运动目标检测是计算机视觉领域极具挑战性的难题,针对CP3(Co-occurrence Probability based Pixel Pairs)算法的计算量大、实时性差,运动目标遮挡检测不完全等问题提出了改进方法:一种融合SLIC(Simple Linear Iterative Cluster)超像素...运动目标检测是计算机视觉领域极具挑战性的难题,针对CP3(Co-occurrence Probability based Pixel Pairs)算法的计算量大、实时性差,运动目标遮挡检测不完全等问题提出了改进方法:一种融合SLIC(Simple Linear Iterative Cluster)超像素与CP3算法的目标检测算法(Co-occurrence Probability based Super Pixel Pairs)。该算法首先采用SLIC算法将当前帧分割为超像素集合,并对线性相关超像素对的亮度增量差进行了单高斯建模,构建线性相关背景模型。实验结果表明,改进算法大幅缩减了建模时间,使运行速度提高了3倍,对遮挡也有较好的鲁棒性,使目标检测综合指标F-measure提高了5.3%。展开更多
A new 3D coordination polymer,namely,[Yb_3（μ_3-OH）_3（μ_2-OH）（DDLA）_（2.5）（BIPY）]（1,H_2DDLA = 2,2-dipyridyl-4,4-dicarboxylic acid,BIPY = 2,2？-bipyridine）,has been synthesized via solvothermal method. The ...A new 3D coordination polymer,namely,[Yb_3（μ_3-OH）_3（μ_2-OH）（DDLA）_（2.5）（BIPY）]（1,H_2DDLA = 2,2-dipyridyl-4,4-dicarboxylic acid,BIPY = 2,2？-bipyridine）,has been synthesized via solvothermal method. The complex crystallizes in triclinic,space group P1 with a = 7.7339（4）,b = 15.6699（8）,c = 17.2221（9） ？,α = 68.8630（10）,β = 88.1890（10）,γ = 88.1740（10）°,V = 1945.27（17） ？~3,Z = 2,D_c = 2.296 g·cm^3,μ（MoKα） = 1.075 mm^（-1）,F（000） = 1268,S = 1.068,R = 0.0263 and wR = 1.067 for 5176 observed reflections with I 〉 2σ（I）. Compound 1 contains a unique alternating double trinucleate {[Yb_3（μ_3-OH）_2OH]_2}_n chain,in which Yb^（3＋） is bridged through μ_3-OH and μ_2-OH two coordination modes. The alternating double trinucleate chains are further extended into a 3D structure through DDLA^（2-） ligands by different coordination modes. The photoluminescence spectra show 1 is highly sensitized by the characteristic emission of Yb^（3＋） in the NIR region.展开更多
文摘运动目标检测是计算机视觉领域极具挑战性的难题,针对CP3(Co-occurrence Probability based Pixel Pairs)算法的计算量大、实时性差,运动目标遮挡检测不完全等问题提出了改进方法:一种融合SLIC(Simple Linear Iterative Cluster)超像素与CP3算法的目标检测算法(Co-occurrence Probability based Super Pixel Pairs)。该算法首先采用SLIC算法将当前帧分割为超像素集合,并对线性相关超像素对的亮度增量差进行了单高斯建模,构建线性相关背景模型。实验结果表明,改进算法大幅缩减了建模时间,使运行速度提高了3倍,对遮挡也有较好的鲁棒性,使目标检测综合指标F-measure提高了5.3%。
基金financially supported by the National Natural Science Foundation of China(21503183)Dr.Scientific research Foundation of Yanan university(YDBK2015-02)
文摘A new 3D coordination polymer,namely,[Yb_3（μ_3-OH）_3（μ_2-OH）（DDLA）_（2.5）（BIPY）]（1,H_2DDLA = 2,2-dipyridyl-4,4-dicarboxylic acid,BIPY = 2,2？-bipyridine）,has been synthesized via solvothermal method. The complex crystallizes in triclinic,space group P1 with a = 7.7339（4）,b = 15.6699（8）,c = 17.2221（9） ？,α = 68.8630（10）,β = 88.1890（10）,γ = 88.1740（10）°,V = 1945.27（17） ？~3,Z = 2,D_c = 2.296 g·cm^3,μ（MoKα） = 1.075 mm^（-1）,F（000） = 1268,S = 1.068,R = 0.0263 and wR = 1.067 for 5176 observed reflections with I 〉 2σ（I）. Compound 1 contains a unique alternating double trinucleate {[Yb_3（μ_3-OH）_2OH]_2}_n chain,in which Yb^（3＋） is bridged through μ_3-OH and μ_2-OH two coordination modes. The alternating double trinucleate chains are further extended into a 3D structure through DDLA^（2-） ligands by different coordination modes. The photoluminescence spectra show 1 is highly sensitized by the characteristic emission of Yb^（3＋） in the NIR region.
