JPS6022735B2 - Surface defect detection device - Google Patents

Surface defect detection device

Info

Publication number
JPS6022735B2
JPS6022735B2 JP1284878A JP1284878A JPS6022735B2 JP S6022735 B2 JPS6022735 B2 JP S6022735B2 JP 1284878 A JP1284878 A JP 1284878A JP 1284878 A JP1284878 A JP 1284878A JP S6022735 B2 JPS6022735 B2 JP S6022735B2
Authority
JP
Japan
Prior art keywords
signal
shutter
sent
image
video
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
Application number
JP1284878A
Other languages
Japanese (ja)
Other versions
JPS54105593A (en
Inventor
卓治 宇野
正昭 樽井
啓至 太宰
隆 江森
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.)
IHI Corp
Original Assignee
IHI Corp
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 IHI Corp filed Critical IHI Corp
Priority to JP1284878A priority Critical patent/JPS6022735B2/en
Publication of JPS54105593A publication Critical patent/JPS54105593A/en
Publication of JPS6022735B2 publication Critical patent/JPS6022735B2/en
Expired legal-status Critical Current

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  • Closed-Circuit Television Systems (AREA)

Description

【発明の詳細な説明】 本発明は、移動物体表面の欠陥部を検出する装置に関す
るもので、熱間探傷を可能にして自動癖取りを図り得る
ものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for detecting defects on the surface of a moving object, which enables hot flaw detection and automatic deformation.

移動物体、例えば分塊圧延工程における熱間鋼材の探傷
、所謂熱間探傷が可能になれば熱間での癖除去が可能と
なて従来行われてきた冷却や癖除去や再加熱等の行程を
大幅に簡略化して省エネルギー化を図り得ると共に、目
視による庇検出や人力による癖取りをなくし得て省力化
を図り得るので、従来より種々の探傷方式が採用されて
いる。
If so-called hot flaw detection becomes possible, such as flaw detection of moving objects, such as hot steel materials in the blooming and rolling process, it will be possible to remove flaws in the hot state, and processes such as cooling, deformation removal, and reheating that were conventionally performed will become possible. Conventionally, various flaw detection methods have been adopted because they can greatly simplify the process and save energy, and also eliminate the need for visual eaves detection and manual deformation, thereby saving labor.

例えば熱間深傷をビジコンテレビカメラで行う方法、所
謂走行鋼材をビジコン(撮像管)で綾像し受像器に写し
て作業員が目視で庇を判断する方法が採用されているが
、このようにビジコンで走行物体を撮像すると残像が生
じて信号処理(自動癖判別)を適切に行に得ない。この
ためにビジコンテレビカメラにシヤツターを敬付けてテ
レビの走査線が走査開始前にシャッターを開閉するシャ
ッター付ビジコンテレビカメラが採用されている。
For example, methods have been adopted in which deep hot damage is detected using a vidicon television camera, and a method in which workers visually judge the eaves by imaging the so-called running steel with a vidicon (image pickup tube) and displaying it on a receiver. When a moving object is imaged with a vidicon, an afterimage occurs and signal processing (automatic habit discrimination) cannot be performed properly. For this purpose, a business-con television camera with a shutter is used, which opens and closes the shutter before the television scan line starts scanning.

現在、1秒間に3加画面を作ると共に1つの画像の走査
線数が525本であって1本おきに飛越走査を行う方式
がテレビカメラに採用されている。この場合1/60秒
で走査してできる像を1フィールド、又次のフィールド
を合わせて1フレームと称している。前述の従来方式に
おいて、数フィールド‘こ1回シャッターを開閉するビ
ジコンテレビカメラで熱間癖を深傷する方式が考えられ
ているが、シャッター開閉後の1フィールドでは鮮明な
像が見られその後順次暗く不鮮明になって次のシャッタ
ーが開閉するフィールドまで続き、このために像をその
まま信号処理(泥検出)すると、{ィ)画像が数フィー
ルド毎に明暗を繰り返すことになって非常に見にくくな
る。
At present, television cameras employ a system in which a triadic image is created per second, the number of scanning lines in one image is 525, and interlaced scanning is performed every other line. In this case, an image formed by scanning at 1/60 seconds is called one field, and the next field together is called one frame. In the conventional method mentioned above, a method has been considered in which a vidicon television camera is used to deeply damage the heat damage by opening and closing the shutter once for several fields, but a clear image can be seen in the first field after the shutter is opened and closed, and then one after another. The field becomes dark and indistinct until the next field when the shutter opens and closes, and for this reason, if the image is subjected to signal processing (mud detection) as it is, the image will repeat brightness and darkness every few fields, making it very difficult to see.

