搜索结果: 1-15 共查到“工学 appearance”相关记录22条 . 查询时间(0.085 秒)
Appearance of Persistent Scatterers for Different TerraSAR-X Acquisition Modes
TerraSAR-X Persistent Scatterer appearance acquisition modes
2016/1/25
Since beginning of 2008 products of TerraSAR-X have been available for the scientific community and the great performance of this
satellite system has been proven by encouraging results presented du...
OVER 80 YEARS SINCE THE FIRST ROMANIAN PARTICIPATION TO THE ISP/ISPRS CONGRESSES AND OVER 40 YEARS SINCE THE APPEARANCE OF THE PHOTOGRAMMETRIC BULLETIN
Communication Joint- education Aerial Photogrammetry Data Integration Social Science Satellite Remote Sensing History National
2015/12/22
The first aerial images used for civil purposes were taken in Romania in 1916, using self-made photographic cameras. Amongst the recent achievements we mention the first aerial digital photogrammetric...
Semi-Supervised Incremental Learning of Hierarchical Appearance Models
Detection Building Structure, Interpretation Classifi cation Incremental Learning Recognition
2015/12/8
We propose an incremental learning scheme for learning a class hierarchy for objects typically occurring multiple in images. Given oneexample of an object that appears several times in the image, e.g....
Appearance Based 3D Object Recognition Using IPCA-ICA
Principal component analysis (PCA) Independent component analysis (ICA)
2015/11/23
Fast incremental non Gaussian directional analysis (IPCA-ICA) is proposed as a linear technique for recognition [1]. The basic idea is to compute the principal components as sequence of image vectors ...
Influence of the Substrate Colour on the Visual Appearance of Gilded Sculptures
colorimetry spectrophotometry SEM image synthesis materials sciences archæ ology
2015/11/13
Measurements, optical simulations, samples realization of gilded surfaces were made for studying the visual appearance and the substrate color influence of gilded surfaces mainly encountered in ...
ACQUISITION AND REPRODUCTION OF SURFACE APPEARANCE IN ARCHITECTURAL ORTHOIMAGES
Orthoimage Multi-View Stereo Photometric Stereo Surface Appearance BRDF Capture Physically Based Render
2015/3/3
Software tools for photogrametric and multi-view stereo reconstruction are nowadays of generalized use in the digitization of architectural cultural heritage. Together with laser scanners, these are w...
Modelling the appearance of heritage metallic surfaces
Cultural Heritage Imaging 3D model Photogrammetry Photometric stereo Rendering Specularity
2014/6/30
Polished metallic surfaces exhibit a high degree of specularity, which makes them difficult to reproduce accurately. We have applied two different techniques for modelling a heritage object known as t...
Human Group Activity Analysis with Fusion of Motion and Appearance Information
Human Group Activity Activity Analysis Feature Fusion
2011/10/12
Human activity analysis is an important and challenging task in video content analysis and understanding. In this paper, we focus on the activity of small human group, which involves countable persons...
Actor-independent action search using spatiotemporal vocabulary with appearance hashing
Actor-independent patiotemporal vocabulary
2011/3/18
In recent years, face recognition in the unconstrained environment has attracted increasing attentions, and a few methods have been evaluated on the Labeled Faces in the Wild (LFW) database. In the un...
CONTOUR TRACKING VIA ON-LINE DISCRIMINATIVE APPEARANCE MODELING BASED LEVEL SETS
Contour tracking level set appearance modeling curve evolution
2011/1/18
A novel level set method based on on-line discriminativeappearance modeling (DAMLSM) is presented for contourtracking. In contrast with traditional level set models whichemphasize the intensity consis...
基于柴油机局部时段振动加速度的缸内燃烧状况（Combustion Estimation Based on Vibration Acceleration Signal from Start of Combustion to Peak Pressure Appearance Timing）
柴油机 缸内燃烧状况 振动加速度 特征参数
2010/12/29
柴油机燃烧峰值压力出现前燃烧过程对应的局部振动信号与缸内燃烧状况密切相关。对比分析了195型及495T型柴油机在该局部时段内振动加速度、缸内压力及其各阶导数的时域波形，基于波形间的相关性，提出了利用振动加速度信号的拐点推测燃烧过程特征点的方法。对比不同工况时局部时段内的缸内压力、压升率、振动加速度及压力升高加速度的时域波形及频谱能量，发现振动加速度信号最大时域波动量及特定频带的能量与缸内燃烧状况密...
鲜食玉米果穗外观品质分级的计算机视觉方法（Appearance Quality Grading for Fresh Corn Ear Using Computer Vision）
鲜食玉米 果穗 外观品质 分级
2010/12/28
在HSI颜色模型下，通过计算机视觉检测技术实现对鲜食玉米果穗外观品质分级。提出垂直投影法确定秃尖位置并去除秃尖。对H值进行双向一次微分运算以实现缺陷的识别。在此基础上获取果穗缺陷比、穗长、果穗最大直径、长宽比和矩形度作为外观品质特征参数，并以此为输入向量构建广义回归神经网络对果穗外观品质分级。试验结果表明：秃尖位置、穗长和果穗最大直径的平均误差分别为2.27mm、1.96mm和0.54m...
Active illumination and appearance model for face alignment
AIA alignment illumination face modeling sub-spaces active appearance
2010/7/31
Illumination conditions have an explicit effect on the performance of face recognition systems. In particular, varying the illumination upon the face imposes such complex effects that the identificati...
The influence of certain ecological factors on the appearance of hazel grouse Bonasa bonasia in Bohinj
Hazel Grouse ecological factors pasture
2009/11/26
The authors of the paper studied the influence of certain ecological factors on the appearance of Hazel Grouse Bonasa bonasia in eight study areas in Bohinj. The study areas included 143 census points...
两阶段聚类分析在烤烟外观质量评价中的应用（Application of Two-step Cluster Analysis for Appearance Quality Evaluation of Flue-cured Tobacco）
烤烟 外观质量 两阶段聚类分析
2009/8/11
应用两阶段聚类法对云南省大理州14个主栽烤烟品种C3F和C3L 2个等级的中部烟叶外观质量进行聚类分析，并应用多元方差分析对聚类效果进行了检验。结果表明，产地和品种对烤烟外观质量的影响较小，并将100 个烤烟样品外观质量分为3 个类型；明确了各类型烟叶外观质量的重要性状、变异特点和类型间的分类特性；其聚类分析结果与烤烟外观质量的实际表现相吻合，因而两阶段聚类分类结果客观、合理、准确、可靠。