Due to the absence of tailored designs that address challenges such as variations in scale, disparities in illumination, and instances of occlusion, the implementation of current person re-identification techniques remains challenging in practical applications. An Efficient Multi-Branch Attention Network over OSNet (EMANet) is proposed. The structure is composed of three parts, the global branch, relational branch, and global contrastive pooling branch, and corresponding features are obtained from different branches. With the attention mechanism, which focuses on important features, DAS attention evaluates the significance of learned features, awarding higher ratings to those that are deemed crucial and lower ratings to those that are considered distracting. This approach leads to an enhancement in identification accuracy by emphasizing important features while discounting the influence of distracting ones. Identity loss and adaptive sparse pairwise loss are used to efficiently facilitate the information interaction. In experiments on the Market-1501 mainstream dataset, EMANet exhibited high identification accuracies of 96.1% and 89.8% for Rank-1 and mAP, respectively. The results indicate the superiority and effectiveness of the proposed model.

Person re-identification (ReID) has attracted the attention of a large number of researchers due to its wide range of applications. However, due to the difficulty of extracting robust features and the complexity of the feature extraction process, ReID is difficult to truly apply in practice. In this paper, we utilize Pyramid Vision Transformer (PVT) as the backbone for feature extraction and propose a PVT-based ReID method in conjunction with other studies. First, we establish a basic model using powerful methods verified on CNN-based ReID. Second, to further improve the robustness of the features extracted from the PVT backbone, we design two new modules: (1) a local feature clustering (LFC) module is used to select the most discrete local features and cluster them individually by calculating the distance between local and global features, and (2) side information embeddings (SIE) are used to encode nonvisual information and send it to the network for use training in order to reduce its impact on the features. Our experiments show that the proposed PVTReID achieves an mAP of 63.2% on MSMT17 and 80.5% on DukeMTMC-reID. In addition, we evaluated the inference speed for images achieved by different methods, proving that image inference is faster with our proposed method. These results clearly illustrate that using PVT as a backbone network with LFC and SIE modules can improve inference speed while extracting robust features.

Text-based person re-identification enables the retrieval of specific pedestrians from a large image library using textual descriptions, effectively addressing the issue of missing pedestrian images. The main challenges in this task are to learn discriminative image–text features and achieve accurate cross-modal matching. Despite the potential of leveraging semantic information from pedestrian attributes, current methods have not yet fully harnessed this resource. To this end, we introduce a novel Text-based Dual-branch Person Re-identification Algorithm based on the Deep Attribute Information Mining (DAIM) network. Our approach employs a Masked Language Modeling (MLM) module to learn cross-modal attribute alignments through mask language modeling, and an Implicit Relational Prompt (IRP) module to extract relational cues between pedestrian attributes using tailored prompt templates. Furthermore, drawing inspiration from feature fusion techniques, we developed a Symmetry Semantic Feature Fusion (SSF) module that utilizes symmetric relationships between attributes to enhance the integration of information from different modes, aiming to capture comprehensive features and facilitate efficient cross-modal interactions. We evaluated our method using three benchmark datasets, CUHK-PEDES, ICFG-PEDES, and RSTPReid, and the results demonstrated Rank-1 accuracy rates of 78.17%, 69.47%, and 68.30%, respectively. These results indicate a significant enhancement in pedestrian retrieval accuracy, thereby validating the efficacy of our proposed approach.