This paper presents an experimental assessment of photogrammetric targets and subpixel location techniques to be used with low contrast images such as images acquired by hyperspectral frame cameras. Eight different target ...

Cardiac magnetic resonance imaging (CMR) is an important tool for the non-invasive diagnosis of a variety of cardiovascular diseases. Parametric mapping with multi-contrast CMR is able to quantify tissue alterations in ...

Este documento se concentra en una aplicación para caracterización molecular de organismos, específicamente en lo referente al mejoramiento de la calidad de imágenes de geles de electroforesis. En general, las imágenes ...

This study performs an analysis on quality control in digital images through tests made with image plates (IPs) in the digital radiology sector using TOR CDR phantom. This phantom allows the evaluation of several parameters ...

In many countries, computed radiography (CR) systems represent the majority of equipments used in digital mammography. This study presents a method for optimizing image quality and dose in CR mammography of patients with ...

In this work, signal processing techniques are used to improve the quality of image based on multi-element synthetic aperture techniques. Using several apodization functions to obtain different side lobes distribution, a ...

Abstract. Contrast enhancement is an important task in image processing and it is commonly used as a preprocessing step in order to improve the results for other tasks such as segmentation. However, not only do some methods ...

The instantaneous frequency (IF) image is proposed in this work. It is obtained by the differentiation of the instantaneous phase (IP) image, which in turn is calculated by replacing the amplitude information with the IP ...

© 2018 IEEE. Dual-VENC strategies have been proposed to improve the velocity-to-noise ratio in phase-contrast MRI. However, they are based on aliasing-free high-VENC data. The aim of this paper is to propose a dual-VENC ...