{"title":"Multiple Dynamic Object Tracking for Visual SLAM","authors":"Fuxin Liu Hubei, Yanduo Zhang, Xun Li","doi":"10.1109/ICRCV55858.2022.9953172","DOIUrl":"https://doi.org/10.1109/ICRCV55858.2022.9953172","url":null,"abstract":"The assumption based on scene rigidity has been accepted widely in visual SLAM framework. However, the supposition limits the development of SLAM algorithm in the real world. Especially for automatic driving, many complicate cases involved in it, which demands our SLAM system that provides accurate position robustly and perceives the surrounding environment reliably. Therefore, in this paper, we propose a novel visual SLAM front-end module, which uses instance segmentation and dense optical flow estimation to ensure the efficient separation of static background and dynamic targets. For potential moving objects, we take advantage of Unscented Kalman Filter (UKF) to track moving targets and update the according moving state. In light of scale inconsistency in the camera pose estimation, we recover the scene structure and obtain the scale factor in the key frame by the depth estimation network. At the end, we integrate the estimated camera pose and dynamic object tracking into a unified visual odometry. In the process of trajectory optimization, we adopt the sliding window mechanism to acquire the spatio-temporal information of the dynamic object. The experiment results show that the tracking of dynamic objects not only can provide rich clues for surroundings understanding, but also help the tracking of camera pose, and then improve the robustness of the SLAM system in dynamic environment.","PeriodicalId":399667,"journal":{"name":"2022 4th International Conference on Robotics and Computer Vision (ICRCV)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124263492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"An Efficient and Accurate 3D SLAM Method for Dynamic Environment","authors":"Yingbo Wang, Zhong-li Wang, X. Wu","doi":"10.1109/ICRCV55858.2022.9953253","DOIUrl":"https://doi.org/10.1109/ICRCV55858.2022.9953253","url":null,"abstract":"LiDAR-based 3D SLAM has always been one of the hotspots in the field of self-driving and mobile robots in the recent years. But how to build a robust and accurate map for a complex dynamic environment is still a challenging task, which attracts more and more attention in this community. In this paper, we proposed an efficient and accurate 3D SLAM method for complex dynamic environment, which mainly includes two stages. In the first moving object detection stage, an end-to-end full convolution semantic segmentation network (FCNN) is exploited to segment the potential moving objects accurately. Then the left point cloud is forward to the static SLAM module, which is based on direct point cloud registration method, the map is managed efficiently with the incremental kd-tree data structure. Additionally, an independent thread of the loop closure detection (LCD) based on the framework of multi-factor graph is adopted to further improve the accuracy and robustness of final outputs. With the elaborately design of the whole framework, the proposed method can work efficiently. The performance of the proposed method is validated with the benchmark dataset KITTI, the results show that by removing the dynamic objects, the stability and accuracy of SLAM can be greatly improved.","PeriodicalId":399667,"journal":{"name":"2022 4th International Conference on Robotics and Computer Vision (ICRCV)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123011777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Improved Genetic-Ant Colony Fusion Algorithm","authors":"Wei Hu, Tongzhou Zhao, Xin-wen Cheng, Chen Li","doi":"10.1109/ICRCV55858.2022.9953222","DOIUrl":"https://doi.org/10.1109/ICRCV55858.2022.9953222","url":null,"abstract":"An improved genetic-ant colony fusion algorithm is proposed to improve the search speed of path planning and to obtain the optimal solution. Combining the advantages of the two algorithms, adaptive fetching is used for selection probability, crossover probability and variation probability respectively for the genetic algorithm to globally search for the optimal path. To address the problem that the number of iterations in the genetic algorithm relies too much on subjective experience, we propose to derive the evolutionary degree from the fitness function as a strategy to control the conversion of the algorithm. Finally, the optimal solution searched by the genetic algorithm is used as the value of the initial pheromone of the ant colony algorithm, and the crossover operation of the genetic algorithm is added to the ant colony algorithm, which can optimize the search speed . The experiments show that the fusion strategy can improve the path planning search speed and the accuracy of the candidate solutions.","PeriodicalId":399667,"journal":{"name":"2022 4th International Conference on Robotics and Computer Vision (ICRCV)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121987387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"OA-STGCN: An Output Anchoring-based Graph Convolutional Network for Human Trajectory Prediction","authors":"Jiuyu Chen, Zhong-li Wang, Jian Wang","doi":"10.1109/ICRCV55858.2022.9953209","DOIUrl":"https://doi.org/10.1109/ICRCV55858.2022.9953209","url":null,"abstract":"Human trajectory prediction is an important task for urban self-driving. It can provide the key input information for the planning decision module or