JPH0824371B2 - Color separation device for imaging device - Google Patents

Color separation device for imaging device

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Publication number
JPH0824371B2
JPH0824371B2 JP62014771A JP1477187A JPH0824371B2 JP H0824371 B2 JPH0824371 B2 JP H0824371B2 JP 62014771 A JP62014771 A JP 62014771A JP 1477187 A JP1477187 A JP 1477187A JP H0824371 B2 JPH0824371 B2 JP H0824371B2
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JP
Japan
Prior art keywords
output
color signal
color
component
signal
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 - Lifetime
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JP62014771A
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Japanese (ja)
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JPS63182986A (en
Inventor
博之 武長
博明 杉浦
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Priority to JP62014771A priority Critical patent/JPH0824371B2/en
Publication of JPS63182986A publication Critical patent/JPS63182986A/en
Publication of JPH0824371B2 publication Critical patent/JPH0824371B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、撮像装置における色分離装置に関するも
のである。
The present invention relates to a color separation device in an image pickup device.

〔従来の技術〕[Conventional technology]

第6図は、例えばテレビジョン学会誌Vol.37.No.10
(1983)の834〜835頁に示されている従来の色分離装置
の一構成例であり、図において、1は撮像素子、2は撮
像素子1の出力を増幅する増幅器、3は色信号を取り出
すバンドパスフィルタ、4は1Hディレイ、5は加算器、
6は減算器、7は青成分の信号出力端子、8は赤成分の
信号出力端子、9は色フィルタ、10は輝度信号を取り出
すローパスフィルタである。
Figure 6 shows, for example, the Journal of the Television Society, Vol.37.No.10.
(1983), pp. 834-835, which is an example of the configuration of a conventional color separation device, in which 1 is an image sensor, 2 is an amplifier for amplifying the output of the image sensor 1, and 3 is a color signal. Bandpass filter to take out, 4 1H delay, 5 adder,
6 is a subtractor, 7 is a signal output terminal for a blue component, 8 is a signal output terminal for a red component, 9 is a color filter, and 10 is a low-pass filter for extracting a luminance signal.

次に従来の色分離方式について説明する。撮像素子1
では、色フィルタ9を通った像が撮像される。この色フ
ィルタ配列は第2図に示すような配列で、この色フィル
タ9を通すことにより、第n行(n=2j,jは整数)にお
いては、輝度信号と第1の色成分C1とが多重されて得ら
れ、第n+1行においては、輝度信号と第2の色成分C2
とが多重されて得られる。例えばn行目を例にとると、
2ラインを加算して1つの走査線信号とするので、n行
目の撮像素子1の出力信号Snは、色フィルタ配列の水平
方向の繰り返し周波数ω/2πで空間変調されて次のよ
うになる。
Next, a conventional color separation method will be described. Image sensor 1
Then, the image that has passed through the color filter 9 is captured. This color filter array is as shown in FIG. 2. By passing through this color filter 9, in the nth row (n = 2j, j is an integer), the luminance signal and the first color component C 1 Are obtained by multiplexing, and in the (n + 1) th row, the luminance signal and the second color component C 2
And are obtained by multiplexing. For example, taking the nth row as an example,
Since two lines are added to form one scanning line signal, the output signal S n of the image sensor 1 in the nth row is spatially modulated at the horizontal repetition frequency ω s / 2π of the color filter array and is as follows. become.

(ω=2π/d,d:色フィルタの繰り返し周期) 但し、変調成分は、ωの基本波成分のみを示してあ
る。また、各色フィルタ通過によりn行目に生じる信号
量を、記号Wn,Yen,Cynで表現している。次にn+1行目
の出力信号Sn+1も同様に、 と表される。ここで、 W=G+R+B …(32) Ye=G+R …(33) Cy=G+B …(34) となるので、(30),(31)式は、それぞれ次式のよう
になる。
s = 2π / d, d: repetition period of color filter) However, the modulation component shows only the fundamental wave component of ω s . Further, the signal amount generated in the nth row by passing each color filter is represented by symbols W n , Ye n , and Cy n . Next, for the output signal S n + 1 of the n + 1th row, It is expressed as Here, since W = G + R + B (32) Ye = G + R (33) Cy = G + B (34), the equations (30) and (31) become the following equations, respectively.

これらの出力信号のうち直流成分はローパスフィルタ10
により取り出され、輝度信号Yとなる。
The DC component of these output signals is low-pass filtered.
And is a luminance signal Y.

