Patent ID: 11877013
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 4:
5. An apparatus for intra-prediction or inter-prediction processing of a video frame, including:
a reference sample obtaining unit configured to obtain a reference sample;
a subpixel offset value obtaining unit configured to obtain a value of a subpixel offset; and
a 4-tap interpolation filter configured to filter the reference sample to obtain a predicted sample value, wherein filter coefficients of the 4-tap interpolation filter are defined in a table as follows:, p
c0
c1
c2
c3

 0
16
32
16
0

 1
16
32
16
0

 2
15
31
17
1

 3
15
31
17
1

 4
14
30
18
2

 5
14
30
18
2

 6
13
29
19
3

 7
13
29
19
3

 8
12
28
20
4

 9
12
28
20
4

10
11
27
21
5

11
11
27
21
5

12
10
26
22
6

13
10
26
22
6

14
9
25
23
7

15
9
25
23
7

16
8
24
24
8

17
8
24
24
8

18
7
23
25
9

19
7
23
25
9

20
6
22
26
10

21
6
22
26
10

22
5
21
27
11

23
5
21
27
11

24
4
20
28
12

25
4
20
28
12

26
3
19
29
13

27
3
19
29
13

28
2
18
30
14

29
2
18
30
14

30
1
17
31
15

31
1
17
31
15, wherein p is a fractional part of the value of the subpixel offset, and c0, c1, c2, and c3 are the filter coefficients of the 4-tap interpolation filter.