Use of two or more fields to scan a video frame, each field representing alternate lines. An interlaced system decreases perceived flicker by increasing the field update rate. Compare with Progressive Scan.

The pattern described by two separate field scans when they join to form a complete video frame. As the video picture is transmitted, the first field picks up even-numbered scan lines - the second, odd-numbered ones. The two interleave together to form a single, complete frame..

An Interlaced GIF is displayed incrementally in several passes, and detail is added each time. Depending on which graphics viewer or Web browser is being used, interlaced GIFs may produce a "venetian blind" effect or simply a blurry or blocky image that gradually sharpens. (see GIF & Noninterlaced)

Video scanning where each frame comprises of two fields which together produce a complete image. Note that the two fields are spaced 1/50 or 1/60 second apart. Two interlace fields are not equivalent to one progressive frame.

The process of creating an image by having the scan lines that form the image laid down at two intervals; each positioned adjacent to the other. The first interval generates the odd lines while the second generates the even lines. The intervals are timed so that the human eye blurs the two fields together and sees them as one. However, this means that only half the lines are presented at any given moment, which can create motion artifacts in the image. This is most noticeable in film-based material.

the manner in which a television picture is composed, scanning alternate lines to produce one field, approximately every 1/60 of a second in NTSC. Two fields comprise one television frame. Therefore, the NTSC television frame rate of approximately 30 fps.

The accurate combining of two fields, one odd one even, into a single frame. For standard video picture make up, you would have 50 fields per second interlaced, which equates to 25 frames per second.

Storing partial data from a single graphic image in multiple sequences. The purpose of interlacing is to have a partial image initially appear on screen rather than having to wait for the image to appear in its entirety. With interlacing, equally spaced sets of lines from the original image are stored together, and these sets appear one on top of the other in sequence.

A video scanning system in which alternating lines are transmitted, so that half a picture is displayed each time the scanning beam moves down the screen. An interlaced frame is made of two fields.

The combination of two fields, one odd one even to make a single frame

In television theory the method of placing horizontal scan lines in between each other during the period of one frame. The first field lays down 262 &Mac189; horizontal lines and then the second field lays down 262 &Mac189; horizontal lines in between the first set of lines in field number one.

The drawing of all of the odd lines, then all of the even lines, to display each video frame. Every once in a while a TV set has the defect (line pairing) of having the even lines not land exactly between the odd lines, which results in loss of vertical resolution.

This process divides and presents each video frame as two fields. Imagine a video frame being divided by the odd and even horizontal lines that make up the picture. The first field presents the odd lines, the second field represents the even lines. The fields are aligned and timed so that, with a still image, the human eye blends the two fields together and sees them as one. Motion in the image makes the fields noticeable. Interlace scanning allows only half the lines to be transmitted and presented at any given moment. A 1080i signal transmits and displays only 540 lines per 60th of a second. NTSC transmits and displays only 240 lines per 60th of a second. Interlaced images have motion artifacts when two fields don't match to create the right frame-often the case with film-based material.

This is a web graphic technique used to have an image appear in steps (with a rough image appearing first, and then progressively getting more detail), rather than waiting for the full source image to appear. This is getting less and less used as broadband Internet picks up steam.

an image displayed by drawing two passes of the electron beam where each pass strikes every other horizontal line

A video display made up of two alternating fields, one that scans the even-numbered lines followed by one that scans the odd-numbered lines. The field repetition rate is normally tied to the local AC power line frequency e.g. 60 fields/second in North America, thus presenting a complete picture, or frame, 30 times per second. See: NTSC, PAL, SECAM, Scan Line.

Part of many broadcast TV systems. Here in the USA, refers to the NTSC standard where 1/2 frames are broadcast every 1/60th of a second. A complete frame takes two of these ½ frames displayed taking up an actual 1/30th of a second. There are 400+ horizontal lines in each full NTSC frame... 200 per each 1/2 frame. One 1/2 frame is made up of the odd numbered scan lines, the other 1/2 frame contains the even numbered scan lines. The full frame is visible when the two 1/2 frames are merged (interlaced) to form a single image. Interlaced images contain motion artifacts due to the interlacing. Also see progressive-scan.

To display a video frame in two fields. One field contains the even lines of the frame, the other field contains the odd lines. During playback, the lines in one field are displayed first, then the lines in the second field are displayed.

Process of alternating scan lines to create a complete image. In CRT displays, every second field/frame is scanned between the first field/frame. The first field represents the odd lines; the second field represents the even lines. The fields are aligned and timed so that, with a still image, the human eye blurs the two fields together and sees them as one. Interlace scanning allows only half the lines to be transmitted and presented at any given moment. A 1080i HD signal transmits and displays only 540 lines per 60th of a second. 480i NTSC transmits and displays only 240 lines per 60th of a second. Motion in the image can make the fields noticeable. Interlaced images have motion artifacts when two fields don't match to create the complete frame, often most noticeable in film-based material.

