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Page "Graphics Interchange Format" ¶ 256
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interlaced and image
In interlaced video each frame is composed of two halves of an image.
Digital video cameras come in two different image capture formats: interlaced and deinterlaced / progressive scan.
The GIF Specification allows each image within the logical screen of a GIF file to specify that it is interlaced ; i. e., that the order of the raster lines in its data block is not sequential.
The indicator that an image is interlaced is a bit set in the image's header block.
Additionally, transmitting an image with too much vertical detail will cause annoying flicker on television screens, as small details will only appear on a single line ( in one of the two interlaced fields ), and hence be refreshed at half the frequency.
The technology takes advantage of the interlaced video output of contemporary CRT televisions, displaying the left image in the top field and the right image in the bottom field.
This is in contrast to interlaced video used in traditional analog television systems where only the odd lines, then the even lines of each frame ( each image called a video field ) are drawn alternately.
Real interlaced video blurs such details to prevent twitter, but as seen on the bottom row, such softening ( or anti-aliasing ) comes at the cost of image clarity.
A line doubler could not restore the previously interlaced image at bottom center to the full quality of the progressive image on the top left.
Note: Because the refresh rate has been slowed down by a factor of three, and the resolution is less than half that of typical interlaced video, the flicker in the simulated interlaced portions and also the visibility of the black lines in this image are exaggerated.
This allows the viewer to achieve the desired image sharpness with both interlaced and progressive displays.
Ideally, " Deflicker " would be turned on when played on an interlaced display to reduce interline twitter, and off when played on a progressive display for maximum image clarity.
In multimedia, Motion JPEG ( M-JPEG or MJPEG ) is a video format in which each video frame or interlaced field of a digital video sequence is separately compressed as a JPEG image.
The different resolutions can operate in progressive scan or interlaced mode, although the highest 1080-line system cannot display progressive images at the rate of 50, 59. 94 or 60 frames per second, because such technology was seen as too advanced at the time and the image quality was deemed to be too poor considering the amount of data that needs to be transmitted.
The parameters are numerous, each timing of a video line ( start, end, number of pixels ...) is adjustable, the image may be interlaced or not and the vertical frequency can go down to 50 Hz interlaced to display on TV.
A compound image consisting of fine interlaced vertical slivers of a stereoscopic pair of images was seen in 3-D when viewed through a slightly separated fine grid of correctly spaced alternating opaque and transparent vertical lines, now known as a parallax barrier.
Berthier had also created an extremely coarse and nonfunctional interlaced image for purposes of illustration, but he never reduced the idea to practice or attempted to patent it.
From there the interlaced image can be printed directly to the back ( smooth side ) of the lens or it can be printed to a substrate ( ideally a synthetic paper ) and laminated to the lens.
Each image is arranged ( slicing ) into strips, which are then interlaced with one or more similarly arranged images ( splicing ).

interlaced and is
Furthermore, the network in Figure 3 is only the basic net through which other networks pertaining to logistics and the like are interlaced.
But it is the wooden sculpture from Bali, the one representing two men with their heads bent backward and their bodies interlaced by a fish, that I particularly call to your attention.
One of several different HDTV formats that can be transmitted over DTV is: 1280 × 720 pixels in progressive scan mode ( abbreviated 720p ) or 1920 × 1080 pixels in interlaced video mode ( 1080i ).
If an interlaced video has a frame rate of 15 frames per second the field rate is 30 fields per second.
Here the Tigris and Euphrates rivers lie above the level of the plain in many places, and the whole area is a river delta interlaced by the channels of the two rivers and by irrigation canals.
It is often interlaced with maxims and parables.
The Video section, part 2 of MPEG-2, is similar to the previous MPEG-1 standard, but also provides support for interlaced video, the format used by analog broadcast TV systems.
NTSC color encoding is used with the system M television signal, which consists of 29. 97 interlaced frames of video per second.
( This is a consequence of interlaced scanning that is obviated by progressive scan.
Peter Furhring, a specialist in the history of ornament, says that ( also in a French context ): The ornament known as moresque in the fifteenth and sixteenth centuries ( but now more commonly called arabesque ) is characterized by bifurcated scrolls composed of branches forming interlaced foliage patterns.
* 50i is an interlaced format and is the standard video field rate per second for PAL and SECAM television.
* 60i is an interlaced format and is the standard video field rate per second for NTSC television ( e. g. in the US ), whether from a broadcast signal, DVD, or home camcorder.
Thus, there are depressive disorders, of which the best-known and most researched is major depressive disorder ( MDD ) commonly called clinical depression or major depression, and bipolar disorder ( BD ), formerly known as manic depression and characterized by intermittent episodes of mania or hypomania, usually interlaced with depressive episodes.
Tape-based DV variants, except for DVCPRO Progressive, do not support native progressive recording, therefore progressively acquired video is recorded within interlaced video stream using pulldown.
Progressive video can be recorded with interlaced delivery in mind, in which case high-frequency information between fields is blended to suppress interline twitter.
Frame repeating is similar to field repeating used in interlaced video, and is also called pulldown sometimes.

