Average Gait Differential Image Based Human Recognition

Table 2

Comparison of CPU time (ms) for PCA and 2DPCA feature extraction (CPU: Intel Core i3 2.30 GHz; RAM: 4 GB).

Feature extraction method	Image size
	32 × 24	64 × 48	96 × 72	128 × 96	160 × 120	192 × 144
2DPCA	17 ms	47 ms	105 ms	167 ms	257 ms	431 ms
PCA	117 ms	318 ms	1273 ms	4288 ms	8896 ms	17876 ms