Accurately mapping the surface rivers is important in ecological environment monitoring and disaster prevention. The development of remote sensing technology and computer vision greatly improves the efficiency of this task. However, there are few methods that map the rivers from an image directly. The existing automatic river mapping methods usually had two successive stages: waterbody extraction and flow-path extraction, where the latter methods were very dependent on the waterbody masks generated by the former methods. Errors in waterbody masks caused breaks and redundancies in the extracted graphs. This paper proposed RiverMapper, which mapped the rivers step-wisely without dividing into two stages. Following the directions and actions predicted by the convolution neural network, RiverMapper walked along the rivers step by step and cropped the fixed-size image patches at each step for segmentation. Final river graphs were constructed by the waterbody mask patches and those tracks generated by RiverMapper. We applied RiverMapper on optical remote sensing images containing the Changjiang River and the Huanghe River. Without the degradation of the performance on waterbody extraction, RiverMapper outperformed other methods in terms of the local topological and geometrical similarity between the predicted and the ground-truth river graphs.
{"title":"RiverMapper: step-wisely mapping the surface rivers on optical remote sensing images","authors":"Peng Zhang, H. Pan, Ke Yang, Yong Dou, Xin Niu","doi":"10.1117/12.2639214","DOIUrl":"https://doi.org/10.1117/12.2639214","url":null,"abstract":"Accurately mapping the surface rivers is important in ecological environment monitoring and disaster prevention. The development of remote sensing technology and computer vision greatly improves the efficiency of this task. However, there are few methods that map the rivers from an image directly. The existing automatic river mapping methods usually had two successive stages: waterbody extraction and flow-path extraction, where the latter methods were very dependent on the waterbody masks generated by the former methods. Errors in waterbody masks caused breaks and redundancies in the extracted graphs. This paper proposed RiverMapper, which mapped the rivers step-wisely without dividing into two stages. Following the directions and actions predicted by the convolution neural network, RiverMapper walked along the rivers step by step and cropped the fixed-size image patches at each step for segmentation. Final river graphs were constructed by the waterbody mask patches and those tracks generated by RiverMapper. We applied RiverMapper on optical remote sensing images containing the Changjiang River and the Huanghe River. Without the degradation of the performance on waterbody extraction, RiverMapper outperformed other methods in terms of the local topological and geometrical similarity between the predicted and the ground-truth river graphs.","PeriodicalId":336892,"journal":{"name":"Neural Networks, Information and Communication Engineering","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128989534","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}
Wendong Li, Biying Jiang, Yao Deng, Yao Li, Xingchen Lu
In the wideband transmission digital beamforming technology, due to the aperture crossing phenomenon, we cannot simply replace the delay with digital phase shifting. Commonly used fractional delay methods include the windowing method, VFD filter and other methods, but the fractional delay filter often has a serious hardware resource consumption, which is not conducive to the realization of multi-channel beamforming on a single chip. In this paper, a time-delay beamforming method based on DDS parameter control is proposed, and the system structure of emission beamforming is further optimized on the basis of which to save more resource consumption.
{"title":"An optimized digital delay structure for wideband signal transmitting","authors":"Wendong Li, Biying Jiang, Yao Deng, Yao Li, Xingchen Lu","doi":"10.1117/12.2639122","DOIUrl":"https://doi.org/10.1117/12.2639122","url":null,"abstract":"In the wideband transmission digital beamforming technology, due to the aperture crossing phenomenon, we cannot simply replace the delay with digital phase shifting. Commonly used fractional delay methods include the windowing method, VFD filter and other methods, but the fractional delay filter often has a serious hardware resource consumption, which is not conducive to the realization of multi-channel beamforming on a single chip. In this paper, a time-delay beamforming method based on DDS parameter control is proposed, and the system structure of emission beamforming is further optimized on the basis of which to save more resource consumption.","PeriodicalId":336892,"journal":{"name":"Neural Networks, Information and Communication Engineering","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130535415","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}
Porosity, as one of the important reservoir physical parameters, plays an important role in reservoir evaluation. Considering the actual work needs, finding a low-cost and efficient method to obtain high-precision porosity has become an important topic of reservoir evaluation. Due to the complex nonlinear mapping relationship and timing characteristics between logging parameters and porosity, a model of deep learning is proposed to predict the porosity of carbonate reservoir according to the existing logging data. Firstly, on the basis of core analysis and geological and logging data, data preprocessing is carried out for carbonate reservoir logging data, including core depth homing, logging data standardization and normalization. The second step is to establish the prediction model of reservoir parameters by using proper learning samples. The third step is to evaluate the predicted effect of porosity model and modify the model by using superposition diagram method and error statistics method. The calculation demerit of the final model is compared with the traditional results.The comparison results in the last step show that the prediction results of reservoir parameters by neural network are more accurate than those by traditional methods.