‘。'.

’映像信号が数フィールド毎に大きくなったり小さくな
ったりするので、通常のビデオ機器ではしベル合わせが
困難で特性の合わない点が生じる。W 信号処理結果を
オンラインでは見にくい。
'Since the video signal increases or decreases every few fields, it is difficult to match the signal level with ordinary video equipment, resulting in points where the characteristics do not match. W It is difficult to see the signal processing results online.

6 各フィールド毎にレベルが変わってフィールド内で
のレベル平均を取ることができないために自動利得調整
及び自動比較レベル調整回路を組み込むことができない
6. Since the level changes for each field and it is not possible to average the level within a field, it is not possible to incorporate automatic gain adjustment and automatic comparison level adjustment circuits.

等の不具合な点を有する。It has some disadvantages such as.

本発明は「上記不具合な点を解消し得る表面欠陥検出装
置に係るもので、数フィールドに1回シャッターを開閉
作動するシャッター付ピジコンテレビカメラと、このテ
レビカメラからの映像信号のうち特定のフィールド映像
のみを録画しこの鍵画を再成して出力する録画装贋と、
この緑面装置からの出力を受け癖検出用信号として処理
する処理装置とからなることを特徴とするものである。
The present invention relates to a surface defect detection device capable of solving the above-mentioned problems, and includes a Pijicon television camera with a shutter that opens and closes the shutter once every few fields, and A recording device that records only field footage and regenerates and outputs this key image,
The present invention is characterized by comprising a processing device that receives the output from the green surface device and processes it as a habit detection signal.

