Research Article
Optimized Rate Control Algorithm of High-Efficiency Video Coding Based on Region of Interest
Table 2
Experimental comparison data between the ORC algorithm and the K0103 algorithm.
| | Target bit rate (kbps) | HM10.0 | ORC algorithm | (dB) | Y-PSNR (dB) | Actual coding bit rate (kbps) | (%) | Y-PSNR (dB) | Actual coding bit rate (kbps) | (%) |
| | Traffic | 500 | 32.17 | 500.296 | 0.296 | 32.17 | 500.125 | 0.125 | 0.00 | 1000 | 34.41 | 1000.014 | 0.014 | 34.44 | 1000.227 | 0.227 | 0.03 | 2000 | 36.74 | 1999.813 | 0.187 | 36.82 | 2000.016 | 0.016 | 0.08 | 4000 | 38.95 | 4000.054 | 0.054 | 39.02 | 4000.108 | 0.108 | 0.07 | PeopleOnStreet | 500 | 36.83 | 500.301 | 0.301 | 36.88 | 500.136 | 0.136 | 0.05 | 1000 | 38.07 | 1000.065 | 0.065 | 38.12 | 1000.225 | 0.225 | 0.05 | 2000 | 40.24 | 2000.112 | 0.112 | 40.26 | 2000.114 | 0.114 | 0.02 | 4000 | 42.51 | 4000.031 | 0.031 | 42.57 | 4000.107 | 0.107 | 0.06 |
| | BasketballDrive | 500 | 29.14 | 500.213 | 0.213 | 29.25 | 500.141 | 0.141 | 0.11 | 1000 | 31.41 | 999.784 | 0.216 | 31.48 | 1000.113 | 0.113 | 0.07 | 2000 | 33.57 | 2000.074 | 0.074 | 33.59 | 2000.116 | 0.116 | 0.02 | 4000 | 35.71 | 4000.101 | 0.101 | 35.90 | 4000.000 | 0.000 | 0.19 | Parkscene | 500 | 33.27 | 500.186 | 0.186 | 33.35 | 499.847 | 0.153 | 0.08 | 1000 | 35.46 | 1000.214 | 0.214 | 35.50 | 1000.218 | 0.218 | 0.04 | 2000 | 37.71 | 2000.103 | 0.103 | 37.77 | 2000.236 | 0.236 | 0.06 | 4000 | 40.35 | 4000.011 | 0.011 | 40.46 | 4000.231 | 0.231 | 0.11 |
| | FourPeople | 500 | 37.14 | 500.194 | 0.194 | 37.19 | 500.691 | 0.691 | 0.05 | 1000 | 39.93 | 1000.058 | 0.058 | 39.97 | 1000.637 | 0.637 | 0.04 | 2000 | 41.84 | 2000.196 | 0.196 | 41.92 | 2000.314 | 0.314 | 0.08 | 4000 | 43.59 | 4000.112 | 0.112 | 43.71 | 4000.105 | 0.105 | 0.12 | Johnny | 500 | 38.83 | 504.137 | 4.137 | 38.87 | 500.411 | 0.411 | 0.04 | 1000 | 41.62 | 999.084 | 0.084 | 41.72 | 999.579 | 0.421 | 0.10 | 2000 | 43.75 | 2000.253 | 0.253 | 43.82 | 2000.304 | 0.304 | 0.07 | 4000 | 46.14 | 4000.178 | 0.178 | 46.25 | 4000.225 | 0.225 | 0.11 |
| | BasketballDrill | 500 | 32.13 | 500.129 | 0.129 | 32.15 | 500.117 | 0.117 | 0.02 | 1000 | 35.01 | 1000.095 | 0.095 | 35.05 | 1000.206 | 0.206 | 0.04 | 2000 | 38.26 | 2000.140 | 0.140 | 38.33 | 2000.041 | 0.041 | 0.07 | 4000 | 41.57 | 3999.213 | 0.187 | 41.63 | 4000.100 | 0.100 | 0.06 | BQMall | 500 | 29.83 | 500.197 | 0.197 | 29.88 | 500.171 | 0.171 | 0.05 | 1000 | 32.17 | 1000.088 | 0.088 | 32.25 | 1000.231 | 0.231 | 0.08 | 2000 | 35.01 | 2000.244 | 0.244 | 35.13 | 2000.036 | 0.036 | 0.12 | 4000 | 37.58 | 4000.185 | 0.185 | 37.65 | 4000.245 | 0.245 | 0.07 |
| | BasketballPass | 500 | 36.84 | 500.050 | 0.050 | 36.90 | 500.045 | 0.045 | 0.06 | 1000 | 40.46 | 1000.188 | 0.188 | 40.48 | 1000.321 | 0.321 | 0.02 | 2000 | 42.97 | 2000.176 | 0.176 | 43.04 | 1999.796 | 0.204 | 0.07 | 4000 | 45.62 | 4000.071 | 0.071 | 45.73 | 4000.113 | 0.113 | 0.11 | BQSquare | 500 | 31.74 | 500.083 | 0.083 | 31.76 | 500.168 | 0.168 | 0.02 | 1000 | 34.37 | 1000.126 | 0.126 | 34.42 | 1000.112 | 0.112 | 0.05 | 2000 | 36.82 | 1999.765 | 0.235 | 36.85 | 2000.009 | 0.009 | 0.03 | 4000 | 41.13 | 4000.173 | 0.173 | 41.21 | 4000.105 | 0.105 | 0.08 |
| Average | | | | 0.244 | | | 0.190 | 0.065 |
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