US 12,452,417 B2
Systems and methods for performing intra prediction coding in video coding
Frank Bossen, Vancouver, WA (US)
Assigned to SHARP KABUSHIKI KAISHA, Sakai (JP)
Filed by Sharp Kabushiki Kaisha, Osaka (JP)
Filed on Apr. 18, 2024, as Appl. No. 18/638,763.
Application 18/638,763 is a continuation of application No. 17/621,583, granted, now 12,010,301, previously published as PCT/JP2020/024852, filed on Jun. 24, 2020.
Claims priority of provisional application 62/868,276, filed on Jun. 28, 2019.
Claims priority of provisional application 62/865,661, filed on Jun. 24, 2019.
Prior Publication US 2024/0275964 A1, Aug. 15, 2024
Int. Cl. H04N 19/117 (2014.01); H04N 19/159 (2014.01); H04N 19/176 (2014.01); H04N 19/82 (2014.01)
CPC H04N 19/117 (2014.11) [H04N 19/159 (2014.11); H04N 19/176 (2014.11); H04N 19/82 (2014.11)] 3 Claims
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1. A method of coding of video data, the method comprising:
receiving an intra prediction mode;
receiving an intra prediction reference line index, refIdx;
receiving a transform block width, nTbW;
receiving a transform block height, nTbH;
receiving neighboring samples, p[x][y];
deriving an intra prediction angle parameter specified by the intra prediction mode based on a mapping table;
deriving an inverse angle parameter, invAngle, based on dividing 16,384 by the intra prediction angle parameter;
in response to determining that the intra prediction mode is greater than or equal to 34 and the intra prediction angle parameter is less than 0, extending a reference sample array, ref[], as follows:

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deriving a value of prediction samples, predSamples[x][y], based on the reference sample array.