查询词典 sift

SIFT（Scale Invariant Feature Transform） local feature is chosen because of its scale invariance and the property of accurate key-point localization.The Euclidean distance between different SIFT feature vectors is defined as the measure of similarity to get the pre-matched key-point pairs.The affine transform model is used to realize the registration.In order to get the accurate affine transform parameter,the principal of affine transform error is used to get rid of mismatched key-point pairs from the pre-matched pairs.

该方法选取具有良好尺度、旋转不变性以及精确特征点定位能力的SIFT局部特征，使用其特征向量间的欧氏距离作为相似性度量进行特征点匹配，并依据仿射变换误差准则去除奇异匹配特征点对，采用仿射变换的几何模型，实现了遥感图像的快速自动配准。

Using SUSAN formed SIFT and ladder-image pyramid structure to achieve the same scale,new algorithm establish a unified set of over-determined equations of all match points.The over-determined linear equations coefficient matrix can be simplified to drop dimension,so simplify the structure of the augmented matrix and whose dimension is reduced to half.

研究了一种多目标识别算法，该算法用SUSAN角点形成SIFT特征点，采用阶梯图像金字塔结构实现尺度不变，为所有匹配点建立统一的超定线性方程组并对该方程组系数矩阵进行简化使其维数降低一半，得到增广矩阵。

In this paper, a color based on SIFT feature point extraction algorithm, and focuses on a wide range of color model algorithm performance.

针对这一问题，提出了一种基于彩色的SIFT 特征点提取算法，并着重分析了多种彩色模型对算法性能的影响。

This paper presented a robust image watermarking algorithm utilizing the stability of SIFT points and the features of DWT.

利用数字图像SIFT(scale invariant feature transform)特征的稳定性和小波变换的特性，提出了一种抗仿射变换和剪切的鲁棒水印算法。

Finally we established a Sift retrieval platform and experimented the retrievability of Sift on different kinds of images.

文章先针对两个已有案例进行了深入研究，并在此基础上对Sift在图像检索中的应用进行了可行性分析和总结。

Sift feature extraction algorithm, which has many versions, which is one of them can be used.

详细说明： sift特征提取算法，该算法已经有很多版本，这是其中的一款，可以用用。

One of the largest foreign cattle with C# write sift splicing process and of great value.

一个国外的大牛用C＃写的sift拼接程序，很有价值。

In this paper, a algorithm is developed for anchor shot detection based on face detection and SIFT.

提出了一种基于人脸检测与SIFT特征点匹配的播音员镜头自动检测算法。

SIFT the MATLAB source code, from the University of California, prepared by Dr.

详细说明： SIFT的MATLAB源码，由加州大学的一位博士编写。

The experimental results indicate that the improved algorithm can describe feature points in a larger region, and can reduce mismatch probability of experimental images from 19% to 11% because global context vectors based on global shape information are induced to the SIFT vectors based local Information.

实验结果表明，由于在基于局部信息的SIFT向量中加入基于全局形状信息的全局向量，使得当特征点的尺度较小时，可以借助更大邻域范围内的信息对其进行描述，从而降低了由于局部信息相似而造成的误匹配的概率。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。