The method for filtering a residual signal to improve performance in the standard coding mode of motion picture

摘要

The present invention relates to a residual signal filtering method for improving the performance of a video standard coding scheme. In particular, the present invention relates to quantization error based on H.264 and to correlations between pixels of adjacent blocks and current pixels. The present invention relates to a method for removing noise from an input image and filtering a bit rate problem by filtering.;Residual signal filtering method for improving the performance of the video standard coding method of the present invention comprises the steps of: a residual signal preprocessing filter to obtain an error signal between the input image and the motion-compensated image or the input image and the intra-predicted image; A second step of removing the high frequency component by low frequency filtering the error signal by the residual signal preprocessing filter; A third step of performing a discrete cosine transform (DCT) on the low frequency filtered error signal; A fourth step of quantizing the DCT error signal; Obtaining noise in the quantized error signal; And a sixth step of obtaining an average energy of the noise.;Video, Encoding, Residual Signal, Filtering