Low-Complexity Hierarchical Mode Decision Algorithms Targeting VLSI Architecture Design for the H.264/AVC Video Encoder

Table 3

Bit rate and PSNR for fast intra-frame mode decision and RDO-based mode decision.

Video Sequence	RDO decision		Fast intra frame mode decision		RDO × fast intra frame mode decision
	PSNR (dB)	Number of Bits (Kbits)	PSNR (dB)	Number of Bits (Kbits)	ΔPSNR (dB)	Δbits (%)
Station 2	39.64	34,022	39.33	35,729	−0.30	+5.02
Sunflower	42.77	33,030	42.41	35,391	−0.36	+7.15
Tractor	39.40	58,208	39.04	60,939	−0.37	+4.69
Man In car	42.61	8,818	42.52	9,018	−0.09	+2.27
River Bed	38.65	56,735	38.28	58,962	−0.37	+3.93
Rolling Tomatoes	40.48	12,170	40.39	12,537	−0.09	+3.02
Rush Hour	41.65	20,013	41.48	21,306	−0.17	+6.46
Average	40.74	31,857	40.49	33,412	−0.25	+4.88