Filtering noise from images with wavelet transforms.
A new method of filtering MR images is presented that uses wavelet transforms instead of Fourier transforms. The new filtering method does not reduce the sharpness of edges. However, the new method does eliminate any small structures that are similar in size to the noise eliminated. There are many possible extensions of the filter.
Weaver
J B
JB
Department of Radiology, Dartmough-Hitchcock Medical Center, Hanover, New Hampshire.
Xu
Y S
YS
Healy
D M
DM
Cromwell
L D
LD
D016477:Artifacts; D005069:Evaluation Studies as Topic; D005583:Fourier Analysis; D006801:Humans; D007089:Image Enhancement / Q000295:instrumentation / Q000379:methods* / Q000592:standards; D008279:Magnetic Resonance Imaging / Q000295:instrumentation / Q000379:methods* / Q000592:standards