JPH0226914B2 - - Google Patents
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- Publication number
- JPH0226914B2 JPH0226914B2 JP58173174A JP17317483A JPH0226914B2 JP H0226914 B2 JPH0226914 B2 JP H0226914B2 JP 58173174 A JP58173174 A JP 58173174A JP 17317483 A JP17317483 A JP 17317483A JP H0226914 B2 JPH0226914 B2 JP H0226914B2
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- difference signal
- composite difference
- composite
- signal
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- 239000002131 composite material Substances 0.000 claims description 43
- 238000005070 sampling Methods 0.000 claims description 29
- 230000033001 locomotion Effects 0.000 claims description 24
- 230000015654 memory Effects 0.000 claims description 12
- 230000000750 progressive effect Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N11/00—Colour television systems
- H04N11/06—Transmission systems characterised by the manner in which the individual colour picture signal components are combined
- H04N11/20—Conversion of the manner in which the individual colour picture signal components are combined, e.g. conversion of colour television standards
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Color Television Systems (AREA)
- Processing Of Color Television Signals (AREA)
Description
【発明の詳細な説明】
技術分野
本発明は、NTSC方式等の飛越走査による映像
信号を順次走査方式の映像信号へ変換する際、映
像信号による画像の動き情報を検出する動き検出
器に関する。TECHNICAL FIELD The present invention relates to a motion detector that detects motion information of an image based on a video signal when converting a video signal based on interlaced scanning such as the NTSC system into a video signal using a progressive scanning system.
背景技術
標準テレビジヨン方式（NTSC方式、SECAM
方式、PAL方式等）においては、輝度信号と色
信号が周波数軸上で重なり合つた複合信号である
ため、従来の周波数分離方式やくし型波分離方
式ではクロスカラーを生じたり、輝度信号の解像
度が水平垂直方向で低下し、良好な画質が得られ
ない。また、これらの方式では飛越走査が採用さ
れており、これに基づき、ラインフリツカ妨害、
ベアリング妨害および、走査線が分離して目視さ
れること等により、映像の画質が劣化する現像を
生じている。Background technology Standard television system (NTSC system, SECAM system)
(PAL, PAL, etc.) is a composite signal in which the luminance signal and chrominance signal overlap on the frequency axis, so conventional frequency separation methods and comb wave separation methods may cause cross colors or the resolution of the luminance signal may deteriorate. The image quality deteriorates in the horizontal and vertical directions, making it impossible to obtain good image quality. In addition, these methods employ interlaced scanning, and based on this, line flicker interference,
Bearing interference and the fact that the scan lines are viewed separately have resulted in a development that degrades the image quality of the image.
この対策としてはフレーム間および走査線間の
相関々係に基づき輝度信号と色信号を分離し、ラ
イン内挿、フイールド内挿により補間信号を求
め、飛越走査の１フイールド期間において、補間
信号を補填のうえ飛越走査の１フレーム分に相当
する順次走査を行なうことが提案され、飛越走査
の映像信号を順次走査方式の映像信号へ変換する
順次走査変換装置が開発されるに至つており、こ
れには、画像の動きを検出する目的上、動き検出
器が用いられる。 As a countermeasure, the luminance signal and color signal are separated based on the correlation between frames and scanning lines, the interpolated signal is obtained by line interpolation and field interpolation, and the interpolated signal is compensated for during one field period of interlaced scanning. Furthermore, it has been proposed to perform sequential scanning corresponding to one frame of interlaced scanning, and a progressive scanning conversion device has been developed to convert an interlaced scanning video signal into a progressive scanning video signal. A motion detector is used for the purpose of detecting the motion of an image.
しかし、従来の動き検出器は、「テレビジヨン
学会技術報告」（TEBS83−４、昭和57年９月27
日発表、P19〜P24）に開示されているとおり、
コアリング回路、弧立点除去回路、差信号補間回
路等により構成されており、構成の複雑化により
高価となる欠点を生じている。 However, the conventional motion detector is
As disclosed on page 19-24)
It is composed of a coring circuit, a vertical point removal circuit, a difference signal interpolation circuit, etc., and has the disadvantage of becoming expensive due to the complicated structure.
