In order to address the problem of high false alarm rate and low probabilities of infrared small target detection in complex low-altitude background,an infrared small target detection method based on improved weighted...In order to address the problem of high false alarm rate and low probabilities of infrared small target detection in complex low-altitude background,an infrared small target detection method based on improved weighted local contrast is proposed in this paper.First,the ratio information between the target and local background is utilized as an enhancement factor.The local contrast is calculated by incorporating the heterogeneity between the target and local background.Then,a local product weighted method is designed based on the spatial dissimilarity between target and background to further enhance target while suppressing background.Finally,the location of target is obtained by adaptive threshold segmentation.As experimental results demonstrate,the method shows superior performance in several evaluation metrics compared with six existing algorithms on different datasets containing targets such as unmanned aerial vehicles(UAV).展开更多
This article aims to combine the connotation of Tianfu culture with primary school problem-based learning based on Sichuan Tianfu culture,producing problem-based curriculum as the output.We explore problem-based curri...This article aims to combine the connotation of Tianfu culture with primary school problem-based learning based on Sichuan Tianfu culture,producing problem-based curriculum as the output.We explore problem-based curriculum development and practical methods based on primary education.It shows the distinctive and charming regional culture,representing the mutual respect and inclusiveness of Tianfu cultural bonds.It is also the innovative expression of the characteristic schoolbased curriculum of the elementary school.展开更多
基金supported by the National Natural Science Foundation of China (No.U1833203),the National Natural Science Foundation of China (No.62301036)the Aviation Science Foundation (No.2020Z019055001)China Postdoctoral Science Foundation Funded Project (No.2022M720446)。
文摘In order to address the problem of high false alarm rate and low probabilities of infrared small target detection in complex low-altitude background,an infrared small target detection method based on improved weighted local contrast is proposed in this paper.First,the ratio information between the target and local background is utilized as an enhancement factor.The local contrast is calculated by incorporating the heterogeneity between the target and local background.Then,a local product weighted method is designed based on the spatial dissimilarity between target and background to further enhance target while suppressing background.Finally,the location of target is obtained by adaptive threshold segmentation.As experimental results demonstrate,the method shows superior performance in several evaluation metrics compared with six existing algorithms on different datasets containing targets such as unmanned aerial vehicles(UAV).
文摘This article aims to combine the connotation of Tianfu culture with primary school problem-based learning based on Sichuan Tianfu culture,producing problem-based curriculum as the output.We explore problem-based curriculum development and practical methods based on primary education.It shows the distinctive and charming regional culture,representing the mutual respect and inclusiveness of Tianfu cultural bonds.It is also the innovative expression of the characteristic schoolbased curriculum of the elementary school.
