Method for scaling channel of an image

A device for enhancing an image, comprising:

• an input interface configured to receive a frame of the image;
• a memory unit configured to store the frame;
• and
• a processor operatively coupled to the memory unit and the input interface and configured to:
• determine a first channel of low resolution and a second channel of high resolution based on the frame;
• apply a transformation function to the second channel to compute a low-resolution second channel;
• determine a correlation between the low-resolution second channel and the first channel;
• compute a high-pass second channel based at least in part on the second channel and the correlation;
• and
• enhance the image via scaling the first channel based at least in part on the high-pass second channel.

An apparatus, comprising:

• means for determining a first channel of low resolution and a second channel of high resolution based on a frame of an image;
• means for applying a transformation function to the second channel to compute a low-resolution second channel;
• means for determining a correlation between the low-resolution second channel and the first channel;
• means for computing a high-pass second channel based at least in part on the second channel and the correlation;
• and
• means for scaling the first channel based at least in part on the high-pass second channel.

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

• determining a first channel of low resolution and a second channel of high resolution based on a frame of an image;
• applying a transformation function to the second channel to compute a low-resolution second channel;
• determining a correlation between the low-resolution second channel and the first channel;
• computing a high-pass second channel based at least in part on the second channel and the correlation;
• and
• enhancing the image via scaling the first channel based at least in part on the high-pass second channel.