METHOD OF ADAPTIVE FILTERING FOR MULTIPLE REFERENCE LINE OF INTRA PREDICTION IN VIDEO CODING, VIDEO ENCODING APPARATUS AND VIDEO DECODING APPARATUS THEREWITH
FIG6 is a flowchart illustrating a method of adaptive filtering for an MRL of intra prediction in video coding according to the disclosure
Referring to FIG6, which is a flowchart illustrating a method of adaptive filtering for an MRL of intra prediction in video coding according to the disclosure, HEVC provides a mode-dependent reference sample smoothing method, and the JEM further provides a method for improving the smoothness of a reference sample, which is called an RSAF. Two low pass filters (LPFs) are used during smoothing of reference samples. One implementation example of the disclosure provides an Adaptive Reference Filtering Scheme (ARFS). As shown in FIG6, with reference to a plurality of reference filters such as a filter 1 622, a filter 2 624 and a filter T 626 included in a reference smoothing module 620, the filter may be selected corresponding to a filter index 604, the filtering operation is skipped or bypass, filtering is not performed, or an input sample is directly output as a filtered sample.
flowchart
620
reference smoothing module
626
filter T
606
input samples
2
P
6
Mode
604
filter index
602
RT index
608
filtered samples
610
filter selection process
['1. A method of adaptive filtering for intra prediction, comprising: receiving an index, and performing filter selection according to the index to generate a filter index corresponding to the index; and selecting a filter corresponding to the filter index, filtering an input sample by using the filter to generate a filtered sample and outputting the filtered sample, or directly outputting the input sample as the filtered sample.']