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. Author manuscript; available in PMC: 2023 Jun 2.

Published in final edited form as: Med Image Anal. 2021 Apr 5;71:102048. doi: 10.1016/j.media.2021.102048

TABLE I.

Quantitative Results of Simulation

Method	Metric	Number of 2-D Vectors
Method	Metric	1K	2K	5K	10K	20K	50K	100K	200K
CPU [16], [36]	Time Cost (s/frame)	0.078	0.254	0.734	2.439	6.429	27.901	121.725	446.319
CPU [16], [36]	GPU Memory (MB)	-	-	-	-	-	-	-	-
GPU_H [21]	Time Cost (s/frame)	1.059	1.076	1.122	1.264	1.684	2.832	11.213	32.622
GPU_H [21]	GPU Memory (MB)	216	216	216	216	216	218	238	236
GPU_P [22]	Time Cost (s/frame)	1.572	1.559	1.586	1.594	1.773	2.256	3.877	7.561
GPU_P [22]	GPU Memory (MB)	216	216	236	256	374	1174	3294	10156
Ours	Time Cost (s/frame)	1.624	1.618	1.664	1.698	1.747	1.892	2.107	2.692
Ours	GPU Memory (MB)	236	236	256	296	374	608	1004	1766

^*

The CPU version of mean-shift does not use the GPU, so GPU memory is not available(−).