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Jpeg is an international standard for digital signal compression, whose compression object is still images; jpeg is a compression standard for continuous-tone still images; and jpeg format is the most commonly used image file format with the suffix ".jpg" or ".jpeg".

Jpeg is an international standard for digital signal compression, and its compression object is still images.

JPEG (Joint Photographic Experts Group) is the product of the JPEG standard, which is formulated by the International Organization for Standardization (ISO) and is a compression standard for continuous-tone still images. The JPEG format is the most commonly used image file format, with the suffix .jpg or .jpeg.

JPEG format can be divided into three formats: standard JPEG, progressive JPEG and JPEG2000.

1. Standard JPEG format; this type can only display images in order from top to bottom when downloading a web page, and the full picture can not be seen until all the image materials have been downloaded.

two。 Progressive JPEG; this type of download in the web page, first presents the rough appearance of the image, and then slowly presents the complete content, and saved into a progressive JPG format of the document is smaller than the standard JPG format, so if you want to use images on the web page, you can use this format.

3. JPEG2000; is a new generation of image compression method, which has higher compression quality, and can improve the mosaic phenomenon and position disorder caused by signal instability in wireless transmission, and improve the quality of transmission.

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