MIL-HDBK-1300A
bk Compression rate - The bit representation of the compressed image in bits per pixel.
bl. Compression ratio - The ratio of the original number of bits of data in a block of data to the final number of bits after a process that reduces the number of bits required to convey the required information.
bm. Computer Graphics Metafile - Computer Graphics Metafile (CGM) is a set of basic elements for a computer graphics data interface usable by many graphics-producing systems and applications.
bn. Compression Rate Code (COMRAT) - The compression rate code field in the NITF
image subheader used to indicate the quantization matrices used.
bo. Conditional - In the context of NITF, a data field whose existence depends on the value used in a previous field.
sample.
bp. Continuous-tone image - An image whose components have more than one bit per
bq. Criticality - Those portions of a message which must be received correctly for the message for be useful are considered critical. Criticality provides a means for identifying those portions of a message.
br. Cyclic Redundancy Check (CRC) - A type of error-detecting scheme that uses parity bits generated by polynomial encoding and decoding algorithms to detect transit-generated errors. Note: Error correcting, when required, is usually accomplished through the use of an Automatic Repeat-Request (ARQ) system.
bs. Data - Representation of facts, concepts, or instructions in a formalized manner suitable for communication, interpretation, or processing by humans or by automatic means. Any representations such as characters or analog quantities to which meaning is or might be assigned.
bt. Datagram - In packet-switching, a self-contained packet, independent of other packets, that carries information sufficient for routing from the originating data terminal equipment to the destination data terminal equipment, without relying on earlier exchanges between the equipment and the network. Note: Unlike virtual call service, there are no call establishment or clearing procedures, and the network does not generally provide protection against loss, duplication, or misdelivery.
bu. Data Circuit-terminating Equipment (DCE) - In a data station, the equipment that provides a signal conversion, coding, and other functions at the network end of the line between the data terminal equipment and the line, and that may be a separate or an integral part of the data terminal equipment or of the intermediate equipment.
bv. Data communication - The transfer of information between functional units by means of data transmission according to a protocol.
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