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搜索结果: 1-15 共查到知识库 Computer vision相关记录27条 . 查询时间(0.092 秒)
CFEETK, the French-Egyptian Center for the Study of the Temples of Karnak, is celebrating this year the 50th anniversary of its foundation. As a multicultural and transdisciplinary research center, it...
In this work, it is examined the 2D recognition and 3D modelling of concrete tunnel cracks, through visual cues. At the time being, the structural integrity inspection of large-scale infrastructures i...
The paper presents analysis of the orientation of terrestrial laser scanning (TLS) data. In the proposed data processing methodology, point clouds are considered as panoramic images enriched by the de...
Photogrammetry and computer vision are coherent in research content, but since they are come from different subject so there are great differences in researching method and application. The paper revi...
Laser scanning enables to measure a huge number of 3D points in a few time. However, the creation of a 3D model from these data remains an involving work. We introduce a method to get this modeling ta...
Computer Vision Photogrammetry allows archaeologists to accurately record underwater sites in three dimensions using simple twodimensional picture or video sequences, automatically processed in dedica...
This paper describes the use of computer vision techniques to obtain cartography of materials and damages, in a semi-automatic way, of indoor façades of historical buildings, as a support to pl...
Photogrammetric Computer Vision algorithms often deal with complex numerical calculations and complex data structures. For modelling the numerical calculations usually a mathematical model is used. F...
Automatic structuring (feature coding and object recognition) of topographic data, such as that derived from air survey or raster scanning large-scale paper maps, requires the classification of object...
Analyzed the quality and its influence factors of relative orientation of vehicle-based sequence images by comparing with the result obtained from Position & Orientation System using Direct Geo-refere...
Abstract: Multiview geometry is the study of two-dimensional images of three-dimensional scenes, a foundational subject in computer vision. We determine a universal Groebner basis for the multiview id...
Unmanned aerial vehicles (UAV) and micro air vehicles (MAV) are already intensively used in geodetic applications. State of the art autonomous systems are however geared towards the application area ...
研究了一种玉米单倍体籽粒分选方法,可自动分选具有Navajo标记的玉米单倍体籽粒。分选系统主要由种子输送单元、图像采集处理单元、分拣卸料单元及系统控制单元组成。图像采集处理单元根据玉米籽粒胚部及胚乳顶部的颜色特征进行单倍体籽粒判断,并将判断结果发送给系统控制单元。系统控制单元根据该结果协调种子输送单元及分拣卸料单元机械臂的运动,实现籽粒位置定位,同时开启与机械臂末端相应电磁阀,采用气吸方式分离杂合...
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2.27mm、1.96mm和0.54m...
提出了基于计算机视觉的葡萄茎直径测量方法,采用双边滤波降低图像噪声,通过Otsu阈值分割和BloB分析实现葡萄茎与背景的分离,应用基于特征点的定位方法得到茎直径测量位置,由茎直径所包含像素数和尺寸当量计算出茎直径值,从而实现茎直径连续测量。实验和现场应用表明,系统测量重复精度可达±0.5μm。

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