AUTOMATIC GRADIENT THRESHOLD DETERMINATION FOR EDGE-DETECTION

Authors
HENSTOCK PV CHELBERG DM
Citation
Pv. Henstock et Dm. Chelberg, AUTOMATIC GRADIENT THRESHOLD DETERMINATION FOR EDGE-DETECTION, IEEE transactions on image processing, 5(5), 1996, pp. 784-787
Citations number
18
Categorie Soggetti
Engineering, Eletrical & Electronic
Journal title
IEEE transactions on image processing → ACNP
ISSN journal
10577149
Volume
5
Issue
5
Year of publication
1996
Pages
784 - 787
Database
ISI
SICI code
1057-7149(1996)5:5<784:AGTDFE>2.0.ZU;2-O
Abstract
We describe a method to automatically find gradient thresholds to sepa rate edge from nonedge pixels. A statistical model that is the weighte d smm of two gamma densities corresponding to edge and nonedge pixels is used to identify a threshold. Results closely match human perceptua l thresholds even under low signal-to-noise ratio (SNR) levels.