JP2005318383A5 - - Google Patents

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JP2005318383A5
JP2005318383A5 JP2004135579A JP2004135579A JP2005318383A5 JP 2005318383 A5 JP2005318383 A5 JP 2005318383A5 JP 2004135579 A JP2004135579 A JP 2004135579A JP 2004135579 A JP2004135579 A JP 2004135579A JP 2005318383 A5 JP2005318383 A5 JP 2005318383A5
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Japan
Prior art keywords
defective pixel
edge direction
pixel correction
image sensor
signal
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JP2004135579A
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JP2005318383A (en
JP4307318B2 (en
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Priority to JP2004135579A priority Critical patent/JP4307318B2/en
Priority claimed from JP2004135579A external-priority patent/JP4307318B2/en
Priority to US11/086,057 priority patent/US7542082B2/en
Publication of JP2005318383A publication Critical patent/JP2005318383A/en
Publication of JP2005318383A5 publication Critical patent/JP2005318383A5/ja
Priority to US12/433,783 priority patent/US7929032B2/en
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Publication of JP4307318B2 publication Critical patent/JP4307318B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Claims (10)

複数の画素を備えた撮像素子から得られる画像データを基に、エッジ方向を検出するエッジ方向検出手段と、
前記エッジ方向検出手段によって検出されたエッジ方向に基づいて、前記撮像素子に含まれる欠陥画素を検出する検出手段と、
前記検出手段で検出された前記欠陥画素の補正を行う補正処理手段とを有することを特徴とする欠陥画素補正装置。 An edge direction detection means for detecting an edge direction based on image data obtained from an imaging device having a plurality of pixels;
Detecting means for detecting defective pixels included in the image sensor based on the edge direction detected by the edge direction detecting means;
A defective pixel correction apparatus comprising: correction processing means for correcting the defective pixel detected by the detection means. 請求項１に記載の欠陥画素補正装置であって、
前記撮像素子には、複数色の色フィルタが画素単位で配置されており、前記エッジ方向検出手段は、前記色フィルタが配置された画素のうち、一色の色フィルタの配置された画素の信号を用いて、複数色の色フィルタが配置された画素におけるエッジ方向を検出することを特徴とする欠陥画素補正装置。 The defective pixel correction device according to claim 1,
The image sensor has a plurality of color filters arranged in units of pixels, and the edge direction detection means outputs a signal of a pixel in which one color filter is arranged among the pixels in which the color filter is arranged. A defective pixel correction apparatus that detects an edge direction in a pixel in which a plurality of color filters are arranged. 請求項２に記載の欠陥画素補正装置であって、
前記撮像素子の色フィルタは原色ベイヤー配列であり、前記一色の色フィルタの配置された画素の信号とは、緑色信号であることを特徴とする欠陥画素補正装置。 The defective pixel correction device according to claim 2,
2. The defective pixel correction apparatus according to claim 1, wherein the color filter of the image sensor has a primary color Bayer arrangement, and the signal of the pixel on which the one color filter is arranged is a green signal. 請求項３に記載の欠陥画素補正装置であって、
前記エッジ方向検出手段は、緑色信号を使って前記エッジ方向を検出する際に、着目画素に配置されている色フィルタが、緑色の場合と、赤色もしくは青色の場合とで、前記エッジ方向検出の処理を変更することを特徴とする欠陥画素補正装置。 The defective pixel correction device according to claim 3,
When detecting the edge direction using a green signal, the edge direction detection means detects the edge direction depending on whether the color filter arranged in the pixel of interest is green or red or blue. A defective pixel correction apparatus characterized by changing processing. 請求項１に記載の欠陥画素補正装置であって、
前記撮像素子には、複数色の色フィルタが画素単位で配列されており、前記エッジ方向検出手段は、各画素において色キャリアを除去した信号を用いて前記エッジ方向を検出することを特徴とする欠陥画素補正装置。 The defective pixel correction device according to claim 1,
A plurality of color filters are arranged in a pixel unit in the image sensor, and the edge direction detection unit detects the edge direction using a signal from which a color carrier is removed in each pixel. Defective pixel correction device. 請求項１に記載の欠陥画素補正装置であって、
前記撮像素子の色フィルタは、補色配列または原色ベイヤー配列であることを特徴とする欠陥画素補正装置。 The defective pixel correction device according to claim 1 ,
The defective pixel correction device according to claim 1, wherein the color filter of the image sensor is a complementary color array or a primary color Bayer array. 請求項１乃至６のいずれか１項に記載の欠陥画素補正装置であって、
前記撮像素子に像を結像するレンズと、
前記撮像素子からの信号をＡ／Ｄ変換するＡ／Ｄ変換器と、
前記Ａ／Ｄ変換器から出力された信号に、カメラ信号処理を行う信号処理部とを有することを特徴とする欠陥画素補正装置。 The defective pixel correction device according to any one of claims 1 to 6,
A lens that forms an image on the image sensor;
An A / D converter for A / D converting a signal from the image sensor;
A defective pixel correction apparatus comprising: a signal processing unit that performs camera signal processing on a signal output from the A / D converter. 複数の画素を備えた撮像素子から得られる画像データにおける欠陥画素を補正する欠陥画素補正処理方法であって、
複数の画素を備えた撮像素子から得られる画像データを基に、エッジ方向を検出するエッジ方向検出工程と、
前記エッジ方向検出工程によって検出されたエッジ方向に基づいて、前記撮像素子に含まれる欠陥画素を検出する検出工程と、
前記検出工程で検出された前記欠陥画素の補正を行う補正処理工程とを有することを特徴とする欠陥画素補正処理方法。 A defective pixel correction processing method for correcting a defective pixel in image data obtained from an image sensor including a plurality of pixels,
Based on image data obtained from an image sensor having a plurality of pixels, an edge direction detection step for detecting an edge direction;
A detection step of detecting defective pixels included in the image sensor based on the edge direction detected by the edge direction detection step;
And a correction processing step of correcting the defective pixel detected in the detection step. 請求項８に記載の欠陥画素補正処理方法の各工程をコンピュータに実行させることを特徴とするコンピュータプログラム。 A computer program for causing a computer to execute each step of the defective pixel correction processing method according to claim 8. 請求項９に記載のコンピュータプログラムを記録したことを特徴とするコンピュータ読み取り可能な記録媒体。   A computer-readable recording medium on which the computer program according to claim 9 is recorded.
JP2004135579A 2004-03-30 2004-04-30 Defective pixel correction apparatus and defective pixel correction processing method Expired - Fee Related JP4307318B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2004135579A JP4307318B2 (en) 2004-04-30 2004-04-30 Defective pixel correction apparatus and defective pixel correction processing method
US11/086,057 US7542082B2 (en) 2004-03-30 2005-03-22 Method and apparatus for correcting a defective pixel
US12/433,783 US7929032B2 (en) 2004-03-30 2009-04-30 Method and apparatus for correcting a defective pixel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004135579A JP4307318B2 (en) 2004-04-30 2004-04-30 Defective pixel correction apparatus and defective pixel correction processing method

