Efficient Region-of-Interest Scalable Video Coding with Adaptive Bit-Rate Control

Table 3

Three-layer (QCIF-CIF-SD) spatial scalability coding versus single layer (4CIF/SD) coding (“SOCCER” video sequence, 30 fps, 300 frames, GOP size is 16).

Quantization parameters	Single layer (4CIF/SD)		QCIF-CIF-SD		Bit-rate overhead (%)
	PSNR [dB]	Bit-rate [kb/s]	PSNR [dB]	Bit-rate [kb/s]
22	41.0	5663.3	41.0	5940.6	4.7
26	38.8	3054.9	38.8	3248.1	6.0
30	36.8	1770.2	36.8	1894.9	6.6
34	34.8	1071.3	34.8	1163.6	7.9