DigitalVideoAndHDTVAlgorithmsAndInterfaces.pdf

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Part 5 Broadcast and consumer standards 48 Analog NTSC and PAL broadcast standards 571 49 Consumer analog NTSC and PAL 579 50 Digital television broadcast standards 587 569
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Digital Video and HDTV Algorithms a
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Publishing Director: Diane Cerra Pu
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Digital Video and HDTV Algorithms a
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Raster images 1 This chapter introd
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4:3 16:9 Figure 1.3 Pan-and-scan cr
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Figure 1.7 Pixel arrays of several
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SDTV 1’ ( 1⁄60°) d= 1⁄480 SD
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See Appendix B, Introduction to rad
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4095 101 100 0 ∆ = 1% 40.95 : 1 F
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See Bit depth requirements, on page
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Resolution properly refers to spati
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The oct in octave refers to the eig
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Sound pressure level, relative 1 0
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Figure 2.4 Footroom and headroom ar
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Figure 3.1 Contrast control determi
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SMPTE RP 71, Setting Chromaticity a
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Figure 3.7 Brightness control in Ph
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Raster images in computing 4 This c
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Symbolic image description Many met
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Grayscale A grayscale image represe
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Poynton, Charles, “The rehabilita
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The browser-safe palette forms a ra
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Image width is the product of socal
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Don’t confuse PSF with progressiv
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Figure 5.3 Diagonal line reconstruc
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Figure 5.7 Bitmapped graphic image,
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Figure 5.8 Gaussian spot size. Soli
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Flicker is sometimes redundantly ca
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The word raster is derived from the
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Figure 6.3 Production aperture comp
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TEST SCENE SCANNING FIRST FIELD Ima
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Progressive Interlaced Image row 0
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FIRST FIELD SECOND FIELD Figure 6.1
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Table 6.3 Video systems are classif
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An electrical engineer may call thi
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When digital information is process
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Resolution properly refers to spati
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Figure 7.6 Vertical resolution in 4
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Pixel count places a constraint on
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The term luminance is widely misuse
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Figure 8.4 Nonlinearly coded relati
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Tristimulus values are correctly re
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Giorgianni, Edward J., and T.E. Mad
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Simultaneous contrast ratio is the
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Imaging system Some people suggest
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Introduction to luma and chroma 10
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Luma and color differences can be c
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4:2:0 This scheme is used in JPEG/J
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Figure 10.4 Interstitial chroma fil
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The notation CCIR is often wrongly
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Square sampling Component 4:2:2 Rec
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Component 4:2:2 Rec. 601-5 The tech
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See Table 13.1, on page 114, and th
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NTSC stands for National Television
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NTSC and PAL encoding NTSC or PAL e
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Figure 12.2 S-video interface invol
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Concerning the absence of D-4 in th
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Figure 13.1 Comparison of aspect ra
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ATSC A/53, Digital Television Stand
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System Scanning SMPTE standard STL
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data stored in scan-line order, hor
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Compression ratio Quality/applicati
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Figure 14.2 MPEG group of pictures
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Figure 14.6 Example GOP I0B1B2P3B4B
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Many MPEG terms - such as frame, pi
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Voltage, mV 700 350 0 -300 Code, 8-
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SMPTE 259M, 10-Bit 4:2:2 Component
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Voltage, mV 700 350 SMPTE 305.2M, S
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IEC 61883-1, Consumer audio/video e
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For details concerning SCH, see pag
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Some video switchers incorporate di
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My explanation describes the origin
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Figure 16.2 Cosine waves at exactly
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1 1+ sin 0.75 ωt 2 0.5 Figure 16.6
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0 1 2 3 1.0 0.8 0.6 0.4 0.2 0 Time,
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-5 -4 -3 -2 1.0 0.8 0.6 0.4 0.2 -1
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Impulse (point sampling) 0 1 t 0 2
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Figure 16.12 [1, 1] FIR filter sums
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Figure 16.17 5-tap FIR filter respo
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Figure 16.20 Comb filter response r
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125 ns, 45° at 1 MHz 125 ns, 90°
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Compensation of undesired phase res
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ωS 2 ⎛ 1 ⎞ Eq 16.3 Ne ≈ ⋅
