JPS62224179A - Television camera device - Google Patents

Television camera device

Info

Publication number
JPS62224179A
JPS62224179A JP61065755A JP6575586A JPS62224179A JP S62224179 A JPS62224179 A JP S62224179A JP 61065755 A JP61065755 A JP 61065755A JP 6575586 A JP6575586 A JP 6575586A JP S62224179 A JPS62224179 A JP S62224179A
Authority
JP
Japan
Prior art keywords
correction
screen
correction data
registration
distortion
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
JP61065755A
Other languages
Japanese (ja)
Inventor
Yukihiro Masuda
増田 行宏
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.)
Hitachi Denshi KK
Original Assignee
Hitachi Denshi KK
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 Hitachi Denshi KK filed Critical Hitachi Denshi KK
Priority to JP61065755A priority Critical patent/JPS62224179A/en
Publication of JPS62224179A publication Critical patent/JPS62224179A/en
Pending legal-status Critical Current

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  • Image Processing (AREA)
  • Color Television Image Signal Generators (AREA)

Abstract

PURPOSE:To eliminate registration distortion over the entire screen by calculating a distortion correction data at the outside of the region of the screen and correcting a registration of the entire screen together with the distortion correction data at a branch cross point of the screen. CONSTITUTION:Correction data of correction lattice center points P11, P12,... in the screen are calculated by a CPU 1 by using a correction chart or the like, a correction data y0 at a virtual correction lattice point P10 in the blanking region is operated by using correction data y1-y3 in correction lattice points P11-P13 in the screen and the result is stored in a digital memory 2. The correction data of each region read in synchronism with the scanning by a synchronizing signal generating circuit 3 becomes a registration correction waveform via a D/A converter 4. The correction waveform is superimposed on the deflected waveform formed by a deflection waveform generating circuit 5, the result is fed to a deflection circuit 6 to apply registration correction.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、多管式カラーテレビジ胃ンカメラ装置に使用
するディジタルレジストレージ菖ンノ自動補正に関する
ものである。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to automatic digital register storage correction for use in a multi-tube color television camera apparatus.

(従来の技術) ディジタルレジストレーション補正(以下1)RCと略
す)とは、撮像画面を第2図に示すように垂直方向、水
平方向(以下それぞれをV、Hと略す)にいくつかの領
域に分割し、それぞれの領域で独立してレジストレージ
璽ン補正が行なえるようにしたもので、基本的な構成を
第4図に示す。
(Prior art) Digital registration correction (hereinafter referred to as 1), RC) is a method that corrects the image capture screen by dividing it into several areas in the vertical and horizontal directions (hereinafter referred to as V and H, respectively) as shown in Figure 2. The basic configuration is shown in FIG. 4. The basic configuration is shown in FIG. 4.

この動作はあらかじめ個々の領域の補正データを補正用
チャート等を用−てCPU1で算出し、ディジタルメモ
リ2に記憶させておき、同期信号発生回路3によシ走査
に同期して読み出す。読み出された各領域の補正データ
は、D/Aコンバータ4によシディジタルーアナログ変
換され、補間演算してレジストレージ冒ン補正波形とな
る。この補正波形を偏向波形発生回路5で作られる偏向
波形に重畳し、偏向回路6に供給してレジストレージ冒
ン補正を行う。このDROで、精密に画面全体のレジス
トレーションを合わせるためには1分割数をちる程度多
くと力、細かく調整する必要がある。しかし、細かく分
割された領域を1つ1つ手動で調整するには、調整に要
する時間が非常に多くなる。このため、最近では測定に
適したチャートを撮像し、各領域のレジストレーション
のずれ量を検出し、マイクロコンピュータによ〃自動的
にレジストレーション補正を行なうことが行なわ昭 nる(例えば、特開ks7−2x66号公報に示されて
いる)。この自動補正のことをオートセットア。
In this operation, correction data for each area is calculated in advance by the CPU 1 using a correction chart or the like, stored in the digital memory 2, and read out by the synchronization signal generation circuit 3 in synchronization with scanning. The read correction data for each area is digital-to-analog converted by the D/A converter 4, and subjected to interpolation calculations to become a registration storage correction waveform. This correction waveform is superimposed on the deflection waveform generated by the deflection waveform generation circuit 5, and is supplied to the deflection circuit 6 to perform registration storage correction. With this DRO, in order to accurately match the registration of the entire screen, it is necessary to make fine adjustments by increasing the number of divisions. However, manually adjusting each finely divided area one by one requires a significant amount of time. For this reason, recently it has become possible to image a chart suitable for measurement, detect the amount of registration deviation in each region, and automatically perform registration correction using a microcomputer (for example, in Japanese Patent Application Laid-Open No. ks7-2x66). Autoset this automatic correction.

