A Construction of the Total Spherical Perspective in Ruler, Compass and Nail

We obtain a construction of the total spherical perspective with ruler, compass, and nail. This is a generalization of the spherical perspective of Barre and Flocon to a 360 degree field of view. Since the 1960s, several generalizations of this perspective have been proposed, but they were either works of a computational nature, inadequate for drawing with simple instruments, or lacked a general method for solving all vanishing points. We establish a general setup for anamorphosis and central perspective, define the total spherical perspective within this framework, study its topology, and show how to solve it with simple instruments. We consider its uses both in freehand drawing and in computer visualization, and its relation with the problem of reflection on a sphere.Comment: Major revision of the 2015 version, with many changes, including and a new title. Main results unaltered, but important changes to the definitions, to notation and organization, and correction of minor errors. Illustrations revised/added, including a major illustration of spherical perspective on page 22. Added references to several works previously unknown. 25 pages, 12 figure

CONNECTING INSIDE AND OUTSIDE THROUGH 360° IMAGERY FOR CLOSE-RANGE PHOTOGRAMMETRY

Abstract. Metric documentation of buildings requires the connection of different spaces, such as rooms, corridors, floors, and interior and exterior spaces. Images and laser scans have to be oriented and registered to obtain accurate metric data about different areas and the related metric information (e.g., wall thickness). A robust registration can be obtained with total station measurements, especially when a geodetic network with multiple intersections on different station points is available. In the case of a photogrammetric project with several images acquired with a central perspective camera, the lack of total station measurements (i.e., control and check points) could result in a weak orientation for the limited overlap between images acquired through doors and windows. The procedure presented in this paper is based on 360&amp;deg; images acquired with an affordable digital camera (less than 350$). The large field of view of 360&amp;deg; images allows one to simultaneously capture different rooms as well as indoor and outdoor spaces, which will be visible in just a picture. This could provide a more robust orientation of multiple images acquired through narrow spaces. A combined bundle block adjustment that integrates central perspective and spherical images is here proposed and discussed. Additional considerations on the integration of fisheye images are discussed as well.</p

Conceptualisation of the spiritual life dimension: a personal and professional leadership perspective.

The focus of this article is a conceptualisation of the spiritual life dimension of the human being. The central perspective or approach is the Personal, Interpersonal and Professional Leadership (PiPL) perspective developed by Smith. PiPL is a holistic wellness perspective that includes the personal, interpersonal and professional contexts of the individual’s life, and considers the anthropological characteristics, existential realities and phenomenology that humankind is faced with. PiPL views the spiritual life dimension as the core of being human. In this article Smith’s PiPL perspective of the nature and manifestations of the spiritual life dimension in the existential world will be explored

Fisheye Photogrammetry to Survey Narrow Spaces in Architecture and a Hypogea Environment

Nowadays, the increasing computation power of commercial grade processors has actively led to a vast spreading of image-based reconstruction software as well as its application in different disciplines. As a result, new frontiers regarding the use of photogrammetry in a vast range of investigation activities are being explored. This paper investigates the implementation of fisheye lenses in non-classical survey activities along with the related problematics. Fisheye lenses are outstanding because of their large field of view. This characteristic alone can be a game changer in reducing the amount of data required, thus speeding up the photogrammetric process when needed. Although they come at a cost, field of view (FOV), speed and manoeuvrability are key to the success of those optics as shown by two of the presented case studies: the survey of a very narrow spiral staircase located in the Duomo di Milano and the survey of a very narrow hypogea structure in Rome. A third case study, which deals with low-cost sensors, shows the metric evaluation of a commercial spherical camera equipped with fisheye lenses

European Elections as Counterfactual National Elections

European Parliament elections affect a supra-national, European body. Nevertheless their outcomes are often interpreted as if they were national elections, with repercussion in the national political arena. Such a counterfactual representation, in which European parliamentary elections are presented as national parliamentary elections, forms the central perspective of this chapter. We model the influences of variations in turnout and variations in determinants of party choice for European Parliament and National Parliament elections, to determine what party characteristics influence the relative success or failure of political parties at European elections. The outcomes show that European electoral success is not only determined by party characteristics alone, but is also dependent upon the cycle of elections in the different countries

Elements of interior architectural design against stylish approaches

The importance of this book is related to different reasons. Firstly it deals with interior architectural design that is a key topic in architectural practice even if it is a neglected subject in most schools of architecture nowadays as “interior design is often misunderstood as only a kind of decoration”.[1] On the contrary, as Prof. Chen Yi states, “we believe that interior design and architectural design were indistinguishable since the beginning of the civilization”.[2] As a matter of fact interior space is “the space enclosed by walls, wherever they are arranged or configured. It is primary and characterizing of every architectural work, it is addressed to the fruition by whom it is going through, crossing or stopping; […] it has a meaning clearly distinct from that of the other figurative arts…”.[3] Moreove