JP2615693B2 - Shake correction imaging device - Google Patents

Shake correction imaging device

Info

Publication number
JP2615693B2
JP2615693B2 JP28242587A JP28242587A JP2615693B2 JP 2615693 B2 JP2615693 B2 JP 2615693B2 JP 28242587 A JP28242587 A JP 28242587A JP 28242587 A JP28242587 A JP 28242587A JP 2615693 B2 JP2615693 B2 JP 2615693B2
Authority
JP
Japan
Prior art keywords
signal
image
memory
motion
amount
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 - Fee Related
Application number
JP28242587A
Other languages
Japanese (ja)
Other versions
JPH01125064A (en
Inventor
森村  淳
好徳 北村
謙也 魚森
隆 坂口
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP28242587A priority Critical patent/JP2615693B2/en
Publication of JPH01125064A publication Critical patent/JPH01125064A/en
Application granted granted Critical
Publication of JP2615693B2 publication Critical patent/JP2615693B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Transforming Light Signals Into Electric Signals (AREA)
  • Color Television Image Signal Generators (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Picture Signal Circuits (AREA)

Description

【発明の詳細な説明】 産業上の利用分野 本発明は小型化の進むカメラ特に手に持って撮像する
ような小型,軽量のビデオカメラなど撮像装置におい
て、画面ゆれ補正機能を備えたゆれ補正撮像装置に関す
るものである。
Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image pickup apparatus such as a small-sized and lightweight video camera, such as a small-sized and light-weight video camera, which is provided with a screen shake correction function. It concerns the device.

従来の技術 従来の画面ゆれ補正のための技術は、例えばテレビジ
ョン学会技術報告VoL.11No.3(1987年5月)p43〜p48
「画面ゆれ補正装置について」に示されている。第7図
はこの従来の画面ゆれ補正装置の構成を示すブロック図
である。第7図において、101はアナログ−ディジタル
変換器(以下A/D変換器と称す)、102は入力信号を書込
み、読出すメモリ、103は入力信号のゆれの方向と大き
さを検出する動き量検出回路、104はメモリ102を制御す
るためのメモリ読出制御回路である。
2. Description of the Related Art Conventional techniques for correcting screen shake are described, for example, in the Technical Report of the Institute of Television Engineers of Japan, Vol. 11 No. 3 (May 1987), p43-p48.
This is shown in “About the screen shake correction device”. FIG. 7 is a block diagram showing the configuration of this conventional screen shake correction device. 7, reference numeral 101 denotes an analog-to-digital converter (hereinafter, referred to as an A / D converter); 102, a memory for writing and reading an input signal; and 103, a motion amount for detecting the direction and magnitude of the fluctuation of the input signal. A detection circuit 104 is a memory read control circuit for controlling the memory 102.

入力された画像信号は、一定のサンプリング周波数で
サンプリングされ、ディジタル信号に変換されてメモリ
102に入力される。また、動き量検出回路103はディジタ
ル信号に変換された画像信号のうち第8図に示すよう
に、一定周期で代表点R11R12…を定め、それぞれの代表
点ごとに次のフィールドまたは次フレームの周囲の信号
Sijとの差を求める。差を求める領域は代表点の周囲水
平方向±32点、垂直方向±8点とし、代表点Rijと水平
方向x,垂直方向yの位置関係にある信号Si+x,j+y
の差の絶対値を とする。この差を各代表点について同じ位置関係にある
xyについて加算してDxyとする。
The input image signal is sampled at a fixed sampling frequency, converted to a digital signal, and stored in a memory.
Entered in 102. Further, the motion amount detection circuit 103 determines representative points R 11 R 12 ... At a constant period from the image signal converted into the digital signal, as shown in FIG. Signal around frame
Find the difference from S ij . The area for obtaining the difference is ± 32 points in the horizontal direction and ± 8 points in the vertical direction around the representative point, and the signal S i + x, j + y which has a positional relationship with the representative point R ij in the horizontal direction x and the vertical direction y.
The absolute value of the difference And This difference has the same positional relationship for each representative point
Dxy is added by adding xy .

