نتایج جستجو برای: photographic film
تعداد نتایج: 97693 فیلتر نتایج به سال:
Although photographic papers have been manufactured for at least as long as film has been made, there is little in the literature on their image microstructure properties. One of the earliest comprehensive experimental investigations of the “sharpness” (really the MTF) of photographic papers is that reported by Ruth Stapleton.1 One of the general conclusions of her work was that the Modulation ...
The Gates photographic film method for pepsin estimation as developed by Gilman and Cowgill measures an activity corresponding to that determined by the hemoglobin method of Anson and Mirsky rather than that resulting from the use of the gelatin viscosity technique. Therefore, the presence of gelatinase is not a source of great error in the gelatin film procedure.
Silver, one of the precious and noble metals, is used in large quantities for many purposes, particularly in the photographic industry. It has been reported that 25% of the world’s silver needs are supplied by recycling and that 75% of this is obtained from photographic waste. For this reason, the methods applied to recover silver from photographic waste are important in reducing cost and time,...
Das/Cheng/Pai/AAPM//2002 Historical Perspective 1826 Joseph Niepce First Photograph 1836 J. M. Daguerre Concept of developer 1889 Eastman Kodak Cellulose nitrate base for emulsion 1890 Hurter &Driffield Defined the term optical density 1895 Roentgen First Radiograph 1896 Carl Schlussner First glass plate for radiography 1913 Kodak Film on Cellulose nitrate base 1918 Kodak Double emulsion film 1...
Digital photography is a relatively new topic for scholarly study in the area of computer mediated communication. Photographic technologies were only first computerized in the 1990s, but have rapidly supplanted older film technologies for a majority of professional uses. Digital photography has not simply substituted silicon chips for film, however, but has brought about rapid changes throughou...
In April 2007, FUJIFILM introduced ETERNA-RDI for digital intermediate. It is the first film stock in the world, designed specially for use in the digital intermediate workflow. ETERNA-RDI offers a significant improvement over conventional non-specific intermediate film stock, producing fine detail and accurate color from digital image data. New silver halide grain technology prevents spectral ...
HDR Radiance Maps have being widely studied in the last years. In this work we recover HDR Radiance Maps from photographs, using only two shots of the same scene exposed diferently. We also recover film response curves to visualize HDR color images as if they were taken with the photographic film. All the operations used to reconstruct the HDR Radiance Map work on image histograms, the presence...
FUJIFILM Corporation has developed a novel near-infrared reflective film using disk-shaped silver nanoparticles. We estimated the best shape and arrangement of the silver nanodisks to reflect near-infrared rays by simulation. In order to form an optimum structure, we applied the technology which has been used to form silver halide tabular grains in photographic film. Moreover, we have developed...
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