The relation between generalized resolution and NC-resolution is discussed. The proof of the completeness of NC linear resolution is then given. The incompleteness of NC lock resolution is also presented, thus the con...The relation between generalized resolution and NC-resolution is discussed. The proof of the completeness of NC linear resolution is then given. The incompleteness of NC lock resolution is also presented, thus the conclusion in [3] of' a simple completeness- preserving restriction' is shown to be wrong.展开更多
The binocular stereo vision is the lowest cost sensor for obtaining 3D information.Considering the weakness of long‐distance measurement and stability,the improvement of accuracy and stability of stereo vision is urg...The binocular stereo vision is the lowest cost sensor for obtaining 3D information.Considering the weakness of long‐distance measurement and stability,the improvement of accuracy and stability of stereo vision is urgently required for application of precision agriculture.To address the challenges of stereo vision long‐distance measurement and stable perception without hardware upgrade,inspired by hawk eyes,higher resolution perception and the adaptive HDR(High Dynamic Range)were introduced in this paper.Simulating the function from physiological structure of‘deep fovea’and‘shallow fovea’of hawk eye,the higher resolution reconstruction method in this paper was aimed at ac-curacy improving.Inspired by adjustment of pupils,the adaptive HDR method was proposed for high dynamic range optimisation and stable perception.In various light conditions,compared with default stereo vision,the accuracy of proposed algorithm was improved by 28.0%evaluated by error ratio,and the stability was improved by 26.56%by disparity accuracy.For fixed distance measurement,the maximum improvement was 78.6%by standard deviation.Based on the hawk‐eye‐inspired perception algorithm,the point cloud of orchard was improved both in quality and quantity.The hawk‐eye‐inspired perception algorithm contributed great advance in binocular 3D point cloud recon-struction in orchard navigation map.展开更多
Inspired by Bouchiba’s work on generalized Gorenstein flat modules,we introduce the generalized(F,A)-Gorenstein flat modules in this paper.By defining generalizedA-complete flat resolution,a new measure of the dimens...Inspired by Bouchiba’s work on generalized Gorenstein flat modules,we introduce the generalized(F,A)-Gorenstein flat modules in this paper.By defining generalizedA-complete flat resolution,a new measure of the dimension of generalized(F,A)-Gorenstein flat modules is given.When(⊥1,)AAis a complete cotorsion pair,R is a right coherent ring andAcontains injective right R-modules,it is proved that for each M with finite flat dimension,the generalized(F,A)-Gorenstein flat dimension of M is equal to the(F,A)-Gorenstein flat dimension of M.展开更多
文摘The relation between generalized resolution and NC-resolution is discussed. The proof of the completeness of NC linear resolution is then given. The incompleteness of NC lock resolution is also presented, thus the conclusion in [3] of' a simple completeness- preserving restriction' is shown to be wrong.
基金funded by the National Natural Science Foundation of China(No.51979275)Key Laboratory of Spatial‐temporal Big Data Analysis and Application of Nat-ural Resources in Megacities,MNR(No.KFKT‐2022‐05)+3 种基金Open Fund of Key Laboratory of Urban Land Resources Monitoring and Simulation,Ministry of Natural Resources(No.KF‐2021‐06‐115)Open Project Program of State Key Laboratory of Virtual Reality Technology and Systems,Bei-hang University(No.VRLAB2022C10)Jiangsu Province and Education Ministry Co‐sponsored Synergistic Innovation Center of Modern Agricultural Equipment(No.XTCX2002)2115 Talent Development Program of China Agricultural University and Chinese Universities Scientific Fund(No.2021TC105).
文摘The binocular stereo vision is the lowest cost sensor for obtaining 3D information.Considering the weakness of long‐distance measurement and stability,the improvement of accuracy and stability of stereo vision is urgently required for application of precision agriculture.To address the challenges of stereo vision long‐distance measurement and stable perception without hardware upgrade,inspired by hawk eyes,higher resolution perception and the adaptive HDR(High Dynamic Range)were introduced in this paper.Simulating the function from physiological structure of‘deep fovea’and‘shallow fovea’of hawk eye,the higher resolution reconstruction method in this paper was aimed at ac-curacy improving.Inspired by adjustment of pupils,the adaptive HDR method was proposed for high dynamic range optimisation and stable perception.In various light conditions,compared with default stereo vision,the accuracy of proposed algorithm was improved by 28.0%evaluated by error ratio,and the stability was improved by 26.56%by disparity accuracy.For fixed distance measurement,the maximum improvement was 78.6%by standard deviation.Based on the hawk‐eye‐inspired perception algorithm,the point cloud of orchard was improved both in quality and quantity.The hawk‐eye‐inspired perception algorithm contributed great advance in binocular 3D point cloud recon-struction in orchard navigation map.
基金supported by NSF of Guangxi Province of China(Grant No.2020GXNSFAA159120).
文摘Inspired by Bouchiba’s work on generalized Gorenstein flat modules,we introduce the generalized(F,A)-Gorenstein flat modules in this paper.By defining generalizedA-complete flat resolution,a new measure of the dimension of generalized(F,A)-Gorenstein flat modules is given.When(⊥1,)AAis a complete cotorsion pair,R is a right coherent ring andAcontains injective right R-modules,it is proved that for each M with finite flat dimension,the generalized(F,A)-Gorenstein flat dimension of M is equal to the(F,A)-Gorenstein flat dimension of M.