そしてこのDxyの中での最小値のxとyを水平方向及
び垂直方向の動き量とする。このようにして動き量検出
回路103により求めた動き量をもとにして、メモリ読出
制御回路104では基準点を動き量により移動させて読出
す。
And x and y minimum value among the D xy in the horizontal direction and the vertical direction of the motion amount. Based on the motion amount obtained by the motion amount detection circuit 103 in this manner, the memory read control circuit 104 reads out the reference point by moving the reference point according to the motion amount.

第9図にこの基準点移動の様子を示す。Wで示す領域
は入力信号をメモリに書込む領域でありこれは常に一定
である。R0で示す領域は動き量が零の場合のメモリから
の読出しの領域であり、Rxyで示す領域は動き量が水平
x点,垂直y点のときのメモリからの読出し領域であ
る。このようにしてメモリ102から読出した信号は画像
のゆれが補正され、見やすい画像となることが可能にな
る。このようなゆれ補正の方法を代表的マッチング法と
称す。
FIG. 9 shows how this reference point moves. An area indicated by W is an area where an input signal is written into a memory, and is always constant. The area indicated by R 0 is an area read from the memory when the motion amount is zero, and the area indicated by R xy is an area read from the memory when the motion amount is the horizontal x point and the vertical y point. In this manner, the signal read out from the memory 102 is corrected for image shaking, thereby making it possible to obtain an easy-to-view image. Such a shake correction method is referred to as a representative matching method.

発明が解決しようとする問題点 しかしながら上記のような構成では、補正後の信号は
常に入力された信号の一部の領域の信号しか出力されな
いため、常に情報量が低下して解像度が低い信号とな
る。またゆれが大きくなると読出領域が大きく動くため
に、書込み領域を越えて補正を行うことは不可能である
ことから、読出領域を書込み領域に比べて小さく設定す
る。しかしながらこのようにして大きなゆれを補正可能
にした場合には、さらに出力される情報量が低下し解像
度がさらに低下するという問題点を有していた。
Problems to be Solved by the Invention However, in the above-described configuration, since the corrected signal is always output only in a part of the input signal, the signal amount is always reduced and the resolution is low. Become. Further, if the fluctuation increases, the read area moves greatly, and it is impossible to perform correction beyond the write area. Therefore, the read area is set smaller than the write area. However, when large fluctuations can be corrected in this way, there is a problem that the amount of information to be output further decreases and the resolution further decreases.

本発明はかかる点に鑑み、ゆれの大きな場合には読出
領域を小さくして補正に十分に行い、ゆれの小さな場合
には読出領域を大きくして情報量の低下を少なくし、解
像度の高い信号を出力できるゆれ補正撮像装置を提供す
ることを目的とする。
In view of the above, the present invention reduces the readout area to perform sufficient correction when the fluctuation is large, and reduces the information amount by increasing the readout area when the fluctuation is small. It is an object of the present invention to provide a shake-correction imaging device capable of outputting an image.

問題点を解決するための手段 上記目的を達成するために本発明のゆれ補正撮像装置
は、光学像を電気信号に変換する撮像素子と、前記撮像
素子の出力撮像信号を書込み読出可能なメモリと、前記
撮像信号のゆれを検出する動き量検出回路と、前記動き
量検出回路により検出された動き量に応じて前記メモリ
の読出し信号に含まれる前記撮像信号のゆれ成分を低減
するための制御信号を合成する動き制御回路と、前記動
き量が小さいとき読出し範囲を大きくし、前記動き量が
大きくなるにつれて読出し範囲が小さくなるよう前記メ
モリに記憶された撮像信号から読出す範囲を制御し同時
にレンズのズーム倍率比を制御して前記読出し範囲が小
さいときレンズのズーム倍率比を小さくし前記読出し範
囲が大きいときレンズのズーム倍率比を大きくする切出
サイズ制御部と、前記メモリから読出された信号を信号
の読出し範囲に応じて補間する補間回路を備えた構成で
ある。
Means for Solving the Problems In order to achieve the above object, a shake correction imaging apparatus according to the present invention includes an image sensor that converts an optical image into an electric signal, a memory that can write and read an output image signal of the image sensor, and A motion amount detection circuit for detecting the fluctuation of the imaging signal, and a control signal for reducing a fluctuation component of the imaging signal included in the readout signal of the memory according to the motion amount detected by the motion amount detection circuit. A motion control circuit for synthesizing the lens, and controlling the range read from the image signal stored in the memory so that the read range is increased when the amount of motion is small, and the read range is reduced as the amount of motion increases. The zoom magnification ratio of the lens is controlled to reduce the zoom magnification ratio of the lens when the readout range is small, and to increase the zoom magnification ratio of the lens when the readout range is large. And an interpolation circuit for interpolating the signal read from the memory in accordance with the signal reading range.

