Search results for "Digital CA"

Robust technique for 3D shape reconstruction

2017

Abstract In this paper a robust and simple scheme is presented for three dimensional (3D) shape reconstruction of real object. A novel composite pattern technique is proposed for projecting the light pattern on the object of interest. The proposed scheme reduces the number of patterns by combining the primary color coded channels into one composite format. Our approach uses both spatial and temporal intensity variation for calibration and construction phase. Gamma calibration is considered with the propose scheme. High quality depth map is obtained from the linear light reflected by the shape of object without complex calculations. Experimental results demonstrated that proposed technique i…

Measuring CMCCON02 Color Inconstancy Index: use of Consumer Digital Camera as a Substitute for Reflectance Spectrophotometer

2019

El campo mediático-digital y la diferenciación social

2021

La digitalización de la sociedad ha abierto nuevos horizontes de investigación a la disciplina sociológica. Sin embargo, los análisis realizados en los últimos años tienden a dejar en un lugar secundario las referencias clásicas de la sociología. Este trabajo pretende mostrar la viabilidad del análisis de la cultura digital desde la perspectiva de los campos sociales de Pierre Bourdieu. Las herramientas teóricas y metodológicas que proporciona el autor francés pueden ser muy útiles para evitar tanto el utopismo digital como los análisis críticos influidos por perspectivas neomarxistas, centrados mayoritariamente en las formas de explotación económica. La teoría de los campos sociales puede …

SMART SfM: SALINAS ARCHAEOLOGICAL MUSEUM

2017

Abstract. In these last years, there has been an increasing use of the Structure from Motion (SfM) techniques applied to Cultural Heritage. The accessibility of SfM software can be especially advantageous to users in non-technical fields or to those with limited resources. Thanks to SfM using, everyone can make with a digital camera a 3D model applied to an object of both Cultural Heritage, and physically Environment, and work arts, etc. One very interesting and useful application can be envisioned into museum collection digitalization. In the last years, a social experiment has been conducted involving young generation to live a social museum using their own camera to take pictures and vid…

SNAPSHOT SPECTRAL AND COLOR IMAGING USING A REGULAR DIGITAL CAMERA WITH A MONOCHROMATIC IMAGE SENSOR

2017

Spectral imaging (SI) refers to the acquisition of the three-dimensional (3D) spectral cube of spatial and spectral data of a source object at a limited number of wavelengths in a given wavelength range. Snapshot spectral imaging (SSI) refers to the instantaneous acquisition (in a single shot) of the spectral cube, a process suitable for fast changing objects. Known SSI devices exhibit large total track length (TTL), weight and production costs and relatively low optical throughput. We present a simple SSI camera based on a regular digital camera with (i) an added diffusing and dispersing phase-only static optical element at the entrance pupil (diffuser) and (ii) tailored compressed sensing…

EXPERIMENTAL INVESTIGATION OF DILUTE SOLID-LIQUID SUSPENSION IN AN UNBAFFLED STIRRED VESSELS BY A NOVEL PULSED LASER BASED IMAGE ANALYSIS TECHNIQUE

2009

The availability of experimental information on solid distribution inside stirred tanks is a topic of great importance in several industrial applications. The measurement of solid particle distribution in turbulent multiphase flow is not simple and the development of suitable measurement techniques is still in progress. In this work a novel non-intrusive technique for measuring particle concentration fields in solid-liquid systems is employed. The technique makes use of a laser sheet, a high sensitivity digital camera for image acquisition and a Matlab procedure for post-processing the acquired images. Experimental data are here obtained for the case of an unbaffled stirred tank. Stable tor…

Snapshot Spectral Imaging

2018

This chapter describes an application of the spline-based wavelet frames to the spectral imaging. It presents a method that enables to convert a regular digital camera into a snapshot spectral imager by equipping the camera with a dispersive diffuser and with a compressed sensing-based algorithm for digital processing. The method relies on the assumption that typical images can be sparsely represented in the frame domain. The solution is found from the constrained \(l_{1}\) minimization of a functional by Bregman iterations. Results of optical experiments are reported. The chapter is based on the paper (Golub et al., Appl. Opt. 55, 432–443, (2016), [11]).

Biopsychosocial Profiles of Patients With Cardiac Disease in Remote Rehabilitation Processes : Mixed Methods Grounded Theory Approach

2021

Background: Digital development has caused rehabilitation services and rehabilitees to become increasingly interested in using technology as a part of rehabilitation. This study was based on a previously published study that categorized 4 groups of patients with cardiac disease based on different experiences and attitudes toward technology (e-usage groups): feeling outsider, being uninterested, reflecting benefit, and enthusiastic using. Objective: This study identifies differences in the biopsychosocial profiles of patients with cardiac disease in e-usage groups and deepen the understanding of these profiles in cardiac rehabilitation. Methods: Focus group interviews and measurements were c…

«“Isn’t It so Heartbreaking to See Our Loved Ones Decline Right before Our eyes”: Exploring Posts As Illness Stories».

2020

Set in the tradition of studies that look at digital interactions, this paper aims to explore the dimension of illness as referred to by informal caregivers in online exchanges. The research attempts to a) describe posts as mediated illness stories by comparing them to the storytelling in interaction model (Mishler), and b) explore what is revealed about the writer. A data set of 7371 posts (including sub-replies) has been studied as personal narratives in non-clinical therapeutic exchanges by means of Digital Conversation Analysis (Giles et al.), and investigated as written emotional disclosure (Pennebaker). Posts are found to convey explicit and implicit messages to be understood and inco…