MPLE Figure 7.2-8 4:2:0 Sampling for MPEG-2, MPEG-4.2, MPEG- CALCULATED CB, CR SAMPLE 4.10 (H.264), and SMPTE 421M (VC-1). The sampling positions on Y SAMPLE the active scan lines of a progressive or noninterlaced picture. Figure 7.2-10 4:2:0 Sampling for MPEG-2, MPEG-4.2, MPEG- 4.10 (H.264), and SMPTE 421M (VC-1). The sampling positions on the active scan lines of an interlaced picture (top_field_first = 0). PhotoYCC Color space RGB to PhotoYCC PhotoYCC (a trademark of Eastman Kodak Company) was developed to encode Photo CD image data. The goal Linear RGB data (normalized to have values of 0 to 1) is was to develop a display-device-independent color space. nonlinearly transformed to PhotoYCC as follows: For maximum video display efficiency, the color space is for R, G, B > 0.018 based upon ITU-R BT.601 and BT.709. R' = 1.099 R 0.45 - 0.099 The encoding process (RGB to PhotoYCC) assumes CIE Standard Illuminant D65 and that the spectral G' = 1.099 G 0.45 - 0.099 sensitivities of the image capture system are proportional B' = 1.099 $0.45 - 0.099 to the color-matching functions of the BT.709 reference for - -0.018 < R, G, B < 0.018 primaries. The RGB values, unlike those for a computer R' = 4.5 R graphics system, may be negative. PhotoYCC includes colors outside the BT.709 color gamut; these are encoded ACTIVE FIELD N+1 FIELD N using negative values. NUMBER ACTIVE FIELD N FIELD N 1 NUMBER CR SAMPLE CALCULATED CB, CR SAMPLE CB SAMPLE Y SAMPLE Y SAMPLE Figure 7.2-9 4:2:0 Sampling for MPEG-2, MPEG-4.2, MPEG-4.10 (H.264), and SMPTE 421M (VC-1). The sampling Figure 7.2-11 4:2:0 Co-Sited Sampling for 576i DV and DVCAM. positions on the active scan lines of an interlaced picture The sampling positions on the active scan lines of an interlaced (top_field_first = 1). picture. Table 7.2-3 YCbCr formats for various DV applications. 25 Mbps DV 50 Mbps DV MPEG-2, 100 Mbps DV -4.2, YCbCr 480-Line 576-Line 480-Line 576-Line DVCPRO Digital DVCPRO D-9 HD -4.10 H.261, Format DVCAM DVCAM (DVCPRO) Betacam (Digital S) MPEG-1 (H.264) H.2