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SHAPE AND ALBEDO FROM SHADING (SAfS) FOR PIXEL-LEVEL DEM GENERATION FROM MONOCULAR IMAGES CONSTRAINED BY LOW-RESOLUTION DEM
Moon DEM Shape and Albedo from Shading (SAfS) Monocular Image
2016/11/8
Lunar topographic information, e.g., lunar DEM (Digital Elevation Model), is very important for lunar exploration missions and scientific research. Lunar DEMs are typically generated from photogrammet...
The Assumed Light Direction for Perceiving Shape from Shading
Shape-from-shading light-from-above shape perception, Lambertian shading
2016/5/24
Recovering 3D shape from shading is an ill-posed problem that the
visual system can solve only by making use of additional information
such as the position of the light source. Previous research has...
Towards optimal relief representation from Mars imagery by combination of DEM and shape-from-shading
Mars imagery combination DEM shape-from-shading
2016/5/20
Described are experimental results of a first approach towards optimal shaded relief representation of the surface of Mars derived from Viking Orbiter digital imagery. The complex problem addresses ho...
THE DESIGN OF IMAGE TOPOGRAPHIC MAPS AND HILL-SHADING TOPOGRAPHIC MAPS IN THE WESTERN MAPPING PROJECT
GIS product Image topographic Map Hill-shading topographic map Cartography the technological process
2016/3/17
In order to provide users with more diverse varieties of new GIS products that contain richer content, it is proposed that Image topographic maps and hill-shading topographic maps should beproduced as...
COMPARISON BETWEEN SEVERAL SOFTWARES WITH THE FUNCTION OF GENERATING RELIEF SHADING
Relief Shading Digital Elevation Model (DEM) SRTM Color Style Light Source Azimuth Solar Altitude
2016/3/17
Relief shading maps have become a popular and useful means for representing topography in a natural, aesthetic, and intuitive way.In this paper, a comparison among the applications in producingrelief ...
IMAGE-BASED 3D SURFACE RECONSTRUCTION BY COMBINATION OF SPARSE DEPTH DATA WITH SHAPE FROM SHADING AND POLARISATION
Industry Metrology Application Polarization Three-dimensional Reconstruction Close Range Photogrammetry
2015/8/31
In this contribution we describe an image-based framework for 3D surface reconstruction by a combined analysis of reflectance,polarisation, and sparse depth data. An error functional consisting of sev...
IMAGE-BASED 3D SURFACE RECONSTRUCTION BY COMBINATION OF SPARSE DEPTH DATA WITH SHAPE FROM SHADING AND POLARISATION
Industry Metrology Application Polarization Three-dimensional Reconstruction Close Range Photogrammetry
2015/8/28
In this contribution we describe an image-based framework for 3D surface reconstruction by a combined analysis of reflectance,polarisation, and sparse depth data. An error functional consisting of sev...
Shape from Shading is one of the methods used for shape recovery which exploits the fact that surface patches, having different
inclination relative to a light source are imaged with different bright...
De- And Re-shading of Mars Express Hrsc Image Data for Homogenization of Map Relief Shading
Extra-terrestrial Planetary Mars Express HRSC Imagery
2015/7/10
Within the Photogrammetry and Cartography Group (PCG) of the Mars Express HRSC (High Resolution Stereo Scanner Camera)
Co-Investigator Science Team, the main task of which is the development and deri...
Multi-image Shape-from-shading: Derivation of Planetary Digital Terrain Models Using Clementine Images
High-resolution DTM extraterrestrial surfaces reconstruction method
2015/7/8
In many cases, the derivation of high-resolution digital terrain models (DTMs) from planetary surfaces using only conventional
digital image matching is a problem. The matching methods need at least ...
COMPUTING AND MONITORING POTENTIAL OF PUBLIC SPACES BY SHADING ANALYSIS USING LIDAR DATA IN 3D CITY MODELS
public spaces tall buildings
2015/5/7
The paper regards specific context of public spaces in “shadow” of tall buildings located in European cities. Majority of tall buildings in European cities were built in last 15 years. Tall building...
IMPLEMENTATION OF A SINGLE PHOTO SHAPE FROM SHADING METHOD FOR THE AUTOMATIC DTM GENERATION
Shape from shading DTM/DEM Surface reconstruction
2015/3/24
This research work is concerned with the implementation of a shape from shading (SFS) technique for automatically generating a digital
terrain model (DTM) using a single digitized aerial photograph ...
Effects of shading and growth phase on the microbial inactivation by pulsed light
UV-C light non-thermal methods shading effect decontamination inactivation
2014/2/24
Pulsed light is an emerging technology that kills microorganisms using pulses of an intense broad-spectrum light. This work aimed to determine the effect of population density and microbial growth pha...
Extracting surface orientation and surface depth from one or more images is one of the classic problems in computer vision. Shape-from-shading (SFS) deals with the recovery of 3-D shape from a single ...
基于Shape\|from\|Shading的月球表面三维形状恢复算法研究
月球表面 三维形状恢复 Shape-from-ShadinG Lommel-Seel iger反射模型 有限差分
2014/4/24
提出了一种基于Shape\|from\|Shading的月球表面三维形状恢复算法。首先分析了在太 阳光照射下月球表面成像模型，建立了使用Lommel\|Seeliger反射模型描述的反射图方程 。然后用有限差分近似微分运算，将反射图方程所示的一阶变系数线性偏微分方程进行离散 化处理，得到关于表面高度函数的代数方程。进而采用超松弛迭代法进行求解，获得月球表 面三维高度函数值。最后使用合成图像和实际月...