{"title":"Porosity prediction of carbonate reservoir based on neural network","authors":"Liyan Yang, Xiangdong Peng","doi":"10.1117/12.2640460","DOIUrl":"https://doi.org/10.1117/12.2640460","url":null,"abstract":"Porosity, as one of the important reservoir physical parameters, plays an important role in reservoir evaluation. Considering the actual work needs, finding a low-cost and efficient method to obtain high-precision porosity has become an important topic of reservoir evaluation. Due to the complex nonlinear mapping relationship and timing characteristics between logging parameters and porosity, a model of deep learning is proposed to predict the porosity of carbonate reservoir according to the existing logging data. Firstly, on the basis of core analysis and geological and logging data, data preprocessing is carried out for carbonate reservoir logging data, including core depth homing, logging data standardization and normalization. The second step is to establish the prediction model of reservoir parameters by using proper learning samples. The third step is to evaluate the predicted effect of porosity model and modify the model by using superposition diagram method and error statistics method. The calculation demerit of the final model is compared with the traditional results.The comparison results in the last step show that the prediction results of reservoir parameters by neural network are more accurate than those by traditional methods.","PeriodicalId":336892,"journal":{"name":"Neural Networks, Information and Communication Engineering","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124209173","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}
Due to its dynamic and changing network topology structure, AdHoc network can carry out wireless transmission of data, voice, video and other services in harsh conditions. Therefore, whether in the military field, or in the field of civil or commercial field, Ad Hoc network has great development prospects.The access protocol of Ad Hoc network wireless channel has always been the key and difficult point of scholars at home and abroad. System throughput, channel utilization rate and system delay all depend on the protocol used.Based on this, this paper mainly expounds the main problems facing Ad Hoc channel access, computer simulation experiment of CSMA protocol with monitoring function, computer simulation experiment of CSMA protocol with three simulation mechanism, hope that the computer simulation can be helpful through the simulation test for such researchers.
{"title":"BTMC-CSMA protocol analysis with handshake mechanism in wireless Ad Hoc network","authors":"Jianjun Hao","doi":"10.1117/12.2639648","DOIUrl":"https://doi.org/10.1117/12.2639648","url":null,"abstract":"Due to its dynamic and changing network topology structure, AdHoc network can carry out wireless transmission of data, voice, video and other services in harsh conditions. Therefore, whether in the military field, or in the field of civil or commercial field, Ad Hoc network has great development prospects.The access protocol of Ad Hoc network wireless channel has always been the key and difficult point of scholars at home and abroad. System throughput, channel utilization rate and system delay all depend on the protocol used.Based on this, this paper mainly expounds the main problems facing Ad Hoc channel access, computer simulation experiment of CSMA protocol with monitoring function, computer simulation experiment of CSMA protocol with three simulation mechanism, hope that the computer simulation can be helpful through the simulation test for such researchers.","PeriodicalId":336892,"journal":{"name":"Neural Networks, Information and Communication Engineering","volume":"127 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132477670","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}
Zhan Shi, Yutu Liang, Bo Li, Xingnan Li, Xiaozhi Deng, Jiangang Lu
Since signal transmission is performed on a 220V/330V low voltage power line, there is a series of problems such as distribution transformer blocking the carrier signal, more load access leading to significant signal reduction, inherent pulse interference of power line. Therefore, the channel transmission characteristics of power network must be considered when power lines are used to transmit carrier communication signals with high frequency and low energy. On the premise of analyzing the necessity of power line carrier communication performance index evaluation, the channel input impedance characteristics, channel noise and interference characteristics, channel attenuation characteristics are studied. On this basis, the power line carrier communication equipment performance index evaluation system based on fuzzy comprehensive evaluation method is studied.
