An Algorithm for Fast Computation of 3D Zernike Moments for Volumetric Images

Table 4

Elapsed CPU times and the reduction percentage for selected moment orders (second numerical experiment).

Moment order	Conventional method [21]	Proposed method	Reduction percentage
1	0.634301	0.068551	89.1927%
3	6.880023	0.080441	98.8308%
5	37.497548	0.132576	99.6464%
10	303.177357	0.198912	99.9344%
12	731.124886	0.282519	99.9614%
15	913.281611	0.342348	99.9625%