本研究提出一個創新的行人重識別方法，為了解決行人偵測所面臨的問題，在切割行人影像後，使用OpenPose關節點擷取方法，保留完整的行人影像，並計算左右腳踝關節點座標距離，取其距離最大值的影像作為代表影像，減少雙腳重疊所造成的遮擋。再來為了解決人體視角變化因素的影響，本研究將行人重識別結合人體視角估測，使用ResNet18模型預先將行人影像做人體視角分類，以提高後續識別結果的準確率。本研究採用OSNet模型來擷取行人特徵，該模型最大特點就是考慮了行人全尺度特徵，且在近年行人重識別領域中有相當好的識別效果。最後，本研究以自行建立的MIAT多視角行人資料集進行實驗，結合視角估測分類的方法其Rank-1為81%，mAP則為85%，相較於未經視角估測分類的方法，Rank-1提高22%，mAP則是提高17%。;In this study, an innovative Person Re-Identification method is proposed. To solve the problem of pedestrian detection, after cutting the pedestrian image, the OpenPose method is used to retain the complete pedestrian image and calculate the coordinates distance between the left and right ankle keypoints, and the image with the maximum distance is taken as the representative image to reduce the occlusion caused by the overlapping of the two legs. In order to solve the influence of viewpoint variation, this study combines Person Re-Identification with human body orientation estimation, and uses the ResNet18 model to pre-classify pedestrian images by human viewpoints to improve the accuracy of recognition results. This study uses the OSNet model to capture pedestrian features. This model considers the omni-scale features of pedestrians and has good performance in the field of Person Re-Identification in recent years. Finally, this study uses the self-established MIAT multi-view person dataset to conduct experiments, and combined viewpoint estimation method, the Rank-1 is 81% and the mAP is 85%, which is 22% higher in Rank-1 and 17% higher in mAP than the method without viewpoint estimation method.
