Person re-identification (ReID) is often affected by occlusion, which makes most of the features extracted by ReID models contain a lot of identity-independent noise. Recently, the use of Vision Transformer (ViT) has enabled significant progress in various visual artificial intelligence tasks. However, ViT suffers from insufficient local information extraction capability, which should be of concern to researchers in the field of occluded ReID. This paper conducts a study to exploit the potential of attention mechanisms to enhance ViT in ReID tasks. In this study, an Attention Enhanced ViT Network (AET-Net) is proposed for occluded ReID. We use ViT as the backbone network to extract image features. Even so, occlusion and outlier problems still exist in ReID. Then, we combine the spatial attention mechanism into the ViT architecture, by which we enhance the attention of ViT patch embedding vectors to important regions. In addition, we design a MultiFeature Training Module to optimize the network by the construction of multiple classification features and calculation of the multi-feature loss to enhance the performance of the model. Finally, the effectiveness and superiority of the proposed method are demonstrated by broad experiments on both occluded and non-occluded datasets.

Visual prostheses, used to assist in restoring functional vision to the visually impaired, convert captured external images into corresponding electrical stimulation patterns that are stimulated by implanted microelectrodes to induce phosphenes and eventually visual perception. Detecting and providing useful visual information to the prosthesis wearer under limited artificial vision has been an important concern in the field of visual prosthesis. Along with the development of prosthetic device design and stimulus encoding methods, researchers have explored the possibility of the application of computer vision by simulating visual perception under prosthetic vision. Effective image processing in computer vision is performed to optimize artificial visual information and improve the ability to restore various important visual functions in implant recipients, allowing them to better achieve their daily demands. This paper first reviews the recent clinical implantation of different types of visual prostheses, summarizes the artificial visual perception of implant recipients, and especially focuses on its irregularities, such as dropout and distorted phosphenes. Then, the important aspects of computer vision in the optimization of visual information processing are reviewed, and the possibilities and shortcomings of these solutions are discussed. Ultimately, the development direction and emphasis issues for improving the performance of visual prosthesis devices are summarized.

Keyframe insertion is critical for the performance and robustness of SLAM systems. However, traditional heuristic-based methods often lead to suboptimal keyframe selection, compromising the accuracy of localization and mapping. To address this, we propose KINND, a lightweight neural network-based framework for real-time keyframe insertion. The framework introduces a novel foundational paradigm for learning-based keyframe insertion, encompassing the model architecture and training methodology. A neural network model is designed using a hierarchical weighted self-attention mechanism to encode real-time SLAM state information into high-dimensional representations, producing keyframe insertion decisions. To overcome the absence of ground truth for keyframe insertion, a composite loss function is developed by integrating pose error and system state information, providing a metric for this task. Additionally, a novel training mode enhances the model's real-time decision-making capabilities. Experimental results on public and private datasets demonstrate that KINND operates in real time without requiring a GPU and, with a single training session on a public dataset, achieves superior generalization performance on other datasets.