Research Article

H.264 SVC Complexity Reduction Based on Likelihood Mode Decision

Table 4

Simulation results of combined spatial and temporal scalability of various algorithms.

SequenceQPΔYPSNR (dB)ΔBit rate (kbps)ΔTime (%)
BL/ELLi [5]Yeh [8]Kim [9]Lee [13]Prop.Li [5]Yeh [8]Kim [9]Lee [13]Prop.Li [5]Yeh [8]Kim [9]Lee [13]Prop.

Bus18/22−0.004−0.046−0.092−0.183−0.0281.6650.7970.5102.8020.78865.5656.7668.5463.6772.12
28/32−0.003−0.037−0.074−0.149−0.1091.0720.205−0.0532.2090.19665.8551.5670.3348.3271.91
38/42−0.002−0.030−0.059−0.118−0.0600.934−0.529−0.0411.475−0.53871.0270.4161.9841.2376.53

City18/22−0.005−0.046−0.092−0.184−0.0302.0190.4110.7792.3220.30961.6773.2467.4367.5668.23
28/32−0.003−0.038−0.076−0.153−0.0711.0080.1350.1871.938−0.07646.8269.2752.0867.3552.88
38/42−0.003−0.031−0.062−0.124−0.0850.750−1.666−0.5470.889−1.12440.2875.8844.9971.9745.79

Crew18/22−0.005−0.047−0.094−0.188−0.0483.8260.5280.6643.9631.95062.7881.1856.9255.1969.34
28/32−0.004−0.040−0.080−0.160−0.0823.409−0.0350.4863.5451.53265.0780.9451.7267.0971.13
38/42−0.003−0.033−0.066−0.133−0.0512.761−0.023−0.4102.8980.88557.2884.0770.5772.3962.78

Football18/22−0.006−0.046−0.092−0.183−0.0012.5491.9590.4252.6860.67351.1667.2773.4053.1657.72
28/32−0.005−0.037−0.073−0.146−0.0482.3721.5410.4592.5090.49546.4651.9269.4347.9652.52
38/42−0.003−0.029−0.057−0.114−0.0731.4750.894−0.5641.612−0.40165.8644.8376.0466.8171.37

Foreman18/22−0.004−0.047−0.093−0.186−0.0852.2790.6820.3932.4160.40275.5868.3871.3264.7882.14
28/32−0.003−0.039−0.078−0.156−0.0402.0020.5040.1172.1390.12675.8470.1771.1166.5781.90
38/42−0.003−0.032−0.065−0.129−0.1230.202−0.392−1.6840.338−1.67579.5361.8275.7358.2285.03

Harbour18/22−0.006−0.046−0.091−0.182−0.0032.4170.4490.4312.4530.44053.1958.7958.9569.6459.75
28/32−0.005−0.037−0.073−0.147−0.0462.0060.1890.1712.1930.18065.5970.6970.8565.6771.65
38/42−0.004−0.029−0.059−0.118−0.0731.201−0.653−0.6711.351−0.66271.4575.9976.1572.2876.95

Mobile18/220.000−0.046−0.091−0.1820.0011.3950.3180.3002.5320.51943.2771.1649.0377.5849.83
28/320.000−0.037−0.073−0.147−0.0270.832−0.067−0.0851.969−0.04444.3770.9549.6377.3450.43
38/420.000−0.029−0.058−0.116−0.0910.084−1.115−1.1331.981−0.03242.8575.5747.5580.4748.35

Soccer18/22−0.004−0.046−0.092−0.184−0.0324.3110.4431.9412.4480.43467.6448.8781.3445.2774.20
28/32−0.004−0.038−0.076−0.152−0.0413.3440.4771.5232.4810.46864.1749.4781.1045.8770.23
38/42−0.003−0.031−0.063−0.125−0.0792.321−0.5460.8761.458−0.55571.3347.3984.2343.7976.84

Average18/22−0.004−0.046−0.092−0.184−0.0282.5580.6980.6802.7030.68960.1065.7065.8662.1066.67
28/32−0.003−0.038−0.076−0.151−0.0582.0060.3690.3512.3730.36059.2764.3764.5360.7765.33
38/42−0.003−0.031−0.061−0.122−0.0791.216−0.504−0.5221.500−0.51362.4567.0067.1663.4067.96