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  2. 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 ...

  3. IPTC Information Interchange Model - Wikipedia

    en.wikipedia.org/wiki/IPTC_Information...

    IIM metadata can be embedded into JPEG/Exif, TIFF, JPEG2000 or Portable Network Graphics formatted image files. Other file formats such as GIF or PCX do not support IIM. IIM's file structure technology has largely been overtaken by the Extensible Metadata Platform (XMP), but the IIM attribute definitions are the basis for the IPTC Core schema ...

  4. JPEG - Wikipedia

    en.wikipedia.org/wiki/JPEG

    The JPEG standard specifies the codec, which defines how an image is compressed into a stream of bytes and decompressed back into an image, but not the file format used to contain that stream. [19] The Exif and JFIF standards define the commonly used file formats for interchange of JPEG-compressed images.

  5. Exif - Wikipedia

    en.wikipedia.org/wiki/Exif

    The Exif tag structure is borrowed from TIFF files. On several image specific properties, there is a large overlap between the tags defined in the TIFF, Exif, TIFF/EP, and DCF standards. For descriptive metadata, there is an overlap between Exif, IPTC Information Interchange Model and XMP info, which also can be embedded in a JPEG file.

  6. Joint Photographic Experts Group - Wikipedia

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

    For the JPEG standards that are published jointly with ITU-T, each ISO/IEC Part corresponds to a separate ITU-T Recommendation (i.e., a separate standard). Once published, JPEG standards have also often been revised by later amendments and/or new editions – e.g., to add optional extended capabilities or improve the editorial quality of the ...

  7. National Imagery Transmission Format - Wikipedia

    en.wikipedia.org/wiki/National_Imagery...

    The NITFS allows for Support Data Extensions (SDEs), which are a collection of data fields that provide space within the NITFS file structure for adding functionality. Documented and controlled separately from the NITFS suite of standards, SDEs extend NITF functionality with minimal impact on the underlying standard document.

  8. JPEG XL - Wikipedia

    en.wikipedia.org/wiki/JPEG_XL

    JPEG XL Image Coding System — Part 1: Core coding system [5] Part 2: 13 October 2021: 18181-2:2024: JPEG XL Image Coding System — Part 2: File format [15] Part 3: 3 October 2022: 18181-3:2022: JPEG XL Image Coding System — Part 3: Conformance testing Part 4: 5 August 2022: 18181-4:2022: JPEG XL Image Coding System — Part 4: Reference ...

  9. List of file signatures - Wikipedia

    en.wikipedia.org/wiki/List_of_file_signatures

    Online File Signature Database for Forensic Practitioners, a private compilation free to Law Enforcement; Man page for compress, uncompress, and zcat on SCO Open Server; Public Database of File Signatures [dead link ‍] Complete list of magic numbers with sample files; the original libmagic data files with thousands of entries as used by file ...

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