search

SY-Xuan / IICS

Implementation "Intra-Inter Camera Similarity for Unsupervised Person Re-Identification" in pytorch (CVPR2021)
52 stars 12 forks source link

Why re_ranking() the cross_cam_dist/dist of features? #8

Closed AFangCCC closed 3 years ago

AFangCCC commented 3 years ago

Firstly, thanks for opening source your code! I notice that the dist matrix is processed by re_ranking() function before cluster instead of original dist matrix. But I don't understand the reason.

SY-Xuan commented 3 years ago

It is a commonly used trick in unsupervised ReID. Re-ranking can improve the similarity between samples, leading to a more reliable similarity. Therefore, the quality of generated pseudo-labels can be improved.

AFangCCC commented 3 years ago

It is a commonly used trick in unsupervised ReID. Re-ranking can improve the similarity between samples, leading to a more reliable similarity. Therefore, the quality of generated pseudo-labels can be improved.

Thanks