またω/2πを中心周波数とする変調成分のみをバンド
パスフィルタ3により取り出すと、(35)式,(36)式
に対応してそれぞれ、第1の色成分C1,第2の色成分C2
として、 が得られる。従ってn行目とn+1行目との間に相関が
あれば、Bn=Bn+1,Rn=Rn+1とみなせるから、n行目の
変調色成分Sncを1Hディレイ4で遅延させ、加算器5に
よりn+1行目の変調色成分S(n+1)cと加算すると青成
分のみからなる変調信号Bcが、またSncとS(n+1)cを減算
器6により減算すると赤成分のみからなる変調信号R
cが、それぞれ端子7,8より得られ、色分離されたことに
なる。即ち、 〔発明が解決しようとする問題点〕 従来の色分離方式は、以上のようにして行われるが、
n行目とn+1行目との間に相関がなければ、Bn
Bn+1,Rn≠Rn+1であるから、Rc及びBcを求めた場合、 となり、赤成分の信号の中に青成分が、青成分の信号の
中に赤成分が入り、偽の色信号となる。このように従来
装置においては、垂直相関のない部分では偽の色信号が
発生するなどの問題点があった。
Further, when only the modulation component having a center frequency of ω s / 2π is taken out by the bandpass filter 3, the first color component C 1 and the second color component are respectively corresponding to the equations (35) and (36). C 2
As Is obtained. Thus if there is a correlation between the n-th row and (n + 1) th row, from regarded as B n = B n + 1, R n = R n + 1, the n-th row of the modulated color component S nc with 1H delay 4 When delayed and added by the adder 5 to the modulation color component S (n + 1) c of the n + 1th row, the subtraction unit 6 subtracts the modulation signal B c consisting of only the blue component, and S nc and S (n + 1) c. Modulated signal R consisting of only red component when subtracted by
c is obtained from the terminals 7 and 8, respectively, and is color-separated. That is, [Problems to be Solved by the Invention] The conventional color separation method is performed as described above,
If there is no correlation between the nth row and the n + 1th row, B n
Since B n + 1 and R n ≠ R n + 1 , when R c and B c are obtained, Therefore, the blue component is included in the red component signal, and the red component is included in the blue component signal, resulting in a false color signal. As described above, the conventional device has a problem that a false color signal is generated in a portion having no vertical correlation.

この発明は、上記のような問題点を解消するためにな
されたもので、垂直相関のない部分で、偽の色信号の発
生を防止できる撮像装置の色分離装置を得ることを目的
とする。
The present invention has been made in order to solve the above problems, and an object of the present invention is to obtain a color separation device of an image pickup device capable of preventing generation of a false color signal in a portion having no vertical correlation.

〔問題点を解決するための手段〕[Means for solving problems]

この発明に係る撮像装置の色分離装置は、第n行(n
=2j,jは整数)においては輝度信号と第1の色信号成分
Ci(Ciは色信号成分の量を表わす。i;i=1〜4)とが
多重されて得られ、第n+1行においては輝度信号と第
2の色信号成分C2とが多重されて得られる撮像装置の色
分離装置において、撮像素子の出力信号から輝度信号の
低域成分Y(Yは輝度信号低域成分の信号量を表わす)
を抽出するローパスフィルタと、該ローパスフィルタの
出力を受けて隣接する3行の輝度信号低域成分Y(m,n
−1),Y(m,n),Y(m,n+1)(m;整数,Y(m,k)は第
k行m列目の輝度信号低域成分の信号量を表わす。k;整
数)を同時に出力するための輝度信号出力手段と、上記
撮像素子の出力信号から上記第1,第2の色信号成分C1,C
2を抽出する復調回路と、該復調回路の出力を受けて隣
接する複数行の第1及び第2の色信号成分を同時に出力
するための色信号出力手段と、上記輝度信号出力手段か
らの信号を受けて、下記演算式 |Y(m,n−1)−Y(m,n)|=D1 …(1) |Y(m,n)−Y(m,n+1)|=D2 …(2) |Y(m,n−1)−Y(m,n+1)|=D3 …(3) に基いて上記隣接する3行の輝度信号低域成分の相互の
差D1,D2,D3を検出する差検出手段と、上記差検出結果と
所定のしきい値d1〜d10とを比較する比較手段と、上記
色信号出力手段からの信号を受けて、上記比較結果が、
D1>d1,D2>d2,D3>d3なる第1の条件においては、C
1(m,k)(但し、k=n,Ci(m,k)は第k行m列の第i
の色信号成分の量)のデータの寄与する比率を該第1の
条件以外の場合に比し下げて下記演算式 但し、p,q,r,s;出力したい色信号成分によって決定さ
れる係数、n−2≦k≦n+2;即ち、C1(m,k)に関し
てはkはk=n−2,n,n+2、C2(m,k)に関してはkは
k=n−1,n+1、ak,bk;C1(m,k),C2(m,k)の係数
により出力色信号成分C3(m,n),C4(m,n)を演算し、
D1>d4,D2>d5,D3<d6なる第2の条件においては、予め
均一で絵柄のない無彩色を撮像して得られたY,C1,C2
比率によりY:C1:C2=K1:K2:K3として により出力色信号成分C3(m,n),C4(m,n)を演算し、
D1>d7,D2≦d8なる第3の条件においては、C1(m,k),
C2(m,k)(但し、k≦n−1)のデータの寄与する比
率を該第3の条件以外の場合に比し下げて上記演算式
(4)により出力色信号成分C3(m,n),C4(m,n)を演
算し、D1≦d9,D2>d10なる第4の条件においては、C
1(m,k),C2(m,k)(但し、k≧n+1)のデータの
寄与する比率を該第4の条件以外の場合に比し下げて上
記演算式(4)により出力色信号成分C3(m,n),C
4(m,n)を演算する演算手段とを備えるようにしたもの
である。
A color separation device of an image pickup device according to the present invention includes an n-th row (n
= 2j, j is an integer), the luminance signal and the first color signal component
C i (C i represents the amount of chrominance signal component; i; i = 1 to 4) are multiplexed, and the luminance signal and the second chrominance signal component C 2 are multiplexed in the (n + 1) th row. In the color separation device of the image pickup device obtained as described above, the low-frequency component Y of the luminance signal from the output signal of the image pickup device (Y represents the signal amount of the luminance signal low-frequency component)
And a low-pass component Y (m, n) of three adjacent rows that receive the output of the low-pass filter.
-1), Y (m, n), Y (m, n + 1) (m; integer, Y (m, k) represents the signal amount of the luminance signal low-frequency component at the k-th row and the m-th column. ) Are output simultaneously, and the first and second chrominance signal components C 1 and C from the output signal of the image pickup device.
A demodulation circuit for extracting 2 , a color signal output means for receiving the output of the demodulation circuit and simultaneously outputting the first and second color signal components of a plurality of adjacent rows, and a signal from the luminance signal output means. in response to the following arithmetic expression | Y (m, n-1 ) -Y (m, n) | = D 1 ... (1) | Y (m, n) -Y (m, n + 1) | = D 2 ... (2) | Y (m, n−1) −Y (m, n + 1) | = D 3 (3) Based on (3), the mutual differences D 1 and D 2 of the luminance signal low-frequency components of the three adjacent rows receives the difference detecting means for detecting a D 3, comparison means for comparing the difference detection result with a predetermined threshold value d 1 to d 10, the signal from the color signal output means, the comparison result ,
Under the first condition of D 1 > d 1 , D 2 > d 2 , D 3 > d 3 , C
1 (m, k) (where k = n, C i (m, k) is the i -th row in the k-th row and the m-th column)
The amount of the color signal component) of the data contribution ratio is reduced compared to the case other than the first condition, and However, p, q, r, s; a coefficient determined by the color signal component to be output, n−2 ≦ k ≦ n + 2; that is, for C 1 (m, k), k is k = n−2, n, For n + 2 and C 2 (m, k), k is k = n−1, n + 1, a k , b k ; C 1 (m, k), C 2 (m, k) is the output color signal component C Calculate 3 (m, n) and C 4 (m, n),
Under the second condition of D 1 > d 4 , D 2 > d 5 , D 3 <d 6 , the ratio of Y, C 1 and C 2 obtained in advance by imaging a uniform achromatic color without a pattern As Y: C 1 : C 2 = K 1 : K 2 : K 3 Output color signal components C 3 (m, n) and C 4 (m, n) are calculated by
Under the third condition of D 1 > d 7 , D 2 ≦ d 8 , C 1 (m, k),
C 2 (m, k) (however, k ≦ n−1) data contributing ratio is lowered compared to the case other than the third condition, and the output color signal component C 3 ( m, n) and C 4 (m, n) are calculated, and under the fourth condition that D 1 ≦ d 9 and D 2 > d 10 , C
1 (m, k), C 2 (m, k) (however, k ≧ n + 1) The contribution ratio of the data is reduced compared to the case other than the fourth condition, and the output color is calculated by the above equation (4). Signal component C 3 (m, n), C
The calculation means for calculating 4 (m, n) is provided.