また、従来の動き検出器には、飛越走査方式の
複合映像信号から、輝度信号のみのフレーム間差
を示す輝度差信号を抽出して与えねばならず、色
信号成分を除去する目的上低域波器を要し、こ
れによつても、構成の複雑化により高価となる欠
点を招来している。 In addition, in conventional motion detectors, it is necessary to extract and provide a luminance difference signal that indicates the difference between frames only in luminance signals from a composite video signal using an interlaced scanning method. This also has the disadvantage of complicating the structure and increasing the cost.
発明の開示
本発明は、従来のかゝる欠点に鑑みてなされた
ものであり、簡単かつ安価な構成であると共に、
雑音除去作用および色信号成分除去作用を有する
画像の動き情報検出装置を提供する目的のもので
ある。DISCLOSURE OF THE INVENTION The present invention has been made in view of the above drawbacks of the conventional technology, and has a simple and inexpensive configuration, and
The object of the present invention is to provide an image motion information detection device having a noise removal effect and a color signal component removal effect.
この目的を達成するため、本発明においては、
映像走査方式の複合映像信号におけるフレーム間
の差を示す複合差信号が１走査線単位で供給され
ることによつて走査線上の互に隣接する奇数個の
サンプリング点における中心の複合差信号値を抽
出する遅延手段と、これに対して左右の互に対称
的な位置の複合差信号値および、前記走査線の前
位および後位に位置する各走査線上における前記
中心に対応するサンプリング点の各複合差信号値
とを抽出し、これらを加算する第１の加算手段
と、前記前位および後位に位置する各走査線上に
おける前記左右の互に対称的な位置を対応する各
サンプリング点の各複合差信号値を抽出し、これ
らを加算する第２の加算手段と、この第１および
第２加算手段の各出力値および遅延手段の出力値
に対し、係数器を介して重み付け係数を乗じてか
ら加算する第３の加算手段とを設け、この第３加
算手段の加算値により画像の動き情報を検出する
と共に、係数の選定によつて、色信号成分を阻止
する特性の低域波器を形成するものとしてい
る。 In order to achieve this objective, in the present invention,
By supplying a composite difference signal indicating a difference between frames in a composite video signal of a video scanning method in units of one scanning line, the central composite difference signal value at an odd number of sampling points adjacent to each other on a scanning line can be calculated. A delay means to extract, composite difference signal values at mutually symmetrical positions on the left and right with respect to the delay means, and each sampling point corresponding to the center on each scanning line located before and after the scanning line. a first addition means for extracting a composite difference signal value and adding them; and a first addition means for extracting a composite difference signal value and adding them; a second addition means for extracting composite difference signal values and adding them; and a weighting coefficient multiplied by a coefficient unit for each output value of the first and second addition means and the output value of the delay means. A third addition means is provided, and the motion information of the image is detected by the added value of the third addition means, and a low frequency filter having a characteristic of blocking color signal components is provided by selecting coefficients. It is assumed that it will be formed.
したがつて、本発明によれば、放送の受信によ
つて得られる複合映像信号の処理系から簡単かつ
安価な構成により、雑音除去作用と共に色信号成
分除去作用を有する動き検出器が実現でき、かつ
従来のように複合映像信号の処理系からさらに
YC分離を行なつて得る輝度差信号の処理系を介
さずに実現できる。 Therefore, according to the present invention, a motion detector having a noise removing function and a color signal component removing function can be realized with a simple and inexpensive configuration from a processing system of a composite video signal obtained by receiving broadcasting. In addition, from the conventional composite video signal processing system,
This can be realized without using a processing system for the luminance difference signal obtained by performing YC separation.
