JPH06350895A - Method for correcting jiggle in video camera - Google Patents

Method for correcting jiggle in video camera

Info

Publication number
JPH06350895A
JPH06350895A JP5138279A JP13827993A JPH06350895A JP H06350895 A JPH06350895 A JP H06350895A JP 5138279 A JP5138279 A JP 5138279A JP 13827993 A JP13827993 A JP 13827993A JP H06350895 A JPH06350895 A JP H06350895A
Authority
JP
Japan
Prior art keywords
camera
image
unit
motion vector
motion
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.)
Pending
Application number
JP5138279A
Other languages
Japanese (ja)
Inventor
Tadayuki Ichikawa
忠之 市川
Original Assignee
Fujitsu General Ltd
株式会社富士通ゼネラル
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujitsu General Ltd, 株式会社富士通ゼネラル filed Critical Fujitsu General Ltd
Priority to JP5138279A priority Critical patent/JPH06350895A/en
Publication of JPH06350895A publication Critical patent/JPH06350895A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To calculate the movement vector of a screen peripheral part so as to detect and correct jiggle. CONSTITUTION:A data pickup part 1 taking out image data at a prescribed position at every frame of respective images, a movement detecting part 2 detecting the movement vector of a part (the prescribed position) in a photographing screen, a movement storage part 3 storing the movement vector in order, an arithmetic part 4 obtaining the movement vector of a camera, a discriminating part 5 discriminating the kinds of the movement of the camera, that is, whether jiggle or panning, etc., an image storage part 6 which stores photographed image data of an area being larger than the display screen supplied from an image-picking-up part (abbrieviated) of CCD, etc., and reads image data of the designated area so as to output image data 8 jiggle-corrected after prescribed time elasps and a control part 7 controlling the respective parts, for example, controlling the reading of the image storage part 6 in accordance with the movement of the camera, etc.

