macroblock

(redirected from Macroblocks)

macroblock

A square group of pixels, typically 8x8 or 16x16, that is treated as an entity for compression and decompression. See chroma subsampling and blocking artifacts.
References in periodicals archive ?
The data in the cache is organized into large blocks, or macroblocks, so that the processor knows where to find whatever data it needs.
264 often showed macroblocks, PERSEUS simply lost detail, which is much less distracting.
The individual image is divided into macroblocks of desired dimensions (i.
In [4], an early SKIP-mode decision scheme and a selective prediction-mode decision scheme have been developed based on the relationship between coding modes of collocated macroblocks on texture and depth frames.
They correspond to the Western and Eastern macroblocks of the Morphostructural map (Cotilla et al.
In the first stage, to estimate the sizes of the residual signal and the header information, the RDO process is performed for all macroblocks (MBs) of the target frame using QP1, which is an initial QP.
The Northwest macroblock (Galicia, identified as VIII) is in its continental part in direct interaction with two large adjacent macroblocks (of approximately rectangular shape, VII: Arqueado and IX: Septentrional) through two morpholineaments of 2nd order (A7: SantaTecla and A8: Ponferrada).
The top layer is the picture layer followed by a Group of Block (GOB) layer comprising a number of consecutive macroblocks, then the Macroblock layer, and finally a block layer.
Macroblocks are formed by the 8 x 8 pixel blocks used for the DCT.
The choice of 16 X 16 blocks for the motion-compensation unit is the result of such a trade-off, such motion-compensation units are called Macroblocks.
Corrupted timing packets are detected and repaired at the transport stream layer, while corrupted video slices and macroblocks are detected and repaired at the MPEG layer.
Shih et al [5] classified macroblocks into slice groups using the explicit mode of FMO to exploit the error resilient features of H.