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Texture Gradient
Texture gradient is the distortion in size which closer objects have compared to objects farther away. It also involves groups of objects appearing denser as they move farther away. Additionally, it could be explained by noticing a certain amount of detail depending on how close something is, giving a sense of depth perception. There are three main forms of texture gradient: density, perspective, and distortion of texture elements. Texture gradient is carefully used in the painting '' Paris Street, Rainy Day'' by Gustave Caillebotte. Texture gradient was used in a study of child psychology in 1976 and studied by Sidney Weinstein in 1957. In 2000, a paper about the texture gradient equation, wavelets, and shape from texture was released by Maureen Clerc and Stéphane Mallat. See also * Texture (visual arts) In the visual arts, texture is the perceived surface quality of a work of art. It is an element of two-dimensional and three-dimensional designs and is distinguished by it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gustave Caillebotte - Paris Street; Rainy Day - Google Art Project
Gustav, Gustaf or Gustave may refer to: *Gustav (name), a male given name of Old Swedish origin Art, entertainment, and media * ''Primeval'' (film), a 2007 American horror film * ''Gustav'' (film series), a Hungarian series of animated short cartoons * Gustav (''Zoids''), a transportation mecha in the ''Zoids'' fictional universe *Gustav, a character in ''Sesamstraße'' *Monsieur Gustav H., a leading character in ''The Grand Budapest Hotel'' Weapons *Carl Gustav recoilless rifle, dubbed "the Gustav" by US soldiers *Schwerer Gustav, 800-mm German siege cannon used during World War II Other uses *Gustav (pigeon), a pigeon of the RAF pigeon service in WWII *Gustave (crocodile), a large male Nile crocodile in Burundi *Gustave, South Dakota *Hurricane Gustav (other), a name used for several tropical cyclones and storms *Gustav, a streetwear clothing brand See also *Gustav of Sweden (other) *Gustav Adolf (other) *Gustave Eiffel (other) * * *Gustavo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Distortion
In signal processing, distortion is the alteration of the original shape (or other characteristic) of a signal. In communications and electronics it means the alteration of the waveform of an information-bearing signal, such as an audio signal representing sound or a video signal representing images, in an electronic device or communication channel. Distortion is usually unwanted, and so engineers strive to eliminate or minimize it. In some situations, however, distortion may be desirable. For example, in noise reduction systems like the Dolby system, an audio signal is deliberately distorted in ways that emphasize aspects of the signal that are subject to electrical noise, then it is symmetrically "undistorted" after passing through a noisy communication channel, reducing the noise in the received signal. Distortion is also used as a musical effect, particularly with electric guitars. The addition of noise or other outside signals (hum, interference) is not considered di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Complexity
Complexity characterises the behaviour of a system or model whose components interaction, interact in multiple ways and follow local rules, leading to nonlinearity, randomness, collective dynamics, hierarchy, and emergence. The term is generally used to characterize something with many parts where those parts interact with each other in multiple ways, culminating in a higher order of emergence greater than the sum of its parts. The study of these complex linkages at various scales is the main goal of complex systems theory. The intuitive criterion of complexity can be formulated as follows: a system would be more complex if more parts could be distinguished, and if more connections between them existed. Science takes a number of approaches to characterizing complexity; Zayed ''et al.'' reflect many of these. Neil F. Johnson, Neil Johnson states that "even among scientists, there is no unique definition of complexity – and the scientific notion has traditionally been conveyed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Depth Perception
Depth perception is the ability to perceive distance to objects in the world using the visual system and visual perception. It is a major factor in perceiving the world in three dimensions. Depth perception happens primarily due to stereopsis and accommodation of the eye. Depth sensation is the corresponding term for non-human animals, since although it is known that they can sense the distance of an object, it is not known whether they perceive it in the same way that humans do. Depth perception arises from a variety of depth cues. These are typically classified into binocular cues and monocular cues. Binocular cues are based on the receipt of sensory information in three dimensions from both eyes and monocular cues can be observed with just one eye. Binocular cues include retinal disparity, which exploits parallax and vergence. Stereopsis is made possible with binocular vision. Monocular cues include relative size (distant objects subtend smaller visual angles than near obj ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Density
Density (volumetric mass density or specific mass) is the substance's mass per unit of volume. The symbol most often used for density is ''ρ'' (the lower case Greek letter rho), although the Latin letter ''D'' can also be used. Mathematically, density is defined as mass divided by volume: : \rho = \frac where ''ρ'' is the density, ''m'' is the mass, and ''V'' is the volume. In some cases (for instance, in the United States oil and gas industry), density is loosely defined as its weight per unit volume, although this is scientifically inaccurate – this quantity is more specifically called specific weight. For a pure substance the density has the same numerical value as its mass concentration. Different materials usually have different densities, and density may be relevant to buoyancy, purity and packaging. Osmium and iridium are the densest known elements at standard conditions for temperature and pressure. To simplify comparisons of density across different s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perspective (visual)