発明を実施するための最良の形態
以下、実施例を示す図によつて本発明の詳細を
説明する。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be explained in detail with reference to figures showing examples.
第１図は、本発明による動き検出器の一実施例
の使用例を示すブロツク図であり、飛越走査の複
合映像信号より、フレーム間の相関々係に基づき
フイールドから分離した輝度信号YFと、これと
同一のフイールドにおける走査線から走査線間の
相関々係に基づいて分離した輝度信号YLとが与
えられており、これらは、各々が遅延素子１，２
により位相調整を受けてから、係数器３，４によ
り係数KF，KLが乗ぜられたうえ、加算器５にお
いて加算され、順次走査用の輝度信号YRとして
送出される。 FIG . 1 is a block diagram showing an example of the use of an embodiment of the motion detector according to the present invention, in which a luminance signal Y , and a luminance signal Y L separated from the scanning line in the same field based on the correlation between the scanning lines.
After undergoing phase adjustment, the signals are multiplied by coefficients K F and K L by coefficient multipliers 3 and 4, and added by adder 5, and sent out as a luminance signal Y R for sequential scanning.
一方、フレーム間の差を示す複合差信号ΔCが
動き検出器６へ与えられており、同検出器６が複
合差信号ΔCから輝度差信号成分を抽出し、これ
の変化を検出すると検出々力を生じ、これを係数
発生器７へ与えるため、同発生器７が相補的に変
化する係数KF，KLを示す信号を送出し、これに
よつて、係数器３，４により乗ずる係数を制御す
る。 On the other hand, a composite difference signal ΔC indicating the difference between frames is given to the motion detector 6, and the detector 6 extracts a luminance difference signal component from the composite difference signal ΔC and detects a change in the luminance difference signal component. In order to generate and give this to the coefficient generator 7, the generator 7 sends out a signal indicating the coefficients K F and K L that change complementary to each other, and thereby the coefficients to be multiplied by the coefficient units 3 and 4 are Control.
したがつて、映像信号によつて表示される画像
が静止画のとき係数KFを大とし、画像が動画の
とき係数KLを大にすると共に、画像が中間状態
のときには、これに応じて両係数KF，KLの比率
を選定することにより、輝度信号YRの輝度信号
YFとYLとに対する依存度が定められる。 Therefore, when the image displayed by the video signal is a still image, the coefficient K F is set large, when the image is a moving image, the coefficient K L is set large, and when the image is in an intermediate state, the coefficient K F is set large. By selecting the ratio of both coefficients K F and K L , the luminance signal of the luminance signal Y R
The degree of dependence on Y F and Y L is determined.
すなわち、静止画のときはフレーム毎の輝度に
変化がないので、輝度信号YFを輝度信号YRとし
て用いればよいが、動画のときにはフレーム毎の
輝度が変化しており、輝度信号YFを用いると不
正確な結果となるため、輝度信号YLを輝度信号
YRとして用いねばならず、静止画と動画との中
間状態では、動きの程度に応じて輝度信号YFと
YLとを好適な比率により混合することが要求さ
れ、これらの操作を第１図の構成により実現して
いる。 In other words, in the case of a still image, the brightness of each frame does not change, so the brightness signal Y F can be used as the brightness signal Y R , but in the case of a moving image, the brightness of each frame changes, so the brightness signal Y F can be used as the brightness signal Y F. If used, the result will be inaccurate, so the luminance signal Y L is replaced by the luminance signal
In the intermediate state between a still image and a moving image, the luminance signal Y F must be used as Y
It is required to mix Y and L in a suitable ratio, and these operations are realized by the configuration shown in FIG.
なお、係数発生器７には、複数段階のスレシホ
ールドレベルを有し、動き検出器６の検出々力レ
ベルを判別のうえ、これに応じた係数KF，KLを
示す信号を送出するものが用いられる。 Note that the coefficient generator 7 has a plurality of threshold levels, and after determining the detected force level of the motion detector 6, sends a signal indicating the coefficients K F and K L according to the detected force level. things are used.
