| 摘要 |
<p>The present invention relates to a method of processing a digital input signal that comprises at least the steps of low pass filtering (FIL) the input signal (IS), which results in a filtered signal (FS) comprising filtered samples; determining (DET) a correction area (CA) around block boundaries; correcting (COR) by adding a random binary number (RN) comprising at least one bit to the filtered samples belonging to the correction area, which results in an output signal (OS). Such a method of processing is particularly efficient in uniform areas of medium contrast and low temporal activity where a block edge difference of luminance or chrominance of 1 is visible to the human eye. Use: television receivers.</p> |
