Browsing Procesamiento de Señales e Imágenes Digitales. by Subject "Procesamiento de imágenes digitales"
Now showing items 1-10 of 10
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3D updating of solid models based on local geometrical meshes applied to the reconstruction of ancient monumental structures
(Pontificia Universidad Católica del PerúPE, 2014-10-14)We introduce a novel methodology for locally updating an existing 3D solid model of a complex monumental structure with the geometric information provided by a 3D mesh (point cloud) extracted from the digital survey of a ... -
Automatic regularization parameter selection for the total variation mixed noise image restoration framework
(Pontificia Universidad Católica del PerúPE, 2013-03-27)Image restoration consists in recovering a high quality image estimate based only on observations. This is considered an ill-posed inverse problem, which implies non-unique unstable solutions. Regularization methods allow ... -
Characterization of healthy skin with high-frequency ultrasound using quantitative ultrasound
(Pontificia Universidad Católica del PerúPE, 2018-08-20)The skin is the largest organ of the body that protects it from the external environment. High- frequency ultra sound (HF-US) has been used to visualize the skin in depth and to diagnose some pathologies in dermatological ... -
Computationally inexpensive parallel parking supervisor based on video processing
(Pontificia Universidad Católica del PerúPE, 2013-12-05)Parallel parking, in general, is a moderate difficulty maneuver. Moreover, for inexperienced drivers, it can be a stressful situation that can lead to errors such as stay far from the sidewalk or damage another vehicle ... -
Corn crops identification using multispectral images from unmanned aircraft systems
(Pontificia Universidad Católica del PerúPE, 2019-04-08)Climate change and migration of population from rural to urban areas are affecting the agricultural production around the world. This study was based in the particular department of Ancash - Peru where corn is one of the ... -
Multi-scale image inpainting with label selection based on local statistics
(Pontificia Universidad Católica del PerúPE, 2014-09-09)We proposed a novel inpainting method where we use a multi-scale approach to speed up the well-known Markov Random Field (MRF) based inpainting method. MRF based inpainting methods are slow when compared with other ... -
Novel Edge-Preserving Filtering Model Based on the Quadratic Envelope of the l0 Gradient Regularization
(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 ... -
Optimal vicinity 2D median filter for fixed-point or floating-point values
(Pontificia Universidad Católica del PerúPE, 2024-06-19)Los filtros medianos son una técnica digital no lineal normalmente usada para remover ruido blanco, ’sal y pimienta’ de imágenes digitales. Consiste en reemplazar el valor de cada pixel por la mediana de los valores ... -
Robust Minimmun Variance Beamformer using Phase Aberration Correction Methods
(Pontificia Universidad Católica del PerúPE, 2017-04-28)The minimum variance (MV) beamformer is an adaptive beamforming method that has the potential to enhance the resolution and contrast of ultrasound images. Although the sensitivity of the MV beamformer to steering vector ... -
Separable dictionary learning for convolutional sparse coding via split updates
(Pontificia Universidad Católica del PerúPE, 2019-05-16)The increasing ubiquity of Convolutional Sparse Representation techniques for several image processing tasks (such as object recognition and classification, as well as image denoising) has recently sparked interest in ...