〔作用〕[Action]

この発明においては、上述のように構成したことによ
り、隣接する3行の輝度信号低域成分の差を検出し、こ
れを所定のしきい値と比較して垂直相関のタイプを分類
し、該分類結果により最適な演算方式を選択し、色分類
処理を行う。
According to the present invention, with the above-mentioned configuration, the difference between the luminance signal low-frequency components of three adjacent rows is detected, and this is compared with a predetermined threshold value to classify the type of vertical correlation. The optimum calculation method is selected according to the classification result, and color classification processing is performed.

〔実施例〕〔Example〕

以下、この発明の一実施例を図について説明する。第
1図において、1は撮像素子、9は色フィルタ、2は撮
像素子1の出力を増幅する増幅器、10は輝度信号を取り
出すローパスフィルタ、11は連続する3ラインの情報を
記憶するメモリ、12,13,30は2ラインの差を検出する差
検出回路、14,15,31は比較器、16,17,32は比較器14,15,
31にしきい値を与える端子、34は色成分を取り出す復調
回路、18は連続する5ラインの情報を記憶するメモリ、
20〜23,33は演算回路、19,24は比較器14,15,31の出力パ
ターンにより演算回路の入力又は出力を選択する選択回
路、7は青成分の信号出力端子、8は赤成分の信号出力
端子である。
An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is an image sensor, 9 is a color filter, 2 is an amplifier that amplifies the output of the image sensor 1, 10 is a low-pass filter that extracts a luminance signal, 11 is a memory that stores information of three consecutive lines, 12 , 13, 30 are difference detection circuits for detecting the difference between two lines, 14, 15, 31 are comparators, 16, 17, 32 are comparators 14, 15,
31 is a terminal for giving a threshold value, 34 is a demodulation circuit for extracting color components, 18 is a memory for storing information of 5 consecutive lines,
20 to 23,33 are arithmetic circuits, 19 and 24 are selection circuits for selecting the input or output of the arithmetic circuits according to the output patterns of the comparators 14,15,31, 7 is a signal output terminal for blue component, and 8 is for red component. This is a signal output terminal.

