Research on facial dataset cleaning in mixed scenes based on spatiotemporal correlation

Researching methods for cleaning mixed scene facial datasets can improve the performance and reliability of mixed scene facial recognition algorithms. Therefore, the paper proposes a facial dataset cleaning method in mixed scenes based on spatiotemporal correlation. The 2DPCA algorithm is used to reduce the dimensionality of the data set, and the composite multi-scale entropy is used to decompose, reconstruct and arrange the image sequence after the dimensionality reduction. The autocorrelation coefficient and the number of interrelations between image sequences were determined, and the anomaly detection of data set was realised by combining spatio-temporal correlation. Sparse representation was used to repair the abnormal images, and the images with high similarity were deleted to clean the mixed scene face data set. The experimental results show that the minimum anomaly rate of our method is 0.5%, the success rate is between 94% and 96%, and the minimum time cost is 0.2 s.