Browsing Procesamiento de Señales e Imágenes Digitales by Author "Rodríguez Valderrama, Paul Antonio"
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Efficient algorithms for convolutional dictionary learning via accelerated proximal gradient
Silva Obregón, Gustavo Manuel (Pontificia Universidad Católica del PerúPE, 2019-04-05)Convolutional sparse representations and convolutional dictionary learning are mathematical models that consist in representing a whole signal or image as a sum of convolutions between dictionary filters and coefficient ... -
Novel Edge-Preserving Filtering Model Based on the Quadratic Envelope of the l0 Gradient Regularization
Vásquez Ortiz, Eduar Aníbal (Pontificia Universidad Católica del PerúPE, 2023-01-26)In image processing, the l0 gradient regularization (l0-grad) is an inverse problem which penalizes the l0 norm of the reconstructed image’s gradient. Current state-of-the art algorithms for solving this problem are based ... -
Object detection in videos using principal component pursuit and convolutional neural networks
Tejada Gamero, Enrique David (Pontificia Universidad Católica del PerúPE, 2018-05-03)Object recognition in videos is one of the main challenges in computer vision. Several methods have been proposed to achieve this task, such as background subtraction, temporal differencing, optical flow, particle filtering ...