US 9,813,714 B2
Image processing device and method
Junichi Tanaka, Tokyo (JP); and Yoshitaka Morigami, Tokyo (JP)
Assigned to SONY CORPORATION, Tokyo (JP)
Filed on Jan. 27, 2017, as Appl. No. 15/418,228.
Application 15/418,228 is a continuation of application No. 14/375,304, previously published as PCT/JP2013/055543, filed on Feb. 28, 2013.
Claims priority of application No. 2012-044009 (JP), filed on Feb. 29, 2012.
Prior Publication US 2017/0142413 A1, May 18, 2017
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/126 (2014.01); H04N 19/122 (2014.01); H04N 19/18 (2014.01); H04N 19/463 (2014.01); H04N 19/61 (2014.01); H04N 19/70 (2014.01)
CPC H04N 19/126 (2014.11) [H04N 19/122 (2014.11); H04N 19/18 (2014.11); H04N 19/463 (2014.11); H04N 19/61 (2014.11); H04N 19/70 (2014.11)] 19 Claims
OG exemplary drawing
1. An image processing device comprising:
circuitry configured to
set, in a case a current quantization matrix is copied, as syntax whose semantics is set so that default quantization matrix is referred to as a condition that a value is 0, a difference value between a value of identification information identifying a reference quantization matrix and a value of identification information identifying the current quantization matrix;
set, in a case the current quantization matrix is not copied, a replacement difference coefficient, which is a difference between a replacement coefficient used to replace a (0, 0) coefficient of a 32×32 quantization matrix and a (0, 0) coefficient of an 8×8 quantization matrix, the 32×32 quantization matrix being obtained by using a nearest neighboring process against the 8×8 quantization matrix for up-converting;
quantize transform coefficient data obtained by orthogonal transforming an image, and generate quantized data; and
encode the generated quantized data and the replacement difference coefficient to generate encoded data, the encoded data including the replacement difference coefficient and the difference value.