本発明の実施例について第1図を参照しつつ説明する。
水平偏向コイル2と垂直偏向コイル3とを有し、レンズ
4により高速移動物体Mを結像面に結像しこの画像を電
気信号に変換するピジコン1を通耳配設しト談ビジコン
1に増幅器5を接続して映像信号を増幅して取出し得る
ようにし「前記水平偏向コイル2と基準信号発振器6と
を水平偏向回路7を介し接続して水平走査線の走査を適
宜行い得るようにすると共に、前記垂直偏向コイル3と
基準信号発振器6とを垂直偏向回路8及び分周器9を順
次介し接続して垂直走査線の走査を適宜行い得るように
し、シャッター10の駆動用モ−夕11の制御増幅器1
2と上記分周器9とを位相弁別器13及び分周器14を
順次介し接続し「シャッター10の位燈を検出するため
の位相検出器15を位相弁別器i3に接続してシャツ夕
…10のフィードバック制御を行い得るようにし、且つ
分周器14から映像取出しタイミング信号を取出し得る
ように、数フィールド毎に1回シャッター10を開閉す
るシャッター付ビジコンテレビカメラ1を構成する。又
上記シャッター付ピジコンテレビカメラ1の増幅器5か
らの映像信号を入力とする緑画回路16と、分周器14
からの映像取出しタイミング信号を入力とする銀画再成
制御回路貴7とを接続し、癖検出用信号処理装置血と接
続せる再成回路18を緑画回路16と録画再成制御回路
17とに夫々接続し、且つ録画媒体(例えば磁気ディス
ク)19を介し録画回路16と再成回路18とを接続し
て録画装置ロを構成する。基準信号発振器6からの信号
によりビジコンーの水平及び垂直走査がなされる。又高
速移動物体Mがレンズ4によりシヤツター10のスリッ
ト18Aを介してビジコン1の結像面に結像され〜 こ
の結像が電気信号に変換されて映像信号となり、この映
像信号が増幅器5により適宜増幅されて鍵画装置0の録
画回路亀6に送られる。一方基準信号発振器6の垂直走
査用信号が分周器14から位相弁別器翼3に送られ「
この送られた信号によりシャッター軍Qが開閉制御され
ると共に、シャッター10の位置が位相検出器15から
位相弁別器亀SIこフィードバックされる。このように
して数フィールド毎に1回シャッターIQを開閉作動す
るシャッター付ビジコンテレビカメラ1の分席器14か
ら「シャッター開閉後に映像を取出すべきフィールドに
同期して映像取出しタイミング信号が緑画菱層ロの録画
再成制御回路17に送られ、この録画再成制御回路17
からの信号により録画回路16及び再成回路i8が作動
しシャッター付ビジコンテレビカメラ1の増幅器5から
の映像信号が鍵画媒体19に1フィールド分縁画され、
次いで再成回路18で再成されて癖検出用信号処理装置
mに送られ適宜処理される。従って不便用のフィール日
こ有効画像を挿入するので、画像の明暗の繰り返しをな
くし得て見易くできると共に、ビデオ機器のレベル合わ
せの容易化をなし得る。第2図に示すものは、本発明の
他の実施例にして録画装置にシートレコーダを用いたも
のである。鍵画装置Nは、シャッター付ビジコンテレビ
カメラ1からの映像信号が録画用増幅器20とヘッド書
き込み用増幅器21と電子式切替スイッチ22を順次介
し録画シート23に送られ録画されるようになっている
と共に、緑画用増幅器20からの映像信号が電子式切替
スイッチ24と再成用増幅器25を順次介し癖検出用信
号処理装置mに送られるようになっており、且つ電子式
切替スイッチ22と24とが読み出し用増幅器26を介
し後銃されしかもこれら電子式切替スイッチ22,24
が映像取出しタイミング信号により切替作動するように
なっているものである。
An embodiment of the present invention will be described with reference to FIG.
A bisicon 1 which has a horizontal deflection coil 2 and a vertical deflection coil 3, images a high-speed moving object M on an imaging plane using a lens 4, and converts this image into an electric signal is arranged through the ear and is used as a bisicon 1. An amplifier 5 is connected so that the video signal can be amplified and extracted, and the horizontal deflection coil 2 and the reference signal oscillator 6 are connected via a horizontal deflection circuit 7 so that horizontal scanning lines can be scanned as appropriate. At the same time, the vertical deflection coil 3 and the reference signal oscillator 6 are connected via a vertical deflection circuit 8 and a frequency divider 9 in order so that vertical scanning lines can be scanned as appropriate. control amplifier 1
2 and the frequency divider 9 are connected sequentially through the phase discriminator 13 and the frequency divider 14, and the phase detector 15 for detecting the light of the shutter 10 is connected to the phase discriminator i3, and the phase detector 15 is connected to the phase discriminator i3. A vidicon television camera 1 with a shutter is configured to open and close the shutter 10 once every several fields so as to be able to perform feedback control of 10 times and to take out a video take-out timing signal from the frequency divider 14. A green screen circuit 16 which inputs the video signal from the amplifier 5 of the attached Pigicon television camera 1, and a frequency divider 14.
