3D scanner in the context of "Pelourinho"

Surveying or land surveying is the technique, profession, art, and science of determining the terrestrial positions of points based on the distances and angles between them. These points are usually on the surface of the Earth, and they are often used to establish maps and boundaries for ownership, locations, such as the designated positions of structural components for construction or the surface location of subsurface features, or other purposes required by government or civil law, such as property sales.

A professional in land surveying is called a land surveyor.Surveyors work with elements of geodesy, geometry, trigonometry, regression analysis, physics, engineering, metrology, programming languages, and the law. They use equipment, such as total stations, robotic total stations, theodolites, GNSS receivers, retroreflectors, 3D scanners, lidar sensors, radios, inclinometer, handheld tablets, optical and digital levels, subsurface locators, drones, GIS, and surveying software.

The Historic Center (US) or Centre (UK) (Portuguese: Centro Histórico) of Salvador de Bahia in Brazil, also known as the Pelourinho (Portuguese for "Pillory") or Pelo, is a historic neighborhood in western Salvador, Bahia. It was the city's center during the Portuguese colonial period and was named for the whipping post in its central plaza where enslaved people from Africa were publicly beaten as punishment for alleged infractions. The Historic Center is extremely rich in historical monuments dating from the 17th through the 19th centuries.

Designated a UNESCO World Heritage Site, the Pelourinho retains a vibrant repertoire of colonial Portuguese architecture, exemplified by the Mannerist decoration of the Cathedral of Salvador, the Baroque intricacy of the Church and Convent of São Francisco and the Church of the Third Order of Our Lady of the Rosary of the Black People. In addition, the Pelourinho remains a cultural hub for the Afro-Brazilian community, whose cuisine, architecture, religion and music exert a salient influence on the neighborhood and testify to the "empowerment and influence of Afro cultures" in the New World. Although historical preservation efforts initiated in the 1990s enhanced safety, promoted tourism and facilitated greater economic development, they also resulted in the dislocation of Afro-Brazilian residents in the enclave and contributed to gentrification. As such, the development of the Pelourinho continues to attract attention in the gubernatorial politics of Bahia.

A hypogeum or hypogaeum (/ˌhaɪpəˈdʒiːəm/ HY-pə-JEE-əm; plural hypogea or hypogaea; literally meaning "underground") is an underground temple or tomb.

Hypogea will often contain niches for cremated human remains or loculi for buried remains. Occasionally tombs of this type are referred to as built tombs.

A point cloud is a discrete set of data points in space. The points may represent a 3D shape or object. Each point position has its set of Cartesian coordinates (X, Y, Z). Points may contain data other than position such as RGB colors, normals, timestamps and others. Point clouds are generally produced by 3D scanners or by photogrammetry software, which measure many points on the external surfaces of objects around them. As the output of 3D scanning processes, point clouds are used for many purposes, including to create 3D computer-aided design (CAD) or geographic information systems (GIS) models for manufactured parts, for metrology and quality inspection, and for a multitude of visualizing, animating, rendering, and mass customization applications.

An inspection is, most generally, an organized examination or formal evaluation exercise. In engineering activities inspection involves the measurements, tests, and gauges applied to certain characteristics in regard to an object or activity. The results are usually compared to specified requirements and standards for determining whether the item or activity is in line with these targets, often with a Standard Inspection Procedure in place to ensure consistent checking. Inspections are usually non-destructive.

Inspections may be a visual inspection or involve sensing technologies such as ultrasonic testing, accomplished with a direct physical presence or remotely such as a remote visual inspection, and manually or automatically such as an automated optical inspection. Non-contact optical measurement and photogrammetry have become common NDT methods for inspection of manufactured components and design optimisation.