US 2015/0030068 A1 · IMAGE PROCESSING DEVICE AND METHOD

Abstract

The present disclosure relates to an image processing device and method that enable efficient decoding of a picture partitioned into tiles. Upon being supplied with a tile initial QP from a tile initial QP buffer, a differential QP generation unit acquires a picture initial QP by sending a request to a picture initial QP buffer. The differential QP generation unit generates a differential QP between the picture initial QP and the tile initial QP, and supplies the generated differential QP to a syntax setting unit 161. The syntax setting unit sets the differential QP between the picture initial QP and the tile initial QP, near the beginning of the corresponding tile in an encoded stream, as the initial value of the quantization parameter for the tile (TILE_int_QP). The present disclosure is applicable to, for example, an image processing device.

Claims16

Dependent claims

An image processing device comprising:

a receiving unit configured to receive an encoded stream and an initial value of a quantization parameter for a tile in a picture included in an image and partitioned into a plurality of tiles, the initial value of the quantization parameter for the tile being set so as to ensure that processes related to quantization parameters for tiles in the picture are independent;
a quantization parameter reconfiguration unit configured to reconfigure a quantization parameter of a coding unit in the tile, using the initial value of the quantization parameter for the tile received by the receiving unit;
and
a decoding unit configured to decode the encoded stream received by the receiving unit using the quantization parameter reconfigured by the quantization parameter reconfiguration unit to generate the image.

1 more element

Dependencies are inferred from the claim text.

Image processing device and method

Life of this patent

Image processing device and method

Life of this patent

Abstract

Claims16