US 2008/0175323 A1Published application

Eight pixels integer transform

AssigneeTandberg Telecom AS

InventorGisle BJONTEGARD

Life of this patent

Estimating the term…

Abstract

A method of video coding/decoding that includes transforming to/from transform coefficients and residual pixel data in moving pictures by a set of vectors. Two alternative vector sets are disclosed both providing an optimal balance between good performance and simplified computation.

Claims9

Dependent claims

A method of video coding, comprising:

transforming a first block of residual pixel values of pictures by an integer transform function;
generating a corresponding second block of transform coefficients,
wherein the integer transform function includes a vector set of eight vectors, said vector set is defined as:
0

:
[
13
13
13
13
13
13
13

13
]
*
n
1

:
[
19
15
9
3
-
3
-
9
-
15
-
19
]
*
n
2

:
[
17
7
-
7
-
17
-
17
-
7
7

17
]
*
n
3

:
[
9
3
-
19
-
15
15
19
-
3

-
9
]
*
n
4

:
[
13
-
13
-
13
13
13
-
13
-
13

13
]
*
n
5

:
[
15
-
19
-
3
9
-
9
3
19
-
15
]
*
n
6

:
[
7
-
17
17
-
7
-
7
17
-
17

7
]
*
n
7

:
[
3
-
9
15
-
19
19
-
15
9

-
3
]
*
n
or
0

:
[
169
169
169
169
169
169
169
169
]
*
m
1

:
[
247
195
117
39
-
39
-
117
-
195
-
247
]
*
m
2

:
[
221
91
-
91
-
221
-
221
-
91
91
221
]
*
m
3

:
[
183
-
59
-
243
-
135
135
243
59
-
183
]
*
m
4

:
[
169
-
169
-
169
169
169
-
169
-
169
169
]
*
m
5

:
[
135
-
243
59
183
-
183
-
59
243
-
135
]
*
m
6

:
[
91
-
221
221
-
91
-
91
221
-
221
91
]
*
m
7

:
[
39
-
117
195
-
247
247
-
195
117
-
39
]
*
m
where m and n are non-zero integer numbers.

304 more elements

Dependencies are inferred from the claim text.

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