为了实现工业相机对动态目标的准确、实时跟踪,提出了基于卡尔曼滤波的算法。通过创建背景模型来估计出当前背景,进而得到前景区域,并对前景区域进行相关处理,最后通过计算补集得到更新后的背景。此方法能根据不同场景信息调整前景与背...为了实现工业相机对动态目标的准确、实时跟踪,提出了基于卡尔曼滤波的算法。通过创建背景模型来估计出当前背景,进而得到前景区域,并对前景区域进行相关处理,最后通过计算补集得到更新后的背景。此方法能根据不同场景信息调整前景与背景阈值,减弱背景区域造成的噪声影响,实时地根据场景变化快速、自动更新背景,并对每一位置的像素进行背景估计。通过在VS2010平台上结合JAI软件开工具包(Software Development Kit,SDK)调用Halcon函数库实现了卡尔曼滤波动态跟踪,其中JAI SDK用于开发千兆网相机,几乎支持所有千兆网相机。实验结果表明,该算法能够实现对目标的实时动态跟踪,实时性强,准确度高。展开更多
We assessed habitat preference and population status of the Sichuan Jay (Perisoreus internigrans),a poorly known Chinese endemic bird,at two sites (Zhuoni and Jiuzhaigou) in the Qinghai-Tibetan plateau between 2001 an...We assessed habitat preference and population status of the Sichuan Jay (Perisoreus internigrans),a poorly known Chinese endemic bird,at two sites (Zhuoni and Jiuzhaigou) in the Qinghai-Tibetan plateau between 2001 and 2004.Mean group size was 3.8 jays.Each group occupied a mean home range of 42.0 ha during the breeding season,and the mean internest distance was 2.7 km.These data indicated that the jays used less than ten percent of the available habitats and occurred at an overall density of only 0.6 jays per km2.Radio-tracked Sichuan Jays had a strong preference for mature montane coniferous forests and avoided areas dominated by shrubs,while the utilization of young conifers,grassland,and human residential habitat types did not differ significantly from the values expected from the home-range availabilities of these habitats generally.展开更多
文摘为了实现工业相机对动态目标的准确、实时跟踪,提出了基于卡尔曼滤波的算法。通过创建背景模型来估计出当前背景,进而得到前景区域,并对前景区域进行相关处理,最后通过计算补集得到更新后的背景。此方法能根据不同场景信息调整前景与背景阈值,减弱背景区域造成的噪声影响,实时地根据场景变化快速、自动更新背景,并对每一位置的像素进行背景估计。通过在VS2010平台上结合JAI软件开工具包(Software Development Kit,SDK)调用Halcon函数库实现了卡尔曼滤波动态跟踪,其中JAI SDK用于开发千兆网相机,几乎支持所有千兆网相机。实验结果表明,该算法能够实现对目标的实时动态跟踪,实时性强,准确度高。
基金supported by grants of the National Natural Science Foundation of China(30270202,39870103)Chinese Academy of Sciences(kscx2-yw-z-1021)
文摘We assessed habitat preference and population status of the Sichuan Jay (Perisoreus internigrans),a poorly known Chinese endemic bird,at two sites (Zhuoni and Jiuzhaigou) in the Qinghai-Tibetan plateau between 2001 and 2004.Mean group size was 3.8 jays.Each group occupied a mean home range of 42.0 ha during the breeding season,and the mean internest distance was 2.7 km.These data indicated that the jays used less than ten percent of the available habitats and occurred at an overall density of only 0.6 jays per km2.Radio-tracked Sichuan Jays had a strong preference for mature montane coniferous forests and avoided areas dominated by shrubs,while the utilization of young conifers,grassland,and human residential habitat types did not differ significantly from the values expected from the home-range availabilities of these habitats generally.
