A Method for Extracting Features of Modern Folk Opera Performance Art Based on Principal Component Analysis

Table 3

Basic data set of Experiment 2.

Subvector dimension k	40	80	160	320	640	1280
Number of projection vectors d	2	4	8	16	32	64
Number of image feature values	4802	2404	1208	6016	3032	1564
Recognition (%)	78.8	77.3	76.5	76.5	76.2	76
Time (s)	1.95	12.38	23.16	38.31	42.85	85.26