Patent ID: 11949867
Assignee: CANON KABUSHIKI KAISHA
Field: nan (nan)
Classification: CPC nan | IPC H

Claim 12:
13. An image encoding method for encoding an image, the method comprising;
dividing the image into a plurality of blocks;
performing quantizing processing on an object block using a quantization matrix; and
encoding data for indicating a plurality of values corresponding to at least a part of elements in the quantization matrix,
wherein, in a case where a width of the object block is 16 samples and a height of the object block is 8 samples, the data includes:
data indicating difference between a predetermined initial value and a first value which is set as a first element corresponding to DC component in the quantization matrix and is not set for a plurality of elements in the quantization matrix used for the quantizing processing;
data indicating difference between the first value and a second value which is set as a second element adjacent to the first element on a right side of the first element and is not set for a plurality of elements in the quantization matrix used for the quantizing processing; and
data indicating difference between the second value and a third value which is set as a third element and a fourth element, wherein the third element is below the first element and the fourth element is below the second element, and wherein the third element is adjacent to the first element and the fourth element is adjacent to the second element.