Image processing device and method

An image encoding device comprising:

• an adaptive filter configured to perform an adaptive filtering process on an image block to be encoded;
• generating circuitry configured to generate filter block data for the image block for controlling whether or not to perform the adaptive filtering process on the image block, and to generate boundary control data for controlling whether or not a first pixel in a first slice of an image is required to perform the adaptive filtering process on a second pixel included in the image block in a second slice of the image;
• and
• encoder circuitry configured to encode the image block after the adaptive filter performs the adaptive filtering process when the filter block data indicates that the adaptive filtering process is to be performed,
• wherein the adaptive filter is configured to perform the adaptive filtering process on all pixels in the image block when the filter block data indicates that the adaptive filtering process is to be performed and the boundary control data indicates that the first pixel in the first slice of the image is required to perform the adaptive filtering process on the second pixel included in the image block in the second slice of the image.