作用 前記した構成により、撮像信号中のゆれを動き量とし
て検出し、動き量の大小に応じてメモリの読出領域を制
御し、さらにメモリから読み出した信号を読出領域に応
じて補間することにより、画質の劣化を最少限におさ
え、ゆれに対する十分な補正を行えるとともに、ゆれの
少ない状態においては高画質の画像を得られるゆれ補正
撮像装置が実現できる。
Operation With the above-described configuration, by detecting the fluctuation in the image signal as the amount of motion, controlling the read area of the memory according to the magnitude of the amount of motion, and further interpolating the signal read from the memory according to the read area, It is possible to realize a shake-corrected imaging apparatus capable of performing a sufficient correction for the shake while minimizing the deterioration of the image quality and obtaining a high-quality image in a state where the shake is small.

実 施 例 以下、本発明の一実施例のゆれ補正撮像装置について
図面を参照しながら説明する。第1図は本発明の前提と
なる基本構成のゆれ補正撮像装置のブロック図を示すも
のである。第1図において、10は光学像を電気信号に変
換する撮像素子、11はA/D変換器、12は画像信号を書込
み,読出すメモリ、13は2つ以上の隣接する画素の画像
信号から1つの画像信号を補間する補間回路、14は画像
信号のゆれを求める動き量検出回路、15は撮像素子10の
駆動パルス及び装置の回路動作の基準となるクロックを
作る駆動回路、16はメモリ12の書込み及び読出を制御す
るメモリ制御回路、50は動き量検出回路14により検出さ
れた動き量により補正画像の切出サイズを求める切出サ
イズ制御回路、17は動き量と切出サイズにより補正画像
の領域を求める動き制御回路、21はD/A変換器である。
Embodiment Hereinafter, a shake correction imaging apparatus according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of a shake correction imaging apparatus having a basic configuration which is a premise of the present invention. In FIG. 1, reference numeral 10 denotes an image sensor which converts an optical image into an electric signal, 11 denotes an A / D converter, 12 denotes a memory for writing and reading image signals, and 13 denotes an image signal of two or more adjacent pixels. An interpolation circuit for interpolating one image signal, 14 is a motion amount detection circuit for determining the fluctuation of the image signal, 15 is a drive circuit for generating a drive pulse of the image sensor 10 and a clock which is a reference for circuit operation of the device, and 16 is a memory 12 A memory control circuit for controlling writing and reading of data; 50, a cut-out size control circuit for obtaining a cut-out size of the corrected image based on the amount of motion detected by the motion amount detecting circuit 14; 17; a corrected image based on the amount of motion and the cut-out size; A motion control circuit 21 for obtaining the area of is a D / A converter.

