JP2008306297A5 - - Google Patents
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- JP2008306297A5 JP2008306297A5 JP2007149555A JP2007149555A JP2008306297A5 JP 2008306297 A5 JP2008306297 A5 JP 2008306297A5 JP 2007149555 A JP2007149555 A JP 2007149555A JP 2007149555 A JP2007149555 A JP 2007149555A JP 2008306297 A5 JP2008306297 A5 JP 2008306297A5
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- 238000003384 imaging method Methods 0.000 claims 20
- 238000000034 method Methods 0.000 claims 20
- 238000009825 accumulation Methods 0.000 claims 9
- 238000001514 detection method Methods 0.000 claims 6
- 210000000554 Iris Anatomy 0.000 claims 5
- 239000002131 composite material Substances 0.000 claims 4
- 230000004044 response Effects 0.000 claims 2
- 230000003247 decreasing Effects 0.000 claims 1
Claims (9)
前記撮像手段で撮像された画像に係る輝度変化量を算出する輝度変化量算出手段と、
加算途中の画像信号を保持するメモリを有し、前記撮像手段の出力信号と前記メモリに保持された画像信号との加算処理を行って、所定枚数分の画像の合成画像信号を出力する累算手段と、
前記累算手段を制御する制御手段と、
前記累算手段の出力信号又は前記メモリの出力信号に信号処理を施す信号処理手段と、
前記信号処理手段により信号処理が施された信号に符号化処理を施すとともに、次の符号化処理で生成するピクチャの画像タイプを示す第１の情報を出力する符号化処理手段とを備え、
前記輝度変化量算出手段は、算出した輝度値と、保持している前回算出の輝度値とを比較し、
前記制御手段は、前記輝度変化量算出手段による比較の結果、輝度値が増加しているとともに変化量が所定の値よりも大きく、かつ前記符号化処理手段が前回の符号化処理のときに出力した前記第１の情報がＢピクチャ又はＰピクチャを示すものである場合には、前記累算手段での加算処理を途中で終了させることを特徴とする撮像装置。 Imaging means for performing an operation related to exposure and reading a plurality of times within one field period determined by a recording method, and converting an image into an electrical signal;
A luminance change amount calculating means for calculating a luminance change amount relating to an image captured by the imaging means;
An accumulator having a memory for holding an image signal in the middle of addition and performing an addition process of the output signal of the imaging means and the image signal held in the memory to output a composite image signal of a predetermined number of images; Means,
Control means for controlling the accumulation means;
Signal processing means for performing signal processing on the output signal of the accumulation means or the output signal of the memory;
Coding processing means for performing coding processing on the signal subjected to signal processing by the signal processing means and outputting first information indicating an image type of a picture to be generated in the next coding processing;
The luminance change amount calculating means compares the calculated luminance value with the previously calculated luminance value held,
As a result of the comparison by the luminance change amount calculation means, the control means outputs a luminance value which is increased and the change amount is larger than a predetermined value, and the encoding processing means is the previous encoding process. In the case where the first information indicates a B picture or a P picture, the adding process in the accumulating unit is terminated in the middle.
前記保持手段の出力信号にカメラ信号処理を施すカメラ信号処理手段とを有することを特徴とする請求項１記載の撮像装置。 The signal processing means includes holding means for holding the output signal of the accumulating means or the output signal of the memory for one field period;
The imaging apparatus according to claim 1, further comprising camera signal processing means for performing camera signal processing on an output signal of the holding means.
