IEEE Trans Image Process - Winding number constrained contour detection.

Tópicos

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Resumo

Salient contour detection can benefit from the integration of both contour cues and region cues. However, this task is difficult due to different nature of region representations and contour representations. To solve this problem, this paper proposes an energy minimization framework based on winding number constraints. In this framework, both region cues, such as color/texture homogeneity, and contour cues, such as local contrast and continuity, are represented in a joint objective function, which has both region and contour labels. The key problem is how to design constraints that ensure the topological consistency of the two kinds of labels. Our technique is based on the topological concept of winding number. Using a fast method for winding number computation, a small number of linear constraints are derived to ensure label consistency. Our method is instantiated by ratio-based energy functions. By successfully integrating both region and contour cues, our method shows advantages over competitive methods. Our method is extended to incorporate user interaction, which leads to further improvements.

Resumo Limpo

salient contour detect can benefit integr contour cue region cue howev task difficult due differ natur region represent contour represent solv problem paper propos energi minim framework base wind number constraint framework region cue colortextur homogen contour cue local contrast continu repres joint object function region contour label key problem design constraint ensur topolog consist two kind label techniqu base topolog concept wind number use fast method wind number comput small number linear constraint deriv ensur label consist method instanti ratiobas energi function success integr region contour cue method show advantag competit method method extend incorpor user interact lead improv

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