以上のように構成されたゆれ補正撮像装置について以
下その動作を説明する。撮像素子10からの撮像信号をA/
D変換器11でディジタルの信号に変換し、1フィールド
分の信号をメモリ12に書込む。撮像信号はメモリ12と同
時に動き量検出回路14に入力され、従来例に示した代表
点マッチング方法により動き量を求める。本実施例の場
合、ディジタル信号に変換された撮像信号は、それぞれ
撮像素子10の一つ一つの画素の信号に対応しているた
め、各信号間での演算は撮像素子10の各画素間の演算と
なる。動き量検出は代表点を定め、代表点とその周囲の
各画素間の差の絶対値を求め、代表点と各画素の相対位
置関係が同じものをすべての代表点で加算し、加算合計
でそのレベルの一番小さいものの相対位置関係を動き量
とする。この動き量よりメモリ12に書込んだ画像信号の
うちのどれだけの範囲で出力するかの画像切出サイズを
切出サイズ制御部50で決定する。一画面の水平方向の大
きさを基準とし、この大きさを100%として動き量の最
大値と画像切出サイズの関係を第2図に示す。動き量が
0のとき画像の切出サイズを90%とし、動き量が40%の
とき画像の切出サイズを50%とする。動き量が40%以上
のときは切出サイズは50%に固定される。また動き量の
時間変動に対しては第4図に示すようにピークホールド
回路を含むようなLPFの特性を切出サイズ演算回路にも
たせる。以上の画像切出サイズを切出サイズ演算回路18
で行う。
The operation of the shake correction imaging apparatus configured as described above will be described below. The imaging signal from the imaging device 10 is A /
The signal is converted into a digital signal by the D converter 11, and a signal for one field is written in the memory 12. The imaging signal is input to the motion amount detection circuit 14 at the same time as the memory 12, and the motion amount is obtained by the representative point matching method shown in the conventional example. In the case of the present embodiment, since the imaging signal converted into the digital signal corresponds to the signal of each pixel of the imaging element 10, the operation between the signals is performed between the pixels of the imaging element 10. Calculation. For motion amount detection, a representative point is determined, the absolute value of the difference between the representative point and each of its surrounding pixels is determined, and the relative position relationship between the representative point and each pixel is added at all the representative points, and the sum is added. The relative positional relationship of the smallest level is defined as the amount of movement. The cutout size control unit 50 determines the image cutout size of the range of the image signal written in the memory 12 based on the motion amount. FIG. 2 shows the relationship between the maximum value of the amount of motion and the image cutout size with the horizontal size of one screen as a reference and this size is taken as 100%. When the motion amount is 0, the cutout size of the image is 90%, and when the motion amount is 40%, the cutout size of the image is 50%. When the movement amount is 40% or more, the cutout size is fixed at 50%. In addition, as shown in FIG. 4, the cutout size calculation circuit is provided with the LPF characteristic including a peak hold circuit with respect to the time variation of the motion amount. The above image cutout size is calculated by the cutout size calculation circuit 18.
Do with.

切出サイズを決定後、この切出サイズで出力画像の走
査幅をもとの大きさに変換するための通常の1画素の出
力期間に何画素分出力するかを走査量演算回路19で求め
る。走査量はたとえば画像切出サイズが50%のとき0.5
画素になる。この走査量と、撮像素子駆動の走査パルス
より切出サイズ内の走査位置を走査位置演算回路20によ
り求める。切出サイズをn、撮像素子上での走査位置を
Px,Pyとすると切出サイズ内での走査位置Ix,Iyは次式で
求められる。
After the cutout size is determined, the scan amount calculation circuit 19 determines how many pixels to output during the normal one pixel output period for converting the scan width of the output image to the original size with the cutout size. . The scanning amount is, for example, 0.5 when the image cutout size is 50%
Pixel. The scan position and the scan position within the cutout size are obtained by the scan position calculation circuit 20 from the scan pulse for driving the image sensor. The cutout size is n, and the scanning position on the image sensor is
Assuming P x and P y , the scanning positions I x and I y within the cutout size can be obtained by the following equations.

Ix=n・Px+(1−n) Iy=n・Py+(1−n) 以上のように動き量から切出サイズ内の走査位置Ix,I
yを切出サイズ制御部5で求める。次にこの動き量と切
出サイズ内の走査位置Ix,Iyから、メモリ12の読出アド
レスを動き制御回路17で求める。動き量をMx,Myとし、
有効期間の画素数をT2x,T2yとすると、メモリ12の読出
アドレスRx,Ryは次式の通りである。
I x = n · P x + (1-n) I y = n · P y + (1-n) As described above, the scanning positions I x and I within the cutout size from the motion amount.
y is obtained by the cutout size control unit 5. Next, the read address of the memory 12 is obtained by the motion control circuit 17 from the motion amount and the scanning positions I x and I y within the cutout size. The amount of movement M x, and M y,
Assuming that the number of pixels in the valid period is T 2x and T 2y , the read addresses R x and R y of the memory 12 are as follows.

