r | g | b | y | c | m | w | |
R | 1 | 0 | 0 | 1 | 0 | 1 | 1 |
G | 0 | 1 | 0 | 1 | 1 | 0 | 1 |
B | 0 | 0 | 1 | 0 | 1 | 1 | 1 |
r | g | b | y | c | m | w | |
Y | 82 | 145 | 41 | 210 | 170 | 107 | 235 |
cb | 90 | 54 | 240 | 16 | 166 | 202 | 128 |
cr | 240 | 34 | 110 | 146 | 16 | 222 | 128 |
and
; 864 - 720 = 144 pixels;
857 pixels; 857 - 720 = 137 pixels; 10 μs
720 × 576 × 25 × 2 × 8 = 166 Mbit/s
720 × 480 × 30 × 2 x 8 = 166 Mbit/s
360 × 288 × 25 × 1.5 × 8 = 31 Mbit/s
360 × 240 × 30 × 1.5 × 8 = 31 Mbit/s
37 Mbit/s
31 Mbit/s
31 Mbit/s
4.7 Mbit/s
1.4 Mbit/s
94 73 194 184 50 204 207
94 82 73 132 194 201 184 109 50 121 204 222 207 PSNR = 20.2 dB
A sinusoid with amplitude A has a peak-to-peak 2A = 2n ∆ ⇒ ∆ A = A 21-n
Peak-to-peak power of the sinusoid is
higher than its mean power ⇒ PSNR = 10.78 + 6n
10.78 + 6n ≥ 58 ⇒ n ≥ 8 bits