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JPH0686104A Expired / Lapsed JP ⏱️ 0.0 years remaining

Noise reduction device

Assignee: Panasonic Holdings Corp
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Filing: 1992-09-04
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Granted: —
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Expires: 2012-09-04
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Abstract

Abstract Translated from Japanese (57)【要約】 【目的】 画像エッジ部がなまることなく、残像が低減 し、かつ、効果的にノイズを低減させる。 【構成】 周辺画素取り込み回路5、絶対値回路6〜1 1…、相関判断回路12〜17…、画素選択回路18〜 23…、加算回路25、相関個数計数回路24、除算回 路26を設け、中心画素との相関の高い画素を加算し、 その画素数で除算し、中心画素の値を保持する。さら に、ノイズ性分は周辺画素にランダムな値で重畳し、加 算回路25、除算回路26によりノイズ成分を平均化し てノイズを低減する。 (57) [Abstract] [Purpose] To reduce afterimage and effectively reduce noise without blunting the image edge portion. [Structure] Peripheral pixel capturing circuit 5, absolute value circuits 6-1 1 ..., correlation determination circuits 12 to 17 ..., pixel selection circuit 18 to 23, an addition circuit 25, a correlation number counting circuit 24, and a division circuit 26 are provided to add pixels having a high correlation with the central pixel, It is divided by the number of pixels and the value of the central pixel is retained. Further, the noise component is superimposed on peripheral pixels with a random value, and the addition circuit 25 and the division circuit 26 average the noise components to reduce noise.

Inventors

  • 👤 Masato Nishizawa
  • 👤 眞人 西澤

Bibliographic Details

Application Number —
Jurisdiction JP
Data Source google_patents
Last Synchronized 2026-11-09 20:53
CPC Classifications
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