A Fast Subpixel Registration Algorithm Based on Single-Step DFT Combined with Phase Correlation Constraint in Multimodality Brain Image

Table 1

Image characteristic for different modalities.

Data sources	Modality	Resolution	Pixel size	Grayscale
Vanderbilt	CT	512 × 512 × 15	0.415/0.415/6	0∼4096
	MRI	512 × 416 × 19	0.4462/0.4492/5	0∼1149
CMU	CT	512 × 512 × 28	0.6535/0.6535/4	−32,768∼32767
	PET	128 ∗ 128 ∗ 16	2.59072/2.59072/8	−32,768∼32767
GMH	CT	512 × 512 × 15	0.4151/0.4151/6	0∼4096
	MRI	512 × 416 × 19	0.4462/0.4492/5	0∼1149