Conference on Computer Graphics, Artificial Intelligence, and Data Processing最新文献

{"title":"Retinal artery and vein classification optimization method based on vascular topology","authors":"Zhihong Jiang, Hong Su, Aidi Zhao, C. She, Hui Li, Huaiyu Qiu, Xiao-Xi Huang","doi":"10.1117/12.2674589","DOIUrl":"https://doi.org/10.1117/12.2674589","url":null,"abstract":"Arteriosclerosis is an independent predictor of cardiovascular disease which is one of the most important causes of human death. Retinal vascular features parameters are important for intelligent diagnosis of arteriosclerosis. These parameters depend on accurate artery and vein (A/V) classification result, but the convolutional neural networks (CNN) used for retinal A/V classification all have some A/V misclassification. In this paper, an optimization method is proposed to optimize the A/V classification of CNN basing on vascular topology. A multi-level lightweight algorithm is proposed to obtain the lightweight information of the vascular skeleton. Using the knowledge of graph theory, the multi-lightweight algorithm preserves the continuous and complete center line structure information. And then, we use multilevel Dijkstra algorithm to estimate the vascular topology on the lightweight vessel skeleton graph, and use the direction algorithm to obtain the vascular directed topology. Lastly, the topology labels algorithm is found on the type of branch nodes to deliver the A/V information along the vascular directed topology to optimize the A/V classification. Experiments clearly show that our optimization method can correct effectively the A/V misclassification.","PeriodicalId":286364,"journal":{"name":"Conference on Computer Graphics, Artificial Intelligence, and Data Processing","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126692634","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":"Research on image encryption algorithm based on one-dimensional logistic and two-dimensional Hénon chaotic system","authors":"Xionghui Wu, Rui Dong, Kuo Yang, Wenli Zhang","doi":"10.1117/12.2674585","DOIUrl":"https://doi.org/10.1117/12.2674585","url":null,"abstract":"Aiming at the problems of high leakage risk and serious information loss that may exist in the encryption and decryption of digital images, an image encryption and decryption algorithm based on chaos theory is proposed. The algorithm introduces both one-dimensional logistic mapping and two-dimensional Hénon mapping. In the encryption process, the digital image is dislocation encrypted by logistic mapping and diffusion encrypted by Hénon mapping, and finally the cipher image is obtained. Compared with other similar algorithms, this algorithm has the advantages of low algorithm complexity and high operation efficiency. The simulation experiment is carried out on the MATLAB platform, and the results show that the algorithm can meet the test standard in the field of digital image encryption.","PeriodicalId":286364,"journal":{"name":"Conference on Computer Graphics, Artificial Intelligence, and Data Processing","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127948875","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":"Research on relation extraction model of overlapping entity based on attention mechanism","authors":"Ling Gan, Xiaobin Liu","doi":"10.1117/12.2674559","DOIUrl":"https://doi.org/10.1117/12.2674559","url":null,"abstract":"Relation extraction refers to get the triple structure composed of semantic relation entity pairs from unstructured text, which is an important part of tasks such as knowledge graphs. At present, the joint extraction model is in common used to avoid the impact of overlapping entities, but there are the following problems. First, the dependencies between text words are not fully considered, and the recognition performance of entities with long spans is low. Insufficient utilization of information makes it difficult to fully extract implicit relationships. In order to address these issues, this text proposes an improved joint learning model, which builds text semantic representation through BERT pre-training, obtains relation type representation as an additional mapping through a multi-label classification method, and sequentially uses multi-layer BiLSTM combined with highway network to obtain semantic information, and combine The attention mechanism obtains the entity location score, and the pointer network is used to obtain the entity location. The experiments of this method on the common dataset of relation extraction task is effective.","PeriodicalId":286364,"journal":{"name":"Conference on Computer Graphics, Artificial Intelligence, and Data Processing","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130522598","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":"A study on the distribution characteristics of the arrival time interval of different ship types","authors":"Lingxi Wu, Daning Xing","doi":"10.1117/12.2674522","DOIUrl":"https://doi.org/10.1117/12.2674522","url":null,"abstract":"Based on the ship data of a certain port in China within one year, this paper analyzes the distribution characteristics of ship arrival time interval of the port within one year by using mathematical statistics method, and the Matlab tool is used to fit the three probability distributions of arrival probability of each ship type to obtain the goodness of fit, sum variance and root mean square difference. Through the analysis of fitting data results of negative exponential distribution, Weibull distribution