以上の様にしてメモリ12の読出アドレスを動き制御回
路17で合成する。第3図にメモリの書込アドレスの領域
と読出アドレスの領域及び動き量の関係の概要をメモリ
書込アドレスの領域を基準として示す。
As described above, the read address of the memory 12 is synthesized by the motion control circuit 17. FIG. 3 shows an outline of the relationship between the write address area, the read address area, and the movement amount of the memory with reference to the memory write address area.

以上のようにしてメモリ12より読出した信号は補間回
路13により補間して一つの信号として出力する。たとえ
ば 画素数 Ex=510,Ey=490 切出サイズ n=0.8 走査点 Px=6,Py=3 動き量 Mx=−41,My=−43 のときのメモリ読出アドレスRx,RyはRx=15.3,Ry=8.9
と求まる。このとき水平方向ではRxはRx=15とRx=16の
アドレスの信号を読出し0.7:0.3の重みで加算しRx=15.
3の信号とする、RyはRy=8とRy=9のアドレスの信号
を読出し0.1と0.9の重みで加算しRy=8.9の信号として
補間する。補間は水平方向と垂直方向2種類の補間があ
るがどちらの方向から行っても良い。
The signal read from the memory 12 as described above is interpolated by the interpolation circuit 13 and output as one signal. For example the number of pixels E x = 510, E y = 490 clipping size n = 0.8 scanning points P x = 6, P y = 3 motion amount M x = -41, memory read addresses when the M y = -43 R x , Ry is Rx = 15.3, Ry = 8.9
Is obtained. At this time it reads out the R x signal address R x = 15 and R x = 16 in the horizontal direction 0.7: adding the weight of 0.3 R x = 15.
A third signal, R y is interpolated as a signal of R y = 8.9 by adding the weight of the 0.9 R y = 8 and R y = 9 reads 0.1 signal address. There are two types of interpolation, a horizontal direction and a vertical direction, but the interpolation may be performed from either direction.

以下に示す例では垂直方向の補間を先に行う。今数値
Aの仕上げを 切り捨てを として示す。まずRxを切すてたときの垂直方向の補間値 同様にRxを切上げたときの垂直方向の補間値Sc(Rx,R
y)は Sc(Rx,Ry) =(Ry−Ry)・S(Rx,Ry)+(Ry−Ry)S(Rx,Ry) 次に垂直方向補間した値を用いて水平方向の補間を行
う。最終の補間値 以上の3つの式よりRx,Ryそれぞれ切上げ,切すての
組合せの4点の信号値より補間値を計算する。Rx=15.
3,Ry=8.9の例を第5図に示す。
In the example shown below, vertical interpolation is performed first. Now the finishing of numerical value A Truncation As shown. First, the vertical interpolation value when R x is cut off Similarly interpolation values in the vertical direction when rounding up the R x S c (R x, R
y ) is Sc ( Rx , Ry ) = ( Ry- Ry ) .S ( Rx , Ry ) + ( Ry- Ry ) S ( Rx , Ry ) Then vertical interpolation Interpolation in the horizontal direction is performed using the set values. Final interpolated value From the above three equations, the interpolation value is calculated from the signal values of the four points of the combination of R x and R y rounded up and down. R x = 15.
FIG. 5 shows an example where 3, R y = 8.9.

補間値は次式のようになる。The interpolation value is as follows.

