Method and apparatus for signal-to-noise ratio dependent image processing

A method for regional filtering of an image, said method comprising:

• computing at least one signal-to-noise ratio for at least one region of an image;
• determining a filter parameter for the at least one region based on the at least one signal-to-noise ratio;
• and
• processing the at least one region of the image based on the filter parameter.

An image processing system for signal-to-noise ratio dependent processing of an image, said system comprising:

• a signal-to-noise ratio processor for determining a signal-to-noise ratio for a region in an image;
• a parameter selection unit for selecting at least one filter parameter for the region based on said signal-to-noise ratio;
• and
• an image filter for filtering the region in said image based on said at least one filter parameter.

An image processing system for signal-to-noise ratio dependent processing of an image, said system comprising:

• a signal-to-noise ratio processor for determining a signal-to-noise ratio for an image;
• a parameter selection unit for selecting at least one filter parameter for based on said signal-to-noise ratio, wherein said parameter selection unit further selects locally varying parameters and globally varying parameters and wherein said locally varying parameters include blend and edge-smooth parameters;
• and
• an image filter for filtering said image based on said at least one filter parameter.

An image processing system for signal-to-noise ratio dependent processing of an image, said system comprising:

• a signal-to-noise ratio processor for determining a signal-to-noise ratio for an image;
• a parameter selection unit for selecting at least one filter parameter for based on said signal-to-noise ratio, wherein said parameter selection unit further selects locally varying parameters and globally varying parameters and wherein said locally varying parameters are determined based on a histogram of local signal-to-noise ratios;
• and
• an image filter for filtering said image based on said at least one filter parameter.

An image processing system for signal-to-noise ratio dependent processing of an image, said system comprising:

• a signal-to-noise ratio processor for determining a signal-to-noise ratio for an image;
• a parameter selection unit for selecting at least one filter parameter for based on said signal-to-noise ratio, wherein said parameter selection unit further selects locally varying parameters and globally varying parameters and wherein said globally varying parameters are determined based on a histogram of signal-to-noise ratios for a plurality of images;
• and
• an image filter for filtering said image based on said at least one filter parameter.

An image processing system for signal-to-noise ratio dependent processing of an image, said system comprising:

• a signal-to-noise ratio processor for determining a signal-to-noise ratio for an image;
• a parameter selection unit for selecting at least one filter parameter for based on said signal-to-noise ratio, wherein said parameter selection unit further comprises a lookup table relating said signal-to-noise ratio and said filter parameters;
• and
• an image filter for filtering said image based on said at least one filter parameter.