Color Image Display with Black-and-White Film

2020 ◽  
pp. 187-210
Author(s):  
Guo-Guang Mu ◽  
Zhi-Liang Fang ◽  
Xu-Ming Wang ◽  
Yu-Guang Kuang
Author(s):  
Harry Schaefer ◽  
Bruce Wetzel

High resolution 24mm X 36mm positive transparencies can be made from original black and white negatives produced by SEM, TEM, and photomicrography with ease, convenience, and little expense. The resulting 2in X 2in slides are superior to 3¼in X 4in lantern slides for storage, transport, and sturdiness, and projection equipment is more readily available. By mating a 35mm camera directly to an enlarger lens board (Fig. 1), one combines many advantages of both. The negative is positioned and illuminated with the enlarger and then focussed and photographed with the camera on a fine grain black and white film.Specifically, a Durst Laborator 138 S 5in by 7in enlarger with 240/200 condensers and a 500 watt Opale bulb (Ehrenreich Photo-Optical Industries, Inc., New York, NY) is rotated to the horizontal and adjusted for comfortable eye level viewing.


Mathematics ◽  
2020 ◽  
Vol 8 (12) ◽  
pp. 2258
Author(s):  
Madhab Raj Joshi ◽  
Lewis Nkenyereye ◽  
Gyanendra Prasad Joshi ◽  
S. M. Riazul Islam ◽  
Mohammad Abdullah-Al-Wadud ◽  
...  

Enhancement of Cultural Heritage such as historical images is very crucial to safeguard the diversity of cultures. Automated colorization of black and white images has been subject to extensive research through computer vision and machine learning techniques. Our research addresses the problem of generating a plausible colored photograph of ancient, historically black, and white images of Nepal using deep learning techniques without direct human intervention. Motivated by the recent success of deep learning techniques in image processing, a feed-forward, deep Convolutional Neural Network (CNN) in combination with Inception- ResnetV2 is being trained by sets of sample images using back-propagation to recognize the pattern in RGB and grayscale values. The trained neural network is then used to predict two a* and b* chroma channels given grayscale, L channel of test images. CNN vividly colorizes images with the help of the fusion layer accounting for local features as well as global features. Two objective functions, namely, Mean Squared Error (MSE) and Peak Signal-to-Noise Ratio (PSNR), are employed for objective quality assessment between the estimated color image and its ground truth. The model is trained on the dataset created by ourselves with 1.2 K historical images comprised of old and ancient photographs of Nepal, each having 256 × 256 resolution. The loss i.e., MSE, PSNR, and accuracy of the model are found to be 6.08%, 34.65 dB, and 75.23%, respectively. Other than presenting the training results, the public acceptance or subjective validation of the generated images is assessed by means of a user study where the model shows 41.71% of naturalness while evaluating colorization results.


1971 ◽  
Vol 51 (3) ◽  
pp. 461-469 ◽  
Author(s):  
K. W. G. VALENTINE ◽  
T. M. LORD ◽  
W. WATT ◽  
A. L. BEDWANY

The accuracy obtainable from four types of aerial photographic film in the mapping and description of soil and terrain features was measured. Black and white film gave a soil mapping accuracy of 72% and was just as good as the color or infrared films for the description of specific terrain features in mountain lands. The accuracy of the soil map in the mountain lands and the description of terrain features in an alluvial valley increased to over 80% with the color film. Infrared film, both color and black and white, gave slightly more accurate soil maps in the valley. The use of a film like Kodak Special Ektachrome MS Aerographic Type SO-151 is recommended for future soil surveys. Black and white prints and color prints and transparencies can all be obtained from the same roll of this film type.


SMPTE Journal ◽  
1978 ◽  
Vol 87 (1) ◽  
pp. 9-15 ◽  
Author(s):  
Akiji Maekawa ◽  
Hiroshi Iino ◽  
Takashi Shigesawa ◽  
Tadakazu Tsutada

2008 ◽  
Vol 17 (3) ◽  
pp. 45-56 ◽  
Author(s):  
Gascia Ouzounian

Abstract This article explores concepts of acoustic space in postwar media studies, architecture, and spatial music composition. A common link between these areas was the characterization of acoustic space as indeterminate, chaotic, and sensual, a category defined in opposition to a definite, ordered, and rationalized visual space. These conceptual polarities were vividly evoked in an iconic sound-and-light installation, the Philips Pavilion at the 1958 Brussels World Fair. Designed by Le Corbusier, the Philips Pavilion also featured a black-and-white film, color projections, hanging sculptures, and Edgard Varèse’s Poème électronique, a spatial composition distributed over hundreds of loudspeakers and multiple sound routes. Typically remembered as a sequence of abstract sound geometries, the author argues that Poème électronique was instead an allegorical work that told a “story of all humankind.” This narrative was expressed through a series of conceptual binaries that juxtaposed such categories as primitive/enlightened, female/male, racialized/white, and sensual/ rational– contrasts that were framed within the larger dialectic between acoustic and visual space.


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