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  2. Media type - Wikipedia

    en.wikipedia.org/wiki/Media_type

    In information and communications technology, a media type, [1] [2] content type [2] [3] or MIME type [1] [4] [5] is a two-part identifier for file formats and format contents. Their purpose is comparable to filename extensions and uniform type identifiers, in that they identify the intended data format.

  3. History of PDF - Wikipedia

    en.wikipedia.org/wiki/History_of_PDF

    From 1993 to 2006 Adobe Systems changed the PDF specification several times to add new features. Various aspects of Adobe's Extension Levels published after 2006 were accepted into working drafts of ISO 32000-2 (PDF 2.0), but developers are cautioned that Adobe's Extensions are not part of the PDF standard.

  4. Satellite imagery - Wikipedia

    en.wikipedia.org/wiki/Satellite_imagery

    The first images from space were taken on the sub-orbital V-2 rocket flight launched by the US on October 24, 1946. Satellite image of Fortaleza.. Satellite images (also Earth observation imagery, spaceborne photography, or simply satellite photo) are images of Earth collected by imaging satellites operated by governments and businesses around the world.

  5. List of file signatures - Wikipedia

    en.wikipedia.org/wiki/List_of_file_signatures

    This is a list of file signatures, data used to identify or verify the content of a file.Such signatures are also known as magic numbers or Magic Bytes.; Many file formats are not intended to be read as text.

  6. List of ISO 3166 country codes - Wikipedia

    en.wikipedia.org/wiki/List_of_ISO_3166_country_codes

    ISO 3166-1 alpha-2 – two-letter country codes which are also used to create the ISO 3166-2 country subdivision codes and the Internet country code top-level domains. ISO 3166-1 alpha-3 – three-letter country codes which may allow a better visual association between the codes and the country names than the 3166-1 alpha-2 codes.

  7. Color depth - Wikipedia

    en.wikipedia.org/wiki/Color_depth

    The definition of both color precision and gamut is accomplished with a color encoding specification which assigns a digital code value to a location in a color space. The number of bits of resolved intensity in a color channel is also known as radiometric resolution , especially in the context of satellite images .

  8. List of Unified Modeling Language tools - Wikipedia

    en.wikipedia.org/wiki/List_of_Unified_Modeling...

    Download QR code; Wikidata item; ... Python, C, C++ Prosa UML Modeller: ... Outputs images in PNG or SVG format. PowerDesigner: Yes Yes Yes

  9. Anaglyph 3D - Wikipedia

    en.wikipedia.org/wiki/Anaglyph_3D

    Where traditionally, this has been a largely black & white format, recent digital camera and processing advances have brought very acceptable color images to the internet and DVD field. With the online availability of low cost paper glasses with improved red-cyan filters, and plastic framed glasses of increasing quality, the field of 3D imaging ...