A regeneration circuit 18 is connected to the silver image regeneration control circuit No. 7 which inputs the image retrieval timing signal from the green image regeneration control circuit 17, and a regeneration circuit 18 is connected to the signal processing device for habit detection. A recording circuit 16 and a regeneration circuit 18 are connected to each other via a recording medium (for example, a magnetic disk) 19 to constitute a recording apparatus B. The signals from the reference signal oscillator 6 cause horizontal and vertical scanning of the vidicon. In addition, a high-speed moving object M is imaged by the lens 4 through the slit 18A of the shutter 10 on the imaging plane of the vidicon 1. This image is converted into an electric signal to become a video signal, and this video signal is sent to the amplifier 5 as appropriate. The signal is amplified and sent to the recording circuit 6 of the key image device 0. On the other hand, the vertical scanning signal of the reference signal oscillator 6 is sent from the frequency divider 14 to the phase discriminator blade 3.
The sent signal controls the opening and closing of the shutter Q, and the position of the shutter 10 is fed back from the phase detector 15 to the phase discriminator SI. In this way, from the splitter 14 of the videocon television camera 1 with a shutter, which opens and closes the shutter IQ once every several fields, the video retrieval timing signal is sent to the green image layer in synchronization with the field from which the image should be taken after opening and closing the shutter. It is sent to the recording and regeneration control circuit 17 of B, and this recording and regeneration control circuit 17
The recording circuit 16 and the regeneration circuit i8 are activated by the signal from the shutter, and the video signal from the amplifier 5 of the shutter-equipped videocon television camera 1 is divided into one field into the key image medium 19.
The signal is then regenerated by the regeneration circuit 18, sent to the habit detection signal processing device m, and processed as appropriate. Therefore, since the inconvenient field image is inserted, it is possible to eliminate the repetition of brightness and darkness in the image, making it easier to see, and also making it easier to adjust the level of the video equipment. FIG. 2 shows another embodiment of the present invention in which a sheet recorder is used as the recording device. In the key image device N, a video signal from a business-con television camera 1 with a shutter is sent to a recording sheet 23 through a recording amplifier 20, a head writing amplifier 21, and an electronic changeover switch 22 in order to be recorded. At the same time, the video signal from the green image amplifier 20 is sent to the habit detection signal processing device m via the electronic changeover switch 24 and the regeneration amplifier 25 in sequence, and the electronic changeover switches 22 and 24 and the electronic selector switches 22 and 24 are connected via the readout amplifier 26.
The switching operation is performed in response to a video take-out timing signal.