Description

【発明の詳細な説明】Detailed Description of the Invention
【0001】[0001]
【産業上の利用分野】本発明は、手振れによる撮影画像
の劣化を抑えるビデオカメラの手振れ補正方法に関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera-shake correction method for a video camera, which suppresses deterioration of a captured image due to camera shake.
【0002】[0002]
【従来の技術】従来のビデオカメラの手振れ補正方法
は、撮影画像データを時間軸方向に所要の演算をするこ
とにより、カメラの動きベクトルを検出し、図4の
(イ)図に示すように左上向きのベクトル40で表現す
る手振れ(カメラの動き)が発生する場合、一旦記憶し
ているデータを、前記左上向きのベクトル40を打ち消
すようにカメラアングル41の右下部を中心に読み出し
て、表示画面(フレーム)42を出力する。また、
(ロ)図の右下向きのベクトル43で示す手振れが発生
する場合、前記右下向きのベクトル43を打ち消すよう
にカメラアングルの左上部を中心に表示画面(フレー
ム)を出力する。しかし、カメラの動きを判定する場
合、撮影画像の動きを誤検出しその誤りに基づき手振れ
補正したり、また、水平方向にパンニングを行った場
合、その動きに対し手振れ補正したりする誤りの補正が
起こっていた。例えば、パンニングの誤り補正では、カ
メラアングルの所定の移動量毎に、手振れ補正が動作
し、表示画面の動きがパンニングの動作と一致せず段階
的に移動する違和感のあるものとなるなど、画像が劣化
する問題があった。
2. Description of the Related Art A conventional camera-shake correction method for a video camera detects a motion vector of the camera by performing a necessary calculation on photographed image data in a time axis direction, and as shown in FIG. When a camera shake (camera movement) represented by the upper left vector 40 occurs, the stored data is read out centering on the lower right part of the camera angle 41 so as to cancel the upper left vector 40 and displayed. The screen (frame) 42 is output. Also,
(B) When the camera shake indicated by the lower right vector 43 in the figure occurs, the display screen (frame) is output centering on the upper left part of the camera angle so as to cancel the lower right vector 43. However, when determining the movement of the camera, the movement of the captured image is erroneously detected and the camera shake is corrected based on the error. When panning is performed in the horizontal direction, the camera shake is corrected for the movement. Was happening. For example, in the panning error correction, the camera shake correction is activated for each predetermined amount of movement of the camera angle, and the movement of the display screen does not match the panning movement, resulting in a sense of discomfort. There was a problem of deterioration.
【0003】[0003]
【発明が解決しようとする課題】本発明は上記問題点に
鑑みなされたもので、カメラの動きの種類を判定し、そ
れに基づき手振れ補正を行うビデオカメラの手振れ補正
方法を提供することを目的とする。
SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a camera shake correction method for a video camera, which determines the type of camera movement and performs camera shake correction based on the judgment. To do.
【0004】[0004]
【課題を解決するための手段】上記目的を達成するため
に、撮影画面(カメラアングル)の所定位置の画像デー
タを時間軸方向に取り出すデータ抽出部と、抽出された
相応する位置の画像データに所要の演算をし撮影画面上
の部分(各位置)の動きベクトルを検出する動き検出部
と、得られた各位置の動きベクトルを記憶する動き記憶
部と、前記記憶している動きベクトルに所要の演算を行
いカメラの動きを得る演算部と、前記カメラの動きに基
づきカメラの動きの種類を判定する判別部と、撮影画像
データを記憶するとともに前記カメラの動きの種類に応
じて表示画像データを読み出す画像記憶部と、前記画像
記憶部の制御をするとともに各部を制御する制御部とか
らなる。
In order to achieve the above object, a data extraction unit for extracting image data at a predetermined position of a photographing screen (camera angle) in a time axis direction, and an image data at a corresponding position extracted. A motion detection unit that performs a necessary calculation to detect a motion vector of a portion (each position) on a shooting screen, a motion storage unit that stores the obtained motion vector of each position, and a motion vector that is stored in the motion vector. And a determination unit that determines the type of camera movement based on the movement of the camera, store captured image data, and display image data according to the type of movement of the camera. And an image storage unit for reading out the data and a control unit for controlling the image storage unit and controlling each unit.
【0005】[0005]
【作用】以上のように構成したので、撮影画面(カメラ
アングル)の周縁部の各部の動きベクトルに多数決演算
をし、カメラの動きベクトルを得る。カメラの動きが所
定の時間内でほぼ一種類の動きベクトル、言い換える
と、各時刻の動きベクトル間に変化が無い(少ない)場
合は、判別部はカメラの動きの種類がパンニングである
と判定し、撮影画面(カメラアングル)の手振れ補正は
行わないかあるいは、前記カメラの動きベクトルの大き
さに応じ、画面周縁部に限定して手振れ補正する。カメ
ラの動きベクトルが所定の時間内で振動するような状態
の場合は、判別部はカメラの動きの種類が手振れである
と判定し、前記カメラの動きベクトルを打ち消す向きお
よび大きさに基づき手振れ補正を実施する。
