osnovy_postroenia_sistem_videonabolyudenia
.pdf
. 2.2 – .
2.2 $
. ( , & -$ ). . % $ - . . . : DivX 6.9.2, FLV1, Microsoft Video 1 ! !-
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. 2.3 – . . .
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* % & # 2## .
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. 2.4 – .
- . 2.1. 7 2## . !
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340 |
460 |
700 |
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FLV1 |
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MS |
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4.)$ PSNR, . &
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cmd ( . . 2.5).
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. 2.5 – ( %
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( . . 2.6).
. 2.6 – & % measurementPSNR
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. 2.7 – * & measurementPSNR
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. 2.8).
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4 . * – 2 ! PSNR
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PSNR % &, -
2.2. ( . . 2.9).
. 2.9 – ) ! PSNR
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5. )$ PSNR . .. ( 2.2. * % & # -
PSNR . &
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- . 2.2. PSNR ! !
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MSE = |
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(Peak Mean Square Error): |
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PMSE = |
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max A m, n |
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Absolute Error): |
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∑∑[A(m, n)− A′(m, n)] |
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NAE = |
m =1 n =1 |
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∑∑ |
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m =1 n =1
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NMSE =
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M N |
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∑∑[A(m, n)− A′(m, n)]2 |
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∑∑[A(m, n)]2 |
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– &/ :
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∑∑[A(m, n)] |
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SNR = 10lg |
m=1 n=1 |
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;
–& & (Peak-to-Peak Signal-to-Noise Ratio – PSNR):
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2552 |
MN |
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PSNR = 10 lg |
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& A(m, n), A′(m, n) – ! (m, n)-&
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* . 2.2
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! &: Wavelet, MJpeg, JPEG, MPEG-2, MPEG-4, H-263. )
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2## . - . . % . . % & % ISO JPEG. - % $ $
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