{"title":"Research on equipment performance index evaluation system for HPLC","authors":"Zhan Shi, Yutu Liang, Bo Li, Xingnan Li, Xiaozhi Deng, Jiangang Lu","doi":"10.1117/12.2639328","DOIUrl":"https://doi.org/10.1117/12.2639328","url":null,"abstract":"Since signal transmission is performed on a 220V/330V low voltage power line, there is a series of problems such as distribution transformer blocking the carrier signal, more load access leading to significant signal reduction, inherent pulse interference of power line. Therefore, the channel transmission characteristics of power network must be considered when power lines are used to transmit carrier communication signals with high frequency and low energy. On the premise of analyzing the necessity of power line carrier communication performance index evaluation, the channel input impedance characteristics, channel noise and interference characteristics, channel attenuation characteristics are studied. On this basis, the power line carrier communication equipment performance index evaluation system based on fuzzy comprehensive evaluation method is studied.","PeriodicalId":336892,"journal":{"name":"Neural Networks, Information and Communication Engineering","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131777891","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}
A low power consumer capacitor-less low dropout regulator (LDO) with supper class AB CMOS operational transconductance amplifier (OTA) has been proposed in this paper. The OTA of this design is based on the combination of class AB differential input stages and local common-mode feedback which provides additional common-mode sensing techniques thus to obtain a high common mode rejection ratio (CMRR). Local common-mode feedback (LCMFB) is applied to various class AB differential input stages, leading to different class AB OTA topologies. The presented LDO is fabricated in a 0.18 um standard CMOS process. The circuit consumes a quiescent current of 1.37 uA, regulating the output at 1.0 V with maximum output current of 600 mA from a voltage supply of 1.2V. It achieved full range stability from 1mA to 100 mA load current at a maximum 100pf load capacitor.
{"title":"A low power consumer capacitor-less low dropout regulator with super class AB CMOS OTA","authors":"Shengming Huang, Yu-Min Mu, Xiaocha Wang","doi":"10.1117/12.2639174","DOIUrl":"https://doi.org/10.1117/12.2639174","url":null,"abstract":"A low power consumer capacitor-less low dropout regulator (LDO) with supper class AB CMOS operational transconductance amplifier (OTA) has been proposed in this paper. The OTA of this design is based on the combination of class AB differential input stages and local common-mode feedback which provides additional common-mode sensing techniques thus to obtain a high common mode rejection ratio (CMRR). Local common-mode feedback (LCMFB) is applied to various class AB differential input stages, leading to different class AB OTA topologies. The presented LDO is fabricated in a 0.18 um standard CMOS process. The circuit consumes a quiescent current of 1.37 uA, regulating the output at 1.0 V with maximum output current of 600 mA from a voltage supply of 1.2V. It achieved full range stability from 1mA to 100 mA load current at a maximum 100pf load capacitor.","PeriodicalId":336892,"journal":{"name":"Neural Networks, Information and Communication Engineering","volume":"166 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127555845","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}
Electrostatic potential testing is an important parameter for characterization of the electrostatic source. A non-contact electrostatic potential test device is designed for zreo-point drift, interference effect, narrow frequency range and other common problems in the current non-contact electrostatic potential test device in this paper. The above problems such as zreo-point drift, interference effect and narrow frequency range are solved. The basic principle of non-contact electrostatic potential test is introduced. The hardware and software design and implementation process of non-contact electrostatic potential test device are described in detail. The test verification and application of the device are given. Finally the key technical problems solved in the design implementation process are summarized.
{"title":"Design and realization of non-contact electrostatic potential test device","authors":"Yi-yong Lin, Z. Xu, T. Song, Mei Zhao, Yibei Chen","doi":"10.1117/12.2640686","DOIUrl":"https://doi.org/10.1117/12.2640686","url":null,"abstract":"Electrostatic potential testing is an important parameter for characterization of the electrostatic source. A non-contact electrostatic potential test device is designed for zreo-point drift, interference effect, narrow frequency range and other common problems in the current non-contact electrostatic potential test device in this paper. The above problems such as zreo-point drift, interference effect and narrow frequency range are solved. The basic principle of non-contact electrostatic potential test is introduced. The hardware and software design and implementation process of non-contact electrostatic potential test device are described in detail. The test verification and application of the device are given. Finally the key technical problems solved in the design implementation process are summarized.","PeriodicalId":336892,"journal":{"name":"Neural Networks, Information and Communication Engineering","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130988200","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}
Aiming at the high cost of existing IT operation and maintenance services, an intelligent scheduling system based on task duration was designed. By studying the separable task scheduling in a homogeneous system environment, for a homogeneous star network, comparative analysis of the relationship between the busy state to the idle state, the continuous transmission of transmission tasks, the release time of mixed timing constraints and the time of receiving tasks, is used to This builds a separable task scheduling model. The genetic algorithm is used to optimally solve the scheduling model. Considering the existence and universality of heterogeneous platforms in the actual parallel and distributed system environment, the task scheduling situation of the processor in the heterogeneous star network environment is researched and analyzed. . According to the mixed timing constraints, a task scheduling optimization model in a heterogeneous system environment is constructed, and the genetic algorithm is improved to solve the problem. Due to the enlargement of the problem search space, the local search operator is used to converge the algorithm. The results show that compared with several existing scheduling algorithms, the algorithm proposed in this paper can obtain a better scheduling scheme, so the designed intelligent scheduling system is practical.