Describes the method of displaying a complete fame of video as two separate fields, where one field contains the even lines, and the other contains the odd lines. The lines of each field are interleaved, making a complete picture.

the alternative scaning of odd and even lines in video which results in a temporal displacement of odd and even lines in a video frame and nasty artifacts. Detailed description

A television image technology referring to the process of alternating scan lines to create a complete image. In CRT televisions, every second field/frame is scanned between the first field/frame. The fields are aligned and timed so that the human eye views them as one image. Interlace scanning does not generate a comparable image quality as progressive scanning.

To split a TV picture into two fields of odd and even lines. Under the interlaced method, every other line is scanned during the first pass, then the remaining lines are scanned in the second pass. All analog TV formats (NTSC, PAL and SECAM) use interlace.

The process of combining image data from two or more graphics in a configuration compatible with a lenticular lens array.

display: A kludgy trick to work around the limitations of the NTSC video system, which is the standard in the United States. NTSC consists of 30 frames per second at 525 lines per screen resolution. That is low resolution compared to Europe or Japan which use up to 1,000 lines of resolution in the video signal. In order to "fill out" the image and minimize flicker, one-half of the image is drawn every 1/60 second, first the 262.5 odd numbered lines, then the evens. Couch potatoes are digging in until HDTV comes along. Computer displays are non-interlaced - a major reason why they cost more - and the Mac display runs at 66 frames per second.

A process used to refresh video displays and some computer displays that alternately scans every other horizontal scan line in the display. Interlaced displays often flicker, especially when showing static images containing narrow horizontal lines.

A process in which the picture is split into two fields by sending all the odd numbered lines to field one and all the even numbered lines to field two. Field one is then displayed first, followed by field 2. This was necessary in the early days of TV when there was not enough bandwidth to send a complete frame fast enough to create a non-flickering image.

The interleaving of two video fields to produce a frame. Interlacing is adopted to reduce screen flicker for a given frame rate.

A technique that uses more than one vertical scan to reproduce a complete image. In television, the 2:1 interlace used yields two vertical scans (fields) per frame: the first field consists of the odd lines of the frame, the other of the even lines. See also field and frame.

In CRT displays, every second field/frame is scanned between the first field/frame. Usually, this process divides and presents each video frame as two fields, as if the field was raked by a comb. The first field presents the odd lines, the second field represents the even lines. The fields are aligned and timed so that, with a still image, the human eye blurs the two fields together and sees them as one. Interlace scanning allows only half the lines to be transmitted and presented at any given moment. A 1080i HDTV signal transmits and displays only 540 lines per 60th of a second. 480i NTSC transmits and displays only 240 lines per 60th of a second.

When referring to computer video; it is a method of image generation that draws every other line on the screen, then rescans the screen to fill in the intervening lines. When specifying a computer monitor it= s better to have the non-interlaced type. Interlaced monitors have a flicker effect that some people can see and others cannot, but in any case the flicker causes eyestrain and headaches if the user is exposed to it for long periods of time.

Interlace refers to the scanning method used by the two fields that produce the single frame of information Field one scans the odd lines and field two scans the even. Two types of interlacing are commonly used. CCTV system cameras random, and 2 to 1. random interlacing has a random and not a defined starting point for the scan line. 2 to 1 interlace has a defined starting scan point and will offer a more stable picture

A scanning process where every other horizontal line is scanned in one field while the alternate lines are scanned in the next field to produce a complete picture frame.

Video scanning where each frame is made up of two fields, each of which makes up half of the image. The first field comprises odd numbered lines, whilst the second field is made up of even lines.

To display video by using a half-resolution image known as a field. Interlaced video uses two video fields to make a single frame of video. Each field of video contains alternating lines of an image: field one displays the odd numbered lines and field two displays the even numbered lines. Interlacing saves bandwidth when the video is transmitted over the airways or on cable.

A technique used in visual displays to produce high resolution images at update rates slower than the eye flicker frequency. With interlace, a fraction of the total frame lines (called a field) is displayed at multiples of the frame rate. These lines are spread out across the entire display area and with each field update, a different set of lines are displayed. The number of fields required to reconstruct the entire frame is the interlace factor. The lines are usually spaced apart by the interlace factor. Normal television is interlaced by a factor of two fields per frame.

Interleaved Stereo Interleaving

Each frame of a video picture is scanned twice. Firstly, all the odd lines are broadcast, then all the even lines are broadcast. Each set of odd/even lines is known as a field . Two fields therefore make up a frame. The point of doing this is to reduce flicker, and not increase bandwidth.

Interlacing is a method of encoding a bitmap image such that a person who has partially received it sees a degraded copy of the entire image. When communicating over a slow communications link, this is often preferable to seeing a perfectly clear copy of one part of the image, as it helps the viewer decide more quickly whether to abort or continue the transmission.