10 avc the basics of which are described in the following in h 264 avc an adaptive deblocking filter is applied in the coding loop this means that further prediction is performed on filtered images the filter is designed to remove as much as possible of the blocking and quantization noise and still maintain as much of the image content as possible it is often a challenge to separate quantization noise and picture content this is why the filter is highly content adaptive and therefore complex concerning computational operations in fig3 an edge between two picture blocks is shown the letters c and d denotes two adjacent pixel positions on each side of the edge and the other letters denotes the 6 horizontal pixel positions closest to the two first mentioned pixels according to h 264 avc pixels b c d e may be modified based on the value of each of the pixels and on the characterization of the edge itself this modification is for equalizing the above mentioned artifacts the modification is therefore carried out only when artifacts are likely to occur similar filter operations are performed on all the lines a b c d e f in the following description the letters will be used without the numbering 0 7 according to h 264 a strength value str is defined for the edge this strength value reflects whether artifacts are likely to occur between two blocks and depends on whether one or more of the following situations are detected a if any of the two blocks on each side of the boundary is intra coded i e coded based on.