Terrestrial photogrammetry is engaged in measurement, contour delineation or 3D reconstruction with photos captured by a camera located on the ground. Terrestrial photogrammetry has gained wide applications in many fields such as 3D building reconstruction, heritage protection and so on. In this paper, a new instrument named photo total station system has been adopted and meanwhile based on thi...

We investigate why it is that sharing digital photographs on the Internet is not as compelling as sharing photographs in a face-to-face environment. We discuss prototypes from both the author and viewer’s perspective, and report user test findings. We then discuss the growing importance of emotion in the computing experience.

Connecting people with technology is an important challenge in HCI and ubiquitous computing. Digital photo frames are a popular class of private situated displays particularly aimed at this purpose. However, their evaluation can be challenging as a significant amount of interaction takes place by looking at the device, i.e., without direct user input. In addition, a photo display can effect peo...

storage devices today, combined with the rapid expansion of broadband Internet connectivity, has given consumers more control over their digital photo collections than ever before. There’s virtually no limit to the amount of digital images we can keep and store on our PCs. As a result, the emerging challenge is searching through these digital image collections. With no information about the ima...

We introduce the concept of a “digital picture frame” that provides qualitative visualizations of everyday life activity. Leveraging a familiar household object, our design populates the digital frame with iconic imagery to depict current activity as well as long-term trends. In a final implementation, the digital picture frame would gather information from sensors in the home. To evaluate our ...

xContribuir para aumentar a qualidade de gestão, dentro do espírito consignado nas normas internacionais no domínio da Qualidade n o j p q r s t i O presente documento tem como objectivo dar a conhecer a Metodologia de Avaliação de InvestimentoS (MAIS), desen-volvida pelo Instituto de Informática, a implementar no âm-bito do Processo de Avaliação dos Investimentos em Siste-mas e Tecnologia de I...

Having digital literacy requires more than just the ability to use software or to operate a digital device; it includes a large variety of complex skills such as cognitive, motoric, sociological, and emotional that users need to have in order to use digital environments effectively. A conceptual model that was recently described by the authors suggests that digital literacy comprises five major...

This paper presents two highly integrated receiver circuits fabricated in InP heterojunction bipolar transistor (HBT) technology operating at up to 2.5 and 7.5 Gb/s, respectively. The first IC is a generic digital receiver circuit with CMOS-compatible outputs. It integrates monolithically an automatic-gain-control amplifier, a digital clock and data recovery circuit, and a 1 : 8 demultiplexer, ...