RE-SAMPLING FILTERS FOR SCALABLE VIDEO CODING

1 . A method comprising:

receiving, by a computing device, a plurality of sample values;

determining, by the computing device, a filter to determine an up-sampled value for a first layer for a video, wherein the filter has a set of coefficient values of [0, 1, −4, 13, 60, −8, 3, −1] assigned to the filter;

determining, by the computing device, the up-sampled value by applying the set of coefficient values of [0, 1, −4, 13, 60, −8, 3, −1] to the plurality of sample values; and

outputting, by the computing device, the up-sampled value for use in coding a second layer of a higher resolution than the first layer.

2 . The method of claim 1 , wherein a phase offset for the filter is a −3/16 phase offset.

3 . The method of claim 1 , wherein the filter comprises a first filter, the set of coefficient values comprise a first set of coefficient values, and the up-sampled value comprises a first up-sampled value, the method further comprising:

determining a second filter, wherein the second filter has a second set of coefficient values of [−1, 3, −8, 60, 13, −4, 1, 0] assigned for the second filter;

determining a second up-sampled value by applying the second set of coefficient values of [−1, 3, −8, 60, 13, −4, 1, 0] to the plurality of sample values; and

outputting the second up-sampled value for use in coding the second layer of the higher resolution than the first layer.

4 . The method of claim 1 , further comprising:

communicating information for the set of coefficient values from an encoder to a decoder, the information allowing the decoder to determine the set of coefficient values assigned for the filter.

5 . The method of claim 1 , wherein the up-sampled value is used for encoding the second layer.

6 . The method of claim 1 , wherein the up-sampled value is used for decoding the second layer.

7 . A method comprising:

receiving, by a computing device, a plurality of sample values;

determining, by the computing device, a filter to determine an up-sampled value for a first layer for a video, wherein the filter has a set of coefficient values assigned to the filter;

determining, by the computing device, the up-sampled value by applying the set of coefficient values of to the plurality of sample values;

outputting, by the computing device, the up-sampled value for use in coding a second layer of a higher resolution than the first layer; and

communicating, by the computing device, information for the set of coefficient values to a decoder, the information allowing the decoder to determine the set of coefficient values assigned for the filter.

8 . The method of claim 7 , wherein communicating comprises:

communicating a first portion of the set of coefficient values from the encoder to the decoder, wherein the decoder determines a second portion of the set of coefficient values based on the first portion of the set of coefficient values.

9 . The method of claim 8 , wherein the set of coefficient values are time reversed.

10 . The method of claim 7 , wherein the information comprises a flag indicating a method to use to determine the set of coefficient values.

11 . The method of claim 7 , wherein the information comprises differences between the set of coefficient values and another set of coefficient values for a different filter.

12 . A method comprising:

determining, by the computing device, a filter to determine an up-sampled value for a first layer for a video, wherein the filter has a set of coefficient values of [−1, 3, −8, 60, 13, −4, 1, 0] assigned to the filter;

determining, by the computing device, the up-sampled value by applying the set of coefficient values of [−1, 3, −8, 60, 13, −4, 1, 0] to the plurality of sample values; and

outputting, by the computing device, the up-sampled value for use in coding a second layer of a higher resolution than the first layer.

13 . The method of claim 12 , wherein a phase offset for the second filter is a 3/16 phase offset.

14 . The method of claim 12 , wherein the filter comprises a first filter, the set of coefficient values comprise a first set of coefficient values, and the up-sampled value comprises a first up-sampled value, the method further comprising:

determining a second filter, wherein the second filter has a second set of coefficient values of [0, 1, −4, 13, 60, −8, 3, −1] assigned for the second filter;

determining a second up-sampled value by applying the second set of coefficient values of [0, 1, −4, 13, 60, −8, 3, −1] to the plurality of sample values; and

outputting the second up-sampled value for use in coding the second layer of the higher resolution than the first layer.

15 . The method of claim 12 , wherein the up-sampled value is used for encoding the second layer.

16 . The method of claim 12 , wherein the up-sampled value is used for decoding the second layer.

17 . The method of claim 12 , further comprising:

communicating information for the set of coefficient values from an encoder to a decoder, the information allowing the decoder to determine the set of coefficient values assigned for the filter.

18 . The method of claim 17 , wherein communicating comprises:

communicating a first portion of the set of coefficient values from the encoder to the decoder, wherein the decoder determines a second portion of the set of coefficient values based on the first portion of the set of coefficient values.

19 . The method of claim 17 , wherein the information comprises a flag indicating a method to use to determine the set of coefficient values.

20 . The method of claim 17 , wherein the information comprises differences between the set of coefficient values and another set of coefficient values for a different filter.