INTERLACED SCANNING Meaning and
Definition
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Interlaced scanning, in the context of video or television display technology, refers to a method of displaying images in which two sets of picture information, known as odd and even fields, are alternated and displayed in rapid succession to create a complete image. This technique is primarily used in analog television systems and has been widely adopted in standard definition television (SDTV) formats.
Interlaced scanning works by dividing a frame of video or an image into two separate fields. The odd field comprises all the odd-numbered lines of the frame, while the even field consists of all the even-numbered lines. These fields are displayed one after the other, with the odd field displayed first, followed by the even field. This pattern is repeated for each subsequent frame.
The advantage of interlaced scanning is that it allows for a higher perceived motion resolution when compared to progressive scanning, which displays all lines of a frame in sequential order. By rapidly alternating between odd and even fields, interlaced scanning gives the illusion of smoother motion, especially for fast-moving subjects or scenes.
However, interlaced scanning does have some drawbacks. It can lead to visual artifacts known as interlacing artifacts or flickering, where horizontal lines may appear distorted or jagged. These artifacts are more visible on larger screens or when viewing from close distances.
While interlaced scanning was prevalent in older television technologies, such as CRT-based displays, modern digital displays have largely shifted to progressive scanning, which offers a higher quality and eliminates interlacing artifacts.
Common Misspellings for INTERLACED SCANNING
- unterlaced scanning
- jnterlaced scanning
- knterlaced scanning
- onterlaced scanning
- 9nterlaced scanning
- 8nterlaced scanning
- ibterlaced scanning
- imterlaced scanning
- ijterlaced scanning
- ihterlaced scanning
- inrerlaced scanning
- inferlaced scanning
- ingerlaced scanning
- inyerlaced scanning
- in6erlaced scanning
- in5erlaced scanning
- intwrlaced scanning
- intsrlaced scanning
- intdrlaced scanning
- intrrlaced scanning
Etymology of INTERLACED SCANNING
The word "interlaced" in the term "interlaced scanning" comes from the verb "interlace", which means to intertwine or interweave. This term originated from the field of textile or fabric production, where interlacing threads or yarns are woven together to create a fabric.
In the context of scanning, interlaced scanning refers to a technique used in television or video systems, where the image is constructed by alternating odd and even lines of a video frame. This interweaving of lines creates a complete image on the screen. The term "interlaced scanning" emerged in the mid-20th century as television technology was evolving.
So, the etymology of "interlaced scanning" derives from the concept of interlacing threads or yarns in fabric production, which was adapted to describe the process of constructing video images by alternating lines on a screen.