また、補間輝度信号は、輝度信号YF，YLと同
等の信号に基づき、別途の回路により求められ、
輝度信号YRと共にメモリ等により一旦蓄積され
たうえ、飛越走査に対して倍の走査速度により送
出され、順次走査方式の輝度信号となる。 In addition, the interpolated luminance signal is obtained by a separate circuit based on signals equivalent to the luminance signals Y F and Y L , and
It is temporarily stored in a memory or the like together with the luminance signal YR , and then sent out at twice the scanning speed of interlaced scanning, resulting in a progressive scanning luminance signal.
たゞし、動き検出器６および係数発生器７は、
輝度信号YRを求める回路の制御のみならず、補
間輝度信号を求める回路、順次走査用の色信号を
求める回路等の制御にも用いることができる。 However, the motion detector 6 and the coefficient generator 7 are
It can be used not only to control a circuit that obtains the luminance signal YR , but also to control a circuit that obtains an interpolated luminance signal, a circuit that obtains a color signal for sequential scanning, and the like.
第２図は、本発明の実施例を示すブロツク図で
あり、サンプリングクロツクパルスの１周期分に
相当する遅延を与えるレジスタ２１ａ，２１ｂを
直列に接続し、これらの入力側へ、サンプリング
クロツクに応じてデイジタル化されたフレーム間
の差を示す複合差信号ΔCdが与えられる。また、
飛越走査の走査線１本分の期間（以下、Ｈ）に相
当する遅延を与えるメモリ２２を介し、上述のレ
ジスタ２１ａ，２１ｂと同様のレジスタ２３ａ，
２３ｂへ複合差信号ΔCdが与えられる。そして、
メモリ２２の出力は、メモリ２２と同様のメモリ
２４および、レジスタ２１ａ，２１ｂと同様のレ
ジスタ２５ａ，２５ｂからなる直列回路に接続さ
れ、この直列回路には1H分遅延した複合差信号
ΔCdが与えられる。レジスタ２１ａの入力、レジ
スタ２１ｂの出力、メモリ２４の出力およびレジ
スタ２５ｂの出力値は第２の加算手段を形成する
加算器２６により加算し、かつ、レジスタ２１
ａ，２３ｂの出力、メモリ２２の出力およびレジ
スタ２５ａの出力値は第１の加算手段を形成する
加算器２７により加算される。そして、レジスタ
２３ａの出力と、加算器２６，２７の各出力とに
対し、係数器２８〜３０により係数α，β，γを
乗じた後、第３の加算手段を形成する加算器３１
により総合の加算値を求め、これを検出々力DO
として送出する。したがつて、メモリ２２とレジ
スタ２３ａは後述のサンプルイメージの中心点を
求める遅延手段を形成する。 FIG. 2 is a block diagram showing an embodiment of the present invention, in which registers 21a and 21b that provide a delay corresponding to one cycle of the sampling clock pulse are connected in series, and the sampling clock pulse is connected to their input sides. A composite difference signal ΔC d is provided which indicates the difference between the digitized frames according to . Also,
Registers 23a, similar to the registers 21a, 21b described above,
A composite difference signal ΔC d is applied to 23b. and,
The output of the memory 22 is connected to a series circuit consisting of a memory 24 similar to the memory 22 and registers 25a and 25b similar to the registers 21a and 21b, and a composite difference signal ΔC d delayed by 1H is applied to this series circuit. It will be done. The input of the register 21a, the output of the register 21b, the output of the memory 24, and the output value of the register 25b are added by an adder 26 forming a second addition means, and
The outputs of a and 23b, the output of the memory 22, and the output value of the register 25a are added by an adder 27 forming a first adding means. After the output of the register 23a and each output of the adders 26 and 27 are multiplied by coefficients α, β, and γ by the coefficient multipliers 28 to 30, an adder 31 forming the third addition means
Find the total addition value by
Send as. Therefore, the memory 22 and the register 23a form delay means for determining the center point of the sample image, which will be described later.