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We could use the term weighting, bu
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Figure 16.26 FIR filter example, 25
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1 1+ sin 0.44 ωt 2 0.5 Figure 16.2
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Resampling, interpolation, and deci
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Figure 17.1 Two-times upsampling st
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Figure 17.4 Analog filter for direc
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Julius O. Smith calls this Waring-
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Smith, A.R., “Planar 2-pass textu
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You can consider the entire stopban
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1 1 1 512 2 2 8 = · In a direct im
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Taken literally, decimation involve
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0 Horizontal displacement (fraction
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Figure 18.7 Spatial frequency spect
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Schreiber, William F., and Donald E
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Oversampling to double the number o
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10 k 1 k 100 10 1 100 m 10 m 100 1
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Viewing environment Max. luminance,
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ISO 5-1, Photography - Density meas
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Campbell, F.W., and V.G. Robson,
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See Introduction to radiometry and
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Figure 20.2 Luminance and lightness
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Figure 21.1 Example coordinate syst
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Power, relative 400 500 600 700 Wav
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B G 400 500 600 700 400 500 600 700
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The term sharpening is used in the
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Grassmann’s Third Law: Sources of
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1 y = 1- x 1 Spectral locus Line of
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Figure 21.9 SPDs of blackbody radia
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Tungsten illumination can’t have
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∆E* is pronounced DELTA E-star. i
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McCamy argues that under normal con
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Wyszecki, Günter, and W.S. Styles,
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If you are unfamiliar with the term
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CIE standards established in 1964 w
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Table 22.2 NTSC primaries (obsolete
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IEC FDIS 61966-2-1, Multimedia syst
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Michael Brill and R.W.G. Hunt argue
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CMF of X sensor CMF of Y sensor CMF
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CMF of Red sensor CMF of Green sens
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Spectral sensitivity of Red sensor
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For the D 65 reference now standard
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Eq 22.10 RGB components where one o
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Poynton, Charles, “Wide Gamut Dev
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Opto-electronic transfer function (
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Roberts, Alan, “Measurement of di
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The importance of rendering intent,
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See Headroom and footroom, on page
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Eq 23.7 Video signal, V’ 1.2 1.0
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Figure 23.5 Rec. 709, sRGB, and CIE
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PDP and DLP devices are commonly de
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Concerning the conversion between R
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Video, PC TRISTIM. Computergenerate
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An SGI workstation can be set to ha
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The Rec. 709 function is suitable f
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What are loosely called JPEG files
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+1 G AXIS 0 G Bk 0 255 G’ COMPONE
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Here the term color difference refe
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Figure 24.3 shows a time delay elem
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See Appendix A, YUV and luminance c
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Nonlinear red, green, blue (R’G
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The mismatch between the primaries
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XYZ or R 1G 1B 1 TRISTIMULUS 3×3 (
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Owing to the dependence of the opti
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Luma/color difference component set
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System Notation Color difference sc
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For a discussion of primary chromat
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Figure 25.2 P BP R components for S
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The Y’P B P R and Y’C B C R sca
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Eq 25.6 Eq 25.7 You can determine t
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+128 +127 0 -128 (clipped) 0 Figure
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When the term Y’UV (or YUV) is en
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Yl G G Figure 26.1 B’-Y’, R’-
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Figure 26.3 CBCR compo- +112 nents
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Concerning Pointer, see the margina
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Equations 26.12 and 26.13 are writt
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100% 90% 50% 10% 0% 0 1 2 3 4 5 Y
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Active lines (vertically) encompass
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Back porch is described in Analog h
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255 Full-range code, computing 0 -1
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danger in using such operations: Up
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If you use CTI, you run the risk of
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See Appendix A, YUV and luminance c
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Eq 28.3 Eq 28.4 Eq 28.5 Eq 28.6 1
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It is unfortunate that the formulat
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COMPOSITE NTSC VIDEO Y’/C SEPARAT
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COMPOSITE PAL VIDEO Y’/C SEPARATO
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COMPOSITE VIDEO or S-video LUMA COM
