Contrast (vision)

Contrast is the difference in luminance or colour that makes an object (or its representation in an image or display) distinguishable. In visual perception of the real world, contrast is determined by the difference in the color and brightness of the object and other objects within the same field of view. The human visual system is more sensitive to contrast than absolute luminance, we can perceive the world similarly regardless of the huge changes in illumination over the day or from place to place. The maximum contrast of an image is the contrast ratio or dynamic range.

Biological contrast sensitivity

The human contrast sensitivity function shows a typical band-pass filter shape peaking at around 4 cycles per degree with sensitivity dropping off either side of the peak. This tells us that the human visual system is most sensitive in detecting contrast differences occurring at 4 cycles per degree; i.e., at this spatial frequency humans can detect lower contrast differences than at any other angular frequency.

Vision statement

A vision statement is a declaration of an organization's objectives, ideally based on economic foresight, intended to guide its internal decision-making.

Definition and structure

A vision statement is a company's road map, indicating both what the company wants to become and guiding transformational initiatives by setting a defined direction for the company's growth. Vision statements undergo minimal revisions during the life of a business, unlike operational goals which may be updated from year-to-year. Vision statements can range in length from short sentences to multiple pages. Vision statements are also formally written and referenced in company documents rather than, for example, general principles informally articulated by senior management. A vision statement is not limited to business organizations and may also be used by non-profit or governmental entities.

A consensus does not exist on the characteristics of a "good" or "bad" vision statement. Commonly cited traits include:

Frank Duval

Frank Duval (born November 22, 1940, Berlin) is a German composer, conductor, record producer, songwriter and singer.

Born into an artists' family, he studied as an actor and dancer, but also sang with his sister, Maria. By the 1960s, Duval was also composing music, both orchestral and pop, and his first soundtrack, for an episode of the German serial Tatort, was broadcast in 1977. From his 1979 first album, Die Schönsten Melodien Aus Derrick und der Alte, the song "Todesengel" became a moderate hit.

During the 1980s, Duval released several soundtracks, as well as proper artist albums (with occasional lyrical help from his wife, Kalina Maloyer). He was in the German charts several times, with "Angel of Mine" (a number one hit in 1981), "Ways" (1983), "Lovers Will Survive" (1986), and "When You Were Mine" (1987).

Duval wrote songs for Ivan Rebroff, Alexandra, Karin Huebner, Margot Werner, Klaus Löwitsch, and Maria Schell.

Albums

Vision (Marvel Comics)

The Vision is the name of multiple fictional superheroes appearing in American comic books published by Marvel Comics. The first Vision was an alien created by Joe Simon and Jack Kirby that first appeared in Marvel Mystery Comics # 13 (November 1940). The second Vision is an android and a member of the Avengers that first appeared in The Avengers #57 (October 1968) by Roy Thomas, Stan Lee and John Buscema. The third Vision was the time traveler previously known as Iron Lad, who was fused with the operating system of the second Vision. The second Vision was portrayed by Paul Bettany in the 2015 film Avengers: Age of Ultron; he will reprise the role in the 2016 film Captain America: Civil War.

Publication history

The first Vision was created by the writer-artist team of Joe Simon and Jack Kirby in Marvel Mystery Comics #13 (Nov. 1940), published by Marvel predecessor Timely Comics during the 1930s and 1940s, a period which fans and historians call the Golden Age of Comic Books.

Contrast

Contrast may refer to:

Other uses

Companies and brands

See also

Contrast (video game)

Contrast is a puzzle-based platform style video game developed by Compulsion Games for Microsoft Windows, PlayStation 3, PlayStation 4, Xbox 360, and Xbox One.

Gameplay

The game is set in a noir atmosphere. The player must solve puzzles that require movement between the physical world, which is represented as 3D, and shadows, which are represented as 2D. The player may sometimes manipulate different light sources in the 3D world (spotlights, film projectors, etc.) to create the shadow paths that reach into new areas; "collectibles", available through game-play, offer insight into the game's characters and the world in which they live. The goal of the game is exploration and discovery through problem solving.

Dawn and Didi are the only two characters who appear as full 3D figures. The player controls Dawn, an imaginary friend, who is able to manifest as a three-dimensional shadow. Dawn is able to jump between two shadows, no matter how far apart they are. All other characters appear as shadows against the visual walls, but they still interact with the world as though they are "real."

Contrast (Signal Aout 42 album)

Contrast is the second album by the electronic body music group Signal Aout 42. It was recorded by Jacky Meurisse.

Track listing

All songs written by M. De San Antonio and Signal Aout 42.

CD Bonus Tracks