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.
Robotics
Robotics is an interdisciplinary branch of engineering and science that includes mechanical engineering, electronics engineering, computer science, and others. Robotics deals with the design, construction, operation, and use of robots, as well as computer systems for their control, sensory feedback, and information processing.
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.
Image
One picture in ten thousand, perhaps, ought to live in the applause of mankind, from generation to generation until the colors fade and blacken out of sight or the canvas rot entirely away.
Nathaniel Hawthorne, Marble Faun, Book II, Chapter XII. In Hoyt's New Cyclopedia Of Practical Quotations (1922), p. 576-77.
Image
Man makes god in his own image.
Frederick Nietzsche, in Ann Finnin The Forge of Tubal Cain, Pendraig Publishing, 2008, p. 128.
Image
Even when our death is imminent, we carry the image of ourselves moving forward, alive, into the future.
Dan Chaon, in Jilanne Hoffmann The Uncanny, Hope, and the Short Story, 15 October 2013.