搜索结果: 16-30 共查到“工学 PCA”相关记录113条 . 查询时间(0.078 秒)
CLASSIFICATION OF PHOTOGRAMMETRIC POINT CLOUDS OF SCAFFOLDS FOR CONSTRUCTION SITE MONITORING USING SUBSPACE CLUSTERING AND PCA
Scaffolding components Photogrammetric point clouds Subspace clustering PCA Classification
2016/7/28
This paper presents an approach for the classification of photogrammetric point clouds of scaffolding components in a construction site, aiming at making a preparation for the automatic monitoring of ...
基于PCA与KPCA的多光谱遥感影像特征提取对比研究
PCA KPCA 特征提取
2016/12/6
多光谱遥感影像特征提取是保证图像分类结果精度的关健，文中介绍了多光谱遥感影像特征提取的两种主要方法通过实验证明:KPCA较PCA具有更好的数据压缩和降维效果，影像特征提取效果优势明显。
基于太赫兹波段内的光谱分析技术以及主成分特性分析与反向前馈神经网络建模,提出了一种转基因大豆鉴别方法.从光谱数据中提取累计方差贡献率达到97.582%的前8种主成分因子,并将其作为输入源导入神经网络模型,通过剔除冗余数据、降低数据维数,所建立的神经网络模型能准确识别校验集.该方法可以实现转基因大豆的快速、无损检测,在农业安全领域有广泛的应用前景.
基于PCA的相机响应函数模型标定算法
相机响应函数 低参数经验模型 主成分分析
2016/12/17
许多计算机视觉应用的算法都需要对拍摄场景高动态范围的幅亮度信息进行精确的测量，成像系统的相机响应函数能够建立拍摄图像强度信息与场景辐亮度之间的严格映射关系，是高动态范围图像融合的关键技术。文中分析相机响应曲线的共同特点，结合相机响应函数固有的约束条件，建立相机响应函数的理论空间模型。首先，利用主成分分析法对已有的相机响应数据库进行分析，结合相机响应函数的约束条件建立响应函数的低参数经验模型；然后，...
FUSION OF REMOTE SENSING IMAGE BASE ON THE PCA+ATROUS WAVELET TRANSFORM
Image fusion High spatial resolution wavelet decomposition Assessment criteria PCA
2015/12/31
On the basis that the PCA transformation and additive wavelet transformation have their own advantages and disadvantages——higher spatial resolution can be acquired from the PCA transformation; however...
CORN FPAR ESTIMATING WITH NEAR AND SHORTWAVE INFRARED BANDS OF HYPERSPECTRAL DATA BASED ON PCA
NDVI RVI PCA Hyperspectral Infrared Shortwave FPAR Estimating
2015/12/30
FPAR (Fraction of Absorbed Photosynthetically Active Radiation) is a key parameter in the study on ecosystem function, crop growth monitoring, and so on, it is important to estimate FPAR accurately. B...
PROTECTED COASTAL AREA (PCA):WHY? HOW?
protected coastal area biodiversity eco-system marine pollution fishery resources protected ecology-fishery zone software application
2015/12/29
The Adriatic Sea, its islands and coast are one of the biggest ecological and economical riches of Croatian Republic (RoC). Unfortunately, because of general carelessness in past, bad regulations, con...
QUANTITATIVE ESTIMATION OF DESERTIFICATION DEGREE BASED ON PCA FUSION AND SVM USING CBERS-02B
support vector machine (SVM) data fusion CBERS-02B soil desertification information PCA
2015/12/23
Soil Desertification has severely threatened inner stability and sustainable development in arid areas, so extracting soil desertification information based on remote sensing and mastering its spatial...
Registration of Spatial data Based on PCA
Registration PCA Coordinate Transformation Spatial Data
2015/12/2
Registration of spatial data based on PCA is advanced in the paper. The principle is that principal components of spatial data set are changed with the coordinate system. For two spatial data sets of ...
Eigenvectors of data matrices play an important role in many computational problems, ranging from signal processing to machine learning and control. For instance, algorithms that compute positions of ...
Pca based on bottom classification applied in remote sensing bathymetry of shallow seawat
Multi-spectral Remote sensing Bathymetry model,
2015/8/20
The submarine terrain in shallow sea is one of the important factors of the ocean environment, and has important meanings for
coastal economics and military activities. For the mapping of the vast in...
Face recognition plays an important role in biometrics base personal identification. The need for reliable recognition and identification
of interacting users is obvious. The biometrics recognition ...
DETECTION OF SHIP TARGETS IN POLARIMETRIC SAR DATA USING 2D-PCA DATA FUSION
Polarimetric data fusion 2D-PCA
2015/5/7
Data fusion has lately received a lot of attention as an effective technique for several target detection and classification applications in different remote sensing areas. In this work, a novel dat...
Attempt to define morphological parameters enabling sex determination of Ips typographus (Linaeus, 1758) (Coleoptera: Curculionidae: Scolytinae) using PCA and CLU
spruce bark beetle principal components analysis cluster analysis
2015/5/5
There are only two known methods for determining the sex of Ips typographus (L.) – dissection that cannot be used with live beetles and by distinguishing between the density of the hairs on the head, ...