このため、メモリ２２，２４の各入出力間には
1H分の時間差ご生じ、レジスタ２１ａ，２１ｂ，
２３ａ，２３ｂ，２５ａ，２５ｂの各入出力間に
は、サンプリングの１周期分に相当する時間差を
生じ、メモリ２２，２４、レジスタ２１ａ，２１
ｂ，２３ａ，２３ｂ，２５ａ，２５ｂの各出力お
よびレジスタ２１ａの入力をP1〜P9と定義すれ
ば、走査線S1〜S3を示す第３図のサンプルイメー
ジの各サンプリング点P1〜P9と対応するものと
なる。 Therefore, there is a gap between each input and output of the memories 22 and 24.
There is a time difference of 1H, registers 21a, 21b,
A time difference corresponding to one sampling period is generated between the input and output of the input and output terminals 23a, 23b, 25a, and 25b.
b, 23a, 23b, 25a, 25b and the input of the register 21a are defined as P 1 to P 9 , then each sampling point P 1 to P 1 of the sample image in FIG. 3 showing the scanning lines S 1 to S 3 It corresponds to P 9 .
したがつて、レジスタ２３ａの出力には、走査
線S2上の互に隣接する奇数個のサンプリング点
P4〜P6中、中心のサンプリング点P5における複
合差信号値が得られ、加算器２７による加算値
は、中心のサンプリング点P5に対して左右の互
に対称的な位置のサンプリング点P4，P6におけ
る各複合差信号値と、走査線S2の前位および後位
に位置する各走査線S1，S3上における、中心のサ
ンプリング点P5と対応するサンプリング点P2，
P8の各複合差信号値との加算値となる。また、
加算器２６の加算出力は、前位および後位の走査
線S1，S3上における、左右の互に対称的な位置の
サンプリング点P4，P6と対応する各サンプリン
グ点P1，P3.P7，P9の各複合差信号値を加算した
値となる。その結果、検出出力DOはこれらに対
し、各個に係数α，β，γを乗じたうえ、加算さ
れるものとなるため、これが、サンプリング点
P5を中心とする水平および垂直方向と、左上方
から右下方および右上方から左下方々向との総合
したサンプリングイメージの画像の動き情報を示
すものとなる。 Therefore, the output of the register 23a contains the odd number of adjacent sampling points on the scanning line S2 .
Among P4 to P6 , a composite difference signal value is obtained at the central sampling point P5 , and the added value by the adder 27 is obtained from sampling points at mutually symmetrical positions on the left and right with respect to the central sampling point P5 . Each composite difference signal value at P 4 and P 6 and the sampling point P 2 corresponding to the central sampling point P 5 on each scanning line S 1 and S 3 located before and after scanning line S 2 ，
This is the addition value of each composite difference signal value of P8 . Also,
The addition output of the adder 26 is the sampling point P 1 , P 6 corresponding to the left and right sampling points P 4 , P 6 at mutually symmetrical positions on the front and rear scanning lines S 1 , S 3 . 3.The value is the sum of the composite difference signal values of P7 and P9 . As a result, the detection output DO is multiplied by the coefficients α, β, and γ and then added, so this is the sampling point.
It shows the image movement information of the integrated sampling image in the horizontal and vertical directions centering on P 5 , from the upper left to the lower right, and from the upper right to the lower left.
