1) Fourier descriptor
傅立叶描绘子
1.
The main technique of the algorithm is that off-line acquire Fourier descriptor of boundary,as standard curve,of the clear iris-image,then search and fit the boundary of aim-image through standard curve for accurately and fast estimating the position of iris.
该算法的基本思想是离线求出清晰虹膜边界曲线的傅立叶描绘子,然后利用标准曲线对目标图像中的边界曲线进行搜寻拟合,对虹膜位置进行判断,实现对其的快速准确定位。
2.
In this paper,a method for objects shape description based on chain code and Fourier descriptor is proposed and its properties are explained and verified by experiments.
论文提出了一种基于边缘轮廓链码的傅立叶描绘子对目标形状的描述方法,分析并实验验证了该方法的各个性质,并讨论了它的实际计算问题。
2) Fourier describer
傅里叶描绘子
1.
And finally, the dominant characteristics are extracted which are composed of representative vectors of faces through analyzing the eigencurves using Fourier describer.
作为对人面特征的描述 ,最后利用傅里叶描绘子对特征曲线进行解析提取关键特征 ,得到人面的表征向量 。
3) Fourier descriptor
傅立叶描述子
1.
Methods The shape,margin,and intensity features including Fourier descriptor,roughness,and ratio of mean intensity were calculated from B-mode ultrasonic benign tumor and malignant tumor images.
方法通过提取良性和恶性肿瘤B超图像的形态特征和灰度特征,包括傅立叶描述子,粗糙度和前后场回声比,组成特征矢量,再用k-均值聚类算法对特征矢量进行分类处理。
2.
A Fourier descriptor based digital watermarking method is proposed for 2-dimensional Engineering drawings.
提出了一种基于傅立叶描述子的二维工程图的数字水印方法。
3.
To describe the characters of aircraft simply and efficiently,moment invariants and Fourier descriptors are combined.
采用矩不变量和傅立叶描述子相结合的表示方法简单而有效地描述飞机的特征；采用了分布存储的ＢＰ神经网络来减少存储量和加速搜索识别过程，并对ＢＰ网络的收敛方法提出了若干措施加速其收敛过程。
4) Fourier descriptors
傅立叶描述子
1.
Then, two measures of shape features, including moment and Fourier descriptors (FD), were computed for each region,and their average value was calculated.
对这些病例按三个步骤进行分析 :首先 ,应用Snake模型提取结节的轮廓线 ;然后 ,计算由轮廓线所围成的区域的Legendre矩和傅立叶描述子(FD) ,并求出平均值 ,最后 ,对测量结果 ,利用SAS软件包进行t检验计算机统计学处理。
2.
A novel method for designing the classifier of multi-dimensional data is proposed,which uses radar chart of multi-statistics to show multidimensional data and applies Fourier descriptors to recognize the radar chart.
基于雷达图表示多维数据的原理,提出一种利用傅立叶描述子识别雷达图形的可视化数据分类新方法。
3.
A new gait recognition method based on Fourier descriptors is presented.
提出了基于傅立叶描述子的步态识别方法。
5) Fourier-based descriptors
傅立叶描述子
1.
Body contour is described by using Fourier-based descriptors.
采用傅立叶描述子描述人体轮廓特征;区别于基于模型的运动特征提取方法,依据人体解剖学的知识获取下肢角度,计算代价较小;采用加权融合规则实现两类特征的融合。
6) generic Fourier descriptor(GFD)
通用傅立叶描述子
1.
In order to evaluate the retrieval performance of RAHD,tests are examined using RAHD and generic Fourier descriptor(GFD).
为了评价RAHD的检索性能,本文将RAHD和目前形状检索领域最为有效的通用傅立叶描述子(Generic Fourier de-scriptor,GFD)进行比较。
补充资料：描绘漆笔
描绘漆笔 描线用的笔。笔毛要细长，定制成大小，粗细不同的品类。工笔画用的小描笔或叶筋笔亦可选用。小，中号的油画笔，笔毛扁齐，适宜涂绘。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条