次に動作について説明する。従来と同様の第2図に示
した色フィルタを用いて撮像したときの撮像素子1の出
力は、n行目,n+1行目で前出の(35)及び(36)式の
ようになり、その出力をローパスフィルタ10に通すと
(37)式に示した輝度信号が得られ、この輝度信号はメ
モリ11に入力される。一方、撮像素子1の出力を復調回
路34に通すと(38)式及び(39)式に示す色信号を復調
した信号(第1の色成分C1,第2の色信号成分C2に相
当)が得られ、メモリ18に入力される。メモリ11,メモ
リ18には第3図(a),(b)に示したような各行の信
号が格納される。但し、Y(i,j),CB+R(i,j)(第1
の色成分C1),CB-R(i,j)(第2の色成分C2)はそれ
ぞれ を示す。以下、説明を簡単にするためm列について説明
する。メモリ11からは、出力する行とその上下1行づつ
計3行の輝度信号が出力される。今、例としてn行を出
力する場合を考えると、n−1行,n行,n+1行の3行の
信号が出力されることになり、従ってメモリ11からの出
力はY(m,n−1),Y(m,n),Y(m,n+1)となる。
Next, the operation will be described. The output of the image pickup device 1 when the image is picked up using the color filter shown in FIG. 2 similar to the conventional one is as shown in the equations (35) and (36) at the nth row and the n + 1th row, When the output is passed through the low-pass filter 10, the brightness signal shown in the equation (37) is obtained, and this brightness signal is input to the memory 11. On the other hand, when the output of the image pickup device 1 is passed through the demodulation circuit 34, the color signals shown in the equations (38) and (39) are demodulated (corresponding to the first color component C 1 and the second color signal component C 2) . ) Is obtained and input to the memory 18. The signals of each row as shown in FIGS. 3A and 3B are stored in the memories 11 and 18. However, Y (i, j), C B + R (i, j) (first
The color components C 1 ) and C BR (i, j) (second color component C 2 ) of Indicates. Hereinafter, in order to simplify the description, the m-th column will be described. The memory 11 outputs a total of three luminance signals, one row to be output and one row above and below the row to be output. Considering the case of outputting n rows as an example, signals of three rows of n−1 row, n row, and n + 1 row are output, and therefore the output from the memory 11 is Y (m, n−). 1), Y (m, n), Y (m, n + 1).

そして、差検出回路12により |Y(m,n−1)−Y(m,n)|=D1 …(53) 差検出回路13により |Y(m,n)−Y(m,n+1)|=D2 …(54) 差検出回路30により |Y(m,n−1)−Y(m,n+1)|=D3 …(55) が求められ、適当なしきい値が与えられている比較器1
4,15,31にそれぞれ入力される。端子16,17,32により与
えられる適当なしきい値をそれぞれd1,d2,d3とすると、
入力画像に垂直相関がある場合、D1≒0,D2≒0,D3≒0で
あるから、比較器14,15,31の出力はそれぞれロー(以下
「L」と記す),L,Lとなる。
Then, by the difference detection circuit 12, | Y (m, n−1) −Y (m, n) | = D 1 (53) By the difference detection circuit 13, | Y (m, n) −Y (m, n + 1) | = D 2 (54) The difference detection circuit 30 calculates | Y (m, n-1) -Y (m, n + 1) | = D 3 (55) and gives an appropriate threshold value. Comparator 1
Input to 4,15,31 respectively. If the appropriate threshold values given by terminals 16, 17, and 32 are d 1 , d 2 , and d 3 , respectively,
When the input image has a vertical correlation, D 1 ≈0, D 2 ≈0, D 3 ≈0. Therefore, the outputs of the comparators 14, 15, 31 are low (hereinafter referred to as “L”), L, It becomes L.

一方、垂直相関がない場合は、第4図に示した4つの
パターンに大きく分けられる。即ち、(a)はn−1行
とn行目の境に境界がある場合、(b)はn行の中に境
界がある場合、(c)はn行とn+1行の境に境界があ
る場合、(d)はn行目に線状のパターンがある場合で
ある。この(a)〜(d)の場合、比較器14,15,31の出
力がどのようになるかを調べると、(a)の場合は、差
検出回路12の出力D1はD1≫0,差検出回路13の出力D2はD2
≒0,差検出回路30の出力D3はD3≫0となり、比較器14,1
5,31の出力はハイ(以下「H」と記す),L,Hとなる。同
様に比較器14,15,31の出力は、(b)の時はH,H,H、
(c)の時はL,H,H、(d)の時はH,H,Lとなる。
On the other hand, when there is no vertical correlation, it is roughly divided into the four patterns shown in FIG. That is, (a) has a boundary between the n-1th row and the nth row, (b) has a boundary within the nth row, and (c) has a boundary between the nth row and the n + 1th row. In some cases, (d) is the case where there is a linear pattern in the nth row. In the case of (a) to (d), when the outputs of the comparators 14, 15, 31 are examined, in the case of (a), the output D 1 of the difference detection circuit 12 is D 1 >> 0. Therefore, the output D 2 of the difference detection circuit 13 is D 2
≈ 0, the output D 3 of the difference detection circuit 30 becomes D 3 >> 0, and the comparators 14 and 1
The outputs of 5,31 are high (hereinafter referred to as "H"), L, and H. Similarly, the outputs of the comparators 14, 15, 31 are H, H, H in the case of (b),
In the case of (c), it becomes L, H, H, and in the case of (d), it becomes H, H, L.

