This is sometimes required in cases where a color image would render in a confusing manner given the colors and patterns present in the source image and the selection filters used (typically red and its complement, cyan). The selection of weighting thus allows a wide range of artistic expression in the final monochromatic image.įor production of an anaglyph image the original color stereogram source may first be reduced to monochrome in order to simplify the rendering of the image. If the red channel is eliminated and the green and blue combined then the effect will be similar to that of orthochromatic film or the use of a cyan filter on panchromatic film. The weighting of individual channels may be selected to achieve a desired artistic effect if only the red channel is selected by the weighting then the effect will be similar to that of using a red filter on panchromatic film. In digital photography, monochrome is the capture of only shades of black by the sensor, or by post-processing a color image to present only the perceived brightness by combining the values of multiple channels (usually red, blue, and green). Although color photography was possible even in the late 19th century, easily used color films, such as Kodachrome, were not available until the mid-1930s. Originally, all photography was done in monochrome. In film photography, monochrome is typically the use of black-and-white film. it may mean having only one color which is either on or off (also known as a binary image),Ī monochrome computer display is able to display only a single color, often green, amber, red or white, and often also shades of that color.In computing, monochrome has two meanings: It may also refer to sepia displaying tones from light tan to dark brown or cyanotype ("blueprint") images, and early photographic methods such as daguerreotypes, ambrotypes, and tintypes, each of which may be used to produce a monochromatic image. Of an image, the term monochrome is usually taken to mean the same as black and white or, more likely, grayscale, but may also be used to refer to other combinations containing only tones of a single color, such as green-and-white or green-and-red. In physics, monochromatic light refers to electromagnetic radiation that contains a narrow band of wavelengths, which is a distinct concept. Images using only shades of grey are called grayscale (typically digital) or black-and-white (typically analog). (32MB) ( Note that this file does not include term definitions or scope notes.A Philips branded digital audio player with a monochrome display with green backlit, common on older such devices including mobile phones and handheld game systemsĪ monochrome or monochromatic image, object or palette is composed of one color (or values of one color). The full NASA Thesaurus data files can be downloaded by clicking on a link below. The Data File is available in the following formats: RDF/SKOS, RDF/OWL, ZThes-1.0, and CSV/TXT. The NASA Thesaurus Data File contains all valid terms and hierarchical relationships, USE references, and related terms in machine-readable form. (1.4MB): Provides additional access points to terms (4.5MB): Contains an alphabetical listing of subject terms with their fully-expanded hierarchical structure, term definitions, USE cross references, and related terms Volume 1, Hierarchical Listing with Definitions Washington, DC: National Aeronautics and Space Administration, 2012.Ĭhoose the file format you would like to use: Access the NASA Thesaurus PDF VersionĪccess the PDF version (updated January 2012) using the links below: Washington, DC: National Aeronautics and Space Administration, 2012. You may copy and paste any one of the standard citations below (be sure to change ‘SKOS’ to the file format you used): APA Please cite the NASA STI Program in your work if you incorporate/use the NASA Thesaurus. If you have any questions or would like to discuss your usage of the thesaurus with the STI Program Office, The NASA Thesaurus contains over 18,400 subject terms, 4,300 definitions, and more than 4,500 USE cross references. The scope of this controlled vocabulary includes not only aerospace engineering, but all supporting areas of engineering and physics, the natural space sciences (astronomy, astrophysics, and planetary science), Earth sciences, and the biological sciences. The NASA Thesaurus contains the authorized NASA subject terms used to index and retrieve materials in the
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