Noise reducing apparatus and noise reducing method

Details Noise reducing apparatus and noise reducing method Noise reducing apparatus and noise reducing method

2006-11-14

2006-11-14

Mehta, Bhavesh M. (Department: 2624)

Image analysis

Image enhancement or restoration

Artifact removal or suppression

C382S236000, C382S298000

Reexamination Certificate

active

07136538

ABSTRACT:
In order to reduce noise appropriately according to scaling factor and a degree of motion of an image and to suppress degradation in image quality resulting from the noise reduction to a negligible level, a noise reduction control section outputs a noise detection instruction, a noise detection threshold instruction and a filtering mode instruction based on a scale factor output from a scale factor calculating section and a motion detection result output from a motion detecting section. A mosquito noise reducing section and a blocking artifact reducing section in a noise reducing section adaptively conducts an appropriate noise reducing process using noise detection sensitivity and the number of filter taps and a filter coefficient of a smoothing filter according to these instructions.

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IEEE document entitled “Space-Scale Adaptive Noise Reduction in Images Based on Thresholding Neural Network” by Xiao-Ping Zhang; Departemnt of Electrical and Comnputer Engineering Ryerson Polytechnic University.

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