Results 221 to 230 of about 27,083 (265)
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[1990] Proceedings Third International Conference on Computer Vision, 1991
The author compares the photometric effects of motion (which is defined as the variation of a point's imaged intensity as a consequence of motion) and the geometric effects of motion (which is defined as the variation in projected surface geometry as a consequence of motion).
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The author compares the photometric effects of motion (which is defined as the variation of a point's imaged intensity as a consequence of motion) and the geometric effects of motion (which is defined as the variation in projected surface geometry as a consequence of motion).
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Classification of Photometric Factors Based on Photometric Linearization
2006We propose a new method for classification of photometric factors, such as diffuse reflection, specular reflection, attached shadow, and cast shadow. For analyzing real images, we utilize the photometric linearization method which was originally proposed for image synthesis. First, we show that each pixel can be photometrically classified by the simple
Yasuhiro Mukaigawa +2 more
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The Photometric Sensibility of the Eye and the Precision of Photometric Observations
Journal of the Optical Society of America, 1931In this paper data are presented to show that for maximum photometric sensibility the brightness of the photometric field should be adjusted so that a brightness level of from 20 to 30 millilamberts is secured. At this brightness the difference fraction ΔB/B has a value of 1.37 percent.
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GAIA Photometric System: Simulation of Photometric Observations
Astrophysics and Space Science, 2002We present a software package developed for modelling of the GAIA photometric observations. The modelling procedure is very flexible and fully controlled via the parameter file. Therefore, configuration of the GAIA telescopes and photometric systems, as well as the object samples under investigation, can be adjusted easily.
Viktoras Deveikis +2 more
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Physics Today, 1950
Photometric devices, especially those intended for the measurement of color, must be highly sensitive to small differences if they are to give useful information.
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Photometric devices, especially those intended for the measurement of color, must be highly sensitive to small differences if they are to give useful information.
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Photometric Quantitation of Haemagglutination
Scandinavian Journal of Haematology, 1967A modified technique for photometric quantitation of haemagglutination was employed in experiments with anti‐A test sera and Arcell suspensions. The agglutinates and the free cells were separated by simple sedimentation. As an absolute separation was impossible in this way, no exact estimation of percentage agglutination could be made.
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Photometric Displacement Transducer
IEEE Transactions on Biomedical Engineering, 1969Measurements of variations in intensity of light reflected from a moving surface provide a method for quantitating displacement. A system to monitor displacements of a few microns is easily constructed. This technique has wide application in biological experiments, offering the advantage of probeless displacement monitoring.
G W, Timm, W E, Bradley
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IEEE International Conference on Computational Photography (ICCP), 2013
We introduce a framework for outdoor photometric stereo utilizing natural environmental illumination. Our framework extends beyond existing photometric stereo methods intended for laboratory environments to encompass robust outdoor operation in the real world. In this paper, we motivate our framework, describe the components of its processing pipeline,
Lap-Fai Yu +4 more
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We introduce a framework for outdoor photometric stereo utilizing natural environmental illumination. Our framework extends beyond existing photometric stereo methods intended for laboratory environments to encompass robust outdoor operation in the real world. In this paper, we motivate our framework, describe the components of its processing pipeline,
Lap-Fai Yu +4 more
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Photometric and Colorimetric Tests
2014The chapter describes the tests that can be performed on lamps and luminaires. The first two sections of the chapter report photometric tests and measurements, starting from the measurement of luminous flux. There are two principal methods for measuring total luminous flux or radiant flux. One incorporates an integrating sphere (Sect. 1), and the other
Mercatelli L, Giannini A, Sani E
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