Light source position and reflectance estimation from a single view without the distant illumination assumption

2005 ◽  
Vol 27 (4) ◽  
pp. 493-505 ◽  
Author(s):  
K. Hara ◽  
K. Nishino ◽  
K. lkeuchi
Keyword(s):  
Light Source ◽  
Source Position ◽  
Single View

scholarly journals A Fundamental Approach to Detecting the Light Source Position in a Cubical Room by Using Light Sensors and a Database

2000 ◽  
Vol 84 (8) ◽  
pp. 486-491
Author(s):  
Yuji Honda ◽  
Yasuyuki Iwata ◽  
Etsushi Iki ◽  
Naoyuki Shimomura ◽  
Masayoshi Nagata
Keyword(s):  
Light Source ◽  
Source Position

Light Source Position Measurement Technique Applicable in SOI Technology

2008 ◽  
Vol 43 (7) ◽  
pp. 1588-1593 ◽  
Author(s):  
Christian Koch ◽  
JÜrgen Oehm ◽  
Jannik Emde ◽  
Wolfram Budde
Keyword(s):  
Light Source ◽  
Measurement Technique ◽  
Source Position ◽  
Position Measurement ◽  
Soi Technology

scholarly journals Interactive light source position estimation for augmented reality with an RGB-D camera

2015 ◽  
Vol 28 (1) ◽  
pp. e1686 ◽  
Author(s):  
Bastiaan J. Boom ◽  
Sergio Orts-Escolano ◽  
Xin X. Ning ◽  
Steven McDonagh ◽  
Peter Sandilands ◽  
...  
Keyword(s):  
Augmented Reality ◽  
Light Source ◽  
Position Estimation ◽  
Source Position

scholarly journals Prior Compensation Algorithm for Cerenkov Luminescence Tomography From Single-View Measurements

2021 ◽  
Vol 11 ◽  
Author(s):  
Lin Wang ◽  
Xiaowei He ◽  
Jingjing Yu
Keyword(s):  
Light Source ◽  
Imaging System ◽  
Three Dimensional ◽  
Light Flux ◽  
System Matrix ◽  
Full Account ◽  
Single View ◽  
Compensation Algorithm ◽  
Detection Plane ◽  
Calibration Matrix

Cerenkov luminescence tomography (CLT) has attracted much attention because of the wide clinically-used probes and three-dimensional (3D) quantification ability. However, due to the serious morbidity of 3D optical imaging, the reconstructed images of CLT are not appreciable, especially when single-view measurements are used. Single-view CLT improves the efficiency of data acquisition. It is much consistent with the actual imaging environment of using commercial imaging system, but bringing the problem that the reconstructed results will be closer to the animal surface on the side where the single-view image is collected. To avoid this problem to the greatest extent possible, we proposed a prior compensation algorithm for CLT reconstruction based on depth calibration strategy. This method takes full account of the fact that the attenuation of light in the tissue will depend heavily on the depth of the light source as well as the distance between the light source and the detection plane. Based on this consideration, a depth calibration matrix was designed to calibrate the attenuation between the surface light flux and the density of the internal light source. The feature of the algorithm was that the depth calibration matrix directly acts on the system matrix of CLT reconstruction, rather than modifying the regularization penalty items. The validity and effectiveness of the proposed algorithm were evaluated with a numerical simulation and a mouse-based experiment, whose results illustrated that it located the radiation sources accurately by using single-view measurements.

Analysis of the influence on the light source position deviation to the spot

2015 ◽  
Vol 41 (2) ◽  
pp. 111-114
Author(s):  
张嘉钰 ZHANG Jiayu ◽  
李金超 LI Jinchao ◽  
牛虎利 NIU Huli
Keyword(s):  
Light Source ◽  
Source Position

Point Light Source Position Estimation From RGB-D Images by Learning Surface Attributes

2017 ◽  
Vol 26 (11) ◽  
pp. 5149-5159 ◽  
Author(s):  
Sezer Karaoglu ◽  
Yang Liu ◽  
Theo Gevers ◽  
Arnold W. M. Smeulders
Keyword(s):  
Light Source ◽  
Position Estimation ◽  
Source Position ◽  
Point Light Source ◽  
Point Light

scholarly journals The Munich Compact Light Source: Flux Doubling and Source Position Stabilization At a Compact Inverse-Compton Synchrotron X-ray Source.

2018 ◽  
Vol 24 (S2) ◽  
pp. 316-317 ◽  
Author(s):  
Benedikt Gunther ◽  
Martin Dierolf ◽  
Martin Gifford ◽  
Elena Eggl ◽  
Bernhard Gleich ◽  
...  
Keyword(s):  
Light Source ◽  
Source Position ◽  
X Ray ◽  
Inverse Compton ◽  
Compact Light Source

scholarly journals Discomfort Glare Caused by White LED Light Sources-Effect of Light Source Position-

2006 ◽  
Vol 90 (11) ◽  
pp. 822-827 ◽  
Author(s):  
Hiroshi Takahashi ◽  
Takashi Irikura ◽  
Masahiro Toda ◽  
Takayoshi Moriyama
Keyword(s):  
Light Source ◽  
Light Sources ◽  
White Led ◽  
Source Position ◽  
Led Light ◽  
Discomfort Glare ◽  
Effect Of Light
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