Multimodal Medical Image Registration Based on an Information-Theory Measure with Histogram Estimation of Continuous Image Representation

Table 1

Statistics of the registration errors (mm) for 20 trials on the real MR T1 and MR PD brain images shown in Figure 4. The second and fourth columns provide the means of the errors in the and y directions. The third and fifth columns display the respective standard deviation of the errors incurred under the five methods. The sixth to eleventh columns show the means and standard deviation of rotation and scales errors.

Methods	Errors in the direction		Errors in the direction		Rotation angles		Scales in the direction		Scales in the direction		Average run time (s)
	Mean	Std.	Mean	Std.	Mean	Std.	Mean	Std.	Mean	Std.
FCHE	0.11	0.05	0.14	0.05	0.07	0.04	0.08	0.06	0.07	0.05	1.58
CHE	0.13	0.07	0.19	0.04	0.08	0.03	0.09	0.05	0.09	0.04	23.6
SH	0.14	0.09	0.20	0.07	0.11	0.07	0.12	0.08	0.13	0.06	1.27
PZW	0.12	0.05	0.22	0.06	0.09	0.05	0.11	0.05	0.12	0.07	1.43
PF	0.11	0.06	0.15	0.05	0.08	0.06	0.09	0.07	0.09	0.05	2.81