Reduction of block effects in spatially re-sampled image information for block-based image coding

A method of processing block-based image information, the block-base image information comprising a plurality of image blocks in which each image block comprises a plurality of sub-blocks and in which each sub-block comprises a plurality of pixels, said method comprising:

• up sample filtering pixels located along boundaries of the plurality of image blocks and the plurality of sub-blocks using a first filter strength;
• and
• up sample filtering pixels other than those located along boundaries of the image blocks and the sub-blocks using a second filter strength.

An up sample filter system for processing block-based image information, the block-based image information comprising a plurality of image blocks in which each image block comprises a plurality of pixels, comprising:

• a first up sample filter which filters pixels located along boundaries of the plurality of image blocks using a first filter strength;
• and
• a second up sample filter which filters at least a portion of the pixels that are not located along boundaries of the plurality of image blocks using a second filter strength.