used for collision avoidance system. However, pedestrian trajectories are influenced by both the intend of pedestrian itself and the interaction with the surrounding environment, which makes it a challenging task. The existing methods usually modeled these interactions with some methods integrating observed pedestrians’ states. In this paper, we present an Output Anchoring based Spatio-Temporal Graph Convolution Network (OA-STGCN) for human trajectory prediction, which considers the subjective fac-tors of pedestrian generating target trajectory, includes the Time-Extrapolator Convolutional Neural Network (TXPCNN), and followed by a simple and effective Attention Anchoring Block (AAB) composed of SE-block and CBAM-block. By experiments with two open benchmark datasets ETH and UCY show that, the proposed method outperforms the existing SOTA algorithm.","PeriodicalId":399667,"journal":{"name":"2022 4th International Conference on Robotics and Computer Vision (ICRCV)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121765205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Face Expression Recognition Based on Lightweight Fused Attention Mechanism","authors":"Baocheng Yu, Guanyu Zhang, Wenxia Xu, Ming Wei","doi":"10.1109/ICRCV55858.2022.9953221","DOIUrl":"https://doi.org/10.1109/ICRCV55858.2022.9953221","url":null,"abstract":"To address the problems of redundant model counts, large computational effort, poor targeting of effective feature extraction and easy loss of large amount of information in traditional convolutional neural networks for expression recognition, a lightweight fused attention mechanism approach for face expression recognition is proposed. The method is based on ResNet convolutional neural network, and the depthwise separable convolutional module is added in the feature extraction stage to reduce the number of parameters, and then the attention mechanism of the fusion channel is used to improve the extraction and representation ability of the model for important feature information. The PReLU is used to replace the ReLU to prevent Dying ReLU problems. The model has been simulated on the public RAF-DB dataset. The results show that the accuracy of facial expression recognition reached 85.53%, while the number of parameters and computational effort are kept at low levels. The results verify the effectiveness and superiority of the improved model.","PeriodicalId":399667,"journal":{"name":"2022 4th International Conference on Robotics and Computer Vision (ICRCV)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133734539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Context-Aware Network for Person Search","authors":"Yu Gu, Tao Lu","doi":"10.1109/ICRCV55858.2022.9953260","DOIUrl":"https://doi.org/10.1109/ICRCV55858.2022.9953260","url":null,"abstract":"The key to effective person search is aiming to localize the pedestrians and obtain the discriminative embeddings representation for person ReID from numerous surveillance scene images. And the existing one-step anchor-free methods can achieve a trade-off between speed and accuracy, but it can not fully exploit the contextual feature information of search context, resulting in undesirable localization. To alleviate this issue, we propose a Context-Aware Network for Person Search (CANPS) to delve into the high-level contextual information. In CANPS, firstly, context encoder is proposed to bridge the gap between the feature maps, achieved by distributing rich contextual information to prediction head layers. Second, we design the malleable center sampling strategy to reasonably expose sample region and focus on the centroid feature representations. What’s more, we design above components in a trainable bag-of-freebies manner, so that real-time person search can greatly improve the accuracy without increasing extra inference cost. Extensive experiments show that the approach we proposed can outperform current state-of-the-art methods in public CUHK-SYSU datasets.","PeriodicalId":399667,"journal":{"name":"2022 4th International Conference on Robotics and Computer Vision (ICRCV)","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124113010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mei Zhang, Jun Liu, Chuang Liu, Ting Wu, Xueping Peng
{"title":"An Efficient CADNet for Classification of High-frequency Oscillations in Magnetoencephalography","authors":"Mei Zhang, Jun Liu, Chuang Liu, Ting Wu, Xueping Peng","doi":"10.1109/ICRCV55858.2022.9953255","DOIUrl":"https://doi.org/10.1109/ICRCV55858.2022.9953255","url":null,"abstract":"Epilepsy is a chronic neurological disease, and locating the lesions precisely is crucial to the success of epilepsy surgery. The high-frequency oscillations (HFOs) in magnetoencephalography (MEG) of epileptic patients can be used to detect seizures. Due to the inefficient and error-prone operation of traditional HFOs detection, it is necessary to develop an approach for the detection of HFOs, which can automatically classify HFOs in MEG. In this paper, We proposed a novel deep learning-based CADNet for the classification of HFOs in MEG. First, we preprocessed acquired MEG data by short-time Fourier transform (STFT), and the extracted time-frequency domain information was applied for model training after pictorialism. Then, we captured the features from these images through convolutional neural network combined with multi-head self-attention, all these features were input into Dendrite Net for classification. We evaluated