With the above configuration, the motion vector of each part of the peripheral portion of the photographing screen (camera angle) is subjected to a majority calculation to obtain the motion vector of the camera. When the camera motion is almost one type of motion vector within a predetermined time, in other words, when there is no change (smallness) between the motion vectors at each time, the determination unit determines that the type of camera motion is panning. The camera shake correction of the shooting screen (camera angle) is not performed, or the camera shake correction is limited to the peripheral portion of the screen according to the magnitude of the motion vector of the camera. If the motion vector of the camera vibrates within a predetermined time, the determination unit determines that the type of camera motion is camera shake, and corrects the camera shake based on the direction and size of canceling the camera motion vector. Carry out.
【0006】[0006]
【実施例】以下、本発明によるビデオカメラの手振れ補
正方法について、図を用いて詳細に説明する。図1は、
本発明によるビデオカメラの手振れ補正方法の実施例ブ
ロック図である。1はCCDなど撮像部(省略)から供
給された表示画面より大きい領域の撮影画像データの所
定位置の画像データを各画像の各フレーム毎に取り出す
データ抽出部である。2は抽出された画像データを使い
時間軸方向に所要の演算を実施することにより、撮影画
面の部分(所定位置)の動きベクトルを検出する動き検
出部である。3は所定の時間内に得られる動きベクトル
を順番に記憶する動き記憶部である。4は相応するフレ
ームの各部分の動きベクトルを多数決演算し、カメラの
動きベクトルを得る演算部である。5は、前記カメラの
動きベクトルの時間方向の変化に基づきカメラの動き
が、手振れであるかパンニングであるかなど動きの種類
を判定する判別部である。6は、CCDなど撮像部(省
略)から供給された表示画面より大きい領域の撮影画像
データを記憶し所定の時間後に、指定された領域の画像
データを読み出し手振れ補正した画像データ8を出力す
る画像記憶部である。7は、前記カメラの動きに応じ
て、画像記憶部6の読み出しを制御するなど各部を制御
する制御部である。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for correcting camera shake of a video camera according to the present invention will be described in detail below with reference to the drawings. Figure 1
FIG. 3 is a block diagram of an embodiment of a video camera shake correction method according to the present invention. Reference numeral 1 denotes a data extraction unit that extracts image data at a predetermined position of captured image data in an area larger than the display screen supplied from an image pickup unit (omitted) such as a CCD for each frame of each image. Reference numeral 2 denotes a motion detection unit that detects a motion vector of a portion (predetermined position) of the shooting screen by performing a required calculation in the time axis direction using the extracted image data. Reference numeral 3 denotes a motion storage unit that sequentially stores motion vectors obtained within a predetermined time. Reference numeral 4 is a calculation unit that majority-calculates the motion vector of each part of the corresponding frame to obtain the motion vector of the camera. Reference numeral 5 denotes a determination unit that determines the type of motion, such as camera shake or panning, based on changes in the motion vector of the camera in the time direction. Reference numeral 6 is an image which stores photographed image data of an area larger than the display screen, which is supplied from an image pickup unit (omitted) such as CCD, and after a predetermined time, reads out image data of a designated area and outputs image data 8 after image stabilization. It is a storage unit. Reference numeral 7 denotes a control unit that controls each unit such as controlling reading of the image storage unit 6 according to the movement of the camera.
【0007】本発明によるビデオカメラの手振れ補正方
法の動作を説明する。図2は、本発明によるビデオカメ
ラの手振れ補正方法でカメラの動きベクトルを検出する
ための各部の動きベクトルを示す図である。A、B、
C、Dの画面の4隅は中央部Eと比べると、背景などが
撮影される位置であり、動きのある被写体は存在するこ
とが少ない。従って、A、B、C、D4隅位置のデータ
から生成した各々の動きベクトルはカメラの部分の動き
を表している。例えば、カメラの部分の動きベクトル2
0は右水平方向に向かう所定の大きさのベクトルであ
り、A、B、Dの各部分の動きベクトルは動きベクトル
20に等しいがC部分の動きベクトルは、右上方向に向
かう所定の大きさのベクトルである。また、この場合、
A、B、C、D各部分の動きベクトルの多数決演算によ
り、カメラの動きベクトルは部分の動きベクトル20と
決める。
The operation of the image stabilization method of the video camera according to the present invention will be described. FIG. 2 is a diagram showing the motion vector of each part for detecting the motion vector of the camera by the image stabilization method of the video camera according to the present invention. A, B,
Compared to the central portion E, the four corners of the screens C and D are positions where the background and the like are photographed, and there are few moving subjects. Therefore, each motion vector generated from the data of the four corner positions of A, B, C, and D represents the motion of the camera part. For example, the motion vector 2 of the camera part