プという。ここで、チャートを撮像し、オートセットア
ツプを行なうと、以下に示す問題点が生じる。
It's called pu. If the chart is imaged and auto-setup is performed, the following problems occur.

第2図に示すように、垂直方向及び水平方向をn、mに
分割した場合を考える。図中の各格子点Pi」が補正の
中心を示している。オートセットアツプ時には、この各
格子点Pij上にチャートの測定用パターン(一般には
第2図で破線で示す7字チャートが使用される)が重な
るように撮像され。
As shown in FIG. 2, consider the case where the vertical and horizontal directions are divided into n and m. Each lattice point Pi'' in the figure indicates the center of correction. During automatic set-up, a measurement pattern of a chart (generally, a 7-character chart indicated by a broken line in FIG. 2 is used) is imaged so as to overlap each grid point Pij.

自動測定される。ここで各格子点Pijでは、撮像した
パターンのずれ量が測定され、このずれ量を補正するよ
うにDROが動作するため2画面の各格子点Pijで囲
まれる枠内では、レジストレージ−4ノ歪が正確に補正
される。しかしパターンを撮像できない画面の上下左右
の周辺部では1画像の歪が測定できないので、補正デー
タが算出できず。
Automatically measured. Here, at each lattice point Pij, the amount of deviation of the imaged pattern is measured, and the DRO operates to correct this amount of deviation. Distortion is corrected accurately. However, since the distortion of a single image cannot be measured in the upper, lower, left, and right peripheral areas of the screen where no pattern can be imaged, correction data cannot be calculated.

画面全体の正確な補正を行なうことができない。It is not possible to accurately correct the entire screen.

このため第2図の破線で示す様に2画面の隅ではレジス
トレーションずれが生ずる。
For this reason, a misregistration occurs at the corners of the two screens, as shown by the broken line in FIG.

このためチャートの測定パターンを、なるべく画面の有
効走査枠(第2図の一点鎖線)いっばいに撮像し、測定
を行なうことが考えられるが、あまシ有効走査枠いっば
いにとると、歪の量が大きイトキニパターンがブランキ
ング領域(第2図の斜線の領域)にかかったフするため
、自動補正の引き込み範囲が狭くなる等の問題が生ずる
For this reason, it is possible to image the measurement pattern of the chart in the effective scanning frame (dotted chain line in Fig. 2) of the screen at the same time and perform the measurement, but if the measurement pattern is taken in the effective scanning frame all at once, the distortion will increase. Since the pattern with a large amount covers the blanking area (the shaded area in FIG. 2), problems such as a narrowing of the automatic correction pull-in range occur.

(発明が解決しようとする問題) 前述のごとくレジストレーション歪の自動補正には数々
の問題点がある。本発明は、これらの欠を 点零解決するため、ブランキング領域における補正デー
タも算出することによシ、全画面で、レジストレーショ
ン歪がなくなるようにすることを目的とする。
(Problems to be Solved by the Invention) As described above, automatic correction of registration distortion has many problems. In order to solve these defects point-to-point, it is an object of the present invention to eliminate registration distortion on the entire screen by also calculating correction data in the blanking area.

(問題点を解決するための手段) 本発明は、上記の目的を達成するため、ブランキング領
域中の補正の仮想格子中心点PIOの歪補正データy0
を1画面内の補正格子中心点pH、pu 。
(Means for Solving the Problems) In order to achieve the above object, the present invention provides distortion correction data y0 of the correction virtual grid center point PIO in the blanking area.
is the corrected grid center point pH, pu within one screen.

PI3(この点は、前述のようにして測定用チャートに
よシ、歪が測定される)の補正データYI+ Y2 r
y、に基づき演算することによって作シ出し1画面全体
のレジストレーション歪を補正するようにしたものであ
る。
Correction data YI+ Y2 r of PI3 (distortion at this point is measured using the measurement chart as described above)
By calculating based on y, the registration distortion of the entire first screen is corrected.

(実施例) 以下この実施例について、第1図、第3図を用いて説明
する。第1図で、横軸Xは画面の補正格子点を、縦軸y
は歪補正量を示す。ブランキング領域中の仮想補正格子
点P0゜における補正データy0を求めるため2画面の
周辺部の補正格子点PI□。
(Example) This example will be described below with reference to FIGS. 1 and 3. In Figure 1, the horizontal axis X represents the correction grid points on the screen, and the vertical axis y
indicates the amount of distortion correction. In order to obtain the correction data y0 at the virtual correction grid point P0° in the blanking area, the correction grid point PI□ is used at the periphery of the two screens.

