JP2944130B2 - Video stabilization device - Google Patents
Video stabilization deviceInfo
- Publication number
- JP2944130B2 JP2944130B2 JP2058641A JP5864190A JP2944130B2 JP 2944130 B2 JP2944130 B2 JP 2944130B2 JP 2058641 A JP2058641 A JP 2058641A JP 5864190 A JP5864190 A JP 5864190A JP 2944130 B2 JP2944130 B2 JP 2944130B2
- Authority
- JP
- Japan
- Prior art keywords
- area
- comparison
- correlation
- comparison area
- video information
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
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- Picture Signal Circuits (AREA)
Description
【発明の詳細な説明】 （イ） 産業上の利用分野 本発明は、カメラの手ブレ等を防止する動画のブレ補
正装置に関する。The present invention relates to a moving image blur correction device that prevents camera shake and the like.
（ロ） 従来の技術 特開平１−109970号公報（H04N5/217）には、特定の
基準エリアを設定してそのエリア内の映像情報を記憶
し、一定時間後の映像に於て基準エリア近傍で比較エリ
アを変更し乍ら基準エリアと比較エリア各映像情報の相
関を求めて、最も相関の高い比較エリアの位置情報に基
づいて映像信号を形成する手ブレ防止の技術が開示され
ている。(B) Conventional technology Japanese Patent Laid-Open No. 1-109970 (H04N5 / 217) discloses a method of setting a specific reference area, storing video information in the area, and storing the video information in the vicinity of the reference area in a video after a predetermined time. A technique for preventing camera shake is disclosed in which the correlation between the reference area and each piece of video information in the comparison area is obtained while changing the comparison area, and a video signal is formed based on the position information of the comparison area having the highest correlation.
（ハ） 発明が解決しようとする課題 しかし、上述する従来技術は基準エリアが単一であ
り、基準エリアに動画が入り込むと動画の移動方向に映
像が追従する虞があり、誤動作発生の原因となる。(C) Problems to be Solved by the Invention However, the above-described conventional technology has a single reference area, and when a moving image enters the reference area, the image may follow the moving direction of the moving image. Become.
（ニ） 課題を解決するための手段 そこで、本発明は、基準エリアを複数ヶ所に設け、各
基準エリア毎に相関の最も高い比較エリアの位置を検出
し、検出された位置に於ける各比較エリアの内最も相関
の高い比較エリアとそれに対応する基準エリアの位置情
報に基づいて撮像手段の映像検出エリアを変更すること
を特徴とする。(D) Means for Solving the Problems Accordingly, the present invention provides a plurality of reference areas, detects the position of the comparison area having the highest correlation for each reference area, and performs each comparison at the detected position. The image detection area of the imaging means is changed based on the position information of the comparison area having the highest correlation among the areas and the corresponding reference area.
（ホ） 作用 従って、本発明によれば、複数の基準エリアの内、動
画の存在しない基準エリアが１ケ所でも存在すれば、そ
のエリアで検出されるブレ量に従って映像検出エリアの
補正が為される。(E) Operation Therefore, according to the present invention, if at least one of the plurality of reference areas has no moving image, the image detection area is corrected in accordance with the amount of blur detected in that area. You.
（ヘ） 実施例 以下、本発明を図示する１実施例に従い説明する。(F) Example Hereinafter, the present invention will be described according to one example illustrated.
本実施例は、第１図の動作原理説明図に示す様に、ま
ず、基準タイミングの画像Ａの右上と左下にそれぞれ設
定した第１基準エリアR1と第２基準エリアR2の２ケ所に
於ける映像情報を所定間隔で記憶する。In the present embodiment, as shown in FIG. 1 for explaining the principle of operation, first, there are a first reference area R1 and a second reference area R2 set at the upper right and lower left of the image A at the reference timing, respectively. The video information is stored at predetermined intervals.
次に一定期間後の画像Ｂに於て、各基準エリアR1′・
R2′を含む第１サンプリングエリアS1と第２サンプリン
グエリアS2の２ケ所に於ける映像情報を所定間隔で記憶
する。Next, in image B after a certain period, each reference area R1 '
Video information at two locations, that is, a first sampling area S1 including R2 'and a second sampling area S2 is stored at predetermined intervals.
その後、各サンプリングエリア内で基準エリアと大き
さの等しい比較エリアを定め、この第１・第２の比較エ
リアC1・C2の映像情報と、第１・第２基準エリアR1・R2
の各映像情報との相関を求める。Thereafter, a comparison area having the same size as the reference area is determined in each sampling area, and the video information of the first and second comparison areas C1 and C2 and the first and second reference areas R1 and R2 are compared.
