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  2. JPEG XT - Wikipedia

    en.wikipedia.org/wiki/JPEG_XT

    JPEG XT (ISO/IEC 18477) is an image compression standard which specifies backward-compatible extensions of the base JPEG standard (ISO/IEC 10918-1 and ITU Rec. T.81).. JPEG XT extends JPEG with support for higher integer bit depths, high dynamic range imaging and floating-point coding, lossless coding, alpha channel coding, and an extensible file format based on JFIF.

  3. Group 4 compression - Wikipedia

    en.wikipedia.org/wiki/Group_4_compression

    G4 compression would actually increase the file size on this type of image. G4 typically achieves a 20:1 compression ratio. [ citation needed ] For an 8.5"×11" page scanned at 200 DPI , this equates to a reduction from 467.5 kB to 23.4 kB (95% compression ratio).

  4. Image compression - Wikipedia

    en.wikipedia.org/wiki/Image_compression

    Image compression is a type of data compression applied to digital images, to reduce their cost for storage or transmission. Algorithms may take advantage of visual perception and the statistical properties of image data to provide superior results compared with generic data compression methods which are used for other digital data.

  5. 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 artifacts.

  6. JPEG - Wikipedia

    en.wikipedia.org/wiki/JPEG

    Continuously varied JPEG compression (between Q=100 and Q=1) for an abdominal CT scan. JPEG (/ ˈ dʒ eɪ p ɛ ɡ / JAY-peg, short for Joint Photographic Experts Group and sometimes retroactively referred to as JPEG 1) [2] [3] is a commonly used method of lossy compression for digital images, particularly for those images produced by digital photography.

  7. Comparison of graphics file formats - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_graphics...

    JPEG XR / HD Photo: JPEG XR / HD Photo Microsoft.wdp, .hdp, .jxr image/vnd.ms-photo General purpose royalty-free KDC: Kodak DC40/DC50 RAW Kodak: TIFF .kdc K25: Kodak DC25 RAW Kodak: TIFF .k25 Logluv TIFF: Greg Ward TIFF Supported by LibTIFF: MNG: Multiple-image Network Graphics PNG.mng video/x-mng Yes NEF: Nikon RAW Nikon: TIFF .nef MIFF ...

  8. Lossless JPEG - Wikipedia

    en.wikipedia.org/wiki/Lossless_JPEG

    The standard Independent JPEG Group libraries cannot encode or decode it, but Ken Murchison of Oceana Matrix Ltd. wrote a patch that extends the IJG library to handle lossless JPEG. [1] Lossless JPEG has some popularity in medical imaging, and is used in DNG and some digital cameras to compress raw images, but otherwise was never widely adopted.

  9. Minolta Dimage 7 series - Wikipedia

    en.wikipedia.org/wiki/Minolta_Dimage_7_series

    JPEG, TIFF, Motion JPEG (MOV), RAW. DCF 1.0 / DPOF 1.1-compliant Printing output control 7Hi: Exif Print, PRINT Image Matching II 7i: Exif Print, PRINT Image Matching Recording media Type I and Type II CompactFlash cards (max. 2 GB) IBM Microdrive (170 MB, 340 MB, 512 MB, 1 GB) Image quality modes

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