0 is a vector having a predetermined magnitude in the right horizontal direction, and the motion vector of each of A, B, and D is equal to the motion vector 20, but the motion vector of the C portion has a predetermined magnitude in the upper right direction. Is a vector. Also in this case,
The motion vector of the camera is determined as the motion vector 20 of the part by the majority operation of the motion vectors of the parts A, B, C and D.
【0008】図3は、本発明によるビデオカメラの手振
れ補正方法でカメラの動きの種類を検出する原理図であ
る。所定の時間間隔でカメラの動きベクトル30を表示
すると、ほぼ一定のベクトルとなる(イ)図の状態は、
カメラのパンニングである。カメラの動きベクトル30
が大きさおよび方向を変える(ロ)図の状態は、カメラ
が振動していることであり、手振れと判定する。判別部
5で、手振れの検出をすると、カメラの動きベクトル3
0を打ち消すように、画像記憶部6の相応する出力デー
タを、例えば、動きベクトルの向きが左上方で大きさが
所定の大きさの場合、標準の出力画面の範囲に対し右下
方向に所定の移動量ずらせるように読み出す。また、カ
メラのパンニングの場合は、画像記憶部6の出力データ
を標準の出力画面の範囲そのまま出力する。尚、カメラ
アングルの中央部の映像が動きの激しい画像の場合は、
手振れ補正をA、B、C、D4隅位置を含む周縁部のみ
に実施するようにしても良い。
FIG. 3 is a principle diagram for detecting the type of camera movement in the image stabilization method of the video camera according to the present invention. When the motion vector 30 of the camera is displayed at a predetermined time interval, it becomes a substantially constant vector.
It is the panning of the camera. Camera motion vector 30
The state of (b) in which the size and the direction change is that the camera is vibrating, and it is determined to be camera shake. When the discrimination unit 5 detects camera shake, the camera motion vector 3
When the direction of the motion vector is the upper left and the size is a predetermined size, the corresponding output data of the image storage unit 6 is set to the lower right direction with respect to the range of the standard output screen so as to cancel 0. It is read so as to shift the movement amount of. In the case of camera panning, the output data of the image storage unit 6 is output as it is in the standard output screen range. If the image at the center of the camera angle is a moving image,
The camera shake correction may be performed only on the peripheral portion including the A, B, C, and D4 corner positions.
【0009】[0009]
【発明の効果】以上説明したように、本発明はカメラの
動きの種類を判定し、それに基づき手振れ補正を行うビ
デオカメラの手振れ補正方法を提供する。従って、手振
れによるカメラアングルのゆれを抑制するとともに、従
来の手振れ補正方法のビデオカメラに見られるパンニン
グ時のカメラアングル(表示画面)の異常運動を抑制
し、画質の向上が期待できる。
As described above, the present invention provides a camera-shake correction method for a video camera, which determines the type of camera movement and performs camera-shake correction based on the determination. Therefore, it is possible to prevent the camera angle from shaking due to camera shake, and to suppress the abnormal movement of the camera angle (display screen) during panning, which is seen in a video camera with a conventional camera shake correction method, and it is expected to improve the image quality.
【図面の簡単な説明】[Brief description of drawings]
【図1】本発明によるビデオカメラの手振れ補正方法の
実施例ブロック図である。
FIG. 1 is a block diagram of an embodiment of a video camera shake correction method according to the present invention.
【図2】本発明によるビデオカメラの手振れ補正方法で
カメラの動きベクトルを検出するための各部の動きベク
トルを示す図である。
FIG. 2 is a diagram showing a motion vector of each unit for detecting a motion vector of the camera by the image stabilization method of the video camera according to the present invention.
【図3】本発明によるビデオカメラの手振れ補正方法で
カメラの動きの種類を検出する原理図である。
FIG. 3 is a principle diagram for detecting the type of camera movement by the image stabilization method of the video camera according to the present invention.
【図4】手振れ補正における出力画像の生成方法を説明
する概念図である。
FIG. 4 is a conceptual diagram illustrating a method of generating an output image in camera shake correction.
【符号の説明】[Explanation of symbols]
1 データ抽出部 2 動き検出部 3 動き記憶部 4 演算部 5 判別部 6 画像記憶部 7 制御部 8 手振れ補正した画像データ 20 部分の動きベクトル 30 カメラの動きベクトル 40 左上向きのベクトル 41 カメラアングル 42 表示画面(フレーム) 43 右下向きのベクトル 1 Data Extraction Section 2 Motion Detection Section 3 Motion Storage Section 4 Calculation Section 5 Discrimination Section 6 Image Storage Section 7 Control Section 8 Shake-corrected Image Data 20 Motion Vector of Part 30 Camera Motion Vector 40 Upper Left Vector 41 Camera Angle 42 Display screen (frame) 43 Right downward vector

