Gabor filters as texture discriminator View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

1989-06

AUTHORS

I. Fogel, D. Sagi

ABSTRACT

The present paper presents a model for texture discrimination based on Gabor functions. In this model the Gabor power spectrum of the micropatterns corresponding to different textures is calculated. A function that measures the difference between the spectrum of two micropatterns is introduced and its values are correlated with human performance in preattentive detection tasks. In addition, a two stage algorithm for texture segregation is presented. In the first stage the input image is transformed via Gabor filters into a representation image that allows discrimination between features by means of intensity differences. In the second stage the borders between areas of different textures are found using a Laplacian of Gaussian operator. This algorithm is sensitive to energy differences, rotation and spatial frequency and is insensitive to local translation. The model was tested by means of several simulations and was found to be in good correlation with known psychophysical characteristics as texton based texture segregation and micropattern density sensitivity. However, this simple model fails to predict human performance in discrimination tasks based on differences in the density of “terminators”. In this case human performance is better than expected. More... »

PAGES

103-113

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/bf00204594

DOI

http://dx.doi.org/10.1007/bf00204594

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1017610398


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