Astigmatic Filtering in the Observation of Sonograms

Autor:	O.J. Nejamis, N.G. Gaggioli, E. N. Hogert
Rok vydání:	1984
Předmět:	Computer science Stochastic modelling business.industry media_common.quotation_subject Directional filtering Astigmatism medicine.disease Electronic Optical and Magnetic Materials Optics medicine Contrast (vision) Filter effect business Algorithm media_common
Zdroj:	Optica Acta: International Journal of Optics. 31:1017-1026
ISSN:	0030-3909
DOI:	10.1080/713821602
Popis:	Directional filtering by astigmatism is used to enhance the observation of sonograms when the signal-to-noise ratio is poor. To explain and quantify the filter effect, a stochastic model, applicable to other textures, is designed and verified. Since the classical definition of contrast cannot be used, a new parameter for the estimation of contrast is introduced.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c44ebf7a12719baf8193a3a9e4235f29 https://doi.org/10.1080/713821602 Zobrazit plný text záznamu