Connected Rotation-Invariant Size-Shape Granulometries. - Erik R. Urbach; Jos B. T. M. Roerdink; Michael H. F. Wilkinson (ICPR (1), 2004)

Vector-Attribute Filters. - Erik R. Urbach; Niek J. Boersma; Michael H. F. Wilkinson (ISMM, 2005)

Efficient 2-D Gray-Scale Dilations and Erosions with Arbitrary Flat Structuring Elements. - Erik R. Urbach; Michael H. F. Wilkinson (ICIP, 2006)

Classification of objects consisting of multiple segments with application to crater detection. - Erik Ronald Urbach (ISMM (2), 2007)

Connected Shape-Size Pattern Spectra for Rotation and Scale-Invariant Classification of Gray-Scale Images. - Erik R. Urbach; Jos B. T. M. Roerdink; Michael H. F. Wilkinson (IEEE Trans. Pattern Anal. Mach. Intell., 2007)

Efficient 2-D Grayscale Morphological Transformations With Arbitrary Flat Structuring Elements. - Erik R. Urbach; Michael H. F. Wilkinson (IEEE Trans. Image Process., 2008)

Segmentation of Cracks in Shale Rock. - Erik R. Urbach; Marina Pervukhina; Leanne Bischof (ISMM, 2011)

Intelligent Object Detection Using Trees. - Erik R. Urbach (ISMM, 2015)