Method and apparatus for image detail enhancement using filter bank

A method for image detail enhancement, comprising the steps of:

• filtering an input signal ƒ representing an image, through each of a plurality of filters, wherein the output of each filter forms a detail signal representing an enhancement;
• applying an amplitude scaler to each detail signal so that amplitude enhancement values above a threshold in each detail signal is essentially scaled down;
• combining the scaled down detail signals with the input signal to generate an enhanced signal g representing a detail enhanced image.

A image detail enhancement system, comprising:

• a bank of filters, each filter having a frequency response covering a frequency range, for filtering an input signal ƒ representing an image, through each of a plurality of filters, wherein the output of each filter forms a detail signal representing an enhancement;
• and
• a combiner that combines the detail signals from the filters with the input signal to generate an enhanced signal g representing a detail enhanced image.

A image detail enhancement system, comprising:

• bank of filters for filtering an input signal ƒ representing an image, through each filter, wherein the output of each filter forms a detail signal representing an enhancement;
• an amplitude-scaler that scales each detail signal so that amplitude enhancement values above a threshold in each detail signal is essentially scaled down;
• a combiner that combines the scaled down detail signals with the input signal to generate an enhanced signal g representing a detail enhanced image.