第3図A〜Eは第2図に示す実施例のタイミングチャー
トであり、第3図中Aはシャッターの開閉作動、Bは映
像信号、Cは映像取出しタイミング信号、Dは録画装置
のモード、Eは録画装置の出力信号を夫々示す。
3A to 3E are timing charts of the embodiment shown in FIG. 2, in which A is the shutter opening/closing operation, B is the video signal, C is the video take-out timing signal, D is the mode of the recording device, E indicates the output signal of the recording device, respectively.

シャッター付ビジコンテレビカメラ1から第3図Bに示
す如き映像信号がシャッターの開閉作動に伴ない線画装
置Nの録画用増幅器201こ送られる。
A video signal as shown in FIG. 3B is sent from the shutter-equipped vidicon television camera 1 to the recording amplifier 201 of the line drawing device N as the shutter opens and closes.

この送られた映像信号がヘッド書き込み用増幅器21及
び電子式切替スイッチ22を介し録画シート23に送ら
れ鏡画されると共に、電子式切替スイッチ24及び再成
用増幅器25を介し癖検出用信号処理装置mに送られる
。又シャッター開閉作動の数フィールド毎に映像取出し
タイミング信号が第3図Cに示す如く電子式切替スイッ
チ22と24に送られ、一方の電子式切替スイッチ22
はRECからPLAYに又他方の電子式切替スイッチ2
4はPLAYからRECに夫々切替わり、即ち録画装置
のモードが第3図Dの如くなって鏡画シート23に録画
された映像信号は電子式切替スイッチ22と読み出し用
増幅器26と電子式切替スイッチ24と順次経て再成用
増幅器25に送られて再生され庇検出用信号処理装置m
に送られる。従って第3図Eの如き信号が癖検出用信号
処理装置皿こ送られることになる。第3図E中E^は非
再成画像、EBは再成画像の信号を夫々示す。第4図に
示すものは、本発明の更に他の実施例にして録画装置に
蓄積管を用いたものである。この緑画装置Vは、シャッ
ター付ビジコンテレビカメラ1からの映像信号が同期分
離器27と映像用増幅器28と書き込み用増幅器29を
順次介して蓄積管3川こ送られ録画されるようになって
いると共に、映像用増幅器28から増幅映像信号が電子
式切替スイッチ31と同期合成出力用増幅器32を順次
介し癖検出用信号処理装置mに送られるようになってお
り、消去と書き込めと読み出しの各制御ロジック回路3
3の一方の入力端にシャッター付ビジコンテレビカメラ
1からの映像取出しタイミング信号がカウンタ34に介
し又制御ロジック回路33の他の入力端にカウンタ34
を介さずに送られて前記蓄積管30と電子式切替スィッ
チ31に作動指示を与え得るようになっており、更にこ
の指示により読み出し用増幅器35で蓄積管30の緑画
が読み出され癖検出用信号処理装置mに送られるように
なっているものである。第5図A〜Gは第4図に示す実
施例のタイミングチャートであり、第5図中Aは垂直同
期信号、Bはシャッターの開閉作動、CはTVカメラ出
力映像信号、Dは映像取出しタイミング信号、Eはカウ
ンタの出力信号、Fは緑画装置のモード、Gは緑画装置
の出力信号を夫々示す。シャッター付ビジコンテレピカ
メラ1から第5図Cに示す如き映像信号がシャッターの
開閉作動に伴ない縁画装置Vの映像用増幅器28を介し
蓄積管30‘こ送られ鏡画されると共に、映像用増幅器
28から電子式切替スイッチ31及び同期合成出力用増
幅器32を介し映像信号が癖検出用信号処理装置mに送
られる。
The sent video signal is sent to the recording sheet 23 via the head writing amplifier 21 and the electronic changeover switch 22 and is mirror-imaged, and is also sent to the recording sheet 23 via the electronic changeover switch 24 and the regeneration amplifier 25 for signal processing for habit detection. is sent to device m. Also, every few fields of the shutter opening/closing operation, an image take-out timing signal is sent to the electronic changeover switches 22 and 24 as shown in FIG.
is from REC to PLAY and the other electronic selector switch 2
4 respectively switches from PLAY to REC, that is, the mode of the recording device becomes as shown in FIG. 24, and is sequentially sent to a regeneration amplifier 25 and regenerated to the eaves detection signal processing device m.
sent to. Therefore, a signal as shown in FIG. 3E is sent to the signal processing device for detecting the habit. In FIG. 3E, E^ indicates a signal of a non-regenerated image, and EB indicates a signal of a regenerated image. FIG. 4 shows still another embodiment of the present invention in which a storage tube is used in a recording device. In this green screen device V, a video signal from a videocon television camera 1 with a shutter is sequentially passed through a sync separator 27, a video amplifier 28, and a writing amplifier 29, and is sent to three storage tubes for recording. At the same time, the amplified video signal from the video amplifier 28 is sent to the quirk detection signal processing device m via the electronic changeover switch 31 and the synchronous synthesis output amplifier 32 in order, and is used for erasing, writing, and reading. Control logic circuit 3
The image take-out timing signal from the videocon television camera 1 with a shutter is connected to one input terminal of the control logic circuit 33, and the counter 34 is connected to the other input terminal of the control logic circuit 33.
It is possible to give an operation instruction to the storage tube 30 and the electronic selector switch 31 without going through the storage tube 30, and furthermore, based on this instruction, the green image of the storage tube 30 is read out by the readout amplifier 35, and the habit is detected. It is designed to be sent to a signal processing device m. 5A to 5G are timing charts of the embodiment shown in FIG. 4, where A is the vertical synchronization signal, B is the shutter opening/closing operation, C is the TV camera output video signal, and D is the video take-out timing. E indicates the output signal of the counter, F indicates the mode of the green screen device, and G indicates the output signal of the green screen device. As the shutter opens and closes, a video signal as shown in FIG. The video signal is sent from the amplifier 28 to the habit detection signal processing device m via the electronic changeover switch 31 and the synchronous synthesis output amplifier 32.

又シャッター開閉作動の数フィールド毎に映像取出しタ
イミング信号が第5図Dに示す如くカウンタ34と同時
に制御ロジック回路33に送られ「 この制御ロジック
回路33よりカウンタ34のフィールドカウントに基づ
き指示信号が蓄積管30と電子式切替スイッチ31に送
られてこの切替スイッチ31が切替わり、これにより蓄
積管30の緑画が読み出し用増幅器35で読み出されて
庇検出用信号処理装置mに送られる。従って第5図Gの
如き信号が癖検出用信号処理装置mに送られることにな
る。第5図G中G^は入力映像、GBは読み出された映
像、Gcは消去期間の映像の信号を夫々示す。上記せる
第4図に示す本発明の実施例において、蓄積管は読み出
し、書き込み、消去を同時にできないので、第5図Gの
Gcの如き映像を挿入できないフィールドが生じていた
が、斯る点を除去できるものが第6図に示す本発明の他
の実施例である。
Also, every few fields of the shutter opening/closing operation, an image retrieval timing signal is sent to the control logic circuit 33 at the same time as the counter 34, as shown in FIG. 5D. The green image in the storage tube 30 is read out by the readout amplifier 35 and sent to the eaves detection signal processing device m. A signal as shown in Fig. 5G is sent to the signal processing device m for habit detection. In the embodiment of the present invention shown in FIG. 4 above, since the storage tube cannot read, write, and erase at the same time, there are fields such as Gc in FIG. 5 in which images cannot be inserted. Another embodiment of the present invention shown in FIG. 6 can eliminate this point.

