Results 21 to 30 of about 1,684 (181)

Planar object detection under scaled orthographic projection [PDF]

open access: yesPattern Recognition Letters, 2000
Summary: A new method to detect objects under scaled orthographic projections is presented. It also calculates the parameters of the transformations the object has undergone. The method is based on the use of the generalized Hough transform that compares a template with a projected image.
Cózar, J. R., Guil, N., Zapata, E. L.
openaire   +2 more sources

Photometric stereo for strong specular highlights

open access: yesComputational Visual Media, 2018
Photometric stereo is a fundamental technique in computer vision known to produce 3D shape with high accuracy. It uses several input images of a static scene taken from one and the same camera position but under varying illumination. The vast majority of
Maryam Khanian   +2 more
doaj   +1 more source

Solstice orientation of the St Nicholas’ Church monastery Studenica, Serbia [PDF]

open access: yesZbornik Radova: Geografski institut "Jovan Cvijić", 2012
St Nicholas’ Church of the Serbian monastery Studenica was erected in 13th century, before 1230. This is a modest one-nave building with an entrance on the west and the apse on the east side.
Tadić Milutin, Anđelić Sava
doaj   +1 more source

2D-TDOA passive location based on geodetic longitude and latitude

open access: yesTongxin xuebao, 2019
Because of the surface of the earth is not a plane,there may be some errors in the conventional ultra-short wave passive TDOA location method using plane coordinates.In order to use the geodetic longitude and latitude coordinates directly for TDOA ...
Fangli MA, Yang XU, Peng XU
doaj   +2 more sources

A Methodology for Planar Representation of Frescoed Oval Domes: Formulation and Testing on Pisa Cathedral

open access: yesISPRS International Journal of Geo-Information, 2018
This paper presents an original methodology for planar development of a frescoed dome with an oval plan. Input data include a rigorous geometric survey, performed with a laser scanner, and a photogrammetry campaign, which associates a high-quality ...
Andrea Piemonte   +4 more
doaj   +1 more source

Coupling Complementary Strategy to U-Net Based Convolution Neural Network for Detecting Lunar Impact Craters

open access: yesRemote Sensing, 2022
Lunar crater detection plays an important role in lunar exploration, while machine learning (ML) exhibits promising advantages in the field. However, previous ML works almost all used a single type of lunar map, such as an elevation map (DEM) or ...
Yuqing Mao   +3 more
doaj   +1 more source

Research on the visual/inertial integrated carrier landing guidance algorithm

open access: yesInternational Journal of Advanced Robotic Systems, 2018
In this article, we describe a visual/inertial integrated carrier landing guidance algorithm for aircraft carrier landing operations. The airborne vision system and the inertial navigation system are employed as sensors to obtain feature points of ...
Yue Meng, Wei Wang, Zhenxing Ding
doaj   +1 more source

Study on influencing factors and action law of slope stability in end-slope mining field

open access: yesMeikuang Anquan, 2023
Influenced by the coupling effect of “slope stress field” and “roadway group stress field”,the influencing factors of slope stability in end-slope mining field are more complex and the difficulty of slope stability control is significantly increased.
DING Xinpin
doaj   +1 more source

Automated Mobile System for Accurate Outdoor Tree Crop Enumeration Using an Uncalibrated Camera

open access: yesSensors, 2015
This paper demonstrates an automated computer vision system for outdoor tree crop enumeration in a seedling nursery. The complete system incorporates both hardware components (including an embedded microcontroller, an odometry encoder, and an ...
Thuy Tuong Nguyen   +6 more
doaj   +1 more source

Inefficiencies of augmented reality for different sexes and grades in Chinese vocational education

open access: yesScientific Reports, 2023
Nowadays, augmented reality (AR) is becoming more and more prevalent and used in many fields, including education. Previous studies have reported the positive effect of AR to advocate the use of AR in the classroom.
Mingjian Yang   +5 more
doaj   +1 more source

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