P、2P、3の補正データy1.y2.y3を用いて演
算する。
P, 2P, 3 correction data y1. y2. Calculate using y3.

ここで、歪補正量yは、下記の一般式で表わされる。Here, the distortion correction amount y is expressed by the following general formula.

y=f(x)=anx’ +an−+X” ’)−・−
+a0−・−−−−−−(1)ただし、補正格子点Pi
jを、x=1.2.・・・、ブランキング領域中の仮想
補正格子点P8゜をx = Q、 nを補間演算の次数
キー4とする。よってブランキング領域中の補正データ
はaoとなる。一般に実際のDROの分割数等を考慮す
ると、n=0〜2とするのが一般的である。よって、n
の設定によって(1)式は下式の様になる。
y=f(x)=anx'+an-+X''')--
+a0−・−−−−−−(1) However, the correction grid point Pi
j, x=1.2. ..., the virtual correction grid point P8° in the blanking area is x = Q, and n is the order key 4 of the interpolation calculation. Therefore, the correction data in the blanking area is ao. Generally, considering the actual number of DRO divisions, n=0 to 2 is common. Therefore, n
Depending on the setting, equation (1) becomes as shown below.

n = Qのと!、、f(x)=a、    ・・・・
・・・・・・・・・・・(2)n = lのとき、  
f(幻= a、x + ao  ・・・・・・・・・・
・・(3)n=2のとき+ f (x) = a2x”
+a、x + 30曲、、(4)つまj) 、  n 
= 0.1.2によって0次、1次、2次の補間がなさ
れるということになる。(2) 、 (3) 、 (4
)式よりブランキング領域における仮想補正格子点X。
n = Q's! ,,f(x)=a,...
・・・・・・・・・・・・(2) When n = l,
f (illusion = a, x + ao ・・・・・・・・・・・・
...(3) When n=2 + f (x) = a2x"
+a, x + 30 songs, (4) Tsuma j), n
= 0.1.2 means that 0th, 1st, and 2nd order interpolation is performed. (2) , (3) , (4
) is the virtual correction grid point X in the blanking area.

の補正データを演算するためには、0次の場合は補正格
子点X1の補正データが、1次の場合は補正格子点X、
とX2の補正データが、2次の場合は補正格子点x、と
x2とX3の補正データが必要となる。
In order to calculate the correction data of correction grid point X1 in the case of 0th order, the correction data of correction grid point
If the correction data for and X2 is quadratic, correction data for the correction grid point x, x2, and X3 are required.

ここでn = 2とした。上記(4)式の場合の具体的
演算を以下に示す。
Here, n = 2. Specific calculations for the above equation (4) are shown below.

f (X=l )= 82+a、−1−ao  111
111HH1l゛山HH++H+H1l (5)f (
X=2 )=4 a2+ 28. + a。−萌−・・
・・−−−−−(6)f (X=3 )= 9 a、 
+ 3a、 + a。−、・、、、、、、、、、、、、
 (7)f(x=o)= ao   四・・・・・曲・
・・・・・・・・・・四・・(S)上記(5) 、 (
6) 、 (7)式よシaoを求めれば、ブランキング
領域における仮想補正格子点X。の補正データf(X=
0)が求まる。すなわち、上記(5) 、 (6) 、
 (7)式より、a、、a、を消去すれば。
f (X=l)=82+a,-1-ao 111
111HH1l゛Mountain HH++H+H1l (5) f (
X=2 )=4 a2+ 28. + a. -Moe-・・
...---(6) f (X=3)=9 a,
+3a, +a. −、・、、、、、、、、、、、
(7) f(x=o)=ao 4...song...
・・・・・・・・・・・・(S) (5) above, (
6) If sheao is calculated from equation (7), then the virtual correction grid point X in the blanking area is obtained. Correction data f(X=
0) can be found. That is, the above (5), (6),
From equation (7), if we eliminate a,,a,.

f(o)= 3 f(+)−3f(2) 十f(3)=
 ao−・−−−−(9)となる。
f(o)=3 f(+)-3f(2) 10f(3)=
ao-----(9).

実際の算出に当っては、nの値は、撮像管とコイルアセ
ンブリの組み合わせの違いや、撮像管の偏向方式等で異
なってくるため実験的に求め設定する必要がある。
In actual calculation, the value of n needs to be experimentally determined and set because it varies depending on the combination of the image pickup tube and the coil assembly, the deflection method of the image pickup tube, and the like.

