Digital imaging or digital image acquisition is the creation of digital images, typically from a physical object. A digital image is a representation of a two-dimensional Image using ones and zeros (binary The term is often assumed to imply or include the processing, compression, storage, printing, and display of such images. Digital image processing is the use of computer Algorithms to perform Image processing on Digital images As a subfield of Digital signal processing Image compression is the application of Data compression on Digital images In effect the objective is to reduce redundancy of the image data in order to be able to This is a comparison of Image file formats. General Ownership of the format and related information Digital printing is the reproduction of Digital images on a physical surface
A digital image may be created directly from a physical scene by a camera or similar devices. Many compact digital still cameras can record Sound and moving Video as well as still Photograph. 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. An image (from Latin imago) or picture is an artifact usually two-dimensional that has a similar appearance to some subject &mdashusually An analog or analogue signal is any continuous signal for which the time varying feature (variable of the signal is a representation of some other A photograph (often shortened to photo) is an Image created by Light falling on a light-sensitive surface usually Photographic film or an electronic This article is mainly concerned with Still photography film For Motion picture film please see Film stock. Printing is a process for reproducing text and image typically with ink on Paper using a printing press Historical precedent Scanners can be considered the successors of early telephotography input devices consisting of a rotating drum with a single Photodetector at 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. Tomography is imaging by sections or sectioning A device used in tomography is called a tomograph, while the image produced is a tomogram. A radio telescope is a form of directional Radio antenna used in Radio astronomy and in tracking and collecting data from Satellites 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). Geometric model(ling is the construction or use of geometric models
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 are methods emerging to analyze a digital image and determine if it has been altered or not.
See also
- Digital image processing
- Dynamic imaging
- Image editing
- Image retrieval
- Graphics file format
- Graphic image development
- Society for Imaging Science and Technology, (IS&T)
- Film recorder
External links
- Cornell University. Digital image processing is the use of computer Algorithms to perform Image processing on Digital images As a subfield of Digital signal processing Dynamic imaging is the amalgamation of Digital imaging and Workflow automation. Image editing encompasses the processes of altering Images whether they be digital photographs traditional analog photographs or Illustrations An image retrieval system is a computer system for browsing searching and retrieving images from a large Database of Digital images Most traditional and common methods Image file formats are standardized means of organising and storing images Term Scope Image development is essentially Visual art usually for commercial purposes, but includes techniques not considered Fine art or The Society for Imaging Science and Technology ( IS&T) is a Research and Education organization in the field of Imaging. A Film Recorder is a Graphical output device for transferring Digital images to Photographic film. Digital imaging tutorial
- Dartmouth, Hany Farid. Digital Image Forensics
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