搜索结果: 1-13 共查到“Shape from shading”相关记录13条 . 查询时间(0.041 秒)
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...
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...
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 ...
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 ...
Shape-from-Shading under Near Point Lighting and Partial views for Orthopedic Endoscopy
Shape-from-Shading Near Point Lighting
2009/12/22
Bone reconstruction using endoscopy is important for computer aided minimally invasive orthopedic surgery. During surgery an endoscope consisting of a camera and one or more light sources is inserted ...
A Multi-Image Shape-from-Shading Framework for Near-Lighting Perspective Endoscopes
Multi-Image Shape-from-Shading Near-Lighting Perspective Endoscopes
2009/12/22
This article formulates a near-lighting shape-from-shading problem with a pinhole camera (perspective projection) and presents a solution to reconstruct the Lambertian surface of bones using a sequenc...
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 ...
通过对由医疗成像设备获取的二维灰度图像进行形状重建，得到的三维立体原型能帮助医学诊断人员确诊病情。介绍了Shape from Shading的实现原理和扫描电镜成像系统的简单构成，提出了一种基于线性逼近的用于解决SEM反射映射函数的实现方法，并将之应用于红血细胞的三维图像重构，得到的细胞图形非常接近其真实形状。
A perspective shape-from-shading method using fast sweeping numerical scheme
shape-from-shading reflectance map viscosity solution
2011/5/5
Shape-from-shading (SFS) is an approach of 3-D shape reconstruction from only one image. A new perspective SFS method is proposed in this paper. Firstly, a reflectance map equation under perspective p...
INTERPRETATION OF TOPOGRAPHIC DATA FROM 'SHAPE FROM SHADING' METHOD, APPLICATION IN VILLAGARCíA DE CAMPOS CASTLE
Cultural Heritage Interpretation Method Digital Modelling Three-dimensional.
2014/4/25
Generating digital products allowing the assessment and interpretation of Cultural Heritage is a key task in conservation processes.
Thus a variety of (Shape from X) methods have been developed thro...