以上の様にして算出したブランキング領域における仮想
補正格子点X。の補正データは、第4図に示す画面分割
の各補正格子点の補正データが記憶されているディジタ
ルメモリ比の対応アドレスに記憶される。第3図に本発
明の動作を示すフローチャートを示す。
Virtual correction grid point X in the blanking area calculated as described above. The correction data is stored at the corresponding address of the digital memory ratio where the correction data of each correction grid point of the screen division shown in FIG. 4 is stored. FIG. 3 shows a flowchart showing the operation of the present invention.

この結果、従来得られなかった1画面の周辺部の補正デ
ータが得られ1画面全体のレジストレージ3ン歪を確実
に補正することができる。
As a result, correction data for the periphery of one screen, which could not be obtained conventionally, can be obtained, and registration distortion of the entire one screen can be reliably corrected.

(発明の効果) 本発明によれば、測定用チャートを用いてDRCのオー
トセットアツプを実行したときにも、全画面で精度良く
画像歪の補正を行なうことができる。
(Effects of the Invention) According to the present invention, image distortion can be corrected with high accuracy on the entire screen even when DRC auto-setup is executed using a measurement chart.

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

第4図は一般的DRCの構成を示すブロック図。 第2図は画面分割の様子を示す模式図、第1図は本発明
の詳細な説明するための図、第3図は本発明のフローチ
ャートである。 1:(:!PtJ、2:ディジタルメモリ、X0ニブラ
ンキング領域における仮想補正格子点’  Xl 1 
Xi + x3:画面分割の補正格子点r  YO:仮
想補正格子点X。 の補正データ。 弁2図 η1 71回 イ 印4図 3       才北
FIG. 4 is a block diagram showing the configuration of a general DRC. FIG. 2 is a schematic diagram showing how the screen is divided, FIG. 1 is a diagram for explaining the present invention in detail, and FIG. 3 is a flowchart of the present invention. 1: (:!PtJ, 2: Digital memory, virtual correction grid point in the X0 nib blanking area' Xl 1
Xi + x3: Screen division correction grid point r YO: Virtual correction grid point X. correction data. Valve 2 figure η1 71 times I mark 4 figure 3 Saihoku

Claims (1)

【特許請求の範囲】[Claims] 画面を水平方向及び垂直方向に分割した交点の歪補正デ
ータをディジタル値で記憶し、歪補正調整時、読み出し
た上記歪補正データをアナログ信号に変換し、該信号に
基づいてレジストレーション補正を行なうカラーテレビ
ジョンカメラ装置において、上記記憶されている画面の
分割交点の歪補正データに基づいて、該画面の最も外側
の分割交点で囲まれる領域外の歪補正データを算出する
手段を設け、上記画面の分割交点の歪補正データと合わ
せて画面全体のレジストレーション補正をすることを特
徴とするカラーテレビジョンカメラ装置。
Distortion correction data at the intersections of dividing the screen into horizontal and vertical directions is stored as digital values, and when adjusting distortion correction, the read out distortion correction data is converted into an analog signal, and registration correction is performed based on the signal. In the color television camera device, means is provided for calculating distortion correction data outside the area surrounded by the outermost division intersection of the screen based on the stored distortion correction data of the division intersection of the screen, and the screen A color television camera device is characterized in that registration correction is performed for the entire screen in conjunction with distortion correction data at division intersections.
JP61065755A 1986-03-26 1986-03-26 Television camera device Pending JPS62224179A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61065755A JPS62224179A (en) 1986-03-26 1986-03-26 Television camera device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61065755A JPS62224179A (en) 1986-03-26 1986-03-26 Television camera device

Publications (1)

Publication Number Publication Date
JPS62224179A true JPS62224179A (en) 1987-10-02

Family

ID=13296160

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61065755A Pending JPS62224179A (en) 1986-03-26 1986-03-26 Television camera device

Country Status (1)

Country Link
JP (1) JPS62224179A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55135483A (en) * 1979-04-09 1980-10-22 Toshiba Corp Color television camera device
JPS59167194A (en) * 1983-03-11 1984-09-20 Hitachi Ltd Registration correcting circuit of color television camera

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55135483A (en) * 1979-04-09 1980-10-22 Toshiba Corp Color television camera device
JPS59167194A (en) * 1983-03-11 1984-09-20 Hitachi Ltd Registration correcting circuit of color television camera

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