Examinando por Autor "S. Montemayor, Antonio"

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    A non-smooth, non-local variational approach to saliency detection in real time
    (2023-12) Alcaín, Eduardo; Muñoz Montalvo, Ana Isabel; Schiavi, Emanuele; S. Montemayor, Antonio
    In this paper, we propose and solve numerically a general non-smooth, non-local variational model to tackle the saliency detection problem in natural images. In order to overcome the typical drawback of the non-local methods in image processing, which mainly is the inherent computational complexity of non-local calculus, as the non-local derivatives are computed w.r.t every point of the domain, we propose a diferent scenario. We present a novel convex energy minimization problem in the feature space, which is eficiently solved by means of a non-local primal-dual method. Several implementations and discussions are presented taking care of the computing platforms, CPU and GPU, achieving up to 33 fps and 62 fps respectively for 300×400 image resolution, making the method eligible for real time applications.