メモリ18からは出力する行とその上下2行づつ計5行
の色信号が出力される。今、n行を出力する場合である
から、メモリ18からはCB+R(m,n−2),CB-R(m,n−
1),CB+R(m,n),CB-R(m,n+1),CB+R(m,n+
2)が出力される。そして比較器14,15,31の出力により
演算回路20〜23,33のうちの1つを選択回路19によって
選択し、その出力を演算回路に入力する。
From the memory 18, color signals of a total of 5 lines, that is, the lines to be output and the upper and lower lines, are output. Since it is a case of outputting n rows now, C B + R (m, n−2) and C BR (m, n−) are output from the memory 18.
1), C B + R (m, n), C BR (m, n + 1), C B + R (m, n +)
2) is output. Then, one of the arithmetic circuits 20 to 23, 33 is selected by the selection circuit 19 according to the outputs of the comparators 14, 15, 31 and the output is input to the arithmetic circuit.

まず、比較器14,15,31の出力がL,L,Lの場合、即ち垂
直相関がある場合には、演算回路20に接続される。演算
回路20では次のような演算を行なう。
First, when the outputs of the comparators 14, 15, 31 are L, L, L, that is, when there is vertical correlation, they are connected to the arithmetic circuit 20. The arithmetic circuit 20 performs the following arithmetic operations.

(51),(52)式により(56),(57)式を書きなおす
と、 さらに、n−1行,n行,n+1行の相関があるから、 B(m,n)≒B(m,n−1)≒B(m,n+1) R(m,n)≒B(m,n−1)≒B(m,n+1) となり、 が得られ、端子7,8より青成分及び赤成分の信号がそれ
ぞれ出力される。
Rewriting equations (56) and (57) from equations (51) and (52), Furthermore, since there is a correlation of n−1 rows, n rows, and n + 1 rows, B (m, n) ≈B (m, n−1) ≈B (m, n + 1) R (m, n) ≈B (m , n−1) ≈B (m, n + 1), And the signals of the blue component and the red component are output from the terminals 7 and 8, respectively.

比較器14,15の出力がH,Lの場合、即ち垂直相関のない
第4図(a)の場合には、演算回路21に接続される。演
算回路21では次のような演算を行う。
When the outputs of the comparators 14 and 15 are H and L, that is, when there is no vertical correlation in FIG. 4 (a), they are connected to the arithmetic circuit 21. The arithmetic circuit 21 performs the following arithmetic operations.

(51),(52)式により(60),(61)式を書きなおす
さらに第4図(a)よりわかるように、n行とn+1行
は相関があるから B(m,n)≒B(m,n+1) R(m,n)≒R(m,n+1) となり が得られ、端子7,8より青成分,赤成分の信号がそれぞ
れ出力される。
Rewriting equations (60) and (61) from equations (51) and (52) Further, as can be seen from FIG. 4 (a), there is a correlation between the nth row and the n + 1th row, so that B (m, n) ≈B (m, n + 1) R (m, n) ≈R (m, n + 1) Is obtained, and the signals of the blue component and the red component are output from the terminals 7 and 8, respectively.

比較器14,15の出力がL,Hの場合、即ち垂直相関のない
第4図(c)の場合には、演算回路22に接続される。演
算回路22では次のような演算を行う。
When the outputs of the comparators 14 and 15 are L and H, that is, when there is no vertical correlation in FIG. 4 (c), they are connected to the arithmetic circuit 22. The arithmetic circuit 22 performs the following arithmetic operations.

(51),(52)式により(64),(65)式を書きなおす
さらに第4図(c)よりわかるようにn−1行とn行と
は相関があるから B(m,n−1)≒B(m,n) R(m,n−1)≒R(m,n) となり が得られ、端子7,8より青成分,赤成分がそれぞれ出力
される。
Rewriting equations (64) and (65) from equations (51) and (52) Further, as can be seen from FIG. 4 (c), there is a correlation between the n-1th row and the nth row, so that B (m, n-1) ≈B (m, n) R (m, n-1) ≈R ( m, n) And the blue and red components are output from terminals 7 and 8, respectively.

比較器14,15の出力がH,Hの場合でさらに比較器31の出
力がHの場合、即ち垂直相関のない第4図(b)の場合
には、演算回路23に接続される。演算回路23では次のよ
うな演算を行う。
When the outputs of the comparators 14 and 15 are H and H and the output of the comparator 31 is H, that is, when there is no vertical correlation in FIG. 4 (b), it is connected to the arithmetic circuit 23. The arithmetic circuit 23 performs the following arithmetic operations.

