Reduction filter based on smart neighbor selection and weighting (nrf-snsw)

A video processor for reducing noise in a video image comprising:

• electronic circuitry configured to receive a first image, a second image and motion information wherein said first image is an image to be filtered and said second image is a filtered image wherein said second image is temporally related to said first image;
• and
• for at least one pixel in said first video image:
• configured to select at least one neighbor of said pixel from said first video image and configured to select at least one neighbor of said pixel from said second video image,
• wherein selection of said neighbors from said first video image and said second video image is based on said motion information;
• configured to select a subset of said neighbors wherein said subset is less than or equal to a sum of neighbors from said first video image and said second video image;
• configured to determine a weighted average of said subset of said neighbors and said pixel;
• and
• and configured to output said weighted average as a filtered pixel of said first video image.

An article, comprising:

• a storage medium having stored thereon instructions that when executed by a processor results in the following:
• receiving a first video image, a second video image and motion information wherein said first image is an image to be filtered and said second image is a filtered image wherein said second image is temporally related to said first image;
• for at least one pixel in said first video image:
• selecting at least one neighbor of said pixel from said first video image and selecting at least one neighbor of said pixel from said second video image, wherein selection of said neighbors from said first video image and said second video image is based on said motion information;
• selecting a subset of said neighbors wherein said subset is less than or equal to a sum of neighbors from said first video image and said second video image;
• determining a weighted average of said subset of said neighbors and said pixel;
• and
• outputting said weighted average as a filtered pixel of said first video image.