即ち第6図に示す本発明の実施例は、録画装置を2個の
蓄積管を用いて構成したもので、これら2個の蓄積管を
交互に使うことにより全フィールド‘こ映像を挿入でき
ると共に、蓄積管の消去に充分時間を取り得て蓄積管内
の残像を少なくできるものである。
That is, in the embodiment of the present invention shown in FIG. 6, the recording device is constructed using two storage tubes, and by using these two storage tubes alternately, it is possible to insert images of the entire field. , it is possible to take sufficient time to erase the storage tube and reduce the amount of afterimage inside the storage tube.

詳述する緑画装置のは、第一蓄積管36と第二蓄積管3
7とがシャッター付ビジコンテレピカメラ1に並列接続
されていて映像信号を入力とするようになっていると共
に、両蓄積管36,37が電子式切替スイッチ38を介
し癖検出用信号処理装置mに接続されており「又蓄積管
の消去、書き込み、読み出しの各制御ロジック回路39
がシャッター付ビジコンテレビカメラ1に接続されてい
てこのテレビカメラ1からの映像取出しタイミング信号
と垂直同期信号により適宜作動するようになっており、
更に第一、第二蓄積管36,37及び功替スイッチ38
は制御ロジック回路39に接続され適宜作動するように
なっているものである。
The green drawing device to be described in detail includes the first storage tube 36 and the second storage tube 3.
7 are connected in parallel to the shutter-equipped business television camera 1 to input video signals, and both storage tubes 36 and 37 are connected to the habit detection signal processing device m via an electronic changeover switch 38. It is also connected to the control logic circuit 39 for erasing, writing, and reading the storage tube.
is connected to a vidicon television camera 1 with a shutter, and is activated as appropriate by a video take-out timing signal and a vertical synchronization signal from this television camera 1.
Furthermore, first and second storage pipes 36, 37 and a switching switch 38
is connected to the control logic circuit 39 and operated as appropriate.

第7図A〜Eは第6図に示す実施例のタイミングチャー
トであり、第7図中Aは垂直同期信号、Bはシャッター
の開閉作動、Cは第一蓄積管36のモード、Dは第二蓄
積管37のモード、Eは癖検出用信号処理装置の入力信
号を夫々示す。
7A to 7E are timing charts of the embodiment shown in FIG. 6, where A is a vertical synchronization signal, B is a shutter opening/closing operation, C is a mode of the first storage tube 36, and D is a timing chart of the embodiment shown in FIG. The modes of the two storage tubes 37 and E indicate the input signals of the signal processing device for habit detection, respectively.

シャッター付ビジコンテレビカメラ1から映像信号が、
第一、第二蓄積管36,37に送られると共に、制御ロ
ジック回路39に上記テレビカメラ1から映像取出しタ
イミング信号と垂直同期信号が送られこれらの信号に基
づき第一、第二蓄積管36,37及び電子式切替スイッ
チ38が適宜作動して録画が読み出され癖検出用信号処
理装置mに送られる。従って第7図Eの如き信号が癖検
出用信号処理装置皿こ送られることになる。第7図E中
E,は第一蓄積管36の出力、E2は第こ蓄積管37の
出力の信号を夫々示す。次に前記癖検出用信号処理装置
mについて第8図を参照しつつ説明する。
A video signal is sent from the shutter-equipped business-con television camera 1.
The signal is sent to the first and second storage tubes 36 and 37, and the video take-out timing signal and vertical synchronization signal from the television camera 1 are also sent to the control logic circuit 39, and based on these signals, the first and second storage tubes 36, 37 and electronic changeover switch 38 are activated as appropriate to read out the recording and send it to the habit detection signal processing device m. Therefore, a signal as shown in FIG. 7E is sent to the signal processing device for detecting the habit. In FIG. 7E, E indicates the output signal of the first storage tube 36, and E2 indicates the output signal of the second storage tube 37, respectively. Next, the habit detection signal processing device m will be explained with reference to FIG. 8.

