Patent ID: 9111339
Filing Date: 2015-08-18
Classification: G06T

Abstract:
1. A method of reducing noise in an image, the method comprising: reducing noise in a luminance channel of the image using a first filtering procedure; reducing noise in a chrominance channel of the image using a second filtering procedure; decomposing the chrominance channel into a first plurality of frequency sub-bands after the second filtering procedure, each frequency sub-band of the first plurality of frequency sub-bands representing the chrominance channel at a first resolution; further reducing the noise in the chrominance channel using a third filtering procedure after the decomposing of the chrominance channel into the first plurality of frequency sub-bands, the third filtering procedure being applied to each frequency sub-band of the first plurality of frequency sub-bands; and decomposing a lowest frequency sub-band of the first plurality of frequency sub-bands into a second plurality of frequency sub-bands after the third filtering procedure, each frequency sub-band of the second plurality of frequency sub-bands representing the chrominance channel at a second resolution that is lower than the first resolution.