たゞし、例えばα＝1/4，β＝1/8，γ＝1/16と
して係数を選定すると、サンプリングクロツクパ
ルスの周波数fSを色副搬送波周波数fSCの４倍とし
たとき、第４図の通過特性が得られ、色副搬送波
周波数fSC近傍以降へ注目すれば、色信号成分を
阻止する特性の低域波器が形成される。したが
つて、検出々力DOには、色信号成分を除去した
輝度差信号値を各サンプリング点P1〜P9につい
て累算した値が得られ、これが画像の動き情報を
示すものになると共に、累算による積分作用によ
り輝度信号中の雑音成分が軽減され、突発的な雑
音による誤検出が阻止される。 However, if the coefficients are selected as, for example, α=1/4, β=1/8, and γ=1/16, then when the sampling clock pulse frequency f S is set to four times the color subcarrier frequency f SC , If the pass characteristic shown in FIG. 4 is obtained and attention is paid to the vicinity of the chrominance subcarrier frequency f SC , a low-pass filter having characteristics that blocks the chrominance signal component is formed. Therefore, the detection power DO is obtained by accumulating the luminance difference signal values from which the color signal components have been removed for each sampling point P 1 to P 9 , and this value indicates the motion information of the image. , noise components in the luminance signal are reduced by the integral action of the accumulation, and false detection due to sudden noise is prevented.
また、視覚上、動きに対して鋭敏な水平方向の
みらざず、垂直および左右の傾斜方向にもサンプ
リング点が配されているため、画像の動き情報を
正確に検出することができる。 Further, since sampling points are arranged not only in the horizontal direction, which is visually sensitive to movement, but also in the vertical and left/right inclined directions, it is possible to accurately detect the movement information of the image.
なお、第２図においては、レジスタおよびメモ
リの代りに、超音波遅延線、CCD等の遅延素子
を用いてもよく、各サンプリング点の数および間
隔は、画面の最大動画領域に応じて定めればよ
い。また、全体をアナログ回路により構成するこ
とも任意であり、所望の特性に応じて係数を選定
すればよい等、種々の変形が可能である。 In Fig. 2, a delay element such as an ultrasonic delay line or CCD may be used instead of the register and memory, and the number and interval of each sampling point are determined according to the maximum moving image area of the screen. Bye. Further, it is also possible to configure the entire circuit with an analog circuit, and various modifications are possible, such as selecting coefficients according to desired characteristics.
第１図は本発明による動き検出器の一実施例の
使用例を示すブロツク図、第２図は本発明の実施
例を示すブロツク図、第３図はサンプリングイメ
ージを走査線上で示す図、第４図は通過特性を示
す図である。
６……動き検出器、２１ａ，２１ｂ，２３ａ，
２３ｂ，２５ａ，２５ｂ……レジスタ、２２，２
４……メモリ、２６，２７，３１……加算器、２
８〜３０……係数器、ΔCd……複合差信号、S1〜
S3……走査線、P1〜P9……サンプリング点、２
２，２３ａ……遅延手段、２７……第１加算手
段、２６……第２加算手段、３１……第３加算手
段。
FIG. 1 is a block diagram showing an example of the use of an embodiment of a motion detector according to the invention, FIG. 2 is a block diagram showing an embodiment of the invention, FIG. 3 is a diagram showing a sampling image on a scanning line, and FIG. FIG. 4 is a diagram showing the transmission characteristics. 6...Motion detector, 21a, 21b, 23a,
23b, 25a, 25b...Register, 22, 2
4...Memory, 26, 27, 31...Adder, 2
8 to 30... Coefficient unit, ΔC d ... Composite difference signal, S 1 to
S3 ...scanning line, P1 to P9 ...sampling point, 2
2, 23a...Delay means, 27...First addition means, 26...Second addition means, 31...Third addition means.
