Finding contrasted and regular edges by a contrario detection of periodic subsequences

Andrés Almansa (1) , Mariano Tepper (2) , Pablo Musé (3) , Marta Mejail (2)

1 LTCI - Laboratoire Traitement et Communication de l'Information
2 Departamento de Computación [Buenos Aires]
3 IIE - Instituto de Ingeniería Eléctrica

A new method to detect salient pieces of boundaries in an image is presented. After detecting perceptually meaningful level lines, periodic binary sequences are built by labeling each point in close curves as salient or non-salient. We propose a general and automatic method to detect meaningful subsequences within these binary sequences. Experimental results show its good performance, when tested with different saliency criteria, such as contrast, regularity, and the combination of both.

Mots clés: topographic maps; level lines; periodic binary sequences; edge detection; Helmholtz principle

Domaines: Traitement du signal et de l'image [eess.SP]; Traitement des images [eess.IV]; Vision par ordinateur et reconnaissance de formes [cs.CV]; Analyse numérique [math.NA]; Statistiques [math.ST]

Andrés Almansa, Mariano Tepper, Pablo Musé, Marta Mejail. Finding contrasted and regular edges by a contrario detection of periodic subsequences. Pattern Recognition, 2014, 47 (1), pp.72 - 79. ⟨10.1016/j.patcog.2013.06.025⟩. ⟨hal-01867722⟩