Decoder-Side Motion Estimation Assuming Temporally or Spatially Constant Motion

Table 1

PSNR quality for the STAR interpolation method [7] and the proposed hierarchical method for several test sequences. Significant changes larger than 0.25 dB are highlighted. Furthermore, results for hierarchical motion compensation using mean of the squared differences (MSDs) are shown for comparison.

Resolution	Sequence	STAR	Hier. MC	Hier. MC (MSD)
	Mobile	36.19 dB	36.07 dB	36.06 dB
QCIF	Foreman	39.67 dB	37.61 dB	37.63 dB
	City	34.83 dB	35.15 dB	35.27 dB
	Flower	33.45 dB	30.51 dB	32.08 dB
CIF	Mobile	29.49 dB	31.07 dB	30.90 dB
	Tempete	30.86 dB	30.81 dB	30.81 dB
	Bus	27.27 dB	29.05 dB	29.08 dB
	City	30.13 dB	27.71 dB	27.62 dB
4CIF	Flower	28.70 dB	33.56 dB	33.61 dB
	Mobile	26.75 dB	31.89 dB	31.92 dB
	Spincalendar	29.51 dB	31.99 dB	32.11 dB
720p	Sheriff	38.08 dB	38.14 dB	38.14 dB
	City	31.66 dB	30.16 dB	30.20 dB