(51),(52)式により(68),(69)式を書きなおす
と、 さらに第4図(b)よりわかるように、n−1行とn−
2行は相関があり、n+1行とn+2行も相関があるか
ら、 B(m,n−1)≒B(m,n−2),R(m,n−1)≒R(m,n
−2) B(m,n+1)≒B(m,n+2),R(m,n+1)≒R(m,n
+2) となり が得られ、端子7,8より青成分,赤成分が出力される。
Rewriting equations (68) and (69) from equations (51) and (52), Further, as can be seen from FIG. 4 (b), n-1 rows and n-
The two rows are correlated and the n + 1 row and the n + 2 row are also correlated, so that B (m, n-1) ≈B (m, n-2), R (m, n-1) ≈R (m, n
-2) B (m, n + 1) ≈B (m, n + 2), R (m, n + 1) ≈R (m, n
+2) and Is obtained, and the blue and red components are output from terminals 7 and 8.

比較器14,15の出力がH,Hでさらに比較器31の出力がL
の場合、即ち第4図(d)の場合には、演算回路33が選
択される。演算回路33では次のような演算を行なう。均
一で絵柄のない無彩色を撮像した場合のY,C1,C2の比率
をY:C1:C2=K1:K2:K3とする。
The outputs of comparators 14 and 15 are H and H, and the output of comparator 31 is L
In the case of, that is, in the case of FIG. 4 (d), the arithmetic circuit 33 is selected. The arithmetic circuit 33 performs the following arithmetic operation. The ratio of Y, C 1 and C 2 when a uniform achromatic color without a picture is picked up is Y: C 1 : C 2 = K 1 : K 2 : K 3 .

この演算の結果得られるC3(m,n),C4(m,n)は無彩
色に対応した量となるが、第4図(d)のように細いパ
ターンは無彩色となっても偽色となるよりはよい。
Although C 3 (m, n) and C 4 (m, n) obtained as a result of this calculation are amounts corresponding to achromatic colors, even if a thin pattern as shown in FIG. 4 (d) becomes achromatic colors, Better than false colors.

このように本実施例によれば、入力画像の垂直相関の
有無により各種のパターンに分け、色分離処理を行うの
で、偽色信号の少ない高品位なカラー画像が得られる。
なお、第n+1行目についても上記第n行目の実施例と
同様にして色分離処理を行う。
As described above, according to the present embodiment, the input image is divided into various patterns according to the presence or absence of vertical correlation and color separation processing is performed, so that a high-quality color image with few false color signals can be obtained.
The color separation processing is performed on the (n + 1) th row in the same manner as in the nth row.

なお、上記実施例では、隣接する行を同時に出力する
ためにメモリ11及びメモリ18を用いたが、第1図の破線
の部分を第5図に示すように1Hディレイ40〜46を用いて
構成してもよい。
In the above embodiment, the memory 11 and the memory 18 are used to output the adjacent rows at the same time. However, the broken line portion of FIG. 1 is configured by using 1H delays 40 to 46 as shown in FIG. You may.

また、上記実施例では各比較器におけるしきい値を、
各条件において同一のd1,d2,d3としたが、これは各条件
毎にそれぞれのしきい値を変更するようにしてもよく、
これによれば、さらに精度の良い色分離処理(垂直相関
のない場合のパターンの判定)を行うことができる。
In the above embodiment, the threshold value in each comparator is
The same d 1 , d 2 and d 3 are used in each condition, but the threshold value may be changed for each condition.
According to this, it is possible to perform more accurate color separation processing (pattern determination when there is no vertical correlation).

また上記実施例では、例えばD1>d1,D2>d2,D3>d3
る条件(第4図(b))においては、CB+R(m,n),C
B-R(m,n)のデータを全く使用しないこと、即ちこのデ
ータの寄与する比率を0としたが((68)式参照)、こ
れはCB+R(m,n),CB-R(m,n)のデータの寄与する比率
を他の条件の場合に比し下げるようにしてもよい。この
ことは他の条件(第4図(a),(c))の場合につい
ても同様である。
Further, in the above embodiment, for example, under the condition of D 1 > d 1 , D 2 > d 2 , D 3 > d 3 (FIG. 4 (b)), C B + R (m, n), C
Although the data of BR (m, n) is not used at all, that is, the contribution ratio of this data is set to 0 (see the equation (68)), this is C B + R (m, n), C BR (m , n) may contribute to a lower ratio than other conditions. This also applies to other conditions (FIGS. 4 (a) and 4 (c)).

ところで上記実施例における各演算回路の演算式を一
般化すると、 と表現でき、上記実施例ではC1をB+R,C2をB−R,C3
B,C4をRとし、各係数をそれぞれp=1/2,q=1/2,r=1/
2,s=−1/2としたが、これは色フィルタの配列を変更し
て、C1,C2をそれぞれR+B,R−Bとし、p=1/2,q=−1
/2,r=1/2,s=1/2として、C3,C4をそれぞれB,Rとしても
よい。また同様に、C1,C2をそれぞれB,Rとし、p=1,q
=0,r=0,s=1として、C3,C4をそれぞれB,Rとしてもよ
く、又C1,C2をそれぞれB−Y,R−Yとし、p=1,q=0,r
=0,s=1として、C3,C4をそれぞれB−Y,R−Yとして
も、さらにC1,C2をそれぞれB−1/2G,R−1/2G(G:色信
号の緑色成分)とし、p=1,q=0,r=0,s=1として、C
3,C4をそれぞれB−1/2G,R−1/2Gとしてもよい。
By the way, generalizing the arithmetic expression of each arithmetic circuit in the above embodiment, In the above embodiment, C 1 is B + R, C 2 is B−R, C 3 is
B and C 4 are R, and each coefficient is p = 1/2, q = 1/2, r = 1 /
2, s = -1 / 2 and the, this is by changing the arrangement of color filters, a C 1, C 2 respectively and R + B, R-B, p = 1/2, q = -1
With / 2, r = 1/2 and s = 1/2, C 3 and C 4 may be B and R, respectively. Similarly, let C 1 and C 2 be B and R, respectively, and p = 1, q
= 0, r = 0, s = 1, C 3 and C 4 may be B and R, respectively, and C 1 and C 2 may be BY and RY, respectively, and p = 1 and q = 0. , r
= 0, s = 1 and C 3 and C 4 are BY and RY respectively, C 1 and C 2 are respectively B-1 / 2G and R-1 / 2G (G: color signal Green component), p = 1, q = 0, r = 0, s = 1, and C
3, C 4 each B-1 / 2G, it may be R-1 / 2G.

