A strong contrast between several near located pixels provokes the appearance of visible artifacts. It is not recommended to use this format for compression of drawings and various kinds of graphics. The JPG algorithm is optimally suitable for compressing photographs and pictures in which realistic scenes with little contrast of colors are present. It is also frequently used in memory cards of digital video cameras. Because of the small size, it is requested by the owners of websites, allowing you to save the traffic effectively. It uses the technology of encoding smooth color renditions, providing the ability to frequently reduce the amount of data during the image's recording. Compression rates of 10:1 or 20:1 yield little degradation in image quality.JPG – is a popular graphic format characterized by a high image compression rate, which leads to a decrease in image quality. Compression rates of 100:1 can be achieved, although the loss is noticeable at that level. JPEG involves a lossy compression mechanism using discrete cosine transform (DCT). JPEG is a joint standard of the International Telecommunications Union (ITU-T T.81) and the International Organization for Standardization (ISO 10918-1). JPG is a graphical file format for editing still images, it offers a symmetrical compression technique which is processor intensive and time consiming in both compression and decompression. The JPG file is a great format as it often manages to compress files to 1/10 of the size of the original file which is especially good for saving on bandwidth. The JPG format is often used in digital camera memory cards. The resultant 'lossy' file means that quality can never be recovered. JPG's are often used for web sites and email as they are generally smaller file sizes as they are lossy meaning that some image quality is lost when the JPG is compressed and saved. Microsoft XML Paper Specification Essentials Pack.These contents can be reviewed by opening in an application that supports ZIP files. The files includes are an XML markup file, text, embedded fonts, raster images, 2D vector graphics and any DRM (Digital Rights Management) information. Microsoft developed XPS with the intention of creating an alternative to PDF.Īn XPS file is a unicode ZIP archive which use the Open Packging Conventions and contain the files which make up the document.

The markup language is a subset of XAML which allows it to incorporate vector-graphics in documents. Open XML Paper Specification known as XPS consists of structured XML markup that determnes the layout and visual appearance of each page within the document.

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