Efficient Probabilistic and Geometric Anatomical Mapping Using Particle Mesh Approximation on GPUs

Table 2

Runtime comparison, in milliseconds, of different splatting implementations on volume sized 144 × 192 × 160 and 160 × 224 × 160 using collision-free sorting approach, atomic operation with fixed point presentation, atomic operation on the shared memory and CPU reference.

Size	Method	CPU	Sorting	Atomic	Atomic shared
144 × 192 × 160	Random	826	105	29	30
	Diffeomorphic	331	110	105	14
	Singular	224	105	40	41
160 × 224 × 160	Random	1435	215	75	76
	Diffeomorphic	775	224	152	21
	Singular	347	215	144	144