〔発明の効果〕〔The invention's effect〕

以上のように、この発明に係る撮像装置の色分離装置
によれば、第n行(n=2j,jは整数)においては輝度信
号と第1の色信号成分C1(Ciは色信号成分の量を表わ
す。i;i=1〜4)とが多重されて得られ、第n+1行
においては輝度信号と第2の色信号成分C2とが多重され
て得られる撮像装置の色分離装置において、撮像素子の
出力信号から輝度信号の低域成分Y(Yは輝度信号低域
成分の信号量を表わす)を抽出するローパスフィルタ
と、該ローパスフィルタの出力を受けて隣接する3行の
輝度信号低域成分Y(m,n−1),Y(m,n),Y(m,n+
1)(m;整数,Y(m,k)は第k行m列目の輝度信号低域
成分の信号量を表わす。k;整数)を同時に出力するため
の輝度信号出力手段と、上記撮像素子の出力信号から上
記第1,第2の色信号成分C1,C2を抽出する復調回路と、
該復調回路の出力を受けて隣接する複数行の第1及び第
2の色信号成分を同時に出力するための色信号出力手段
と、上記輝度信号出力手段からの信号を受けて、下記演
算式 |Y(m,n−1)−Y(m,n)|=D1 …(1) |Y(m,n)−Y(m,n+1)|=D2 …(2) |Y(m,n−1)−Y(m,n+1)|=D3 …(3) に基いて上記隣接する3行の輝度信号低域成分の相互の
差D1,D2,D3を検出する差検出手段と、上記差検出結果と
所定のしきい値d1〜d10とを比較する比較手段と、上記
色信号出力手段からの信号を受けて、上記比較結果が、
D1>d1,D2>d2,D3>d3なる第1の条件においては、C
1(m,k)(但し、k=n,Ci(m,k)は第k行m列の第i
の色信号成分の量)のデータの寄与する比率を該第1の
条件以外の場合に比し下げて下記演算式 但し、p,q,r,s;出力したい色信号成分によって決定さ
れる係数、n−2≦k≦n+2;即ち、C1(m,k)に関し
てはkはk=n−2,n,n+2、C2(m,k)に関してはkは
k=n−1,n+1、ak,bk;C1(m,k),C2(m,k)の係数
により出力色信号成分C3(m,n),C4(m,n)を演算し、
D1>d4,D2>d5,D3<d6なる第2の条件においては、予め
均一で絵柄のない無彩色を撮像して得られたY,C1,C2
比率によりY:C1:C2=K1:K2:K3として により出力色信号成分C3(m,n),C4(m,n)を演算し、
D1>d7,D2≦d8なる第3の条件においては、C1(m,k),
C2(m,k)(但し、k≦n−1)のデータの寄与する比
率を該第3の条件以外の場合に比し下げて上記演算式
(4)により出力色信号成分C3(m,n),C4(m,n)を演
算し、D1≦d9,D2>d10なる第4の条件においては、C
1(m,k),C2(m,k)(但し、k≧n+1)のデータの
寄与する比率を該第4の条件以外の場合に比し下げて上
記演算式(4)により出力色信号成分C3(m,n),C
4(m,n)を演算する演算手段とを備え、隣接する3行の
輝度信号の差を検出し、これを所定のしきい値と比較し
て、入力画像の垂直相関のある場合と垂直相関のない場
合4パターンの計5パターンに分けて色分離処理を行う
ようにしたので、偽色信号の少ない高品位なカラー画像
が得られるという効果がある。
As described above, according to the color separation device of the image pickup device of the present invention, in the n-th row (n = 2j, j is an integer), the luminance signal and the first color signal component C 1 (C i is the color signal). I; i = 1 to 4) are multiplexed, and in the (n + 1) th row, the luminance signal and the second chrominance signal component C 2 are multiplexed to obtain the color separation of the imaging device. In the apparatus, a low-pass filter that extracts a low-frequency component Y of a luminance signal (Y represents a signal amount of the luminance-signal low-frequency component) from an output signal of an image sensor, and an output of the low-pass filter, and adjacent three rows Luminance signal low frequency components Y (m, n-1), Y (m, n), Y (m, n +
1) (m; integer, Y (m, k) represents the signal amount of the luminance signal low-frequency component at the k-th row and the m-th column. K; integer), and a luminance signal output means for simultaneously outputting A demodulation circuit for extracting the first and second color signal components C 1 and C 2 from the output signal of the element,
Color signal output means for receiving the output of the demodulation circuit and simultaneously outputting the first and second color signal components of a plurality of adjacent rows, and a signal from the luminance signal output means, and the following arithmetic expression | Y (m, n-1) -Y (m, n) | = D 1 ... (1) | Y (m, n) -Y (m, n + 1) | = D 2 ... (2) | Y (m, n−1) −Y (m, n + 1) | = D 3 (3) Based on (3), the difference detection for detecting the mutual differences D 1 , D 2 , D 3 of the luminance signal low-frequency components of the three adjacent rows means, comparison means for comparing the difference detection result with a predetermined threshold value d 1 to d 10, receives a signal from the color signal output means, the comparison result,
Under the first condition of D 1 > d 1 , D 2 > d 2 , D 3 > d 3 , C
1 (m, k) (where k = n, C i (m, k) is the i -th row in the k-th row and the m-th column)
The amount of the color signal component) of the data contribution ratio is reduced compared to the case other than the first condition, and However, p, q, r, s; a coefficient determined by the color signal component to be output, n−2 ≦ k ≦ n + 2; that is, for C 1 (m, k), k is k = n−2, n, For n + 2 and C 2 (m, k), k is k = n−1, n + 1, a k , b k ; C 1 (m, k), C 2 (m, k) is the output color signal component C Calculate 3 (m, n) and C 4 (m, n),
Under the second condition of D 1 > d 4 , D 2 > d 5 , D 3 <d 6 , the ratio of Y, C 1 and C 2 obtained in advance by imaging a uniform achromatic color without a pattern As Y: C 1 : C 2 = K 1 : K 2 : K 3 Output color signal components C 3 (m, n) and C 4 (m, n) are calculated by
Under the third condition of D 1 > d 7 , D 2 ≦ d 8 , C 1 (m, k),
C 2 (m, k) (however, k ≦ n−1) data contributing ratio is lowered compared to the case other than the third condition, and the output color signal component C 3 ( m, n) and C 4 (m, n) are calculated, and under the fourth condition that D 1 ≦ d 9 and D 2 > d 10 , C
1 (m, k), C 2 (m, k) (however, k ≧ n + 1) The contribution ratio of the data is reduced compared to the case other than the fourth condition, and the output color is calculated by the above equation (4). Signal component C 3 (m, n), C
4 (m, n) is calculated, the difference between the luminance signals of three adjacent rows is detected, and this is compared with a predetermined threshold value to compare the case where there is vertical correlation with the input image and the case where there is vertical correlation. When there is no correlation, the color separation process is performed by dividing the pattern into a total of 5 patterns of 4 patterns, so that a high-quality color image with few false color signals can be obtained.