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COMPOSITE NTSC VIDEO Saturation Hue
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Y’ C f SC Figure 29.1 Y’/C spec
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1 2 ... 262 263 Figure 29.4 Color s
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Figure 29.7 Dot crawl is exhibited
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1 2 3 4 ... Figure 29.9 Color subca
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COMPOSITE PAL VIDEO Y’/C SEPARATO
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t Opposite field Y’+C t+1⁄59.94
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CHROMA FILTER RESPONSE CHROMA (C) S
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CHROMA (C) SPECTRAL POWER LUMA (Y
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Because an analog demodulator canno
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Y’ I Q 1.3 MHz 600 kHz SUBCARRIER
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A decoder cannot determine whether
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525 · 60 = 15750 2 Line rate The t
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60 1000 525× 2 1001 315 88 3 57954
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Sampling NTSC at 4f SC gives 910 sa
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60 Hz 7 · 5 · 5 · 3 525/60 (480
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3· 588· 25 Hz = 44100 Hz 3 490 30
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See Frame, field, line, and sample
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SMPTE 258M, Television - Transfer o
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The IRE unit is introduced on page
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SMPTE 12M, Time and Control Code. S
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The V and H bits are asserted durin
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* 1250/50 is an exception; see SMPT
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See NTSC two-frame sequence, on pag
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SMPTE 260M describes a scheme, now
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SMPTE 292M, Bit-Serial Digital Inte
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A Naive combined sync establishes h
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1 PRE- BROAD EQUALIZATION PULSES 0V
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Most lines have a single normalwidt
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1 23 4 5 6 7 Figure 34.6 Sync separ
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Figure 34.7 BNC connector Figure 34
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Figure 35.1 A videotape recorder (V
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In consumer VCR search mode playbac
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Heads for other longitudinal tracks
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The term sync in sync block is unre
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Notation Component analog VTRs are
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Even if playback errors are so seve
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Notation Method Tape width (track p
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D-7 (DVCPRO), DVCAM runs twice the
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D-12 (DVCPRO HD) The DV standard wa
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Figure 36.1 “2-3 pulldown” refe
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Film is transferred to 576i25 video
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FILM A A VIDEO, 2-3 PULLDOWN A VIDE
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Native 24 Hz coding Traditionally,
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Figure 37.1 Test scene FIRST FIELD
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For a modest improvement over 2-tap
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Figure 37.13 Interstitial spatial f
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IN Figure 37.17 Cosited spatial fil
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ISO/IEC 10918, Information Technolo
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Figure 38.2 DCT concentrates image
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Eq 38.1 Owing to the eight-line-hig
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In MPEG-2, DC terms can be coded wi
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Figure 38.8 Zigzag scanning is used
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Figure 38.12 Compression ratio cont
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Hamilton, Eric, JPEG File Interchan
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Concerning DVC recording, see page
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356 357 358 359 Figure 39.2 Chroma
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CMs in a segment are denoted a thro
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For a more elaborate description, a
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DV HD HD stands for high definition
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IEC 61904, Video recording - Helica
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MPEG-2 specifies several algorithmi
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422P@ML allows 608 lines at 25 Hz f
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Figure 40.1 MPEG-2 frame picture co
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If horizontal size or vertical size
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A prediction region in an anchor fr
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Each nonintra macroblock in an inte
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Figure 40.4 Frame DCT type involves
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Distributed refresh does not guaran
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Whether an encoder actually searche
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Figure 40.9 Buffer occupancy in MPE
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Group of pictures (GOP header) the
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Gibson, Jerry D., Toby Berger, Tom
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f FR f H 30 = ≈ 29. 97 Hz 1. 001
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Concerning closed captions, see ANS
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CHAPTER 41 480 i COMPONENT VIDEO 50
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SMPTE RP 187, Center, Aspect Ratio
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8-bit code 235 125 1 / 2 16 Figure
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Voltage, mV 700 350 0 -300 0 H EIA/
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480i NTSC composite video 42 Althou
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Concerning the association of U wit
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IEC 60933-5 (1992-11) Interconnecti
Page 524 and 525: 8-bit code 200 176.25 70.5 60 4 757
Page 526 and 527: Derived line rate is 15.625 kHz. It
Page 528 and 529: For details concerning VITC in 576i
Page 530 and 531: CHAPTER 43 576 i COMPONENT VIDEO 52
Page 532 and 533: SMPTE RP 187, Center, Aspect Ratio
Page 534 and 535: Code 235 125 1 / 2 16 Figure 43.2 5
Page 536 and 537: 1135 4 1 + = 625 709379 2500 = 283.
