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Estimating Photometric Properties from Image Collections
Journal of Mathematical Imaging and Vision, 2013zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Díaz, Mauricio, Sturm, Peter
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Matching photometric-stereo images
Journal of the Optical Society of America A, 1998We introduce a new process of shape estimation through the matching of photometric-stereo images, which are monocular images obtained under different illuminations. If the illumination directions are not far apart, and if the imaged surface is smooth, so that a linear approximation to the reflectance map is applicable, the disparities produced by the ...
José R. A. Torreão, João L. Fernandes
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Photometric Imaging Etalon Spectrometer
Journal of Geophysical Research: Space Physics, 1988A Fabry‐Perot imager that can give spectral image information for the airglow is briefly described. Such an instrument was flown on the shuttle on the STS 41‐G mission. Several spectral images of the limb view atmosphere were obtained, and rotational temperatures are derived for two of these images.
S. B. Mende +5 more
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PHOTOMETRIC AND IMAGING PERFORMANCE
EAS Publications Series, 2002Three topics within GAIA photometry have been selected for discussion here. (1) The sampling scheme of the CCDs has been tuned to serve the various purposes: detection of stars, astrometry, broad- and medium-band photometry, and imaging of a small area around each detected star, but the tuning may not yet be optimal.
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Photometric Correction of Satellite Images
Mapping Sciences and Remote Sensing, 2003Two technologies for the photometric correction of distortions caused by a change in solar illumination and scanning device response are considered. The first technology is based on a rigorous analytic description of the distorting factors and the second is based on a statistical analysis of the control image.
A. Ye. Kuznetsov +2 more
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Photometric specification of images
Journal of Modern Optics, 2009The traditional perspective on specifying a stimulus' luminosity is to measure its emitted light. Because viewing is the reverse of radiating, an alternative approach measures the light as it is received by the eye or other image sensor–incident photometry. From this perspective, I develop a method of specifying stimulus luminosity in terms of the flux
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Photometric correction of retinal images by polynomial interpolation
2009 16th IEEE International Conference on Image Processing (ICIP), 2009This paper presents a photometric restoration technique that automatically corrects shading within retinal images taken with a fundus camera. The proposed technique is based on the observation that the background of retinal images usually shows flat reflectance variations due to its high similarity in color and texture.
Jiang Liu 0001 +7 more
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Separating Subsurface Scattering from Photometric Image
18th International Conference on Pattern Recognition (ICPR'06), 2006While subsurface scattering is common in many real objects, almost all separation algorithms focus on extracting specular and diffuse components from real images. In this paper, we present a model-less approach derived from the bi-directional surface scattering reflectance distribution function (BSSRDF).
Tai-Pang Wu, Chi-Keung Tang
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Concurrent Stereo under Photometric Image Distortions
18th International Conference on Pattern Recognition (ICPR'06), 2006We have improved our Concurrent Stereo Matching (CSM) algorithm, which abandons the search for best matches and determine matches that lie within admissible ranges using a noise model. We estimate photometric deviations between corresponding regions of stereo pairs with photometric transformations and mismatched or occluded regions.
Georgy L. Gimel'farb +3 more
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Integrating Geometric and Photometric Information for Image Retrieval
1999We describe two image matching techniques that owe their success to a combination of geometric and photometric constraints. In the first, images are matched under similarity transformations by using local intensity invariants and semi-local geometric constraints.
Schmid, Cordelia +2 more
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