Of each video information is obtained.
相関値は、サンプリングエリア内で比較エリアを変更
する度に求め、最も高い相関値に対応する比較エリアの
位置を、サンプリングエリア毎に求める。The correlation value is obtained every time the comparison area is changed in the sampling area, and the position of the comparison area corresponding to the highest correlation value is obtained for each sampling area.
各サンプリングエリア毎の最高相関値を比較し大きい
値の側の比較エリアの位置を画像のブレ方向と定めて、
カメラの指向方向を自動補正する。Compare the highest correlation value for each sampling area, determine the position of the comparison area on the side of the larger value as the image blur direction,
Automatically correct the direction of the camera.
以上の動作を具体的に実行するため、第２図に図示す
る本実施例回路では、映像信号をAD変換回路１に於て、
常にディジタル化している。ディジタル化したデータ
は、第１相関検出手段D1と第２相関検出手段D2に入力さ
れる。前記第１相関検出手段D1は、左上の基準エリアR1
に対する相関を検出するものであり、前記第２相関検出
手段D2は、右下の基準エリアR2に対する相関を検出する
ものであり、両相関検出手段の内部回路は、共通であ
る。In order to specifically execute the above operation, in the circuit of the present embodiment shown in FIG.
It is always digitized. The digitized data is input to the first correlation detecting means D1 and the second correlation detecting means D2. The first correlation detecting means D1 is provided in the upper left reference area R1.
The second correlation detecting means D2 detects the correlation with respect to the lower right reference area R2, and the internal circuits of both correlation detecting means are common.
そこで、以下に前記第１相関検出手段D1の動作に付い
て説明する。Therefore, the operation of the first correlation detecting means D1 will be described below.
まず、第１メモリ２に、第１基準エリアR1の映像情報
（AD変換値）を記憶する。First, the video information (AD conversion value) of the first reference area R1 is stored in the first memory 2.
次に、一定期間後に基準エリア近傍のサンプリングエ
リアS1の映像情報を、第２メモリ６に記憶する。Next, after a certain period of time, the video information of the sampling area S1 near the reference area is stored in the second memory 6.
比較エリア選択回路８は、比較エリアの位置情報を発
生する。The comparison area selection circuit 8 generates position information of the comparison area.
この位置情報を入力する第２メモリ制御回路７は、位
置情報に対応する比較エリアの映像情報を順次読み出
す。The second memory control circuit 7 that inputs the position information sequentially reads out the video information of the comparison area corresponding to the position information.
一方、第１メモリ制御回路３も第２メモリ制御回路３
の読み出しに連動して前記第１メモリ２に記憶した映像
情報を順次読み出す。On the other hand, the first memory control circuit 3
The video information stored in the first memory 2 is sequentially read out in conjunction with the reading of the video data.
前記比較回路４は、両メモリより読み出された映像情
報を、順次比較してその差の絶対値を次段の積算回路５
で積算する。The comparison circuit 4 sequentially compares the video information read out from both memories, and calculates the absolute value of the difference,
Multiply by.
エリア内の比較が完了すると、その積算値と位置情報
がデータラッチ回路９にラッチされる。When the comparison in the area is completed, the integrated value and the position information are latched by the data latch circuit 9.
このデータラッチは、比較エリアと基準エリアの映像
情報の相関が演算される度に為される。This data latch is performed every time the correlation between the video information in the comparison area and the video information in the reference area is calculated.
ラッチされた積算値とデータ記憶手段11に記憶されて
いる最小積算値は、転送制御回路12に於て比較され、ラ
ッチされた積算値が小さい場合にのみ転送ゲート10を介
して、ラッチデータをデータ記憶回路11に記憶せしめ
る。The latched integrated value and the minimum integrated value stored in the data storage means 11 are compared in the transfer control circuit 12, and the latched data is transferred through the transfer gate 10 only when the latched integrated value is small. The data is stored in the data storage circuit 11.
この転送制御動作を、比較エリアが変更される度に実
行し、前記データ記憶回路11い内に最小積算値とそれに
対応する位置情報を記憶する。This transfer control operation is executed every time the comparison area is changed, and the minimum integrated value and the corresponding position information are stored in the data storage circuit 11.
前述する第１相関検出手段D1の動作は、第２相関検出
手段D2に付いても同様に実行され、第２基準エリアと最
も相関の高い比較エリアの一情報と積算値がデータ記憶
回路11に記憶される。The above-described operation of the first correlation detecting means D1 is similarly executed for the second correlation detecting means D2, and information of the comparison area having the highest correlation with the second reference area and the integrated value are stored in the data storage circuit 11. It is memorized.