Sc(15.3,8.9)=0.7×S(15,8.9)+0.3S(16,8.9) =0.7〔0.1×S(15,8)+0.9×S(15,9)〕 +0.3〔0.1×S(16,8)+0.9×S(16,9)〕 以上の動作を補間回路13により行う。そしてこの信号
をD/A変換器21によりアナログに変換し出力する。また
メモリ制御回路16はメモリ12への画素信号の書込を行う
とともに動き制御回路17からの読出し信号による読出を
行う動作をする。
S c (15.3,8.9) = 0.7 × S (15,8.9) + 0.3S (16,8.9) = 0.7 [0.1 × S (15,8) + 0.9 × S (15,9)] + 0.3 [ 0.1 × S (16,8) + 0.9 × S (16,9)] The above operation is performed by the interpolation circuit 13. This signal is converted into an analog signal by the D / A converter 21 and output. Further, the memory control circuit 16 performs an operation of writing a pixel signal to the memory 12 and performing reading by a read signal from the motion control circuit 17.

以上のように上記構成によれば、画像信号に含まれる
ゆれ量(動き量)を検出しこの動き量より画像の切出サ
イズを変化させるとともに補間方法を制御して、ゆれ量
が大きくなった場合においても十分なゆれ補正を行うと
ともに、ゆれ量が少なくなった場合には画像を切出サイ
ズを大きくして解像度の低下を最少限におさえることが
出来、十分なゆれ補正と高画質を両立させることが可能
となる。
As described above, according to the above configuration, the amount of motion (the amount of motion) included in the image signal is detected, the cutout size of the image is changed based on the amount of motion, and the interpolation method is controlled to increase the amount of the motion. In this case, sufficient shake correction is performed, and when the amount of shake is reduced, the image is cut out to a larger size to minimize the reduction in resolution, thus achieving both sufficient shake correction and high image quality. It is possible to do.

第6図は本発明の一実施例のゆれ補正撮像装置のブロ
ック図である。第1図の構成と異なるのは22のズームレ
ンズであり、他の10〜21までの符号で示す構成要素は第
1図と同じであり同符号を付してその詳細な説明は省略
する。
FIG. 6 is a block diagram of a shake correction imaging apparatus according to one embodiment of the present invention. The configuration of FIG. 1 is different from that of FIG. 1 in that there are 22 zoom lenses, and the other components indicated by reference numerals 10 to 21 are the same as those in FIG.

ズームレンズ22は切出サイズ演算回路の出力で制御を
行い、切出サイズが90%〜50%まで変化させたとき、ズ
ーム倍率比も90%〜50%まで同時に制御を行う。この制
御特性を第2図と第4図に合せて記す。このようにレン
ズのズーム倍率比を切出サイズと同時に制御することで
切出サイズの変化にともなう画角の変化をなくすことが
可能になる。したがって切出サイズの制御を行うスピー
ドを速くして、急激なゆれ量の変化に対応するゆれ制御
を行う場合にも画角の変化はなく、より十分なゆれ量の
補正と、補正後の高画質を両立さすことが可能となる。
The zoom lens 22 performs control based on the output of the cut-out size calculation circuit. When the cut-out size is changed from 90% to 50%, the zoom magnification ratio is simultaneously controlled from 90% to 50%. This control characteristic is described with reference to FIGS. 2 and 4. As described above, by controlling the zoom magnification ratio of the lens at the same time as the cutout size, it is possible to eliminate the change in the angle of view due to the change in the cutout size. Therefore, even when the speed at which the cutout size is controlled is increased to perform the shake control corresponding to a sudden change in the shake amount, the angle of view does not change. Image quality can be compatible.

尚、本実施例において撮像素子は白黒用カラー用どち
らとも限定していないが、白黒,カラーどちらの撮像素
子にも用いることが出来るのは明らかである。
In the present embodiment, the image sensor is not limited to black and white and color image sensors, but it is apparent that the image sensor can be used for both black and white and color image sensors.

また動き量の検出には、画像処理により求めたが、加
速度センサーや、角速度センサーにより、ビデオカメラ
自身の動き量を求め、画像の動き量に変換することも可
能である。また動き量を固定して切出サイズのみを制御
することにより電子ズームとしても使用できることは明
らかである。また動き量の最大値と画像切出サイズの関
係は一例であり、これ以外の特性も使用できるのはいう
までもない。
Although the motion amount is detected by image processing, the motion amount of the video camera itself can be obtained by an acceleration sensor or an angular velocity sensor and converted into the image motion amount. It is apparent that the electronic zoom can be used by controlling only the cutout size while fixing the amount of movement. Further, the relationship between the maximum value of the motion amount and the image cutout size is an example, and it goes without saying that other characteristics can be used.

