助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   star acquisition 的翻译结果: 查询用时:0.182秒
图标索引 在分类学科中查询
所有学科
航空航天科学与工程
更多类别查询

图标索引 历史查询
 

star acquisition
    很抱歉,暂未找到该词条的译词。
相关语句
  “star acquisition”译为未确定词的双语例句
     Method of star acquisition from star image
     一种星图中星的提取方法
短句来源
     Star cluster grouping from the candidate star centers speeds up the procedure of star acquisition.
     以初步位置为基础的星图像素聚类加速了星图中星的获取过程。
短句来源
     For simulated star image where the exact location of stars is known, the average sum of invert square distance between a declared star center and the nearest ideal star center, as the merit figure of star acquisition algorithms, is calculated under different noisy conditions, thus optimizing LSSVM parameters.
     以模拟星图中星的精确中心位置为参考,计算在不同噪声条件下测量位置与最近参考位置的距离平方倒数和的均值,优化 LSSVM 参数。
短句来源
     Based on the figure of merit to objectively evaluate the performance of star acquisition approach,a number of experiments are carried out for the simulated star images.
     基于所定义的性能评价指标,对模拟星图进行了星图获取的实验验证。
短句来源
  相似匹配句对
     Star
     星展台
短句来源
     star
     星
短句来源
     New star acquisition algorithm and optimization
     一种新的星图中星获取算法
短句来源
     Method of star acquisition from star image
     一种星图中星的提取方法
短句来源
     (4)Acquisition;
     (4)收购;
短句来源
查询“star acquisition”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
没有找到相关例句


A new star acquisition algorithm i.e., extremal point approach is proposed. The method, by making use of Least Square Support Vector Machine (LSSVM) well fits the star image intensity surface over the neighborhood, and determines the maximal extremal points on the fitted surface, and then obtains possible star centers. Star cluster grouping from the candidate star centers speeds up the procedure of star acquisition. For simulated star image where the exact location...

A new star acquisition algorithm i.e., extremal point approach is proposed. The method, by making use of Least Square Support Vector Machine (LSSVM) well fits the star image intensity surface over the neighborhood, and determines the maximal extremal points on the fitted surface, and then obtains possible star centers. Star cluster grouping from the candidate star centers speeds up the procedure of star acquisition. For simulated star image where the exact location of stars is known, the average sum of invert square distance between a declared star center and the nearest ideal star center, as the merit figure of star acquisition algorithms, is calculated under different noisy conditions, thus optimizing LSSVM parameters. To maximize the merit figure, when the kernel size is 5×5 pixels, the optimal configuration of parameters (σ2, γ) for the LSSVM with Gaussian kernel is (17, 1.25). The proposed algorithm has similar efficiency to vector method while providing higher merit figure.

提出一种新的星图中星获取算法——极值点法,利用最小二乘向量机(LSSVM)对原始星图的局部区域作灰度曲面最佳拟合,在拟合曲面上求解灰度极大值的像素点,获得星的中心点的初步位置。以初步位置为基础的星图像素聚类加速了星图中星的获取过程。以模拟星图中星的精确中心位置为参考,计算在不同噪声条件下测量位置与最近参考位置的距离平方倒数和的均值,优化 LSSVM 参数。为获得最佳星获取性能,卷积核为5×5像素的高斯LSSVM参数(σ2, γ)取(17,1.25)。该极值点法与矢量法相比,效率相当,但性能更好。

Based on the similarities between star and small target,a new method of star extraction from star image comprised of high pass filter and dynamic threshold was proposed to deal with the star acquisition. The star image was filtered by the high pass filter with a threshold fixed before-hand to obtain possible star pixels. Owing to the abundance of illusive objects, the possible star pixels were acquired by using dynamic threshold. The simulation results illustrate that the vector technique...

Based on the similarities between star and small target,a new method of star extraction from star image comprised of high pass filter and dynamic threshold was proposed to deal with the star acquisition. The star image was filtered by the high pass filter with a threshold fixed before-hand to obtain possible star pixels. Owing to the abundance of illusive objects, the possible star pixels were acquired by using dynamic threshold. The simulation results illustrate that the vector technique and our algorithm have same precision with the absence of noise. Once noise is added onto star image, the precision of proposed method is much higher than that of the vector technique, while the processing efficiency of them remains the same. Thus the proposed method has strong anti-noise ability.

在分析星图中的星像和小目标图像中的小目标像的共性的基础上,提出了一种将高通滤波和动态阈值相结合的星图中星的提取方法,来完成星图处理过程中较为耗时的星图提取工作.即滤波后先确定阈值,再通过高通滤波提取图像的候选点,由于虚假目标太多,需要通过动态阈值对候选点进行二次提取.仿真结果表明这种方法与矢量法相比,当不给星图加背景噪声时,两种方法提取精度相当.一旦给星图加上噪声,矢量法的提取精度迅速下降,提出的方法的提取精度远远高于矢量法,而提取时间却与矢量法相差无几.因此提出的方法表现出较强的抗噪能力.

A new star extraction method,using cubic facet model to approximate locally the image intensity function,and then making decisions regarding the maximal extremum point locations on the well-fitted surface,is presented.With the possible star centers,the star acquisition procedure is speeded up.Based on the figure of merit to objectively evaluate the performance of star acquisition approach,a number of experiments are carried out for the simulated star images.The results demonstrate that the...

A new star extraction method,using cubic facet model to approximate locally the image intensity function,and then making decisions regarding the maximal extremum point locations on the well-fitted surface,is presented.With the possible star centers,the star acquisition procedure is speeded up.Based on the figure of merit to objectively evaluate the performance of star acquisition approach,a number of experiments are carried out for the simulated star images.The results demonstrate that the proposed method is efficient and robust.

利用小面模型对原始星图的局部区域作灰度曲面最佳拟合。在拟合曲面上进行灰度极大值像素点的位置估计,初步得到星图中星的中心位置,从而加速星图中星的获取过程。基于所定义的性能评价指标,对模拟星图进行了星图获取的实验验证。研究表明,该算法具有较强的适应性。

 
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关star acquisition的内容
在知识搜索中查有关star acquisition的内容
在数字搜索中查有关star acquisition的内容
在概念知识元中查有关star acquisition的内容
在学术趋势中查有关star acquisition的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社