and Erlang distribution, it can be compared and concluded that: when ship types are not distinguished, the arrival laws of all ships obey the Weibull distribution; When the ship types are distinguishes, container ships, bulk carriers and general cargo ships obey the Weibull distribution, while oil tanker arrival law obeys both the Weibull distribution and the low-order Erlang distribution.","PeriodicalId":286364,"journal":{"name":"Conference on Computer Graphics, Artificial Intelligence, and Data Processing","volume":"310 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131038710","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":"Modeling and analysis of market power regulation in electricity market based on principal-agent mechanism","authors":"Yue Zhao, Jue Yu, Qiuna Cai, Hui Song, YU Peng, Chao Gong, Beiyu Gan, Jianbin Lin","doi":"10.1117/12.2674563","DOIUrl":"https://doi.org/10.1117/12.2674563","url":null,"abstract":"Since the construction of the domestic electricity spot market in 2017, the problem of market power abuse caused by high market concentration and poor demand-side flexibility has gradually become prominent, and the electricity market operators have gradually established a market power regulation system, with bidding price replacement and clearing price replacement as two common market power regulation measures. This paper constructs a market power regulation model based on the principal-agent mechanism and analyzes the market equilibrium and the decision interval of market participants of the above two market power regulation measures. The results show that both market power regulation measures can make the market equilibrium price be the regulated price, but under bidding price replacement regulation the market clearing quantity distorts the market resource allocation and the decision interval of market participants is narrower. Therefore, the clearing price replacement is recommended as market power regulation measures. Finally, this paper solves the optimal strategies of market participants and market operators, and concludes that the optimal strategies of market participants under both market power regulation measures are to make the market regulation ineffective, which verifies the effectiveness of market power regulation measures.","PeriodicalId":286364,"journal":{"name":"Conference on Computer Graphics, Artificial Intelligence, and Data Processing","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128153223","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":"A virtual-real occlusion based on monocular camera","authors":"Xiu Ji, Huamin Yang, Cheng Han, Faming Hou, Yang Bai","doi":"10.1117/12.2674581","DOIUrl":"https://doi.org/10.1117/12.2674581","url":null,"abstract":"Virtual-real occlusion is a key step in augmented reality systems. The traditional virtual-real occlusion method has some problems, such as low accuracy and poor adaptation to the scene. On this basis, this paper proposes a virtual real occlusion method based on monocular camera. Firstly, AKAZE algorithm was combined with Tanimoto similarity estimation to find the optimal pair of feature points, and the relative depth of feature points on adjacent frames was calculated by using the triangulation method in SFM algorithm. Then, the real depth value was obtained by combining the translation scale. Finally, the depth value of virtual and real objects was compared to realize the virtual and real occlusion of monocular camera. The experimental results show that the virtual-real occlusion based on monocular camera is realized and the occlusion accuracy is high.","PeriodicalId":286364,"journal":{"name":"Conference on Computer Graphics, Artificial Intelligence, and Data Processing","volume":"122 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133312069","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":"Study on diesel spray characteristics based on image processing","authors":"Bingbing Liu, Yue Li, Feng Chen","doi":"10.1117/12.2674520","DOIUrl":"https://doi.org/10.1117/12.2674520","url":null,"abstract":"Based on MATLAB, a processing method which can accurately measure the spray characteristic parameters in the image was proposed, including background difference, image enhancement, threshold segmentation, edge detection, morphological operation and other algorithms. The macroscopic characteristic parameters of spray were extracted, and the variation rules of penetration distance and spray cone angle under different factors were analyzed. It is found that under the conditions of 140 MPa and 160 MPa injection pressure, 1 MPa and 2 MPa back pressure, and 0.315 mm and 0.366 mm nozzle diameter, with the increase of spray pressure, penetration distance increases and spray cone angle decreases. The penetration distance and cone angle decrease with the increase of hole diameter. The cone angle increased with the increase of back pressure, and the penetration distance showed the opposite trend.","PeriodicalId":286364,"journal":{"name":"Conference on Computer Graphics, Artificial Intelligence, and Data Processing","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133804229","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":"Design and implementation of a scalable self-adaptive reader-writer lock for multi-core systems","authors":"Bin Cai, Bingcheng Qiu, Jian Yao, Meiman Li, Gang Chen, Jing Wang, Ruilong Wu, Xu Zhang","doi":"10.1117/12.2674755","DOIUrl":"https://doi.org/10.1117/12.2674755","url":null,"abstract":"With the rapid development