interlaced and from
* Image processing to remove periodic or anisotropic artifacts such as jaggies from interlaced video, stripe artifacts from strip aerial photography, or wave patterns from radio frequency interference in a digital camera ;
The pixels within each line are not interlaced, but presented consecutively from left to right.
The two common SDTV signal types are 576i, with 576 interlaced lines of resolution, derived from the European-developed PAL and SECAM systems ; and 480i based on the American National Television System Committee NTSC system.
This frame rate derives from the PAL television standard of 50i ( or 50 interlaced fields per second ).
One of the most fascinating and characteristic styles in the manuscript is the zoomorphic style ( adopted from Germanic art ) and is revealed through the extensive use of interlaced animal and bird patterns throughout the book ( Backhouse 1981, 47 ).
The advantage of this method was no loss of speed during the emulation: Data did not need to be significantly reformatted from the original CGA data while written, only interlaced differently.
Strong fibers run along the menisci from one attachment to the other, while weaker radial fibers are interlaced with the former.
Raymond Brown has argued that the text for John 20 was combined from two separate sources, that John inexpertly interlaced together.
The Zero Hour was the first of over a dozen live radio programs broadcast by Japan in World War II featuring Allied prisoners of war ( POW ) reading current news and playing prerecorded music and messages from POWs to their families back home and former fellow soldiers and sailors still serving in the Pacific theater, interlaced with demoralizing commentary and appeals to surrender or sabotage the Allied war effort.
The first section of the book is essentially a collection of short stream-of-consciousness essays, which Kerouac called " sketches ", many simply describing elements of Duluoz's ( Kerouac's ) post-World War II New York City environment, from the texture and smells of a lunch counter to St. Patrick's Cathedral, or minor events like the decision to masturbate in a public restroom — all interlaced with Kerouac's internal dialogue.
The Dance of the Cygnets from Swan Lake involves sixteen pas de chat, performed by four dancers holding hands with their arms interlaced.
This comes from the proper longhand designation being vertical resolution, followed by the interlaced / progressive notation, and then the frame rate.
For television broadcasting purposes, races are interlaced with those from Shelbourne Dublin.
A similar process occurs in a PC and its display with interlaced video ( e. g., from a TV tuner card ).
* Telecide-style algorithms: If the interlaced footage was generated from progressive frames at a slower frame rate ( e. g. " cartoon pulldown "), then the exact original frames can be recovered by copying the missing field from a matching previous / next frame.
Stranded: I Have Come from a Plane That Crashed on the Mountains, written and directed by Gonzalo Arijón, is a documentary film interlaced with dramatised scenes.
D11 source picture rates can be 24, 24 / 1. 001, 25 or 30 / 1. 001 frames per second progressive scan, or 50 or 60 / 1. 001 fields per second interlaced ; compression yields output bit rates ranging from 112 to 140 Mbit / s.
The name originates from the 1080 lines of vertical resolution in the signal broadcast, which is 1080i50-1920 x 1080 at an interlaced frame rate of 50 Hz.
The track is interlaced ( overlapping ) to allow either the platform to be used for passenger trains or to allow wagons to collect stone from the adjacent dock.

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