Page 538 and 539: See NTSC Y’IQ system, on page 365
Page 540 and 541: 8-bit code 211 137.5 64 EBU Tech. 3
Page 542 and 543: ANSI/EIA-189-A, Encoded Color Bar S
Page 544 and 545: Figure 45.3 NTSC- Encoded 100/0/75/
Page 546 and 547: ITU-R Rec. BT.471, Nomenclature and
Page 548 and 549: Figure 45.7 Modulated 5-step stair
Page 550 and 551: ( ) PULSE T The risetime, from 10%
Page 552: Figure 45.12 FCC composite test sig
Page 555 and 556: tri Trilevel pulse BR Broad pulse T
Page 557 and 558: 550 DIGITAL VIDEO AND HDTV ALGORITH
Page 559 and 560: Component digital 4:2:2 interface Y
Page 561 and 562: Passband insertion gain, dB Stopban
Page 564 and 565: SMPTE 274M, 1920 × 1080 Scanning a
Page 566 and 567: tri Trilevel pulse BR Broad pulse L
Page 568 and 569: Trilevel sync comprises a negative
Page 570 and 571: Vertical interval video lines do no
Page 572 and 573: RGB primary components Picture info
Page 574: mV +700 +350 +300 0 -300 -44 +44 0H
Page 579 and 580: In 1993, the International Radio Co
Page 581 and 582: Main audio program, (monophonic) Fr
Page 583 and 584: Only CN/PAL is deployed today - in
Page 585 and 586: ITU-R system Colloquial Scanning fS
Page 587 and 588: NTSC-4.43 The NTSC-4.43 scheme, som
Page 589 and 590: Incoherent subcarrier Many consumer
Page 591 and 592: Color-under recording was introduce
Page 594 and 595: Digital television broadcast standa
Page 596 and 597: MPEG-2 specifies upper bounds for p
Page 598 and 599: DVB standards are promulgated by ET
Page 600: Appendices A YUV and luminance cons
Page 603 and 604: for 500 pounds of cement, you will
Page 605 and 606: Pratt, William K., Digital Image Pr
Page 607 and 608: Hamilton, Eric, JPEG File Interchan
Page 609 and 610: Eq B.1 Radiant exitance sums emitte
Page 611 and 612: A lumen is produced by about 1.5 mW
Page 613 and 614: Michael Brill and Bob Hunt agree th
Page 616 and 617: Glossary of video signal terms This
Page 618 and 619: 2. An SDTV component digital video
Page 620 and 621: Alpha, α In computer graphics, a c
Page 622 and 623: 235 at an 8-bit component (Rec. 601
Page 624 and 625: CCIR System 1. Former designation,
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“combination” (of the RF parame
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Y’C B C R , and MAC. Distinguishe
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CVBS Composite video with burst and
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Decimation Resampling producing few
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DVCPRO50 Digital video cassette, pr
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along with all associated preceding
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correction is usually performed at
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Interstitial 1. Chroma subsampling
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Level 1. In video, generally, the a
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M-JPEG A technique or file format u
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Nit Candela per meter squared, cd·
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PAL, nonmathematical A PAL (1) syst
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R’-Y’ See B’-Y’, R’-Y’,
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tion. The precise color interpretat
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SDTI Serial data transmission inter
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Transcoding 1. Traditionally, conve
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VHS Video Home System: A consumer a
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α, alpha (absorptance) 602 α, alp
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5000 K (color temperature) 225 525/
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aspect ratio (cont’d) 4:3 in 480i
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Bringhurst, Robert xliv British Sta
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clipping (cont’d) of C B and C R,
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composite (cont’d) NTSC and PAL 9
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decoder controls 346 conventional l
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EIAJ 573 electro-optical transfer f
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filter (cont’d) and sampling 141-
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grayscale 35 see also gamma green 2
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intensity (cont’d) radiant (I) 20
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level (cont’d) of AC coefficient
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McLellan, J.H. 167 MCU (minimum cod
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NTSC (cont’d) primary chromaticit
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pixel (cont’d) bilevel 34 graysca
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ate (cont’d) sampling, 13.5 MHz 9
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saturation 212 and colorbars 535 an
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spatiotemporal domain 10 (sketch) S
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tone reproduction curve (TRC) see t
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viewing (cont’d) distance (cont
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sketch by Kevin Melia About the aut
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