Patent ID: 7315656

Claim:
A method of digitally enhancing an acquired image, comprising: performing at least one wavelet transformation process on the acquired image, the at least one wavelet transformation process providing at least one low pass spatial frequency; determining a dynamic range of at least one low pass spatial frequency; determining at least one mixing value from the at least one low pass spatial frequency; applying the at least one mixing value to the at least one low pass spatial frequency to produce a transformed output image; reformatting the transformed output image to provide a mixed output image, wherein the reformatting the transformed images includes, for each wavelet transformation process performed on the acquired image: upscaling the transformed output image by two to provide a first upscaled image; calculating a horizontal high pass value from the first upscaled image; calculating a horizontal low pass value from the first upscaled image; translating the first upscaled image by ½ pixel in a first orthogonal direction and by ½ pixel in a second orthogonal direction; upscaling the first upscaled image by two to provide a second upscaled image; calculating a total high pass value from the second upscaled image; calculating a total low pass value from the upscaled decimated image; and translating the second upscaled image by ½ pixel in the first orthogonal direction and by ½ pixel in the second orthogonal direction; and subtracting the mixed output image from the acquired image to provide an enhanced image.