The Ultimate Guide to Computer Vision, Photogram.., 3D Vis..

SOME DEFINATIONS-: Computer Vision, Scientific Visualization, Architectural Rendering, Photogrammetry.

Computer Vision

computer vision, field of artificial intelligence in which programs attempt to identify objects represented in digitized images provided by cameras, thus enabling computers to “see.” Much work has been done on using deep learning and neural networks to help computers process visual information. Computers can be given a large data set of visual images and identify features and patterns within those images that the computers can then apply to other images.

Scientific Visualization

scientific visualization, process of graphically displaying real or simulated scientific data. It is a vital procedure in the creative realization of scientific ideas, particularly in computer science. Basic visualization techniques include surface rendering, volume rendering, and animation. High-performance workstations or supercomputers are used to show simulations, and high-level programming languages are being developed to support visualization programming. Scientific visualization has applications in biology, business, chemistry, computer science, education, engineering, and medicine.

Architectural Rendering

architectural rendering, branch of the pictorial arts and of architectural design whose special aim is to show, before buildings have been built, how they will look when completed. Modern renderings fall into two main categories: the quick perspective “design-study,” by which an architect records or develops his initial concept of a proposed building, and the carefully executed “presentation rendering,” which is a final design made for exhibition and publication.

In the 1st century bce, Roman architect and engineer Vitruvius referred to the use of architectural renderings in antiquity, although no examples have survived. Some architectural sketches in perspective do remain from the Middle Ages—e.g., the famous sketchbook of Villard de Honnecourt, a French master mason of the 13th century.

But architectural rendering as it is known today did not begin until the Renaissance, with such Italian architects as Filippo Brunelleschi, Leon Battista Alberti, Baldassarre Peruzzi, Donato Bramante, the Sangallos, Leonardo da Vinci, and Michelangelo.

In the 19th century the École des Beaux-Arts in Paris led in perfecting an academic type of rendering that involved the addition to carefully drawn plans and elevations of washes in monotone or colour, so applied as to elucidate and enhance the presentation. In the late 20th century, however, the production of these carefully hand-drawn images gave way to computer graphics that enabled highly sophisticated and realistic three-dimensional images.

Photogrammetry

photogrammetry, technique that uses photographs for mapmaking and surveying. As early as 1851 the French inventor Aimé Laussedat perceived the possibilities of the application of the newly invented camera to mapping, but it was not until 50 years later that the technique was successfully employed.

In the decade before World War I, terrestrial photogrammetry, as it came to be known later, was widely used; during the war the much more effective technique of aerial photogrammetry was introduced. Although aerial photogrammetry was used primarily for military purposes until the end of World War II, thereafter peacetime uses expanded enormously. Photography is today the principal method of making maps, especially of inaccessible areas, and is also heavily used in ecological studies and in forestry, among other uses.

From the air, large areas can be photographed quickly using special cameras, and blind areas, hidden from terrestrial cameras, are minimized. Each photograph is scaled, using marked and known ground reference points; thus, a mosaic can be constructed that may include thousands of photographs. Plotting machines and computers are used to overcome complications.

Instruments used in photogrammetry have become very sophisticated. Developments in the second half of the 20th century include satellite photography, very large scale photographs, automatic visual scanning, high-quality colour photographs, use of films sensitive to radiations beyond the visible spectrum, and numerical photogrammetry.

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