Alternative transform in scalable video coding

A method of encoding video information, the method comprising:

• receiving video information associated with a reference layer and an enhancement layer, the enhancement layer comprising an enhancement layer block and the reference layer comprising a reference layer block corresponding to the enhancement layer block;
• determining whether a difference between a region neighboring the enhancement layer block and a region neighboring the reference layer block is greater than a threshold level;
• and
• performing one of:
• (i) based on a determination that the difference is not greater than the threshold level, encoding the enhancement layer block using a discrete sine transform, or (ii) based on a determination that the difference is greater than the threshold, encoding the enhancement layer block using a discrete cosine transform.

A method of decoding video information, the method comprising:

• receiving video information associated with a reference layer and an enhancement layer, the enhancement layer comprising an enhancement layer block and the reference layer comprising a reference layer block corresponding to the enhancement layer block;
• determining whether a difference between a region neighboring the enhancement layer block and a region neighboring the reference layer block is greater than a threshold level;
• and
• performing one of:
• (i) based on a determination that the difference is not greater than the threshold level, decoding the enhancement layer block using a discrete sine transform, or (ii) based on a determination that the difference is greater than the threshold, decoding the enhancement layer block using a discrete cosine transform.

A video coding device configured to code video data, the video coding device comprising:

• means for receiving video information associated with a reference layer and an enhancement layer, the enhancement layer comprising an enhancement layer block and the reference layer comprising a reference layer block corresponding to the enhancement layer block;
• means for determining whether a difference between a region neighboring the enhancement layer block and a region neighboring the reference layer block is greater than a threshold level;
• and
• means for coding, based on a determination that the difference is not greater than the threshold level, the enhancement layer block using a discrete sine transform.

A non-transitory computer readable medium comprising code that, when executed, causes an apparatus to:

• receive video information associated with a reference layer and an enhancement layer, the enhancement layer comprising an enhancement layer block and the reference layer comprising a reference layer block corresponding to the enhancement layer block;
• determine whether a difference between a region neighboring the enhancement layer block and a region neighboring the reference layer block is greater than a threshold level;
• and
• based on a determination that the difference is not greater than the threshold level, code the enhancement layer block using a discrete sine transform.