Patent ID: 9600865
Date: 2017-03-21
CPC Classifications: G06T

Claim:
1. A method for processing an image signal by an input interface in communication with a non-transitory computer readable storage medium embodied thereon a program executable by a processor for performing the method, comprising: constructing, by the processor in communication with the input interface, a graph from the image signal, wherein the image signal is acquired by at least one sensor; determining, by the processor, a graph matrix from the graph and the image signal by adjusting a magnitude of a corresponding graph frequency components; determining, by the processor, a Krylov-based subspace based on the graph matrix and the image signal; determining, by the processor, a filter for the Krylov-based subspace, wherein the filter transforms the image signal to produce a filtered image signal; and outputting the filtered image signal via an output interface in communication with the processor, wherein noise in the filtered image signal is less than noise in the image signal and provides for improved signal processing.