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The main advantage with progressive scan is that motion appears smoother and more realistic. There is an absence of visual artifacts associated with interlaced video of the same line rate, such as interline twitter. Frames have no interlace artifacts and can be captured for use as still photos. With
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Note: Because the refresh rate has been slowed by a factor of three, and the resolution is less than half a resolution of a typical interlaced video, the flicker in the simulated interlaced portions and also the visibility of the black lines in these examples are exaggerated. Also, the images above
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are below. The interlaced images use half the bandwidth of the progressive ones. The images in the center column precisely duplicate the pixels of the ones on the left, but interlacing causes details to twitter. Real interlaced video blurs such details to prevent twittering, but as seen in the
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progressively. A user-intuitive solution to this is when display hardware and video games come equipped with options to blur the video at will, or to keep it at its original sharpness. This allows the viewer to achieve the desired image sharpness with both interlaced and progressive displays.
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In the case of most media, such as DVD movies and video games, the video is blurred during the authoring process itself to subdue interline twitter when played back on interlaced displays. As a consequence, recovering the sharpness of the original video is impossible when the video is viewed
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pictures of the lower row, such softening (or anti-aliasing) comes at the cost of image clarity. A line doubler shown in the bottom right picture cannot restore the previously interlaced image in the center to the full quality of the progressive image shown in the top left.
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are based on what it would look like on a monitor that does not support interlaced scan, such as a PC monitor or an LCD or plasma-based television set, with the interlaced images displayed using the same mode as the progressive images.
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in the early 1990s. It was agreed that all film transmission by HDTV would be broadcast with progressive scan in the United States. Even if a signal is sent interlaced, an HDTV will convert it to progressive scan.
176:, United Kingdom in 1936. It was also used in Baird's experimental transmissions using 30 lines in the 1920s. Progressive scanning became universally used in computer screens beginning in the early 21st century.
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Progressive scan also offers clearer and faster results for scaling to higher resolutions than its equivalent interlaced video, such as upconverting 480p to display on a 1080p HDTV. HDTVs not based on
168:) are drawn alternately, so that only half the number of actual image frames are used to produce video. The system was originally known as "sequential scanning" when it was used in the
307:). Prices for consumer-grade 4k HDTVs have since lowered and become more affordable, which has increased their prevalence amongst consumers. Computer monitors can use even greater
279:, needed to use interlace to achieve full vertical resolution, but could display progressive video at the cost of halving the vertical resolution. Before HDTV became common, some
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effect associated with interlacing. On the left there are two progressive scan images. In the middle there are two interlaced images and on the right there are two images with
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progressive scan there is no need to introduce intentional blurring (sometimes referred to as anti-aliasing) to reduce interline twitter and eye strain.
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and video projectors were produced with one or more full-resolution progressive-scan inputs, allowing these displays to take advantage of formats like
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322:. For an in-depth explanation of the fundamentals and advantages/disadvantages of converting interlaced video to a progressive format, see
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299:, TVs had emerged on the consumer market in the 2010s, also using progressive resolutions, but usually sold with prohibitive prices (
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The disadvantage of progressive scan is that it requires higher bandwidth than interlaced video that has the same frame size and
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385:: a scheme designed to acquire, store, modify, and distribute progressive-scan video using interlaced equipment and media
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displays are usually more expensive than comparable lower resolution HDTV models. At the debut of
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systems where only the odd lines, then the even lines of each frame (each image called a
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technology cannot natively display interlaced video, therefore interlaced video must be
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as the display resolutions are progressive by nature. Other CRT-type displays, such as
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when the refresh rate is slowed by a factor of three, demonstrated using the
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before it is scaled and displayed. Deinterlacing can result in noticeable
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Progressive scan is used for scanning and storing film-based material on
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558:, Displayed at CES 2013, the Sharp 8k UHD TV. Retrieved 29 May 2013.
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This rough animation compares progressive scan with
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476:Abramson, Albert; Christopher H. Sterling (2007).
246:25 formats. Progressive scan was included in the
445:Digital Video and Hdtv: Algorithms and Interfaces
358:between the video source and the display device.
156:are drawn in sequence. This is in contrast to
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186:Interlaced video § Interline twitter
129:Learn how and when to remove this message
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479:The History of Television, 1942 To 2000
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172:240 line television transmissions from
1535:Also used in China's DVB-S/S2 network.
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516:. John Wiley & Sons. p. 200.
271:, all LCD computer monitors, and most
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430:John Logie Baird, Television Pioneer
406:. Luke's Video Guide. Archived from
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67:adding citations to reliable sources
263:Progressive scan is used for most
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608:. Digital Overdrive. p. 24.