Claims (6)

    【特許請求の範囲】[Claims]
  1. 【請求項1】 撮影画面(カメラアングル)の所定位置
    の画像データを時間軸方向に取り出すデータ抽出部と、
    抽出された相応する位置の画像データに所要の演算をし
    撮影画面上の部分(各位置)の動きベクトルを検出する
    動き検出部と、得られた各位置の動きベクトルを記憶す
    る動き記憶部と、前記記憶している動きベクトルに所要
    の演算を行いカメラの動きを得る演算部と、前記カメラ
    の動きに基づきカメラの動きの種類を判定する判別部
    と、撮影画像データを記憶するとともに前記カメラの動
    きの種類に応じて表示画像データを読み出す画像記憶部
    と、前記画像記憶部の制御をするとともに各部を制御す
    る制御部とからなることを特徴とするビデオカメラの手
    振れ補正方法。
    1. A data extraction unit for extracting image data at a predetermined position of a photographing screen (camera angle) in a time axis direction,
    A motion detection unit that performs a necessary calculation on the extracted image data of the corresponding position to detect a motion vector of a portion (each position) on the photographing screen, and a motion storage unit that stores the obtained motion vector of each position. An operation unit for performing a required operation on the stored motion vector to obtain a camera motion, a determination unit for determining a type of the camera motion based on the camera motion, and a camera unit for storing captured image data The image stabilization method for a video camera, comprising: an image storage unit for reading out display image data according to the type of movement of the image storage unit; and a control unit for controlling the image storage unit and controlling each unit.
  2. 【請求項2】 撮影画面の周縁部の少なくとも4隅の位
    置から画像データを取り出すデータ抽出部でなる請求項
    1記載のビデオカメラの手振れ補正方法。
    2. The image stabilization method for a video camera according to claim 1, further comprising a data extraction unit that extracts image data from positions of at least four corners of the peripheral edge of the shooting screen.
  3. 【請求項3】 少なくとも表示画面の4隅の位置を含む
    周縁部画像データに対し、動きベクトルを補正する手振
    れ補正処理をする請求項1記載のビデオカメラの手振れ
    補正方法。
    3. The image stabilization method for a video camera according to claim 1, wherein the image stabilization processing for correcting the motion vector is performed on the peripheral edge image data including at least the four corner positions of the display screen.
  4. 【請求項4】 上記演算部が各位置の動きベクトルにつ
    いて多数決演算を実施し、カメラの動きを得る請求項1
    記載のビデオカメラの手振れ補正方法。
    4. The calculation unit obtains the motion of the camera by performing a majority calculation on the motion vector at each position.
    Image stabilization method for the described video camera.
  5. 【請求項5】 上記判別部がカメラの動きベクトルが振
    動することを判別し、手振れと判定する請求項1記載の
    ビデオカメラの手振れ補正方法。
    5. The image stabilization method for a video camera according to claim 1, wherein the determination unit determines that the motion vector of the camera is vibrating and determines that the image is a camera shake.
  6. 【請求項6】 上記判別部がカメラの動きベクトルが所
    定の変化量より小である場合、パンニング動作と判定す
    る請求項1記載のビデオカメラの手振れ補正方法。
    6. The image stabilization method for a video camera according to claim 1, wherein the discriminating unit determines a panning operation when the motion vector of the camera is smaller than a predetermined change amount.
JP5138279A 1993-06-10 1993-06-10 Method for correcting jiggle in video camera Pending JPH06350895A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5138279A JPH06350895A (en) 1993-06-10 1993-06-10 Method for correcting jiggle in video camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5138279A JPH06350895A (en) 1993-06-10 1993-06-10 Method for correcting jiggle in video camera

Publications (1)

Publication Number Publication Date
JPH06350895A true JPH06350895A (en) 1994-12-22

Family

ID=15218202

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
JP (1) JPH06350895A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
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JPH08331430A (en) * 1995-05-30 1996-12-13 Sony Corp Hand shake correcting device and video camera
WO2005101028A2 (en) 2004-04-06 2005-10-27 Symbol Technologies, Inc. System and method for monitoring a mobile computing product/arrangement
EP1998558A2 (en) 2007-05-18 2008-12-03 Casio Computer Co., Ltd. Image pickup apparatus equipped with function of detecting image shaking
US7961222B2 (en) 2007-03-20 2011-06-14 Panasonic Corporation Image capturing apparatus and image capturing method
JP2012160780A (en) * 2011-01-28 2012-08-23 Nikon Corp Imaging device, image processing device, and image processing program
JP2012199601A (en) * 2011-03-18 2012-10-18 Nikon Corp Image tracking device
CN108259709A (en) * 2018-01-19 2018-07-06 长沙全度影像科技有限公司 A kind of video image anti-fluttering method and system for the shooting of bullet time
CN111372000A (en) * 2020-03-17 2020-07-03 Oppo广东移动通信有限公司 Video anti-shake method and apparatus, electronic device, and computer-readable storage medium

Cited By (13)

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