METHOD, APPARATUS AND SYSTEM FOR ENCODING AND DECODING A BLOCK OF VIDEO SAMPLES

Abstract: a system and method of decoding a sub-block of residual coefficients of a transform block from a video bitstream. the method comprises determining whether sign bit hiding is used for the sub-block, the determination based on a value of a transform skip flag determined for the sub-block and a value of a sign bit hiding flag associated with the sub-block; if sign bit hiding is not used, decoding a number of sign bits equal to a number of significant coefficients in the subblock; and decoding the sub-block by reconstructing the residual coefficients of the sub-block using the decoded sign bits.

Inventor(s): Jonathan GAN

CPC Classification: H04N19/467 (characterised by the embedded information being invisible, e.g. watermarking)

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