BEF (image format)

BEF is an HDR (High Dynamic Range) image format developed by Unified Color. The BEF format can archive image data with any dynamic range, full human color range, and a quality setting directly tied to color data precision; the used techniques ties it with JND — just noticeable difference parameter.

References

Image file formats

Image file formats are standardized means of organizing and storing digital images. Image files are composed of digital data in one of these formats that can be rasterized for use on a computer display or printer. An image file format may store data in uncompressed, compressed, or vector formats. Once rasterized, an image becomes a grid of pixels, each of which has a number of bits to designate its color equal to the color depth of the device displaying it.

Image file sizes

The size of raster image files is positively correlated with the resolution and images size (number of pixels) and the color depth (bits per pixel). Images can be compressed in various ways, however. A compression algorithm stores either an exact representation or an approximation of the original image in a smaller number of bytes that can be expanded back to its uncompressed form with a corresponding decompression algorithm. Images with the same number of pixels and color depth can have very different compressed file size. Considering exactly the same compression, number of pixels, and color depth for two images, different graphical complexity of the original images may also result in very different file sizes after compression due to the nature of compression algorithms. With some compression formats, images that are less complex may result in smaller compressed file sizes. This characteristic sometimes results in a smaller file size for some lossless formats than lossy formats. For example, graphically simple images (i.e. images with large continuous regions like line art or animation sequences) may be losslessly compressed into a GIF or PNG format and result in a smaller file size than a lossy JPEG format.

Image (category theory)

Given a category C and a morphism in C, the image of f is a monomorphism satisfying the following universal property:

There exists a morphism such that .

For any object Z with a morphism and a monomorphism such that , there exists a unique morphism such that .

Remarks:

The image of f is often denoted by im f or Im(f).

One can show that a morphism f is epic if and only if f = im f.

Examples

In the category of sets the image of a morphism is the inclusion from the ordinary image to . In many concrete categories such as groups, abelian groups and (left- or right) modules, the image of a morphism is the image of the correspondent morphism in the category of sets.

In any normal category with a zero object and kernels and cokernels for every morphism, the image of a morphism can be expressed as follows:

Virtual appliance

A virtual appliance is a pre-configured virtual machine image, ready to run on a hypervisor; virtual appliances are a subset of the broader class of software appliances. Installation of a software appliance on a virtual machine and packaging that into an image creates a virtual appliance. Like software appliances, virtual appliances are intended to eliminate the installation, configuration and maintenance costs associated with running complex stacks of software.

A virtual appliance is not a complete virtual machine platform, but rather a software image containing a software stack designed to run on a virtual machine platform which may be a Type 1 or Type 2 hypervisor. Like a physical computer, a hypervisor is merely a platform for running an operating system environment and does not provide application software itself.

Many virtual appliances provide a Web page user interface to permit their configuration. A virtual appliance is usually built to host a single application; it therefore represents a new way to deploy applications on a network. Virtual machining is also a Virtual appliance in order to produce actual parts in virtual environments.

Image (board game)

Image is a board game developed by 3M released in 1971. The object of the game is to put together cards that represent an image, a description of a famous person.

External links

British Electric Foundation

B.E.F. (British Electric Foundation) were a band/production company formed by former Human League members Martyn Ware and Ian Craig Marsh who later became Heaven 17 (with lead singer Glenn Gregory).

History

Ware and Marsh's first release as B.E.F. in 1980, a collection of instrumentals entitled Music For Stowaways, was initially available only on cassette and was inspired by the appearance of the first Sony Walkman (at first marketed in the UK as the Sony Stowaway). There was also a vinyl release, Music For Listening To, mainly targeted for export sales, which was slightly truncated (though with the addition of a track not found on the cassette). In the late 1990s, a CD release with this title contained the complete contents from both versions.

In 1982, with Heaven 17 already established with Glenn Gregory as the lead vocalist, B.E.F. released an album entitled Music of Quality and Distinction Volume One on Virgin Records, which involved other artists covering classic songs. The production was mainly in the Heaven 17/ B.E.F. style (i.e. synthesisers and LinnDrums). Tina Turner's version of The Temptations's "Ball of Confusion" drew the attention of Capitol Records and her next single "Let's Stay Together", co-produced by Ware, peaked at number six in the UK chart and made the US Top 20. B.E.F.'s album also featured covers by Billy Mackenzie - "The Secret Life of Arabia" and "It's Over," Paul Jones - "There's A Ghost In My House," Paula Yates - "These Boots Are Made For Walkin'," Gary Glitter - "Suspicious Minds," Bernie Nolan - "You Keep Me Hangin' On," Glenn Gregory - "Wichita Lineman" and "Perfect Day" and Sandie Shaw - "Anyone Who Had a Heart."

Format

Format may refer to:

Computing: