Pixel
Pixel
Pixel (pronounced: /ˈpɪksəl/), is a term derived from the words "picture" and "element". It is the smallest unit of a digital image or graphic that can be displayed and manipulated on a digital display device.
Etymology
The term "pixel" was first published in 1965 by Frederic C. Billingsley of JPL, to describe the picture elements of video images from space probes to the Moon and Mars. However, Billingsley did not coin the term himself. Instead, he got the word "pixel" from Keith E. McFarland, at the Link Division of General Precision in Palo Alto, who did not know where the word originated. McFarland said simply it was "in use at the time" (circa 1963).
Related Terms
- Bitmap: A type of memory organization or image file format used to store digital images.
- Raster Graphics: A type of digital image that uses tiny rectangular pixels, or picture elements, arranged in a grid.
- Vector Graphics: The use of polygons to represent images in computer graphics.
- Resolution: The detail an image holds. The term applies to raster digital images, film images, and other types of images.
- Image Sensor: A sensor that detects and conveys information used to make an image.
See Also
External links
- Medical encyclopedia article on Pixel
- Wikipedia's article - Pixel
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