加算途中の画像信号を保持するメモリを有し、前記撮像手段の出力信号と前記メモリに保持された画像信号との加算処理を行って、所定枚数分の画像の合成画像信号を出力する累算手段と、
前記累算手段の出力信号に基づいて、画像の輝度変化量を１フレーム期間毎に算出する輝度変化量算出手段と、
前記輝度変化量算出手段の出力信号に応じて、前記累算手段の制御信号を出力する制御手段と、
前記累算手段の出力信号又は前記メモリの出力信号の一方を選択し出力する選択手段と、
前記選択手段の出力信号を前記記録方式で定められるフィールド期間保持する保持手段と、
前記保持手段の出力信号にカメラ信号処理を施すカメラ信号処理手段と、
前記カメラ信号処理手段の出力信号に符号化処理を施す符号化処理手段とを備え、
前記符号化処理手段は、次の符号化処理で生成するピクチャの画像タイプを示す情報を第１の情報として出力し、
前記輝度変化量算出手段は、前記累算手段の出力信号に基づいて算出した輝度値と保持していた前回算出の輝度値との比較を行い、輝度変化量が所定の値よりも大きく、かつ前記累算手段の出力信号に基づいて算出した輝度値が増加しているか否かを示す輝度変化検出信号を出力し、
前記制御手段は、前記輝度変化量算出手段からの輝度変化検出信号及び前記符号化処理手段が前回の符号化処理のときに出力した第１の情報により、前記輝度変化検出信号が増加を示し、かつ前記第１の情報がＢピクチャ又はＰピクチャを示す場合には、加算処理を途中で終了するように前記累算手段に制御信号を出力することを特徴とする撮像装置。 Imaging means for performing an operation related to exposure and reading a plurality of times within one field period and converting an image into an electric signal for a field period determined by a recording method;
An accumulator having a memory for holding an image signal in the middle of addition and performing an addition process of the output signal of the imaging means and the image signal held in the memory to output a composite image signal of a predetermined number of images; Means,
A luminance change amount calculating means for calculating a luminance change amount of the image every frame period based on an output signal of the accumulation means;
Control means for outputting a control signal of the accumulating means in response to an output signal of the luminance change amount calculating means;
Selection means for selecting and outputting one of the output signal of the accumulation means or the output signal of the memory;
Holding means for holding the output signal of the selection means for a field period determined by the recording method;
Camera signal processing means for performing camera signal processing on the output signal of the holding means;
Coding processing means for performing coding processing on the output signal of the camera signal processing means,
The encoding processing means outputs information indicating an image type of a picture generated in the next encoding processing as first information,
The luminance change amount calculating means compares the luminance value calculated based on the output signal of the accumulating means and the previously calculated luminance value, the luminance change amount is larger than a predetermined value, and Outputting a luminance change detection signal indicating whether or not the luminance value calculated based on the output signal of the accumulating means is increased;
The control means indicates that the brightness change detection signal is increased by the brightness change detection signal from the brightness change amount calculating means and the first information output by the encoding processing means during the previous encoding process, In addition, when the first information indicates a B picture or a P picture, an imaging apparatus is characterized in that a control signal is output to the accumulating means so that the addition process is terminated halfway.
加算途中の画像信号を保持するメモリを有し、前記撮像手段の出力信号と前記メモリに保持された画像信号との加算処理を行って、所定枚数分の画像の合成画像信号を出力する累算手段と、
前記撮像手段の出力信号に基づいて、画像の輝度変化量を前記撮像手段の蓄積期間毎に算出する輝度変化量算出手段と、
前記輝度変化量算出手段の出力信号に応じて、前記累算手段の制御信号を出力する制御手段と、
前記累算手段の出力信号を前記記録方式で定められるフィールド期間保持する保持手段と、
前記保持手段の出力信号にカメラ信号処理を施すカメラ信号処理手段と、
前記カメラ信号処理手段の出力信号に符号化処理を施す符号化処理手段とを備え、
前記符号化処理手段は、次の符号化処理で生成するピクチャの画像タイプを示す情報を第１の情報として出力し、
前記輝度変化量算出手段は、前記累算手段の出力信号に基づいて算出した輝度値と保持していた前回算出の輝度値との比較を行い、輝度変化量が所定の値よりも大きく、かつ前記累算手段の出力信号に基づいて算出した輝度値が増加しているか否かを示す輝度変化検出信号を出力し、
前記制御手段は、前記輝度変化量算出手段からの輝度変化検出信号及び前記符号化処理手段が前回の符号化処理のときに出力した第１の情報により、前記輝度変化検出信号が増加を示し、かつ前記第１の情報がＢピクチャ又はＰピクチャを示す場合には、加算処理を途中で終了するように前記累算手段に制御信号を出力することを特徴とする撮像装置。 Imaging means for performing an operation related to exposure and reading a plurality of times within one field period and converting an image into an electric signal for a field period determined by a recording method;
An accumulator having a memory for holding an image signal in the middle of addition and performing an addition process of the output signal of the imaging means and the image signal held in the memory to output a composite image signal of a predetermined number of images; Means,
A luminance change amount calculating means for calculating a luminance change amount of the image for each accumulation period of the image pickup means based on an output signal of the image pickup means;
Control means for outputting a control signal of the accumulating means in response to an output signal of the luminance change amount calculating means;
Holding means for holding the output signal of the accumulating means for a field period determined by the recording method;
Camera signal processing means for performing camera signal processing on the output signal of the holding means;
Coding processing means for performing coding processing on the output signal of the camera signal processing means,
The encoding processing means outputs information indicating an image type of a picture generated in the next encoding processing as first information,
The luminance change amount calculating means compares the luminance value calculated based on the output signal of the accumulating means and the previously calculated luminance value, the luminance change amount is larger than a predetermined value, and Outputting a luminance change detection signal indicating whether or not the luminance value calculated based on the output signal of the accumulating means is increased;
The control means indicates that the brightness change detection signal is increased by the brightness change detection signal from the brightness change amount calculating means and the first information output by the encoding processing means during the previous encoding process, In addition, when the first information indicates a B picture or a P picture, an imaging apparatus is characterized in that a control signal is output to the accumulating means so that the addition process is terminated halfway.
