Image
An image (from Latin: imago) is an artifact that depicts visual perception, for example, a photo or a two-dimensional picture, that has a similar appearance to some subject—usually a physical object or a person, thus providing a depiction of it.
Signal
A signal as referred to in communication systems, signal processing, and electrical engineering is a function that "conveys information about the behavior or attributes of some phenomenon". In the physical world, any quantity exhibiting variation in time or variation in space (such as an image) is potentially a signal that might provide information on the status of a physical system, or convey a message between observers, among other possibilities. The IEEE Transactions on Signal Processing states that the term "signal" includes audio, video, speech, image, communication, geophysical, sonar, radar, medical and musical signals.
Signal Processing
Signal processing concerns the analysis, synthesis, and modification of signals, which are broadly defined as functions conveying "information about the behavior or attributes of some phenomenon", such as sound, images, and biological measurements. For example, signal processing techniques are used to improve signal transmission fidelity, storage efficiency, and subjective quality, and to emphasize or detect components of interest in a measured signal.
Video
Video is an electronic medium for the recording, copying, playback, broadcasting, and display of moving visual media.
Video
For all the power of video and film, I am not giving up my pen. I am just much more likely to try to link essays to webcasts or videos. The best way for these two media to move forward, to inform and make change, is in tandem; together they are more than the sum of their parts.
Naomi Wolf, "Smugglers of truth," The Guardian, 19 January 2009.
Image
His own image; no longer a dark, gray bird, ugly and disagreeable to look at, but a graceful and beautiful swan. To be born in a duck's nest, in a farmyard, is of no consequence to a bird, if it is hatched from a swan's egg.
Hans Christian Andersen, The Ugly Duckling & Other Tales, Interactive Media, 15 October 2012, p. 14.
Image
When the crucified Jesus is called the 'image of the invisible God', the meaning is that this is God, and God is like this.
David Lauber, Barth on the Descent Into Hell: God, Atonement and the Christian Life, Ashgate, 2004, p. 114.
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