1692:Ultra-high-definition television
574:. Cengage Learning. p. 94.
230:Usage in storing or transmitting
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448:. Morgan Kaufmann. p. 56.
152:in which all the lines of each
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571:Television Production Handbook
144:(alternatively referred to as
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510:Hurley, Danny Briere (2008).
209:scan, also demonstrating the
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544:4k resolution wikipedia page
442:Poynton, Charles A. (2003).
378:High Efficiency Video Coding
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383:Progressive segmented frame
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250:'s technical standard for
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513:Home Theater For Dummies
199:Indian-head test pattern
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568:Zettl, Herbert (2011).
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602:Andrews, Dale (2011).
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146:noninterlaced scanning
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1005:Mechanical television
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142:Progressive scanning
63:improve this article
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309:display resolutions
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527:. Retrieved
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505:
493:. Retrieved
478:
471:
459:. Retrieved
444:
437:
429:
428:Burns, R.W.
424:
414:February 12,
412:. Retrieved
408:the original
398:
348:deinterlaced
341:
337:
333:
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233:
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194:
145:
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125:
119:January 2013
116:
106:
99:
92:
85:
73:
61:Please help
56:verification
53:
36:
1654:Templates (
1371:MPEG-H HEVC
1110:Progressive
281:televisions
166:video field
1676:Categories
1498:Captioning
1300:MPEG-4 AVC
1068:Interlaced
993:Historical
929:Captioning
888:BTSC (MTS)
863:1250 lines
847:1125 lines
676:Television
621:27 January
587:27 January
529:27 January
495:27 January
461:27 January
455:1558607927
390:References
330:Advantages
89:newspapers
1635:Test card
1308:ATSC A/72
1214:DVB 3D-TV
826:819 lines
754:625 lines
714:525 lines
696:405 lines
356:input lag
207:interlace
1547:Defunct.
1513:Teletext
1379:ATSC 3.0
1035:567-line
1030:455-line
1025:441-line
1020:375-line
1015:343-line
1010:180-line
1000:Pre-1940
954:Teletext
834:System E
762:System B
722:System M
704:System A
362:See also
305:8k HDTVs
301:4k HDTVs
1394:ISDB-S3
1343:MobaHo!
1290:MobaHo!
1059:Digital
806:PALplus
354:and/or
285:PALPlus
103:scholar
1467:HE-AAC
1389:HD DMB
934:CGMS-A
870:HD-MAC
730:NTSC-J
687:Analog
612:
578:
520:
486:
452:
267:(CRT)
242:24 or
105:
98:
91:
84:
76:
1409:Audio
1361:ABS-S
1333:SBTVD
1272:ABS-S
1231:ABS-S
1174:UHDTV
1167:1080p
1098:1080i
898:NICAM
880:Audio
810:SECAM
802:PAL-N
744:B-MAC
738:PAL-M
368:1440p
293:1080p
277:SDTVs
273:HDTVs
170:Baird
154:frame
110:JSTOR
96:books
1503:CPCM
1457:LPCM
1427:AC-4
1417:AC-3
1399:DTMB
1353:AVS2
1338:1seg
1323:DTMB
1313:CMMB
1267:DTMB
1259:AVS+
1249:CMMB
1226:DTMB
1221:ISDB
1204:ATSC
1162:720p
1157:HDTV
1150:576p
1145:480p
1140:EDTV
1133:288p
1128:240p
1123:1seg
1118:LDTV
1093:HDTV
1086:576i
1081:480i
1076:SDTV
1045:OSKM
974:VITC
964:VEIL
893:EIAJ
854:MUSE
726:NTSC
623:2013
610:ISBN
589:2013
576:ISBN
531:2013
518:ISBN
497:2013
484:ISBN
463:2013
450:ISBN
416:2014
252:HDTV
244:576p
240:480p
236:DVDs
82:news
1599:DCI
1508:EPG
1488:AFD
1462:AAC
1452:PCM
1437:DRA
1432:DTS
1421:5.1
1384:DVB
1328:DVB
1318:DMB
1241:AVS
1209:DVB
984:XDS
979:WSS
969:VIT
959:VBI
949:PDC
944:GCR
939:EPG
903:SAP
816:MAC
798:PAL
344:CRT
297:UHD
65:by
1678::
1540:^
1528:^
1184:8K
1179:4K
836:,
808:,
804:,
800:,
792:,
788:,
784:,
780:,
776:,
772:,
768:,
764:,
736:,
732:,
728:,
326:.
311:.
287:,
1658:)
1601:)
1597:(
1423:)
1419:(
838:F
812:)
794:N
790:L
786:K
782:I
778:H
774:G
770:D
766:C
740:)
656:e
649:t
642:v
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107:·
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