Reference sample padding and filtering for intra prediction in video compression

An apparatus for controlling intra prediction for decoding of a video sequence, the apparatus comprising:

• at least one memory configured to store computer program code;
• and
• at least one processor configured to access the at least one memory and operate according to the computer program code, the computer program code comprising:
• setting code configured to cause the at least one processor to set a table including a plurality of intra prediction modes respectively corresponding to a plurality of intra prediction angles;
• and
• selecting code configured to cause the at least one processor to select, for decoding the video sequence, one of the plurality of intra prediction modes, from the set table,
• wherein a number of the plurality of intra prediction modes included in the set table is 67, the set table including:
• predModeIntra
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10
• 11
• 12
• 13
• 14
• 15
• 16
• 17
• intraPredAngle
• —
• 32
• 29
• 26
• 23
• 20
• 18
• 16
• 14
• 12
• 10
• 8
• 6
• 4
• 3
• 2
• 1
• predModeIntra
• 18
• 19
• 20
• 21
• 22
• 23
• 24
• 25
• 26
• 27
• 28
• 29
• 30
• 31
• 32
• 33
• 34
• intraPredAngle
• 0
• −1
• −2
• −3
• −4
• −6
• −8
• −10
• −12
• −14
• −16
• −18
• −20
• −23
• −26
• −29
• −32
• predModeIntra
• 35
• 36
• 37
• 38
• 39
• 40
• 41
• 42
• 43
• 44
• 45
• 46
• 47
• 48
• 49
• 50
• 51
• intraPredAngle
• −29
• −26
• −23
• −20
• −18
• −16
• −14
• −12
• −10
• −8
• −6
• −4
• −3
• −2
• −1
• 0
• 1
• predModeIntra
• 52
• 53
• 54
• 55
• 56
• 57
• 58
• 59
• 60
• 61
• 62
• 63
• 64
• 65
• 66
• intraPredAngle
• 2
• −3
• 4
• 6
• 8
• 10
• 12
• 14
• 16
• 18
• 20
• 23
• 26
• 29
• 32
• where predModeIntra comprises the plurality of intra prediction modes, and intraPredAngle comprises the plurality of intra prediction angles.

A non-transitory computer-readable storage medium storing instructions that cause a processor to:

• set a table including a plurality of intra prediction modes respectively corresponding to a plurality of intra prediction angles;
• and
• select, for decoding a video sequence, one of the plurality of intra prediction modes, from the set table,
• wherein a number of the plurality of intra prediction modes included in the set table is 67, the set table including:
• predModeIntra
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10
• 11
• 12
• 13
• 14
• 15
• 16
• 17
• intraPredAngle
• —
• 32
• 29
• 26
• 23
• 20
• 18
• 16
• 14
• 12
• 10
• 8
• 6
• 4
• 3
• 2
• 1
• predModeIntra
• 18
• 19
• 20
• 21
• 22
• 23
• 24
• 25
• 26
• 27
• 28
• 29
• 30
• 31
• 32
• 33
• 34
• intraPredAngle
• 0
• −1
• −2
• −3
• −4
• −6
• −8
• −10
• −12
• −14
• −16
• −18
• −20
• −23
• −26
• −29
• −32
• predModeIntra
• 35
• 36
• 37
• 38
• 39
• 40
• 41
• 42
• 43
• 44
• 45
• 46
• 47
• 48
• 49
• 50
• 51
• intraPredAngle
• −29
• −26
• −23
• −20
• −18
• −16
• −14
• −12
• −10
• −8
• −6
• −4
• −3
• −2
• −1
• 0
• 1
• predModeIntra
• 52
• 53
• 54
• 55
• 56
• 57
• 58
• 59
• 60
• 61
• 62
• 63
• 64
• 65
• 66
• intraPredAngle
• 2
• 3
• 4
• 6
• 8
• 10
• 12
• 14
• 16
• 18
• 20
• 23
• 26
• 29
• 32
• where predModeIntra comprises the plurality of intra prediction modes, and intraPredAngle comprises the plurality of intra prediction angles.