our model on MEG dataset, and the accuracy, precision, recall, and F1-score of the optimized model reached 0.97, 0.98, 0.97, 0.97. We compared the proposed CADNet with other deep learning models, the result demonstrates that our model outperforms others.","PeriodicalId":399667,"journal":{"name":"2022 4th International Conference on Robotics and Computer Vision (ICRCV)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114500003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Adaptive Model-free Control with Supervising Switching Technique for Robotic Manipulator with Actuator Failure","authors":"Xingyu Ma, Haoping Wang, Yang Tian, Dingxin He","doi":"10.1109/ICRCV55858.2022.9953229","DOIUrl":"https://doi.org/10.1109/ICRCV55858.2022.9953229","url":null,"abstract":"This paper proposes a time-delay estimator-based adaptive model-free controller with supervising switching technique for robotic manipulator with actuator failure. The proposed method based on ultra local model is composed of timedelay estimator (TDE), proportion-differential control (PDC), supervising switching technique (SST) and auto-tuning algorithm based on Nussbaum function. The TDE is adopted to estimate the lumped disturbance, while PDC is designed to stabilize the closed-loop system. For better control performance when actuator failure occurs, the SST and variable adaptive gain are introduced to suppress error induced by TDE and realize fast convergence. To validate the effectiveness and superiority of the referred strategy, compared simulations are conducted via Matlab/ Simulation. The simulation results demonstrate that the proposed controller owns high accuracy, fast convergence and less chattering in dealing with actuator failure problem.","PeriodicalId":399667,"journal":{"name":"2022 4th International Conference on Robotics and Computer Vision (ICRCV)","volume":"127 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116178442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Multi-View Auto-Calibration Method Based on Human Pose Estimation","authors":"Lingling Chen, Zhuo Gong, Lifeng Li, Jian Yin","doi":"10.1109/ICRCV55858.2022.9953175","DOIUrl":"https://doi.org/10.1109/ICRCV55858.2022.9953175","url":null,"abstract":"This paper contributes a novel automatic calibration method of a multi-camera system based on human joints. The main difficulty of this problem is the lack of enough known world coordinate points and corresponding two-dimensional image points. Most previous methods address this difficulty by using customized calibration tools, which is tedious due to a lot of manual intervention. In this work, we use human joints as the corresponding points between cameras to deal with this problem. In addition, the proposed method does not need a customized calibration tool, but only requires a person to walk in the calibrated scene, which can reduce the calibration cost greatly. Moreover, the experimental results of binocular and four-camera system indicate that the proposed method outperforms the state of-the-art methods in the case of small public market for both binocular cameras and multi-camera cameras.","PeriodicalId":399667,"journal":{"name":"2022 4th International Conference on Robotics and Computer Vision (ICRCV)","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122285637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Min Zhang, Jing Wu, Chunmei Wang, Baocheng Yu, Wenxia Xu, Han Wang
{"title":"Research on Application of Bidirectional Thyristor in the Intelligent Air Filter","authors":"Min Zhang, Jing Wu, Chunmei Wang, Baocheng Yu, Wenxia Xu, Han Wang","doi":"10.1109/ICRCV55858.2022.9953218","DOIUrl":"https://doi.org/10.1109/ICRCV55858.2022.9953218","url":null,"abstract":"The bidirectional thyristor can be conducted bidirectionally and has good switching characteristics. The conversion from weak electricity to strong electricity and low power to high power can be realized via bidirectional thyristor. The intelligent air filter monitors indoor air quality and real-time control filer fan start-up and speed adjustment automatically according to the monitoring results. Therefore it can exchange the filtered outside air with the inside air.In the intelligent air filter, the zero-crossing detection circuit and the speed regulating circuit are designed. The zero-crossing Detection Circuit is realized by the photoelectric coupling device TLP521-2, and the accurate zero-crossing pulse is generated every time the power supply voltage passes the zero point. In the interrupt program, the I/O pin of the main control microcomputer is set to control the voltage of the fan to turn on and off, so as to realize the speed regulation.In the intelligent air filter, a total of 11 states are set. In each state, the proportion of different voltage connected, the fan can work at different speeds. When the voltage connected 20% , the speed is very low, increase in turn, when all connected, the speed is maximum. It has been proved by experiments that the characteristics of Sine curve of AC voltage can be guaranteed by half-waveguide pass. Fans can run continuously and stably under different settings, and the noise is even. So that fan speed regulation can be realized , no contact, quick action and high reliability.","PeriodicalId":399667,"journal":{"name":"2022 4th International Conference on Robotics and Computer Vision (ICRCV)","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115940835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}