発明の効果 本発明によれば、ゆれの補正量を自動的に制御し、切
出サイズを制御し、同時に補間特性を制御することによ
り大きなゆれ補正を行えるとともにゆれが少ない時には
切出サイズを大きくして画質の低下を少なくし、十分な
補正と補正後の高画質を両立させることが可能になり、
同時にゆれ補正の切出しサイズの変化に伴う画角の変化
をなくすことが可能になる。また電子ズームとしても使
用することができ、その実用的効果は大きい。
Effect of the Invention According to the present invention, a large shake correction can be performed by automatically controlling the amount of shake correction, controlling the cutout size, and simultaneously controlling the interpolation characteristics, and increasing the cutout size when the shake is small. It is possible to reduce the deterioration of the image quality and to achieve both a sufficient correction and a high image quality after the correction,
At the same time, it is possible to eliminate a change in the angle of view due to a change in the cutout size of the shake correction. It can also be used as an electronic zoom, and its practical effect is great.

【図面の簡単な説明】[Brief description of the drawings]

第1図は本発明の前提となる基本構成のゆれ補正撮像装
置のブロック図、第2図は同動き量と画像切出サイズ及
びズーム倍率の関係を示す特性図、第3図はメモリへの
書込アドレスの領域と読出アドレスの領域を示す平面
図、第4図は動き量と画像切出サイズ及びズーム倍率の
時間変化の関係を示す説明図、第5図は画像の切出しと
補間の実例を示す模式図、第6図は本発明の一実施例の
ブロック図、第7図は従来のゆれ補正装置のブロック
図、第8図は動き量の演算方法を示す平面図、第9図は
基準点移動方法を説明する平面図である。 10……撮像素子、11……A/D変換器、12……メモリ、13
……補間回路、14……動き量検出回路、15……駆動回
路、16……メモリ制御回路、17……動き制御回路、18…
…切出サイズ演算回路、19……走査量演算回路、20……
走査位置演算回路、21……D/A回路、22……ズームレン
ズ。
FIG. 1 is a block diagram of a shake correction imaging device having a basic configuration which is a premise of the present invention, FIG. 2 is a characteristic diagram showing the relationship between the same motion amount, image cutout size and zoom magnification, and FIG. FIG. 4 is a plan view showing a write address area and a read address area. FIG. 4 is an explanatory diagram showing a relationship between a motion amount and a time change of an image cutout size and a zoom magnification. FIG. 5 is an actual example of image cutout and interpolation. FIG. 6 is a block diagram of one embodiment of the present invention, FIG. 7 is a block diagram of a conventional shake correction apparatus, FIG. 8 is a plan view showing a method of calculating a motion amount, and FIG. It is a top view explaining a reference point moving method. 10 image sensor, 11 A / D converter, 12 memory, 13
…… Interpolation circuit, 14… Motion amount detection circuit, 15 …… Drive circuit, 16 …… Memory control circuit, 17 …… Motion control circuit, 18…
... Cutout size calculation circuit, 19 ... Scan amount calculation circuit, 20 ...
Scanning position calculation circuit, 21 ... D / A circuit, 22 ... Zoom lens.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 坂口 隆 大阪府門真市大字門真1006番地 松下電 器産業株式会社内 (56)参考文献 特開 昭61−198879(JP,A) 特開 昭58−137369(JP,A) 特開 昭54−89417(JP,A) ────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Takashi Sakaguchi 1006 Kazuma Kadoma, Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. (56) References JP-A-61-198879 (JP, A) JP-A-58- 137369 (JP, A) JP-A-54-89417 (JP, A)

