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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.
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 optical aberration that may be distinguished from other aberrations such as spherical aberration, coma, chromatic aberration, field curvature, and astigmatism in a sense that these impact the image sharpness without changing an ...
Distortion refers to any change in an object's or region's location on an aerial photo that modifies its original features and shapes. [2] It usually appears near the picture's border. [2] There are two causes of distortion. The first one is the tilt and tip of a plane. [4] When the aircraft is rising or descending it produces a tip. [4]
Historical negationism, [1] [2] also called historical denialism, is falsification [3] [4] or distortion of the historical record. This is not the same as historical revisionism, a broader term that extends to newly evidenced, fairly reasoned academic reinterpretations of history. [5]
The term illusion refers to a specific form of sensory distortion. Unlike a hallucination, which is a distortion in the absence of a stimulus, an illusion describes a misinterpretation of a true sensation. For example, hearing voices regardless of the environment would be a hallucination, whereas hearing voices in the sound of running water (or ...
In photography and cinematography, perspective distortion is a warping or transformation of an object and its surrounding area that differs significantly from what the object would look like with a normal focal length, due to the relative scale of nearby and distant features.
CBS argued that the news distortion complaint should be dismissed, saying the U.S. Supreme Court has never 'recognized a sweeping right by the government to second guess editorial decision-making.'
In mathematics, the distortion is a measure of the amount by which a function from the Euclidean plane to itself distorts circles to ellipses. If the distortion of a function is equal to one, then it is conformal; if the distortion is bounded and the function is a homeomorphism, then it is quasiconformal. The distortion of a function ƒ of the ...