Este artículo proporciona una descripción detallada del programa de formación desarrollado por el Illinois Digitization Institute denominado Basics and Beyond. La idea de este programa es ofrecer a las instituciones que conservan materiales del patrimonio cultural, la posibilidad de acceder a diferentes modalidades de formación en digitalización de diversos precios y horas lectivas. La primera ...

In this paper, we consider the problem of computing the length of a curve from digitized versions of the curve using parallel computation. Our aim is to study the inherent parallel computational complexity of this problem as a function of the digitization level. Precise formulations for the digitization, the parallel computation, and notions of local and nonlocal computations are given. We show...

The digitization of durable goods gives firms the ability to monetize and update already purchased products, shifting firms’ focus from pushing consumers toward buying replacement products to locking in consumers through incremental updates. As a first step in understanding the effects of digitization, I investigate consumers’ preferences for product updates in Apple’s app ecosystem. Using a de...

This paper addresses the problem of improving the spurious free dynamic range (SFDR) for digitization by use of antenna arrays. Nonlinearities in the analog-to-digital conversion process give rise to spurious signals (harmonics and intermodulation products) that limit the overall SFDR of the digitization process. When the signal of interest arises from a sensor such as an antenna or hydrophone,...

Preliminary notes Capturing of 3D information about any kind of surface is currently a big challenge. A few proven commercial techniques and technologies are in use for a couple of years, but needed hardware and software are still too expensive for ordinary users of PC. This article provides a few cheaper alternatives based on open source elements to commercial non-contact 3D scanners and prove...

­ We propose one geometric algorithm to solve both the problem of circularity test and the problem of circularity measure. The former problem consists in deciding whether a given digital curve is a digitization of a circle or not, whereas the latter problem consists in measuring how far a given digital curve is from a digitization of a circle. Our new circularity measure fulfills basic invarian...

This paper presents a new digitizing technique which integrates computer vision methods, such as the ’ photometric stereo approach, with the laser displacement sensors (LDS). The curvature at each point of the surface can be measured cost-effectively by the photometric stereo approach. Once the information of curvature of the surface is provided, the measuring speed of LDS can be improved by di...

The goal of this work is to develop a complete and automatic scanning system with minimum prior information. We aim to establish a methodology for the automation of the 3D digitization process. The paper presents a method based on the evolution of the Bounding Box of the object during the acquisition. The registration of the data is improved through the modeling of the positioning system. The o...

Discrete geometric estimators aim at estimating geometric characteristics of a shape with only its digitization as input data. Such an estimator is multigrid convergent when its estimates tend toward the geometric characteristics of the shape as the digitization step h tends toward 0. This paper studies the multigrid convergence of tangent estimators based on maximal digital straight segment re...