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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 ...
In the case of JPEG, even a composite with parts subjected to matching compressions will have a difference in the compression artifacts. [ 1 ] In order to make the typically faint compression artifacts more readily visible, the data to be analyzed is subjected to an additional round of lossy compression, this time at a known, uniform level, and ...
JFIF excludes certain options allowed in the formal JPEG standard (such as lossless JPEG, CMYK JPEG, etc.), but also packages JPEG data into a concrete file format (something which was not done in the formal JPEG standard itself), and makes provision for the inclusion of certain types of metadata (including a thumbnail)...
The original variant is maintained and published by the Independent JPEG Group (IJG). Meanwhile, there are several forks with additional features. JPEG JFIF images are widely used on the Web. The amount of compression can be adjusted to achieve the desired trade-off between file size and visual quality. [4]
JPEG/Exif is the most common image format used by digital cameras and other photographic image capture devices; along with JPEG/JFIF, it is the most common format for storing and transmitting photographic images on the World Wide Web. [9] These format variations are often not distinguished and are simply called JPEG.
An entry-level version of the program is available free of charge for home, non-commercial use. This free version supports the JPEG and Microsoft HD Photo / JPEG-XR image formats and can read/write Adobe XMP rating metadata in external sidecar files (*.xmp) or embed it within JPEG (JFIF), HD Photo and TIFF containers.
In AOL Mail, click Compose.; Click the Attach icon. - Your computer's file manager will open. Find and select the file or image you'd like to attach. Click Open.; The file or image will be attached below the body of the email.
Format Compression algorithm Raster/ vector Maximum Color depth. Indexed color Trans-parency. Meta-data. Inter-lacing. Multi-page Anima-tion Layers Color manage-ment
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