Global illuminationGlobal illumination (GI), or indirect illumination, is a group of algorithms used in 3D computer graphics that are meant to add more realistic lighting to 3D scenes. Such algorithms take into account not only the light that comes directly from a light source (direct illumination), but also subsequent cases in which light rays from the same source are reflected by other surfaces in the scene, whether reflective or not (indirect illumination).
Western literatureWestern literature, also known as European literature, is the literature written in the context of Western culture in the languages of Europe, and is shaped by the periods in which they were conceived, with each period containing prominent western authors, poets, and pieces of literature. The best of Western literature is considered to be the Western canon. The list of works in the Western canon varies according to the critic's opinions on Western culture and the relative importance of its defining characteristics.
Digital imagingDigital imaging or digital image acquisition is the creation of a digital representation of the visual characteristics of an object, such as a physical scene or the interior structure of an object. The term is often assumed to imply or include the , , , printing and display of such images. A key advantage of a , versus an analog image such as a film photograph, is the ability to digitally propagate copies of the original subject indefinitely without any loss of image quality.
British literatureBritish literature is literature from the United Kingdom of Great Britain and Northern Ireland, the Isle of Man, and the Channel Islands. This article covers British literature in the English language. Anglo-Saxon (Old English) literature is included, and there is some discussion of Latin and Anglo-Norman literature, where literature in these languages relate to the early development of the English language and literature. There is also some brief discussion of major figures who wrote in Scots, but the main discussion is in the various Scottish literature articles.
Indian literatureIndian literature refers to the literature produced on the Indian subcontinent until 1947 and in the Republic of India thereafter. The Republic of India has 22 officially recognised languages. The earliest works of Indian literature were orally transmitted. Sanskrit literature begins with the oral literature of the Rig Veda, a collection of literature dating to the period 1500–1200 BCE. The Sanskrit epics Ramayana and Mahabharata were subsequently codified and appeared towards the end of the 2nd millennium BCE.
Newton's methodIn numerical analysis, Newton's method, also known as the Newton–Raphson method, named after Isaac Newton and Joseph Raphson, is a root-finding algorithm which produces successively better approximations to the roots (or zeroes) of a real-valued function. The most basic version starts with a single-variable function f defined for a real variable x, the function's derivative f′, and an initial guess x0 for a root of f. If the function satisfies sufficient assumptions and the initial guess is close, then is a better approximation of the root than x0.
Statistical modelA statistical model is a mathematical model that embodies a set of statistical assumptions concerning the generation of sample data (and similar data from a larger population). A statistical model represents, often in considerably idealized form, the data-generating process. When referring specifically to probabilities, the corresponding term is probabilistic model. A statistical model is usually specified as a mathematical relationship between one or more random variables and other non-random variables.
Scientific modellingScientific modelling is a scientific activity, the aim of which is to make a particular part or feature of the world easier to understand, define, quantify, visualize, or simulate by referencing it to existing and usually commonly accepted knowledge. It requires selecting and identifying relevant aspects of a situation in the real world and then developing a model to replicate a system with those features.
Economic modelIn economics, a model is a theoretical construct representing economic processes by a set of variables and a set of logical and/or quantitative relationships between them. The economic model is a simplified, often mathematical, framework designed to illustrate complex processes. Frequently, economic models posit structural parameters. A model may have various exogenous variables, and those variables may change to create various responses by economic variables.
Book scanningBook scanning or book digitization (also: magazine scanning or magazine digitization) is the process of converting physical books and magazines into digital media such as , electronic text, or electronic books (e-books) by using an . Large scale book scanning projects have made many books available online. Digital books can be easily distributed, reproduced, and read on-screen. Common file formats are DjVu, Portable Document Format (PDF), and (TIFF).
