Reduction Method for Pulse Noises Using Statistical t-Test
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- HANAIZUMI Hiroshi
- Faculty of Engineering, The University of Tokyo
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- FUJIMURA Sadao
- Faculty of Engineering, The University of Tokyo
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- TSUBAKI Hiroe
- Faculty of Engineering, The University of Tokyo
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- TOYOTA Hiromichi
- Faculty of Engineering, The University of Tokyo
Bibliographic Information
- Other Title
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- 統計的検定を用いたパルス状雑音の低減法
- 統計的検定を用いたパルス状雑音の低減法--雑音検出アルゴリズムの改良
- トウケイテキ ケンテイ オ モチイタ パルスジョウ ザツオン ノ テイゲンホウ
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Description
An algorithm for reduction of pulse noises in a scanner (1-dimensional) data is proposed. It is assumed that there is no pulse signal in the data. The algorithm consists of two procedures, that is, noise ‘detection’ and noise ‘reduction’ procedures. The former is based on the fact that the mean value of the data including pulse noises is different from that without them. The difference (therefore the noise) is detected by the statistical t-test on the null hypothesis that the mean values of two sets of data are equal. The criterion for the detection is derived from the statistics for the t-test.<br>Two kinds of non-linear adaptive noise reduction procedures are proposed here. They are adaptive because they are applied only if the noise is detected. In addition, one of them applies an averaging or a median filter adaptively to the property of the signal, also.<br>The validity of the algorithm is experimentally confirmed by simulation. The application of the the algorithm to 2-dimensional data is also shown.
Journal
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- Transactions of the Society of Instrument and Control Engineers
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Transactions of the Society of Instrument and Control Engineers 21 (6), 600-605, 1985
The Society of Instrument and Control Engineers
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Details 詳細情報について
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- CRID
- 1390001204503513984
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- NII Article ID
- 130003790004
- 130003790175
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- NII Book ID
- AN00072392
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- ISSN
- 18838189
- 04534654
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- NDL BIB ID
- 3117956
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- Data Source
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- JaLC
- NDL Search
- Crossref
- CiNii Articles
- OpenAIRE
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- Abstract License Flag
- Disallowed