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Table 9 Models performance comparison, "Cod." compression artifacts, "trans.": transmission errors. In italic: model performance evaluation on training data.

From: Impairment-Factor-Based Audiovisual Quality Model for IPTV: Influence of Video Resolution, Degradation Type, and Content Type

Model

Degradation type

α

β

γ

ζ

Correlatio

Scal

Bellcore93 [2]

Analog

1.33

0

0

0.11

0.99

9

Bellcore94 [3]

Analog

1.07

0

0

0.11

0.99

9

NTIAITU98 [6]

Cod.

1.54

0

0

0.12

0.93

9

NTIAJones98 [7]

Cod.

−0.677

0.217

0.888

0

0.98

5

Beerends99 v1 [4]

Analog

1.12

0.007

0.24

0.09

0.98

9

Beerends99 v2 [4]

Analog

1.45

0

0

0.11

0.97

9

FT98 [5]

Compression

1.76

0

0

0.10

0.96

9

BT04 (head and shoulder) [8]

Cod.

1.15

0

0

0.17

0.85

0–100

BT04 (high motion) [8]

Cod.

0.95

0

0.25

0.15

0.82

0–100

Ries07 (fast movement) [10]

Cod.

−0.922

0.569

0.506

0.170

0.91

5

Ries07 (video call) [10]

Cod.

−0.631

0.214

0.012

0.118

0.90

5

Winkler06 v1 [11]

Cod., frame-rate

−1.51

0.456

0.770

0

0.94

11

Winkler06 v2 [11]

Cod., frame-rate

1.98

0

0

0.103

<0.94

11

NTT05 [17]

Compr., frame-rate, delay

N.A.

N.A.

N.A.

N.A.

0.94

5

Impairment-based T-V- HD

Cod., trans.

N.A.

N.A.

N.A.

N.A.

0.95

11

Quality-based T-V- HD

Cod., trans.

28.49

0

0.13

0.006

0.94

11

Impairment-based T-V- SD

Cod., trans.

N.A.

N.A.

N.A.

N.A.

0.92

11

Quality-based T-V- SD

Cod., trans.

30.99

0

0

0.006

0.91

11

  1. orrelation coefficients are assumed to be Pearson correlation coefficients.
  2. umber of categories.
  3. udio and video quality predicted from models.
  4. roposed model.