Image processing device and method

An image processing method comprising:

• generating an image by decoding an encoded stream;
• performing an adaptive offset process on the generated image;
• adjusting strength of a deblocking filtering process when a current region in the deblocking filtering process in the image is determined to be a boundary of the current region in the adaptive offset process based on information about a quad-tree structure used in the adaptive offset process;
• and
• performing the deblocking filtering process on the image subjected to the adaptive offset process, the deblocking filtering process having the adjusted strength,
• an image processing device generating the image, performing the adaptive offset process, adjusting the strength of the deblocking filtering process, and performing the deblocking filtering process.

An image processing device comprising:

• an adaptive offset processing unit configured to perform an adaptive offset process on an image that is locally decoded at a time of image encoding;
• a deblocking filter adjustment unit configured to adjust strength of a deblocking filtering process when a current region in the deblocking filtering process in the image is determined to be a boundary of the current region in the adaptive offset process based on information about a quad-tree structure used in the adaptive offset process;
• a deblocking filtering unit configured to perform the deblocking filtering process on the image subjected to the adaptive offset process by the adaptive offset processing unit, the deblocking filtering process having the strength adjusted by the deblocking filter adjustment unit;
• and
• an encoding unit configured to encode the image by using the image subjected to the deblocking filtering process by the deblocking filtering unit.

An image processing method comprising:

• performing an adaptive offset process on an image that is locally decoded at a time of image encoding;
• adjusting strength of a deblocking filtering process when a current region in the deblocking filtering process in the image is determined to be a boundary of the current region in the adaptive offset process based on information about a quad-tree structure used in the adaptive offset process;
• performing the deblocking filtering process on the image subjected to the adaptive offset process, the deblocking filtering process having the adjusted strength;
• and
• encoding the image by using the image subjected to the deblocking filtering process,
• an image processing device performing the adaptive offset process, adjusting the strength of the deblocking filtering process, performing the deblocking filtering process, and encoding the image.