前記制御手段は、
前記輝度変化量算出手段による比較の結果、輝度値が増加しているとともに変化量の絶対値が所定の値よりも大きく、かつ前記符号化処理手段が前回の符号化処理のときに出力した前記第１の情報がＢピクチャ又はＰピクチャを示すものである場合には、アイリスを絞るように前記アイリスを制御し、
前記輝度変化量算出手段による比較の結果、輝度値が減少しているとともに変化量の絶対値が所定の値よりも大きく、かつ前記符号化処理手段が前回の符号化処理のときに出力した前記第１の情報がＢピクチャ又はＰピクチャを示すものである場合には、アイリスを開くように前記アイリスを制御することを特徴とする請求項１〜６の何れか１項に記載の撮像装置。 With an iris that controls the amount of incident light,
The control means includes
As a result of the comparison by the luminance change amount calculation means, the luminance value is increased and the absolute value of the change amount is larger than a predetermined value, and the encoding processing means outputs the previous encoding process. If the first information indicates a B picture or a P picture, the iris is controlled to narrow down the iris,
As a result of the comparison by the luminance change amount calculation means, the luminance value is decreased and the absolute value of the change amount is larger than a predetermined value, and the encoding processing means outputs the previous encoding process. The imaging apparatus according to any one of claims 1 to 6, wherein when the first information indicates a B picture or a P picture, the iris is controlled to open the iris.
前記撮像工程で撮像された画像に係る輝度変化量を算出する輝度変化量算出工程と、
加算途中の画像信号をメモリに保持させる工程を含み、前記撮像工程での出力と前記メモリに保持された画像信号との加算処理を行って、所定枚数分の画像の合成画像信号を出力する累算工程と、
前記累算工程に係る制御を行う制御工程と、
前記累算工程での出力又は前記メモリの出力に信号処理を施す信号処理工程と、
前記信号処理工程にて信号処理が施された信号に符号化処理を施し、かつ次の符号化処理で生成するピクチャの画像タイプを示す第１の情報を出力する符号化処理工程とを有し、
前記輝度変化量算出工程では、算出した輝度値と、保持している前回算出の輝度値とを比較し、
前記制御工程では、前記輝度変化量算出工程での比較の結果、輝度値が増加しているとともに変化量が所定の値よりも大きく、かつ前記符号化処理工程にて前回の符号化処理のときに出力した前記第１の情報がＢピクチャ又はＰピクチャを示すものである場合には、前記累算工程での加算処理を途中で終了させることを特徴とする撮像方法。 An imaging step of performing an operation related to exposure and reading a plurality of times within one field period determined by a recording method, and converting an image into an electrical signal;
A luminance change amount calculating step of calculating a luminance change amount related to the image captured in the imaging step;
A step of holding an image signal in the middle of addition in a memory, and performing an addition process of the output in the imaging step and the image signal held in the memory to output a composite image signal of a predetermined number of images. Calculation process,
A control step for performing control related to the accumulation step;
A signal processing step of performing signal processing on the output in the accumulation step or the output of the memory;
A coding process step of performing coding processing on the signal subjected to signal processing in the signal processing step and outputting first information indicating an image type of a picture generated in the next coding processing; ,
In the luminance change amount calculating step, the calculated luminance value is compared with the previously calculated luminance value,
In the control step, as a result of the comparison in the luminance change amount calculating step, the luminance value is increased and the change amount is larger than a predetermined value, and the previous encoding process is performed in the encoding processing step. An imaging method characterized in that, when the first information output to (2) indicates a B picture or a P picture, the addition process in the accumulation step is terminated halfway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007149555A JP4953926B2 (en) | 2007-06-05 | 2007-06-05 | Imaging apparatus and imaging method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007149555A JP4953926B2 (en) | 2007-06-05 | 2007-06-05 | Imaging apparatus and imaging method |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2008306297A JP2008306297A (en) | 2008-12-18 |
| JP2008306297A5 true JP2008306297A5 (en) | 2010-07-15 |
| JP4953926B2 JP4953926B2 (en) | 2012-06-13 |
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| JP2007149555A Expired - Fee Related JP4953926B2 (en) | 2007-06-05 | 2007-06-05 | Imaging apparatus and imaging method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5473977B2 (en) | 2011-04-14 | 2014-04-16 | キヤノン株式会社 | Imaging apparatus and camera system |
| JP5748826B2 (en) * | 2013-12-02 | 2015-07-15 | キヤノン株式会社 | Imaging apparatus and camera system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2000184290A (en) * | 1998-12-11 | 2000-06-30 | Matsushita Electric Ind Co Ltd | Solid-state image pickup device |
| JP4708821B2 (en) * | 2005-03-17 | 2011-06-22 | キヤノン株式会社 | Moving picture coding apparatus, control method therefor, computer program, and storage medium |
| JP4715366B2 (en) * | 2005-07-27 | 2011-07-06 | パナソニック電工株式会社 | Multiple image composition method and multiple image composition device |
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