of multi-core processor technology, parallelization has become the main approach for modern applications to improve throughput and responsiveness. However, the increasing number of processors also poses a challenge to the scalability of parallel program performance. In a traditional single-threaded program, all data is exclusively occupied by one thread, so the performance optimization of the program mainly focuses on the algorithm logic and implementation skills of the program; while in the multi-core system environment, most multi-threaded applications have performance scalability bottleneck. That is, the application cannot make full use of the performance advantages of multiple cores, and its performance decreases as the number of processors increases. The key factor restricting the improvement of performance scalability is often the synchronization mechanism of multi-core systems. Reader-writer lock is a synchronization mechanism that divides the operation to access shared resources or data into reader lock and writer lock, which enables effective cooperation between multiple different threads and ensures that applications can operate in a multicore environment with logical consistency. However, from another perspective, the reader-writer lock mechanism also limits the scalability of concurrent execution of applications. In application scenarios with different reader/writer ratios, the performance of reader-writer locks also differs, restricting the scalability of the performance of applications in multicore systems. Therefore, in a multi-core environment, it is of practical significance to implement a new type of readerwriter lock with scalable performance. This new reader-writer lock may automatically adjust the lock acquisition path according to the read/write ratio of the application scenario. In view of the shortcomings of the current reader-writer locks, this paper proposes a simple, efficient, optimized, and easy-to-implement adaptive reader-writer lock mechanism and interface which is suitable for multi-core environments, as well as application scenarios with different read/, write ratios. This mechanism gives full play to the high performance of multi-core systems and automatically adjusts lock acquisition according to different application scenarios. There are only minor changes to the application by replacing the original reader-writer lock instance and API interface function calls with an adaptive reader-writer lock instance and the API interface function calls for the adaptive reader-writer lock. The mechanism enables good scalability and improves the concurrency and scalability of reader-writer locks in multi-core systems in application scenarios with different read/write ratios. It will be conducive to meeting the growing demand for low latency, high throughput, and high concurrency processors.","PeriodicalId":286364,"journal":{"name":"Conference on Computer Graphics, Artificial Intelligence, and Data Processing","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115939341","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":"Real option analysis in traffic network design with intelligent algorithm","authors":"Xinxin Yu, Shuanwei Cui, Yu Wang, Yi Liu, Xin Yang, Di Wu, Heling Liu, Peng Zhang","doi":"10.1117/12.2674516","DOIUrl":"https://doi.org/10.1117/12.2674516","url":null,"abstract":"In order to ensure the effective use of funds, the government must carry out reasonable traffic planning, in which traffic network design is one of the core contents of traffic planning. The traditional transportation planning has unreasonable factors due to deterministic assumptions. This paper assumes that the demand is a random variable, and then considers the time factor. With the cost recovery and link update as the constraint conditions, the real option is used to solve the problem of the flexibility value of the optimization strategy. The optimization model under uncertainty considering the time factor is given, and the real option is solved by using the LSM method. Genetic algorithm with Monte Carlo is used for network design. The example analysis shows that time factor has a significant impact on network construction decision-making, and real options can effectively describe the flexibility of network construction decision-making.","PeriodicalId":286364,"journal":{"name":"Conference on Computer Graphics, Artificial Intelligence, and Data Processing","volume":"290 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117312976","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":"BP neural network can recognize the image intelligently","authors":"Su Zong","doi":"10.1117/12.2674863","DOIUrl":"https://doi.org/10.1117/12.2674863","url":null,"abstract":"Aiming at the disadvantages of slow convergence speed and unable to reduce recognition errors quickly, BP neural network is used for intelligent recognition of computer images. On this basis, the image recognition model is established by using BP neural network, and its modeling and modeling are carried out. Under the same experimental conditions, different recognition algorithms are compared. The results show that this algorithm has a better convergence speed, can effectively reduce errors, and can effectively improve the recognition rate of images.","PeriodicalId":286364,"journal":{"name":"Conference on Computer Graphics, Artificial Intelligence, and Data Processing","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116761190","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}