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】光学像を電気信号に変換する撮像素子と、 前記撮像素子の出力撮像信号を書込み読出し可能なメモ
リと、 前記撮像信号のゆれを検出する動き量検出回路と、 前記動き量検出回路により検出された動き量に応じて前
記メモリの読出し信号に含まれる前記撮像信号のゆれ成
分を低減するための制御信号を合成する動き制御回路
と、 前記動き量が小さいとき読出し範囲を大きくし、前記動
き量が大きくなるにつれて読出し範囲が小さくなるよう
前記メモリに記憶された撮像信号から読出す範囲を制御
し同時にレンズのズーム倍率比を制御して前記読出し範
囲が小さいときレンズのズーム倍率比を小さくし前記読
出し範囲が大きいときレンズのズーム倍率比を大きくす
る切出サイズ制御部と、 前記メモリから読出された信号を信号の読出し範囲に応
じて補間する補間回路を備えたことを特徴とするゆれ補
正撮像装置。
An image sensor for converting an optical image into an electric signal; a memory capable of writing and reading an output image signal of the image sensor; a motion amount detection circuit for detecting a fluctuation of the image signal; A motion control circuit for synthesizing a control signal for reducing a fluctuation component of the imaging signal included in the read signal of the memory in accordance with the motion amount detected by the circuit; and increasing a read range when the motion amount is small. Controlling the range to be read out from the image signal stored in the memory so that the readout range becomes smaller as the amount of movement becomes larger, and simultaneously controlling the zoom magnification ratio of the lens; And a cutout size control unit that increases the zoom magnification ratio of the lens when the readout range is large, and converts the signal read out from the memory into a signal Shake correction image pickup apparatus characterized by comprising an interpolation circuit for interpolating according to the range out.
JP28242587A 1987-11-09 1987-11-09 Shake correction imaging device Expired - Fee Related JP2615693B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP28242587A JP2615693B2 (en) 1987-11-09 1987-11-09 Shake correction imaging device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP28242587A JP2615693B2 (en) 1987-11-09 1987-11-09 Shake correction imaging device

Publications (2)

Publication Number Publication Date
JPH01125064A JPH01125064A (en) 1989-05-17
JP2615693B2 true JP2615693B2 (en) 1997-06-04

Family

ID=17652242

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Application Number Title Priority Date Filing Date
JP28242587A Expired - Fee Related JP2615693B2 (en) 1987-11-09 1987-11-09 Shake correction imaging device

Country Status (1)

Country Link
JP (1) JP2615693B2 (en)

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JPH03216080A (en) * 1990-01-22 1991-09-24 Aiwa Co Ltd Video signal processing unit
JP2827424B2 (en) * 1990-03-31 1998-11-25 ソニー株式会社 Image stabilization device
JP2971513B2 (en) * 1990-05-21 1999-11-08 松下電器産業株式会社 Image motion vector detection device and shake correction device
JPH0481079A (en) * 1990-07-20 1992-03-13 Kawaju Gifu Eng Kk Picture stablizer for video camera
JP2773404B2 (en) * 1990-08-06 1998-07-09 松下電器産業株式会社 Motion detection circuit and camera shake correction device
JPWO2006046387A1 (en) * 2004-10-04 2008-05-22 松下電器産業株式会社 Imaging device and camera shake correction device
JP2007067694A (en) * 2005-08-30 2007-03-15 Mitsubishi Electric Corp Apparatus and method for encoding image, camera, and portable terminal equipment
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JP4952891B2 (en) * 2006-05-08 2012-06-13 カシオ計算機株式会社 Movie shooting device and movie shooting program
JP5393877B2 (en) 2010-04-16 2014-01-22 パナソニック株式会社 Imaging device and integrated circuit
JP2012055498A (en) * 2010-09-09 2012-03-22 Olympus Corp Image processing device, endoscope device, image processing program, and image processing method
JP6466638B2 (en) * 2013-12-18 2019-02-06 Kddi株式会社 Terminal, system, program, and method for thinning frames of a captured moving image according to a motion change amount

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JPS61198879A (en) * 1985-02-27 1986-09-03 Matsushita Electric Ind Co Ltd Television signal processor

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