIAMS, Ian, Nicholas BOWRING a David SVOBODA

Základní údaje

Originální název

A performance evaluation of statistical tests for edge detection in textured images

Autoři

WILLIAMS, Ian (826 Velká Británie a Severní Irsko), Nicholas BOWRING (826 Velká Británie a Severní Irsko) a David SVOBODA (203 Česká republika, garant, domácí)

Vydání

Computer Vision and Image Understanding, Elsevier, 2014, 1077-3142

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

20200 2.2 Electrical engineering, Electronic engineering, Information engineering

Stát vydavatele

Nizozemské království

Utajení

není předmětem státního či obchodního tajemství

Impakt faktor

Impact factor: 1.540

Kód RIV

RIV/00216224:14330/14:00075212

Organizační jednotka

Fakulta informatiky

UT WoS

000334394900011

Klíčová slova anglicky

Edge detection; Statistical tests; Textured images; Histological images; Performance measures

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 27. 4. 2015 03:20, RNDr. Pavel Šmerk, Ph.D.

Anotace

V originále

This work presents an objective performance analysis of statistical tests for edge detection which are suitable for textured or cluttered images. The tests are subdivided into two-sample parametric and non-parametric tests and are applied using a dual-region based edge detector which analyses local image texture difference. Through a series of experimental tests objective results are presented across a comprehensive dataset of images using a Pixel Correspondence Metric (PCM). The results show that statistical tests can in many cases, outperform the Canny edge detection method giving robust edge detection, accurate edge localisation and improved edge connectivity throughout. A visual comparison of the tests is also presented using representative images taken from typical textured histological data sets. The results conclude that the non-parametric Chi Square and Kolmogorov Smirnov statistical tests are the most robust edge detection tests where image statistical properties cannot be assumed a priori or where intensity changes in the image are nonuniform and that the parametric Difference of Boxes test and the Student’s t-test are the most suitable for intensity based edges. Conclusions and recommendations are finally presented contrasting the tests and giving guidelines for their practical use while finally confirming which situations improved edge detection can be expected.