Multiple measurement noise reducing system using...

Details Multiple measurement noise reducing system using... Multiple measurement noise reducing system using...

H - Electricity

04

N

358/11.2

H04N 5/32 (2006.01) A61B 6/00 (2006.01) H04N 1/40 (2006.01)

Patent

CA 1213989

ABSTRACT Extraneous signals or artifacts are reduced in a multiple measurement noise reducing system such as an x-ray imaging system by processing a plurality of measurements to obtain a first image signal of an object representing a desired parameter such as a blood vessel, processing the plurality of measurements to provide a second image signal having increased signal-to-noise, low pass filtering the first image signal, high pass filtering the second image signal, and then combining the two filtered signals. The filter frequencies are varied in response to the presence of arti- facts to minimize effects of the artifact on the combined signal.

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