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  2. Image scanner - Wikipedia

    en.wikipedia.org/wiki/Image_scanner

    Alexander Murray and Richard Morse invented and patented the first analog color scanner at Eastman Kodak in 1937. Intended for color separation at printing presses, their machine was an analog drum scanner that imaged a color transparency mounted in the drum, with a light source placed underneath the film, and three photocells with red, green, and blue color filters reading each spot on the ...

  3. JPEG File Interchange Format - Wikipedia

    en.wikipedia.org/wiki/JPEG_File_Interchange_Format

    The JPEG standard used for the compression coding in JFIF files does not define which color encoding is to be used for images. JFIF defines the color model to be used: either Y for greyscale, or YCbCr derived from RGB color primaries as defined in CCIR 601 (now known as Rec. ITU-R BT.601), except with a different "full range" scaling of the Y ...

  4. Image conversion - Wikipedia

    en.wikipedia.org/wiki/Image_conversion

    Like any resampling operation, changing image size and bit depth are lossy in all cases of downsampling, such as 30-bit to 24-bit or 24-bit to 8-bit palette-based images.. While increasing bit depth is usually lossless, increasing image size can introduce aliasing or other undesired artifa

  5. JPEG - Wikipedia

    en.wikipedia.org/wiki/JPEG

    This is an accepted version of this page This is the latest accepted revision, reviewed on 11 December 2024. Lossy compression method for reducing the size of digital images For other uses, see JPEG (disambiguation). "JPG" and "Jpg" redirect here. For other uses, see JPG (disambiguation). JPEG A photo of a European wildcat with the compression rate, and associated losses, decreasing from left ...

  6. List of file signatures - Wikipedia

    en.wikipedia.org/wiki/List_of_file_signatures

    Image encoded in the JPEG XL format [89] FF 0A: ÿ␊ 00 01 00 00 00 ␀␁␀␀␀ 0 ttf tte dfont TrueType font 4F 54 54 4F: OTTO: 0 otf OpenType font [90] 23 25 4D 6F 64 75 6C 65 #%Module: 0 Modulefile for Environment Modules [91] 4D 53 57 49 4D 00 00 00 D0 00 00 00 00: MSWIM␀␀␀Ð␀␀␀␀ 0 wim swm esd Windows Imaging Format file ...

  7. Joint Photographic Experts Group - Wikipedia

    en.wikipedia.org/wiki/Joint_Photographic_Experts...

    The JPEG committee was created in 1986 [11] [12] and the Joint (CCITT/ISO) Bi-level Image Group (JBIG) was created in 1988. [11] Former chairs of JPEG include Greg Wallace of Digital Equipment Corporation and Daniel Lee of Yahoo. Fumitaka Ono of Tokyo Polytechnic University was chair of the former JBIG group that has since been merged into JPEG.

  8. JPEG XR - Wikipedia

    en.wikipedia.org/wiki/JPEG_XR

    In July 2007, the Joint Photographic Experts Group and Microsoft announced HD Photo to be under consideration to become a JPEG standard known as JPEG XR. [ 11 ] [ 12 ] On 16 March 2009, JPEG XR was given final approval as ITU-T Recommendation T.832 and starting in April 2009, it became available from the ITU-T in "pre-published" form. [ 1 ]

  9. Russell Kirsch - Wikipedia

    en.wikipedia.org/wiki/Russell_Kirsch

    Russell A. Kirsch (June 20, 1929 – August 11, 2020) was an American engineer at the National Bureau of Standards (now known as the National Institute of Standards and Technology).