blur circle

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• blur circle — noun : circle of confusion …   Useful english dictionary

• Circle of confusion — For the closely related topic in microscopy, see Point spread function. In optics, a circle of confusion is an optical spot caused by a cone of light rays from a lens not coming to a perfect focus when imaging a point source. It is also known as… …   Wikipedia

• circle of confusion — the indistinct circular patch formed by a lens representing the out of focus image of a single object point called also blur circle; compare circle of least confusion * * * Photog. a circular spot on a film, resulting from the degree to which a… …   Useful english dictionary

• Gaussian blur — Gaussian blur, named for Carl Friedrich Gauss, describes blurring an image by a Gaussian function. It is a widely used effect in graphics software, typically to reduce image noise and reduce detail. The visual effect of this blurring technique is …   Wikipedia

• Magic Circle (virtual worlds) — Early virtual world: Ultima Online In regard to digital media, the term “magic circle” refers to the membrane that encloses virtual worlds such as first person shooters (FPSs), online social environments, and massively multiplayer online role… …   Wikipedia

• Magic Circle (synthetic worlds) — In regard to digital media, the term “magic circle” refers to the membrane that encloses synthetic worlds such as first person shooters (FPSs), online social environments, and massively multiplayer online role playing games (MMORPGs). As noted by …   Wikipedia

• Focus (optics) — An image that is partially in focus, but mostly out of focus in varying degrees. In geometrical optics, a focus, also called an image point, is the point where light rays originating from a point on the object converge.[1] Although the focus is… …   Wikipedia

• eye, human — ▪ anatomy Introduction  specialized sense organ capable of receiving visual images, which are then carried to the brain. Anatomy of the visual apparatus Structures auxiliary to the eye The orbit       The eye is protected from mechanical injury… …   Universalium

• Myopia — For other uses, see Myopia (disambiguation). Myopia Classification and external resources ICD 10 H …   Wikipedia

• Depth of field — The area within the depth of field appears sharp, while the areas in front of and beyond the depth of field appear blurry …   Wikipedia

• performing arts — arts or skills that require public performance, as acting, singing, or dancing. [1945 50] * * * ▪ 2009 Introduction Music Classical.       The last vestiges of the Cold War seemed to thaw for a moment on Feb. 26, 2008, when the unfamiliar strains …   Universalium