入力信号(映像信号)であるコンポジツト信号から同期
信号を取出す同期分離器40‘こ同期重畳器41を接続
して同期信号を送り得るようにし、又同期分離器40と
サンプルホルダー42を接続し、このサンプルホルダー
42にローパスフイルター43と微分回路44とを並列
接続すると共に、これらローパスフイルタ−43及び微
分回路44をOR回路45に夫々レベル比較器46,4
7を介し接続し、更にOR回路45と前記同期重畳器4
1とモニター48とを順次接続して癖検出用信号処理装
置mを構成する。
A synchronous separator 40' which extracts a synchronous signal from a composite signal which is an input signal (video signal) is connected to a synchronous superimposer 41 so as to be able to send a synchronous signal, and a synchronous separator 40 and a sample holder 42 are connected. A low-pass filter 43 and a differentiating circuit 44 are connected in parallel to this sample holder 42, and the low-pass filter 43 and differentiating circuit 44 are connected to an OR circuit 45 using level comparators 46 and 4, respectively.
7, and further connects to the OR circuit 45 and the synchronous multiplexer 4.
1 and a monitor 48 are sequentially connected to constitute a habit detection signal processing device m.

同期分離器40から映像搬送信号がサンプルホルダー4
2に送られ、このサンプルホルダー42で水平帰線消去
期間(華直帰線消去期間の場合もある。
A video carrier signal is transmitted from the synchronous separator 40 to the sample holder 4.
2, and this sample holder 42 is used for a horizontal blanking period (sometimes a horizontal blanking period).

)の信号が任意にホールドされ映像信号時には入力信号
がそのまま出力して信号の急変が少なくなる。上記サン
プルホルダー42の出力がローパスフイルタ−43に送
られこのフィルター43で高い周波数成分が除かれてレ
ベル比較器46に送られ、この比較器46でしべの高い
部分と低い部分が源として抽出されてOR回路45に送
られると共に、前記サンプルホルダー42の出力が微分
回路44にも送られこの微分回路44で信号の変化割合
の大きい個所、即ち庇の端の部分の信号が強調されてレ
ベル比較器47に送られこの比較器47で波の端部が抽
出されてOR回路45に送られる。このOR回路45で
論理演算され同期重畳器41に送られ、この同期重畳器
41で同期分離器40からの同期信号が復帰して重畳し
、モニター48に送られて渡部のみ強調された画像が写
し出される。この場合にモニター48に送るかわりに、
癖の抽出結果を利用し易い形に信号処理(アナログ、デ
ィジタル)してもよい。尚本発明は、上記実施例にのみ
限定されることなく、本発明の要旨を逸脱しない限り種
々の変更を加え得ることは勿論である。
) is held arbitrarily, and when it is a video signal, the input signal is output as is, reducing sudden changes in the signal. The output of the sample holder 42 is sent to a low-pass filter 43, which removes high frequency components and sent to a level comparator 46, which extracts the high and low parts of the stamens as sources. At the same time, the output of the sample holder 42 is also sent to a differentiating circuit 44, which emphasizes the signal at the portion where the rate of change in the signal is large, that is, the end of the eaves, and increases the level. The signal is sent to a comparator 47, where the end of the wave is extracted and sent to an OR circuit 45. This OR circuit 45 performs a logical operation and sends the signal to the synchronous superimposer 41, where the synchronous signal from the synchronous separator 40 is restored and superimposed, and sent to the monitor 48, where an image in which only Watanabe is emphasized is displayed. Photographed. In this case, instead of sending it to monitor 48,
Signal processing (analog or digital) may be performed to make the habit extraction results easier to use. It goes without saying that the present invention is not limited to the above-mentioned embodiments, and that various changes can be made without departing from the gist of the present invention.

以上述べたように本発明の表面欠陥検出装置は、シャッ
ター付ビジコンテレビカメラで不便用のフィールド‘こ
有効画像を挿入し得るよう構成したので、(l)今まで
無駄に捨てていた時間(フィールド)を有効に使うこと
ができる。
As described above, the surface defect detection device of the present invention is configured so that effective images can be inserted into the inconvenient field of a vidicon television camera with a shutter. ) can be used effectively.

皿 画像の明暗の繰り返しをなくし得て見易くなり信号
判別の容易化を図り得る。
Dish It is possible to eliminate the repetition of brightness and darkness in the image, making it easier to see and distinguishing signals.