{"title":"Design of intelligent scheduling system for IT operation and maintenance services considering task duration","authors":"Haitao Zhang, Xuyong Wang","doi":"10.1117/12.2639380","DOIUrl":"https://doi.org/10.1117/12.2639380","url":null,"abstract":"Aiming at the high cost of existing IT operation and maintenance services, an intelligent scheduling system based on task duration was designed. By studying the separable task scheduling in a homogeneous system environment, for a homogeneous star network, comparative analysis of the relationship between the busy state to the idle state, the continuous transmission of transmission tasks, the release time of mixed timing constraints and the time of receiving tasks, is used to This builds a separable task scheduling model. The genetic algorithm is used to optimally solve the scheduling model. Considering the existence and universality of heterogeneous platforms in the actual parallel and distributed system environment, the task scheduling situation of the processor in the heterogeneous star network environment is researched and analyzed. . According to the mixed timing constraints, a task scheduling optimization model in a heterogeneous system environment is constructed, and the genetic algorithm is improved to solve the problem. Due to the enlargement of the problem search space, the local search operator is used to converge the algorithm. The results show that compared with several existing scheduling algorithms, the algorithm proposed in this paper can obtain a better scheduling scheme, so the designed intelligent scheduling system is practical.","PeriodicalId":336892,"journal":{"name":"Neural Networks, Information and Communication Engineering","volume":"12258 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131265958","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}
In this paper, the main purpose is to study how to reduce PAPR in the OFDM-IM system. According to some methods used in the OFDM system, have a further exploration analysis in OFDM-IM system. Firstly, it is about the OFDM-IM system introduction and the effect of PAPR on the OFDM-IM system. Secondly, SLM and PTS are studied in many aspects in the direction of OFDM, like the choice of phase and subcarrier grouping patterns. When phase factor is {1, -1}, the method used in OFDM is borrowed in PTS to improve the calculation time of results in the OFDM-IM system. In addition, the comparative analysis of PAPR under the combination of SLM-PTS and SLM-PTS methods is also studied. It can be concluded that the new method combines the characteristics of both, and its running time is less than that of traditional PTS and the performance of PAPR is less than that of traditional single SLM.
{"title":"The optimization of PAPR reduction in the OFDM-IM system","authors":"Xing Ma","doi":"10.1117/12.2640509","DOIUrl":"https://doi.org/10.1117/12.2640509","url":null,"abstract":"In this paper, the main purpose is to study how to reduce PAPR in the OFDM-IM system. According to some methods used in the OFDM system, have a further exploration analysis in OFDM-IM system. Firstly, it is about the OFDM-IM system introduction and the effect of PAPR on the OFDM-IM system. Secondly, SLM and PTS are studied in many aspects in the direction of OFDM, like the choice of phase and subcarrier grouping patterns. When phase factor is {1, -1}, the method used in OFDM is borrowed in PTS to improve the calculation time of results in the OFDM-IM system. In addition, the comparative analysis of PAPR under the combination of SLM-PTS and SLM-PTS methods is also studied. It can be concluded that the new method combines the characteristics of both, and its running time is less than that of traditional PTS and the performance of PAPR is less than that of traditional single SLM.","PeriodicalId":336892,"journal":{"name":"Neural Networks, Information and Communication Engineering","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131400296","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}
In this paper, we propose the recommendation algorithm PNCF for neural networks. We designed a pre-training task for a distributed representation of embeddings based on many-to-many information. We used the word2vec technique in natural language processing to implement the embedding of users and items. We also constructed a brand-new video website tagauthor pre-training dataset. The code in this paper was implemented in PyTorch and is publicly available on GitHub (github.com/jannchie/ PNCF).
{"title":"PNCF: neural collaborative filtering based on pre-trained embedding","authors":"Jianqi Pan, M. Yamamura, Atsushi Yoshikawa","doi":"10.1117/12.2639163","DOIUrl":"https://doi.org/10.1117/12.2639163","url":null,"abstract":"In this paper, we propose the recommendation algorithm PNCF for neural networks. We designed a pre-training task for a distributed representation of embeddings based on many-to-many information. We used the word2vec technique in natural language processing to implement the embedding of users and items. We also constructed a brand-new video website tagauthor pre-training dataset. The code in this paper was implemented in PyTorch and is publicly available on GitHub (github.com/jannchie/ PNCF).","PeriodicalId":336892,"journal":{"name":"Neural Networks, Information and Communication Engineering","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131674635","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}
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