Related Child Applications (1)

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JP2008058368A Division JP4343988B2 (en) 2008-03-07 2008-03-07 Defective pixel correction apparatus and defective pixel correction processing method

Publications (3)

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JP2005318383A JP2005318383A (en) 2005-11-10
JP2005318383A5 true JP2005318383A5 (en) 2006-12-28
JP4307318B2 JP4307318B2 (en) 2009-08-05

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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100780224B1 (en) 2006-05-11 2007-11-27 삼성전기주식회사 Method of detecting and restoring defect pixels of image sensor
JP4958538B2 (en) * 2006-12-25 2012-06-20 三星電子株式会社 Image processing apparatus, image processing method, and imaging apparatus
JP5259449B2 (en) 2009-02-17 2013-08-07 オリンパス株式会社 Image processing apparatus and method, and program
JP5655355B2 (en) 2009-11-02 2015-01-21 ソニー株式会社 Pixel defect correction device, imaging device, pixel defect correction method, and program
KR101243363B1 (en) 2010-11-12 2013-03-13 에스케이하이닉스 주식회사 Apparatus and method for concealing a dead pixel
JP6063728B2 (en) * 2012-12-19 2017-01-18 ハンファテクウィン株式会社Ｈａｎｗｈａ Ｔｅｃｈｗｉｎ Ｃｏ．，Ｌｔｄ． Defective pixel detection device, defective pixel detection method, and program

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