側 VTR等の一般に用いられているビデオ機器のレベ
ル合わせを行う場合、従来はオシロスコープ等を用いて
使用フィールドを取出すことにより行っていたのに対し
「このようなことをすることなく容易にレベル合わせを
行うことができる。
When adjusting the level of commonly used video equipment such as a VTR, traditionally it was done by extracting the field to be used using an oscilloscope. It can be performed.

肌 各フレーム内でのレベルの平均を取ることができ、
従ってVTR等のビデオ機器に組込まれ特に信号処理(
癖検出)に不可欠である利得や比較レベルの自動調整回
路(数フィールド以上の映像信号レベルの平均値を求め
以後のフィールドの利得やレベルを調整するもの)を、
容易に組込み使用できる。
Skin Levels within each frame can be averaged,
Therefore, it is incorporated into video equipment such as VTR, especially for signal processing (
The automatic gain and comparison level adjustment circuit (which calculates the average value of the video signal level of several fields or more and adjusts the gain and level of subsequent fields), which is essential for
Can be easily integrated and used.

(v)信号処理及び画像処理を容易且つ確実に行うこと
ができる。
(v) Signal processing and image processing can be performed easily and reliably.

等の優れた効果を発揮する。Demonstrates excellent effects such as

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

第1図、第2図、第4図及び第6図は本発明の表面欠陥
検出装置の種々の実施例を示すブロック図、第3図A〜
E、第5図A〜G及び第7図A〜Eは第2図、第4図及
び第6図に示した本発明の実施例におけるタイミングチ
ャートを夫々示す説明図、第8図は本発明の表面欠陥検
出装置における癖検出用信号処理装置の構成を示すブロ
ック図である。 M・・・・・・高速移動物体、1・・・・・・シャッタ
ー付ビジコンテレビカメラ、0,W”V,W・・…・録
画装置、m…・・・庇検出用信号処理装置。 第2図 第3図 第4図 第1図 第5図 第6図 第7図 第8図
1, 2, 4 and 6 are block diagrams showing various embodiments of the surface defect detection device of the present invention, and FIGS.
5A to 7E are explanatory diagrams showing timing charts in the embodiments of the present invention shown in FIGS. 2, 4, and 6, respectively, and FIG. 8 is an explanatory diagram showing the timing charts of the embodiments of the present invention shown in FIGS. FIG. 2 is a block diagram showing the configuration of a signal processing device for detecting irregularities in the surface defect detection device of FIG. M... High-speed moving object, 1... Vidicon television camera with shutter, 0, W''V, W... Recording device, m... Signal processing device for eaves detection. Figure 2 Figure 3 Figure 4 Figure 1 Figure 5 Figure 6 Figure 7 Figure 8

Claims (1)

【特許請求の範囲】[Claims] 1 数フイールドに1回シヤツターを開閉作動するシヤ
ツター付ビジコンテレビカメラと、このテレビカメラか
らの映像信号のうち特定のフイールド映像のみを録画し
この録画を再成して出力する録画装置と、この録画装置
からの出力を受け疵検出用信号として処理する処理装置
とからなることを特徴とする表面欠陥検出装置。
1. A videocon television camera with a shutter that opens and closes the shutter once every few fields, a recording device that records only a specific field image from the video signal from this television camera, regenerates and outputs this recording, and A surface defect detection device comprising: a processing device that receives an output from the device and processes it as a flaw detection signal.
JP1284878A 1978-02-07 1978-02-07 Surface defect detection device Expired JPS6022735B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1284878A JPS6022735B2 (en) 1978-02-07 1978-02-07 Surface defect detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1284878A JPS6022735B2 (en) 1978-02-07 1978-02-07 Surface defect detection device

Publications (2)

Publication Number Publication Date
JPS54105593A JPS54105593A (en) 1979-08-18
JPS6022735B2 true JPS6022735B2 (en) 1985-06-04

Family

ID=11816806

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1284878A Expired JPS6022735B2 (en) 1978-02-07 1978-02-07 Surface defect detection device

Country Status (1)

Country Link
JP (1) JPS6022735B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0750039B2 (en) * 1988-06-08 1995-05-31 株式会社四国総合研究所 Conveyor belt damage detector

Also Published As

Publication number Publication date
JPS54105593A (en) 1979-08-18

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