Dots per inch
Dots per Inch (DPI)
Dots per Inch (DPI) is a measure of spatial printing or video dot density, in particular the number of individual dots that can be placed within the span of one linear inch (2.54 cm). The DPI value is used in both printing and digital imaging to indicate the resolution of images.
Pronunciation
Dots per Inch is pronounced as /dɒts pər ɪntʃ/.
Etymology
The term "Dots per Inch" originates from the method of measuring print resolution, where each dot of ink is counted in a one-inch line. The term has been adopted in digital imaging, although digital images have pixels rather than physical dots.
Related Terms
- Pixel density: Pixel density is a measurement of a screen's resolution, expressed as the number of pixels per inch (PPI). It can be considered the digital equivalent of DPI.
- Resolution: Resolution is the detail an image holds. Higher resolution means more image detail.
- Printer: A printer is a device that accepts text and graphic output from a computer and transfers the information to paper.
- Image: An image is an artifact that depicts visual perception, such as a photograph or other two-dimensional picture.
See Also
External links
- Medical encyclopedia article on Dots per inch
- Wikipedia's article - Dots per inch
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