Claims (1)
の映像信号へ変換する際、画像の動き情報を検出
する動き検出器であつて、前記飛越走査方式の複
合映像信号におけるフレーム間の差を示す第１の
複合差信号が１走査線単位で供給されることによ
つて、サンプリングクロツクパルスの１周期であ
る１サンプリング周期の遅延を第１の複合差信号
に与えて第２の複合差信号を出力する第１のレジ
スタ２１ａと、前記１サンプリング周期の遅延を
第２の複合差信号に与えて第３の複合差信号を出
力する第２のレジスタ２１ｂと、飛越走査の走査
線１本分の期間である１走査線期間の遅延を第１
の複合差信号に与えて第４の複合差信号を出力す
る第１のメモリ２２と、前記１サンプリング周期
の遅延を第４の複合差信号に与えて第５の複合差
信号を出力する第３のレジスタ２３ａと、前記１
サンプリング周期の遅延を第５の複合差信号に与
えて第６の複合差信号を出力する第４のレジスタ
２３ｂと、前記１走査線期間の遅延を第４の複合
差信号に与えて第７の複合差信号を出力する第２
のメモリ２４と、前記１サンプリング周期の遅延
を第７の複合差信号に与えて第８の複合差信号を
出力する第５のレジスタ２５ａと、前記１サンプ
リング周期の遅延を第８の複合差信号に与えて第
９の複合差信号を出力する第６のレジスタ２５ｂ
と、第２と第４と第６と第８の複合差信号を加算
する第１の加算手段２７と、第１と第３と第７と
第９の複合差信号を加算する第２の加算手段２６
と、第１および第２の加算手段の各出力値並びに
第５の複合差信号値に対し、各個に係数を乗じて
から加算する第３の加算手段３１とを備え、第３
の加算手段の加算値を前記画像の動き情報として
引き出してなることを特徴とする動き検出器。1 A motion detector for detecting image motion information when converting an interlaced scanning composite video signal into a progressive scanning video signal, and a motion detector that detects the difference between frames in the interlaced scanning composite video signal. By supplying one composite difference signal in units of one scanning line, a delay of one sampling period, which is one period of the sampling clock pulse, is given to the first composite difference signal to generate a second composite difference signal. A first register 21a that outputs a signal, a second register 21b that applies a delay of one sampling period to the second composite difference signal and outputs a third composite difference signal, and a The delay of one scanning line period is the first
a first memory 22 that applies a delay of one sampling period to the fourth composite difference signal and outputs a fourth composite difference signal; and a third memory 22 that applies a delay of one sampling period to the fourth composite difference signal and outputs a fifth composite difference signal. register 23a, and the register 23a of said 1
a fourth register 23b that applies a delay of the sampling period to the fifth composite difference signal to output a sixth composite difference signal; and a fourth register 23b that applies a delay of one scanning line period to the fourth composite difference signal to output a sixth composite difference signal; a second outputting a composite difference signal;
a fifth register 25a that applies a delay of one sampling period to the seventh composite difference signal to output an eighth composite difference signal; a sixth register 25b that outputs a ninth composite difference signal.
a first addition means 27 for adding the second, fourth, sixth and eighth composite difference signals; and a second addition means 27 for adding the first, third, seventh and ninth composite difference signals. Means 26
and a third adding means 31 for multiplying each output value of the first and second adding means and the fifth composite difference signal value by a coefficient and then adding the resultant products.
A motion detector characterized in that the added value of the adding means is extracted as motion information of the image.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58173174A JPS6065696A (en) | 1983-09-21 | 1983-09-21 | Detector of dynamic information of picture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58173174A JPS6065696A (en) | 1983-09-21 | 1983-09-21 | Detector of dynamic information of picture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6065696A JPS6065696A (en) | 1985-04-15 |
| JPH0226914B2 true JPH0226914B2 (en) | 1990-06-13 |
Family
ID=15955460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58173174A Granted JPS6065696A (en) | 1983-09-21 | 1983-09-21 | Detector of dynamic information of picture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6065696A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4661853A (en) * | 1985-11-01 | 1987-04-28 | Rca Corporation | Interfield image motion detector for video signals |
| US4651211A (en) * | 1986-01-17 | 1987-03-17 | Rca Corporation | Video signal motion detecting apparatus |
-
1983
- 1983-09-21 JP JP58173174A patent/JPS6065696A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6065696A (en) | 1985-04-15 |
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