【摘 要】
:
Soil organic carbon(SOC) is an important component of farming systems and global carbon cycle. Accurately estimating SOC stock is of great importance for assessing soil productivity and modeling globa
论文部分内容阅读
Soil organic carbon(SOC) is an important component of farming systems and global carbon cycle. Accurately estimating SOC stock is of great importance for assessing soil productivity and modeling global climate change. A newly built 1:50 000 soil databa
其他文献
With the growing popularity of Internet applications and the widespread use of mobile Internet, Internet traffic has maintained rapid growth over the past two decades. Internet Traffic Archival System
Visual saliency is an important cue in human visual system to identify salient region in the image;it can be useful in many applications including image retrieval,object recognition,image segmentation
以协方差鉴别学习(covariance discriminative learning,CDL)为基础,对图像集的隶属于黎曼流形之上的协方差矩阵进行双向降维。将降维后的协方差矩阵与有效的黎曼度量,如对数欧氏距离(log euclidean distance,LED)结合得到一个核函数来将这些协方差矩阵映射到欧式空间中进行分类。改进的CDL方法由于减少了协方差矩阵的维数,从而降低了计算复杂度并提高了
In this paper,we propose a refined local learning scheme to reconstruct a high resolution(HR)face image from a low resolution(LR)observation.The contribution of this work is twofold.Firstly,multi-dire
Log-polar transformation(LPT)is widely used in image registration due to its scale and rotation invariant properties.Through LPT,rotation and scale transformation can be made into translation displace
Real-time collaborative editing(RTCE)can support a group of people collaboratively work from distributed locations at the same time.However,consistency maintenance is one key challenge when different
为了满足路表三维形态精确重构和路面病害检测与特征提取的要求,针对路面激光三维成像系统,结合数字图像滤波处理技术,提出了一种双相标准差滤波法与基于组合结构元素的级联形态学滤波算法相结合的去噪方法,即先对路面三维数据进行双相标准差滤波处理,然后再对其进行基于组合结构元素的级联形态学滤波处理。对整个三维数据、行数据、列数据3个方面进行去噪效果分析。研究结果表明:双相标准差滤波法能够很好地滤除高信噪比情况
针对目标跟踪中的物体遮挡、光照影响、杂波扰动等问题,设计一种基于最小费用流建模的跟踪器.该跟踪器把整数规划与最小费用流模型相结合,将目标跟踪问题转变为可解的线性规划问题.与其他同类型跟踪器相比,该跟踪器具有更好的跟踪准确性.实验结果表明:运用最小费用流模型的跟踪器可以对复杂环境下的多个目标进行稳定跟踪,提升了跟踪的鲁棒性.
Soil organic matter(SOM) content is one of the most important indicators of the sustainability of soil. To maintain sustainable soil utilization and management in fragile Hani terraced field, it is me
Determining how agricultural management practices affect soil phosphorus(P) over the winter may further our understanding of the soil P cycle under specific environmental conditions in eastern Canada.