鉴于全景图像拼接所需的重叠比例大,拼接时间长,提出了一种小重叠区单目红外全景图像的快速拼接算法。首先,待拼接的红外图像序列通过搭载于云台的红外图像探测器绕轴定点均匀拍摄采集得到,之后在感兴趣区域(region of interest,ROI)内...鉴于全景图像拼接所需的重叠比例大,拼接时间长,提出了一种小重叠区单目红外全景图像的快速拼接算法。首先,待拼接的红外图像序列通过搭载于云台的红外图像探测器绕轴定点均匀拍摄采集得到,之后在感兴趣区域(region of interest,ROI)内使用改进加速的小重叠区红外图像配准算法得到相邻图像的配准信息,确定相邻图像的重叠区域,然后统计重叠区域的亮度信息进行亮度差异调节以获得整体图像的视觉一致性,亮度调整后的重叠区域图像通过使用三角函数权重的方式进行图像融合,最后对剩余的待拼接图像重复上述步骤,得到过渡自然、视觉一致性良好的超宽视野红外全景图。在Ambarella平台上的实测结果表明,该方法能够成功拼接重叠区域较小(6%)的红外图像,拼接速度快,实时性高,具有良好的应用前景和实用价值。展开更多
In slab column-shear wall structures,both the whole structure′s seismic behavior and failure mode are greatly influenced by the distribution of horizontal seismic forces between slab-column and shear wall.In this pap...In slab column-shear wall structures,both the whole structure′s seismic behavior and failure mode are greatly influenced by the distribution of horizontal seismic forces between slab-column and shear wall.In this paper,a pushover analysis of topical slab column-shear wall structure was carried out,the seismic shear force that the slab-column and shear wall should undertake was worked out,the influences of plastic internal force redistribution and structure stiffness characteristic value on horizontal seismic distribution were studied and the calculation formula was given.The analysis results showed that with the yield of the shear walls,the story shear force was undertaken by slab-columns correspondingly increased while with the decrease of characteristic value of stiffness of a structure,and the horizontal seismic force was undertaken by slab-columns correspondingly decreased.According to the code,the design of horizontal force distribution may be cause insecurity problems,so it is necessary to give the distribution law of horizontal seismic forces in slab-column shear wall structures as the supplement to the corresponding regulation of the Code.展开更多
文摘鉴于全景图像拼接所需的重叠比例大,拼接时间长,提出了一种小重叠区单目红外全景图像的快速拼接算法。首先,待拼接的红外图像序列通过搭载于云台的红外图像探测器绕轴定点均匀拍摄采集得到,之后在感兴趣区域(region of interest,ROI)内使用改进加速的小重叠区红外图像配准算法得到相邻图像的配准信息,确定相邻图像的重叠区域,然后统计重叠区域的亮度信息进行亮度差异调节以获得整体图像的视觉一致性,亮度调整后的重叠区域图像通过使用三角函数权重的方式进行图像融合,最后对剩余的待拼接图像重复上述步骤,得到过渡自然、视觉一致性良好的超宽视野红外全景图。在Ambarella平台上的实测结果表明,该方法能够成功拼接重叠区域较小(6%)的红外图像,拼接速度快,实时性高,具有良好的应用前景和实用价值。
文摘In slab column-shear wall structures,both the whole structure′s seismic behavior and failure mode are greatly influenced by the distribution of horizontal seismic forces between slab-column and shear wall.In this paper,a pushover analysis of topical slab column-shear wall structure was carried out,the seismic shear force that the slab-column and shear wall should undertake was worked out,the influences of plastic internal force redistribution and structure stiffness characteristic value on horizontal seismic distribution were studied and the calculation formula was given.The analysis results showed that with the yield of the shear walls,the story shear force was undertaken by slab-columns correspondingly increased while with the decrease of characteristic value of stiffness of a structure,and the horizontal seismic force was undertaken by slab-columns correspondingly decreased.According to the code,the design of horizontal force distribution may be cause insecurity problems,so it is necessary to give the distribution law of horizontal seismic forces in slab-column shear wall structures as the supplement to the corresponding regulation of the Code.