Linear or point-projection perspective (from la, perspicere 'to see through') is one of two types of graphical projection perspective in the graphic arts; the other is parallel projection. Linear perspective is an approximate representation, generally on a flat surface, of an image as it is seen by the eye. Perspective drawing is useful for representing a three-dimensional scene in a two-dimensional medium, like paper. The most characteristic features of linear perspective are that objects appear smaller as their distance from the observer increases, and that they are subject to ''foreshortening'', meaning that an object's dimensions along the line of sight appear shorter than its dimensions across the line of sight. All objects will recede to points in the distance, usually along the horizon line, but also above and below the horizon line depending on the view used. Italian Renaissance painters and architects including Masaccio, Paolo Uccello, Piero della Francesca and Luca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Distortion (optics)
In geometric optics, distortion is a deviation from rectilinear projection; a projection in which straight lines in a scene remain straight in an image. It is a form of aberration in optical systems, optical aberration. Radial distortion Although distortion can be irregular or follow many patterns, the most commonly encountered distortions are radially symmetric, or approximately so, arising from the symmetry of a photographic lens. These ''radial distortions'' can usually be classified as either ''barrel'' distortions or ''pincushion'' distortions. Mathematically, barrel and pincushion distortion are quadratic function, quadratic, meaning they increase as the ''square'' of distance from the center. In mustache distortion the quartic function, quartic (degree 4) term is significant: in the center, the degree 2 barrel distortion is dominant, while at the edge the degree 4 distortion in the pincushion direction dominates. Other distortions are in principle possible ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Texture
Texture may refer to: Science and technology * Surface texture, the texture means smoothness, roughness, or bumpiness of the surface of an object * Texture (roads), road surface characteristics with waves shorter than road roughness * Texture (cosmology), a theoretical topological defect in the structure of spacetime * Texture (crystalline), material's individual crystallites sharing some degree of orientation * Texture (geology), a physical appearance or character of a rock * Texture mapping, a bitmap image applied to a surface in computer graphics * Soil texture, a relative proportion of grain sizes of a soil * Scalar field Arts * Texture (visual arts), an element of design and its application in art Music * Texture (music), an overall sound created by the interaction of aspects of a piece of music * ''Textures'' (album), a 1989 album by Brian Eno * Textures (band), a metal band from the Netherlands, who formed in 2001 in Tilburg Other uses * Texture (app), a digital app giv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paris Street, Rainy Day
''Paris Street; Rainy Day'' (french: Rue de Paris, temps de pluie) is a large 1877 oil painting by the French artist Gustave Caillebotte (1848–1894), and is his best known work.Hagen, 624 It shows a number of individuals walking through the Place de Dublin, then known as the Carrefour de Moscou, at an intersection to the east of the Gare Saint-Lazare in north Paris. Although Caillebotte was a friend and patron of many of the impressionist painters, and this work is part of that school, it differs in its realism and reliance on line rather than broad brush strokes. Caillebotte's interest in photography is evident. The figures in the foreground appear "out of focus", those in the mid-distance (the carriage and the pedestrians in the intersection) have sharp edges, while the features in the background become progressively indistinct. The severe cropping of some figures – particularly the man to the far right – further suggests the influence of photography. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gustave Caillebotte
Gustave Caillebotte (; 19 August 1848 – 21 February 1894) was a French painter who was a member and patron of the Impressionists, although he painted in a more realistic manner than many others in the group. Caillebotte was known for his early interest in photography as an art form. Early life Gustave Caillebotte was born on 19 August 1848 to an upper-class Parisian family living in the rue du Faubourg-Saint-Denis. His father, Martial Caillebotte (1799–1874), was the inheritor of the family's military textile business and was also a judge at the Tribunal de commerce de la Seine. Caillebotte's father was twice widowed before marrying Caillebotte's mother, Céleste Daufresne (1819–1878), who had two more sons after Gustave: René (1851–1876) and Martial (1853–1910). Caillebotte was born at home on rue du Faubourg-Saint-Denis in Paris and lived there until 1866, when his father had a home built on 77 rue de Miromesnil. Beginning in 1860, the Caillebotte family began regul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wavelet
A wavelet is a wave-like oscillation with an amplitude that begins at zero, increases or decreases, and then returns to zero one or more times. Wavelets are termed a "brief oscillation". A taxonomy of wavelets has been established, based on the number and direction of its pulses. Wavelets are imbued with specific properties that make them useful for signal processing. For example, a wavelet could be created to have a frequency of Middle C and a short duration of roughly one tenth of a second. If this wavelet were to be convolved with a signal created from the recording of a melody, then the resulting signal would be useful for determining when the Middle C note appeared in the song. Mathematically, a wavelet correlates with a signal if a portion of the signal is similar. Correlation is at the core of many practical wavelet applications. As a mathematical tool, wavelets can be used to extract information from many different kinds of data, including but not limited to au ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maureen Clerc
Maureen is a female given name. In Gaelic, it is Máirín, a pet form of ''Máire'' (the Irish cognate of Mary), which is derived from the Hebrew Miriam. The name has sometimes been regarded as corresponding to the male given name Maurice. Some notable bearers of the name are: People * Maureen Anderman (born 1946), American actress * Dame Maureen Brennan (born 1954), British educator * Maureen Connolly (1934–1969), American tennis player * Maureen Dowd (born 1952), American journalist * Maureen Drake (born 1971), Canadian tennis player * Maureen Duffy (born 1933), British writer * Maureen Forrester (1930–2010), Canadian opera singer * Maureen Guy (1932–2015), Welsh mezzo-soprano singer * Maureen Herman (born 1966), American rock musician * Maureen Hingert (born 1937), Sri Lankan dancer, model, and actress * Maureen Hunter (born 1948), Canadian playwright * Maureen Johnson (born 1973), American writer * Dame Maureen Lipman (born 1946), British actress * Maureen Louys (born ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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