image processing, negatives One source of high quality digital image data is scanned photographic negatives, which can be processed to produce high quality color images. The scanned data must be inverted and processed to adjust for the film and scene characteristics. This report details a proposed approach to processing scanned negatives to produce output color images suitable for viewing on a ...

A new approach for the compensation of temporal brightness variations (commonly referred to as flicker) in archived film sequences is presented. The proposed method uses fundamental principles of photographic image registration to provide adaptation to temporal and spatial variations of picture brightness. The main novelty of this work is the use of spatial segmentation to identify regions of h...

We present a novel approach for the compensation of temporal brightness variations (commonly referred to as flicker) in archived film sequences. The proposed method 1is motivated by fundamental principles of photographic image registration and provides a substantial level of adaptation to temporal but also spatial variations of picture brightness. Additionally our scheme provides an efficient m...

Focusing on the internationally significant photographic collections at National Science and Media Museum (Bradford, UK), this article explores central questions: What counts as ‘scientific’ in a museum dedicated to history of photography (as well film, television, digital media)? And what is place science technology? The set UK Canada offers framework for thinking about relationship between hi...

A tetrahedral-anvil press has been developed that permits x-ray diffraction powder measurements at pressures to 75 kb and temperatures to 1000°C. A counting technique, rather than photographic film, is used for x-ray detection. Sample tetrahedra of compressed LiH, boron, and boron-filled plastic are used in place of the pyrophyllite customarily used for this purpose. Two possible entrance pupil...

The Zone System has been the established methodology for precisely gauging and managing contrast in photography since the 1940s. In the contemporary digital era, only a small number of mostly film photographers expose their images according to original Zone technique with its quantitative scale for engaging differences in illumination. Nevertheless the principles and parameters of Zone methodol...

Small angle X-ray scattering (SAXS) is a potentially powerful method for obtaining structural information from biological molecules in solution. The use of this technique in the laboratory has hitherto been limited by the long exposures necessary to obtain patterns on photographic film. Multi-wire area detectors, due to their high efficiency and absence of noise, enable patterns to be collected...

At the light microscope level of resolution several chemicals have been shown to cause "fogging" of photographic film. Among these the principal reducing agents are glutathione, cysteine (1), hydrogen sulfide gas, and hydroquinone in animal tissue (17) . The -SH groups of the first three chemicals were shown to be responsible for the effect . Chemographic reactions of any kind at the electron m...

Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) are widely used in material science, metallurgy sicence and life science researches. TEM is an imaging technique where a beam of electrons is focused onto a specimen causing an enlarged version to appear on a fluorescent screen or layer of photographic film. SEM is a technique of electron microscope to produce high re...

The Digital Micromirror Device (DMD) has made great strides in both performance and reliability. Each device consists of more than 500,000 individually addressable micromirrors. Digital Light Processing technology, based on the DMD, has been used in such diverse products as projection displays with film-like projected images and photographic-quality printers. Reliability testing of the DMD has ...