Table 3: Comparison of final registration results of the iterative refinement algorithm [19], the multiresolution blocking algorithm [20], and the proposed algorithm on ten simulated image pairs.

Image pairsInitial error before registrationAfter registration
Iterative refinement Multiresolution blockingProposed approach
RMS ( )RMS Elapsed time (s)RMS Elapsed time (s)RMS Elapsed time (s)

No. 16.0981.94268.1%268.81.51175.2%89541.48675.6%14.9
No. 26.8921.39679.7%270.51.01585.3%99580.88187.2%13.5
No. 36.4421.68273.9%269.80.87086.5%87451.30279.8%13.1
No. 46.2011.19180.8%274.51.60374.1%91801.06182.9%15.6
No. 56.3631.82571.3%254.81.25480.3%95531.28979.8%14.4
No. 66.2701.25879.9%275.11.54275.4%92100.96084.7%12.4
No. 76.8132.13368.7%296.31.53277.5%87681.61476.3%14.2
No. 86.9201.34980.5%265.01.27281.6%90031.22982.2%14.3
No. 97.3991.84675.1%289.61.78475.9%95481.49079.9%14.2
No. 107.4942.40867.9%256.52.11271.8%93461.64378.1%15.1

Average74.6%272.178.4%922680.6%14.2