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Research has shown that scores below twelve indicate color vision deficiency, and twelve or more correct indicate normal color vision, with 97% sensitivity and 100% specificity. The sensitivity of the Ishihara test varies by the number of plates allowed to pass, which can vary by institutional policy.
An Ishihara test image as seen by subjects with normal color vision and by those with a variety of color deficiencies. A pseudoisochromatic plate (from Greek pseudo, meaning "false", iso, meaning "same" and chromo, meaning "color"), often abbreviated as PIP, is a style of standard exemplified by the Ishihara test, generally used for screening of color vision defects.
An example Ishihara test that may be used to detect red–green color blindness. Those with normal color vision should be able to see a green "74" on an orange background. Those with red–green color blindness may see the number "21" or no number at all, with the green and red hues appearing much more similar, if not indistinguishable. Specialty
Color balancing an image affects not only the neutrals, but other colors as well. An image that is not color balanced is said to have a color cast, as everything in the image appears to have been shifted towards one color. [9] [page needed] Color balancing may be thought in terms of removing this color cast.
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www.ine.gov.mz The National Institute of Statistics ( Portuguese : Instituto Nacional de Estatística , INE ) is an agency belonging to the Government of Mozambique and the principal agency for the collection of statistics in the country.
The Mozambique National Institute of Meteorology (Portuguese: Instituto Nacional de Meteorologia de Moçambique) is the national meteorological organization of Mozambique. ...
In astronomy, the color index is a simple numerical expression that determines the color of an object, which in the case of a star gives its temperature. The lower the color index, the more blue (or hotter) the object is. Conversely, the larger the color index, the more red (or cooler) the object is.