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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 ...
Compression of an image to reduce file size (in Kb) is usually "lossy" and is not advised for featured pictures. Image compression will reduce download times and save disk space, but it does so at the expense of fine detail and overall image quality. If in doubt, when saving JPEG files, always select the "maximum" quality setting.
JPEG ( / ˈdʒeɪpɛɡ / JAY-peg, short for Joint Photographic Experts Group) [2] is a commonly used method of lossy compression for digital images, particularly for those images produced by digital photography. The degree of compression can be adjusted, allowing a selectable tradeoff between storage size and image quality.
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JPEG 2000 (JP2) is an image compression standard and coding system. It was developed from 1997 to 2000 by a Joint Photographic Experts Group committee chaired by Touradj Ebrahimi (later the JPEG president), with the intention of superseding their original JPEG standard (created in 1992), which is based on a discrete cosine transform (DCT), with a newly designed, wavelet-based method.
File:I Love U Wicky.jpg. Size of this preview: 800 × 500 pixels. Other resolutions: 320 × 200 pixels | 640 × 400 pixels | 1,024 × 640 pixels | 1,389 × 868 pixels. Original file (1,389 × 868 pixels, file size: 257 KB, MIME type: image/jpeg) This is a file from the Wikimedia Commons. Information from its is shown below.
File history. File usage. No higher resolution available. EBQ_Cost_-_Batch_size_Chart.jpg (235 × 215 pixels, file size: 7 KB, MIME type: image/jpeg) This is a file from the Wikimedia Commons. Information from its is shown below. Commons is a freely licensed media file repository. You can help.
Making an image that was incorrectly saved as JPEG fit for saving as PNG. Suppose you have a map for an island that was inadvertently saved as JPEG. Looks OK, if a bit fuzzy. 1. In your bitmap graphics editor, set your fuzzy selection ("magic wand") tool so that it only will select pixels of exactly the same color. (Here: Threshold = 0) 2.
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