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Table 2 Estimated errors of rates and PSNRs with the proposed algorithm in terms of GOP sizes

From: Distributed video coding supporting hierarchical GOP structures with transmitted motion vectors

Sequence

QP

Rate (%)

PSNR (%)

Average rate difference

Average PSNR difference

GOP8

GOP4

GOP2

GOP8

GOP4

GOP2

Akko

33

0.725

0.328

0.219

0.078

0.063

0.033

37

0.814

0.423

0.257

0.088

0.072

0.035

41

0.993

0.519

0.310

0.115

0.076

0.046

45

0.939

0.654

0.390

0.151

0.111

0.055

49

1.057

0.696

0.399

0.168

0.124

0.061

Ballroom

33

1.027

0.434

0.222

0.111

0.065

0.025

37

1.116

0.526

0.326

0.132

0.081

0.036

41

1.186

0.609

0.313

0.155

0.100

0.046

45

1.308

0.696

0.405

0.163

0.109

0.045

49

1.156

0.622

0.360

0.216

0.155

0.065

Flamenco2

33

0.596

0.376

0.202

0.099

0.077

0.036

37

0.509

0.373

0.245

0.100

0.074

0.031

41

0.683

0.518

0.294

0.123

0.102

0.055

45

1.075

0.692

0.405

0.128

0.106

0.049

49

0.857

0.628

0.362

0.212

0.168

0.084

Race1

33

0.910

0.361

0.168

0.095

0.067

0.025

37

0.788

0.411

0.214

0.120

0.079

0.032

41

0.940

0.465

0.265

0.152

0.107

0.040

45

0.986

0.629

0.344

0.175

0.115

0.054

49

1.270

0.684

0.404

0.282

0.153

0.083

Average

0.944

0.577

0.320

0.143

0.104

0.049