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Encyclopedia > Digital imaging

Digital imaging or digital image acquisition is the creation of digital images, typically from a physical object. The term is often assumed to imply or include the processing, compression, storage, printing, and display of such images. A digital image is a representation of a two-dimensional image as a finite set of digital values, called picture elements or pixels. ... Digital image processing is the use of computer algorithms to perform image processing on digital images. ... Image compression is the application of data compression on digital images. ... See also Category:Graphics file formats Here is a summary of the most common graphics file formats: Some file formats, e. ... Digital printing is the reproduction of digital images on physical surface, such as common or photographic paper, film, cloth, plastic, etc. ... Only meanings of encyclopedic scope are listed here for disambiguation purposes. ...


A digital image may be created directly from a physical scene by a camera or similar device. Alternatively, it may be obtained from another image in an analog medium, such as photographs, photographic film, or printed paper, by a scanner or similar device. Many technical images—such as those acquired with tomographic equipment, side-looking radar, or radio telescopes—are actually obtained by complex processing of non-image data. Finally, a digital image can also be computed from a geometric model or mathematical formula (however, in this case the name image synthesis is more appropriate). This article or section does not cite its references or sources. ... In common usage, an image (from Latin imago) or picture is an artifact that reproduces the likeness of some subject—usually a physical object or a person. ... An analog or analogue signal is any continuously variable signal. ... A sepia-toned photograph taken in England in 1895 U.S. Marines raising the flag on Iwo Jima, February 23, 1945 Peter Leibings photograph of Conrad Schumann leaping over barbed wire into West Berlin on August 15, 1961 Buzz Aldrin salutes the US flag on the surface of the... This article or section does not cite its references or sources. ... For other articles which might have the same name, see Print (disambiguation). ... In computing, a scanner is a device that analyzes an image (such as a photograph, printed text, or handwriting) or an object (such as an ornament) and converts it to a digital image. ... Tomography is imaging by sections or sectioning. ... The 64 meter radio telescope at Parkes Observatory A radio telescope is a form of radio receiver used in astronomy. ... A geometric model describes the shape of a physical or mathematical object by means of geometric concepts. ...


Digital image authentication is an emerging issue for the providers and producers of high resolution digital images such as health care organizations, law enforcement agencies and insurance companies. There is currently no method available to analyze a digital image and determine if it has been altered or not. However, there are some technologies on the horizon which are useful in confirming the non-alteration of images whose original producer is known. Health care or healthcare is the prevention, treatment, and management of illness and the preservation of mental and physical well-being through the services offered by the medical, nursing, and allied health professions. ... For the band, see The Police. ... Insurance, in law and economics, is a form of risk management primarily used to hedge against the risk of a contingent loss. ... Corporate redirects here. ...


Software

Although there are many available, Adobe Photoshop is one of the most famous tools for digital imaging and is used by many professionals. These programs can be used to create new images and edit existing ones. Photoshop redirects here. ...


Brought to you by Pinecrest's TechDads Series: Some great freeware also exists that you can use to manage your digital images. Here is a recommended list by an experienced user.


http://www.xnview.com


http://www.free-software-space.com/irfanview/


http://www.acdsee.com


http://picasa.google.com/


See also

// Introduction to digital image editing Digital image editing is done with computer programs called image editors to manipulate, enhance, and transform images. ... Digital image processing is the use of computer algorithms to perform image processing on digital images. ... Dynamic imaging is the amalgamation of digital imaging and workflow automation. ... An image retrieval system is a computer system for browsing, searching and retrieving images from a large database of digital images. ... It has been suggested that this article or section be merged into Comparison of graphics file formats. ... This article is being considered for deletion in accordance with Wikipedias deletion policy. ... The Society for Imaging Science and Technology (IS&T) is a research and education organization in the field of imaging. ... The Society for Imaging Science and Technology (IS&T) is a research and education organization in the field of imaging. ... Arschloch The simplest film recorders typically work by displaying the image on a grayscale cathode ray tube (CRT) placed in front of a photographic camera. ...

External links


  Results from FactBites:
 
Digital imaging - definition of Digital imaging in Encyclopedia (167 words)
Digital imaging or digital image acquisition is the creation of digital images, typically from a physical object.
A digital image may be created directly from a physical scene by a camera or similar device.
Finally, a digital image can also be computed from a geometric model or mathematical formula (however, in this case the name image synthesis is more appropriate).
Olympus Microscopy Resource Center: Digital Imaging in Optical Microscopy (1175 words)
Digitization of a video or electronic image captured through an optical microscope results in a dramatic increase in the ability to enhance features, extract information, or modify the image.
When compared to the traditional mechanism of image capture, photomicrography on film, digital imaging and post-acquisition processing enables a reversible, essentially noise-free modification of the image as an ordered matrix of integers rather than a series of analog variations in color and intensity.
Basic Properties of Digital Images - Continuous-tone images are produced by analog optical and electronic devices, which accurately record image data by several methods, such as a sequence of electrical signal fluctuations or changes in the chemical nature of a film emulsion that vary continuously over all dimensions of the image.
  More results at FactBites »

 
 

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