Signal processing apparatus, signal processing method, and storage medium

Patent metadata

Field	Value
Publication number	US-2017288713-A1
Application number	US-201715470023-A
Country	US
Kind code	A1
Filing date	Mar 27, 2017
Priority date	Mar 31, 2016
Publication date	Oct 5, 2017
Grant date	—

Abstract

A signal processing apparatus includes a unit configured to generate noise cut data by deducting a predetermined noise value from values of respective signals constituting input data and a stochastic resonance processing unit configured to subject the noise cut data to a predetermined stochastic resonance processing. The predetermined stochastic resonance processing is processing to output, in a method of synthesizing a result of parallelly performing steps of adding new noise to the noise cut data to subject the resultant data to a binary processing, a value obtained in a case where the parallel number is infinite.

First claim

What is claimed is:

1 . A signal processing apparatus, comprising:
an acquisition unit configured to acquire input data; a unit configured to generate noise cut data by deducting a predetermined noise value from values of respective signals of the input data; a stochastic resonance processing unit configured to subject the noise cut data to a predetermined stochastic resonance processing to thereby generate stochastic resonance data; and an output unit configured to output the result of the predetermined stochastic resonance processing,
wherein:
the predetermined stochastic resonance processing is processing to output, in a method of synthesizing a result of parallelly performing steps of adding new noise to the noise cut data to subject the resultant data to a binary processing, a value obtained in a case where the parallel number is infinite equivalency.

2 . The signal processing apparatus according to claim 1 , wherein, the predetermined noise value is determined in advance based on the input data in a case where a singular signal is not included therein.

3 . The signal processing apparatus according to claim 1 , further comprising:
an extraction unit configured to extract a singular signal based on the result of the predetermined stochastic resonance processing.

4 . The signal processing apparatus according to claim 3 , wherein,
the extraction unit extracts, as the singular signal, a signal having a value higher than a judgment threshold value determined in advance among the stochastic resonance data.

5 . The signal processing apparatus according to claim 1 , further comprising:
a reading unit configured to read an image wherein the input data is acquired by reading of the reading unit.

6 . The signal processing apparatus according to claim 5 , further comprising:
a printing unit configured to print an image, wherein the reading unit reads an image printed by the printing unit.

7 . The signal processing apparatus according to claim 6 , wherein,
the printing unit prints the image using a printing head configured by arranging a plurality of printing elements for ejecting ink and the singular signal is a signal corresponding to a stripe-like unevenness in the image caused by the ejection failure of the printing element.

8 . The signal processing apparatus according to claim 7 , wherein,
based on the result of the predetermined stochastic resonance processing, the printing unit is subjected to a maintenance processing.

9 . The signal processing apparatus according to claim 7 , wherein,
based on the result of the predetermined stochastic resonance processing, image data printed by the printing unit is subjected to an image processing.

10 . The signal processing apparatus according to claim 1 , wherein,
the new noise added to the noise cut data is white noise.

11 . The signal processing apparatus according to claim 1 , wherein,
the new noise added to the noise cut data is normal distribution noise.

12 . The signal processing apparatus according to claim 1 , wherein,
the predetermined stochastic resonance processing is performed by using the following formula to calculate processed data J(x) from the input data I(x),

J
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=

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1

T
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I
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0

I
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T
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K

1
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(

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K

T
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K

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I
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T

(where T is a threshold value to quantize the input data and K is a noise strength).

13 . The signal processing apparatus according to claim 1 , further comprising:
a display control unit configured to cause a display apparatus to display the result of the predetermined stochastic resonance processing executed by the stochastic resonance processing unit.

14 . A signal processing apparatus, comprising:
an acquisition unit configured to acquire input data; a unit configured to generate noise cut data by deducting a predetermined noise value from values of respective signals of the input data; a stochastic resonance processing unit configured to subject the input data to a predetermined stochastic resonance processing to subsequently multiply the noise cut data to thereby generate stochastic resonance data; and an output unit configured to output the result of the predetermined stochastic resonance processing,
wherein:
the predetermined stochastic resonance processing is processing to output, in a method of synthesizing a result of parallelly performing steps of adding new noise to the input data to subject the resultant data to a binary processing, a value obtained in a case where the parallel number is infinite equivalency.

15 . The signal processing apparatus according to claim 14 , wherein,
the predetermined stochastic resonance processing is performed by using the following formula to calculate processed dat

Assignees

• Canon Kk

Inventors

• Suwa Tetsuya
• Ishikawa Tomokazu
• Tanaka Wakako
• Hori Shinjiro

Classifications

• H04N1/409 Primary

  Edge or detail enhancement; Noise or error suppression · CPC title

• G06V10/30

  Noise filtering · CPC title

• G06F2218/16

  by matching signal segments · CPC title

• G06F2218/04

  Denoising · CPC title

• H04B1/10 Primary

  Means associated with receiver for limiting or suppressing noise or interference · CPC title