Image processing device and image processing method

摘要

Provided is an image processing device including a selection section configured to select, from a plurality of transform units with different sizes, a transform unit used for inverse orthogonal transformation of image data to be decoded, a generation section configured to generate, from a first quantization matrix corresponding to a transform unit for a first size, a second quantization matrix corresponding to a transform unit for a second size from a first quantization matrix corresponding to a transform unit for a first size, and an inverse quantization section configured to inversely quantize transform coefficient data for the image data using the second quantization matrix generated by the generation section when the selection section selects the transform unit for the second size.

主权项

1. An image processing device comprising:
circuitry configured to:
generate, from an 8×8 quantization matrix, a 32×32 quantization matrix corresponding to a 32×32 transform unit; andinversely quantize quantized transform coefficient data for image data using the 32×32 quantization matrix generated by the generation section when the 32×32 transform unit is used for inverse orthogonal transformation, wherein the circuitry is configured to generate the 32×32 quantization matrix by duplicating one of a first element and a second element adjacent to each other in the 8×8 quantization matrix as an element between the first element and the second element in the 32×32 quantization matrix.