相関比較回路13は、両データ記憶回路の最小積算値を
比較し、小さい方の最小積算値側即ち相関性の高い側の
位置データをより正しい位置データと見做し、位置デー
タ選択回路１よりその位置データを指向方向制御手段15
に供給する。この指向方向制御手段15は、バイモルフで
撮像素子を移動方向に電気機械的に変位せしめる。The correlation comparison circuit 13 compares the minimum integrated values of the two data storage circuits, and regards the position data on the smaller minimum integrated value side, that is, the position data with the higher correlation, as more accurate position data. The position data is stored in the pointing direction control means 15.
To supply. The directional control means 15 causes the bimorph to electromechanically displace the image sensor in the moving direction.
上述実施例は、２位置で相関性を検出しているが、２
位置に限らず出来得る限り多くの位置で相関性を検出し
て適切な位置情報を選択する様に構成すればよいことは
云うまでもない。In the above embodiment, the correlation is detected at two positions.
It goes without saying that the correlation may be detected at as many positions as possible and the appropriate position information may be selected.
（ト） 発明の効果 よって、本発明によればより適格な位置データにより
手ブレ補正が為され、その効果は大である。(G) Effects of the Invention Therefore, according to the present invention, camera shake correction is performed using more appropriate position data, and the effect is significant.
第１図は本発明の一実施例の動作原理説明図、第２図は
その回路ブロック図を、それぞれ示す。 K1……第１基準エリア K2……第２基準エリア C1……第１比較エリア C2……第２比較エリアFIG. 1 is an explanatory view of the operation principle of an embodiment of the present invention, and FIG. 2 is a circuit block diagram thereof. K1 ... First reference area K2 ... Second reference area C1 ... First comparison area C2 ... Second comparison area
Claims (1)
て所定の基準エリアに於ける映像情報を記憶する第１の
記憶手段と、所定期間後に前記撮像手段にて検出される
第２の映像について前記基準エリアを含むサンプリング
エリアに於ける映像情報を記憶する第２の記憶手段と、
前記サンプリングエリアに於いて比較エリアの位置を設
定する比較エリア選択手段と、該比較エリア選択手段に
より設定される比較エリアの位置を変更し乍ら各比較エ
リアに於ける映像情報と前記第１の記憶手段に記憶され
た映像情報との相関を求め、最も相関が高い比較エリア
の位置を検出する相関演算手段と、該相関演算手段によ
り検出された比較エリアとそれに対応する前記基準エリ
アの位置情報に基づいて前記撮像手段の映像検出エリア
を変更する指向方向制御手段とを備え、 前記基準エリアを複数ヶ所に設け、前記相関演算手段
が、前記各基準エリア毎に相関の最も高い比較エリアの
位置を検出し、検出された位置に於ける各比較エリアの
内最も相関の高い比較エリアを検出することを特徴とす
る動画のブレ補正装置。A first storage unit for storing image information in a predetermined reference area for a first image detected by the imaging unit; a second storage unit detecting the image information after a predetermined period; Second storage means for storing video information in a sampling area including the reference area for video,
Comparison area selection means for setting the position of the comparison area in the sampling area; and changing the position of the comparison area set by the comparison area selection means while changing the video information in each comparison area and the first area. Correlation calculating means for obtaining a correlation with the video information stored in the storage means and detecting the position of the comparison area having the highest correlation; and the comparison area detected by the correlation calculating means and the position information of the reference area corresponding thereto. Directional control means for changing the image detection area of the imaging means based on the reference area, the reference area is provided at a plurality of locations, the correlation calculating means, the position of the comparison area having the highest correlation for each of the reference areas A moving image blur correction device for detecting a comparison area having the highest correlation among the comparison areas at the detected position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2058641A JP2944130B2 (en) | 1990-03-09 | 1990-03-09 | Video stabilization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2058641A JP2944130B2 (en) | 1990-03-09 | 1990-03-09 | Video stabilization device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03259672A JPH03259672A (en) | 1991-11-19 |
| JP2944130B2 true JP2944130B2 (en) | 1999-08-30 |
Family
ID=13090208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2058641A Expired - Lifetime JP2944130B2 (en) | 1990-03-09 | 1990-03-09 | Video stabilization device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2944130B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4704630B2 (en) * | 2001-09-14 | 2011-06-15 | アロカ株式会社 | Ultrasonic panoramic image forming device |
-
1990
- 1990-03-09 JP JP2058641A patent/JP2944130B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03259672A (en) | 1991-11-19 |
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