Image processing device and method for performing quality optimized deblocking

Abstract

To provide an image processing device (501) for use in an image encoder and / or an image decoder, for deblocking a block edge between a first block and a second block of an image encoded with a block code.SOLUTION: The image processing device (501) comprises a filter (502) for filtering the block edge, configured to, for at least some of the pixels to be filtered, within a deblocking range from the block edge, the deblocking range being perpendicular to the block edge, determine a filtered pixel value from an original pixel value of the pixel and at least one further pixel value, determine a clipping value of the pixel, dependent upon a distance of the pixel from the block edge, and clip the filtered pixel value using the clipping value resulting in a deblocked pixel value.SELECTED DRAWING: Figure 9

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