搜索结果: 1-15 共查到“工学 narrow”相关记录27条 . 查询时间(0.218 秒)
THE INTEGRATED SURVEY OF NARROW SPACES AND UNDERGROUND ARCHITECTURE: THE CASE STUDY OF CAMPANA CAVES BAS-RELIEFS
narrow spaces underground architecture terrestrial laser scanning
2019/3/1
Italian Cultural Heritage is rich in fascinating Underground Heritage (UH) to be protected and preserved because of its fragility and historical importance. An accurate and high-resolution 3D model is...
FISHEYE MULTI-CAMERA SYSTEM CALIBRATION FOR SURVEYING NARROW AND COMPLEX ARCHITECTURES
Fisheye Photogrammetry Multi-camera Calibration Accuracy Cultural Heritage Survey Narrow Spaces
2018/6/4
Narrow spaces and passages are not a rare encounter in cultural heritage, the shape and extension of those areas place a serious challenge on any techniques one may choose to survey their 3D geometry....
FISHEYE PHOTOGRAMMETRY: TESTS AND METHODOLOGIES FOR THE SURVEY OF NARROW SPACES
Fisheye Photogrammetry Survey
2017/4/10
The research illustrated in this article aimed at identifying a good standard methodology to survey very narrow spaces during 3D investigation of Cultural Heritage. It is an important topic in today’s...
PANSHARPENING ON THE NARROW VNIR AND SWIR SPECTRAL BANDS OF SENTINEL-2
Fusion Benchmark Image quality indexes Validation QNR Q4 UIQI
2016/11/24
In this paper results from the evaluation of several state-of-the-art pansharpening techniques are presented for the VNIR and SWIR bands of Sentinel-2. A procedure for the pansharpening is also propos...
EXTRACTING ACCURATE AND PRECISE TOPOGRAPHY FROM LROC NARROW ANGLE CAMERA STEREO OBSERVATIONS
DEM/DTM Three-dimensional Application Planetary Mapping Geomorphology Modeling Processing
2016/11/8
The Lunar Reconnaissance Orbiter Camera (LROC) includes two identical Narrow Angle Cameras (NAC) that acquire meter scale imaging. Stereo observations are acquired by imaging from two or more orbits, ...
ROBUST MOSAICKING OF UAV IMAGES WITH NARROW OVERLAPS
Image Mosaicking Geometric correction UAV Images Narrow overlaps
2016/7/5
This paper considers fast and robust mosaicking of UAV images under a circumstance that each UAV images have very narrow overlaps in-between. Image transformation for image mosaicking consists of two ...
ORTHO-RECTIFICATION OF NARROW BAND MULTI-SPECTRAL IMAGERY ASSISTED BY DSLR RGB IMAGERY ACQUIRED BY A FIXED-WING UAS
Ortho-rectification Band-to-band registration Projective transformation
2015/9/10
Miniature Multiple Camera Array (MiniMCA-12) is a frame-based multilens/multispectral sensor composed of 12 lenses with narrow band filters. Due to its small size and light weight, it is suitable to m...
Comparison of photogrammetric applications based on narrow angle line scanners with traditional photogrammetric methods
line scanner camera accuracy orthoimage height models
2015/9/2
By the Pegasus project digital line scanner images taken from an elevation of 20km, with a ground sampling distance (GSD) of
20cm, will be available. The photogrammetric use of such images is compare...
USGS HIGH RESOLUTION TOPO-MAPPING OF MARS WITH MARS ORBITER CAMERA NARROW-ANGLE IMAGES
USGS HIGH RESOLUTION TOPO-MAPPING MARS WITH MARS ORBITER CAMERA NARROW-ANGLE IMAGES
2015/3/16
USGS HIGH RESOLUTION TOPO-MAPPING OF MARS WITH MARS ORBITER CAMERA NARROW-ANGLE IMAGES.
Energy spectra of gravity and capillary waves with narrow initial excitation
Energy spectra gravity capillary waves narrow initial excitation
2011/8/4
Abstract: In this Letter we present a general method for describing discrete modes' generation in a turbulent wave system with narrow initial excitation. The method is based on the mechanism of modula...
Narrow Spectral Linewidth Full Band Tunable Laser Based on Waveguide Ring Resonators with Low Power Consumption
Lasers tunable Silica Waveguides Semiconductor optical amplifiers
2015/6/8
We have developed a widely tunable laser source that uses triple ring resonators with narrow spectral linewidth. A spectral linewidth of less than 100 kHz is obtained for all wavelength channels acros...
Investigation of the Impact of Ultra-Narrow Carrier Spacing on the Transmission of a 10-Carrier 1Tb/s Superchannel
Coherent communications Fiber optics communications
2015/6/8
We investigate the impact of ultra-narrow carrier spacing on the transmission of a 1Tb/s superchannel comprising 10x100Gb/s PM-QPSK carriers. We demonstrate 2200km over installed SMF fibre with a carr...
Self-Coherent Optical Transmission Using a Narrow Linewidth Tunable Slotted Fabry-Perot Laser
Coherent communication Semiconductor lasers
2015/6/4
A narrow linewidth slotted Fabry-Perot laser has been employed in a self-coherent optical transmission system. A comparison of the system performance of the tunable slotted laser with a SG-DBR laser h...
Observation of Narrow linewidth Beat Signal for Millimeter Wave Generation using MZM-Based Flat Comb Generator
Modulators Two-wave mixing
2015/6/4
We showed 100 GHz beat signals and estimated the linewidth of the beat signal. 100 GHz-spaced optical modes were extracted from 12.5 GHz-spaced comb signals. The linewidth was narrower than 1 Hz.
Flattening of narrow and thin stainless steel strips
Plastic forming Ball rolling mill Stainless steel
2009/12/2
Purpose: The purpose of this paper is to evaluate the influence of technological parameters of flattening in the
ball rolling mill on spread and geometrical properties of strips made of stainless ste...