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

第1図はこの発明の一実施例による色分離装置を示すブ
ロック図、第2図はこの発明の一実施例及び従来例に用
いた色フィルタを示す図、第3図はこの発明の一実施例
において色信号及び輝度信の各行がメモリに格納されて
いる様子を示す図、第4図はこの発明で分類した垂直相
関のない場合の4つのパターンを示す図、第5図はこの
発明の他の実施例を示す図、第6図は従来の色分離装置
の一例を示す図である。 1……撮像素子、7,8……信号出力端子、9……色フィ
ルタ、10……ローパスフィルタ、11,18……メモリ、12,
13,30……差検出回路、14,15,31……比較器、16,17,32
……しきい値入力端子、19,24……選択回路、20〜23,33
……演算回路、34……復調回路。 なお図中同一符号は同一又は相当部分を示す。
FIG. 1 is a block diagram showing a color separation device according to an embodiment of the present invention, FIG. 2 is a diagram showing a color filter used in an embodiment of the present invention and a conventional example, and FIG. 3 is an embodiment of the present invention. In the example, each row of the color signal and the luminance signal is stored in the memory, FIG. 4 is a diagram showing four patterns classified by the present invention when there is no vertical correlation, and FIG. FIG. 6 is a diagram showing another embodiment, and FIG. 6 is a diagram showing an example of a conventional color separation device. 1 ... Image sensor, 7,8 ... Signal output terminal, 9 ... Color filter, 10 ... Low pass filter, 11,18 ... Memory, 12,
13,30 …… Difference detection circuit, 14,15,31 …… Comparator, 16,17,32
...... Threshold input terminal, 19,24 …… Selection circuit, 20 to 23,33
...... Calculation circuit, 34 …… Demodulation circuit. The same reference numerals in the drawings indicate the same or corresponding parts.

Claims (8)

【特許請求の範囲】[Claims] 【請求項1】第n行(n=2j,jは整数)においては輝度
信号と第1の色信号成分C1(C1は色信号成分の量を表わ
す。i;i=1〜4)とが多重されて得られ、第n+1行
においては輝度信号と第2の色信号成分C2とが多重され
て得られる撮像装置の色分離装置において、 撮像素子の出力信号から輝度信号の低域成分Y(Yは輝
度信号低域成分の信号量を表わす)を抽出するローパス
フィルタと、 該ローパスフィルタの出力を受けて隣接する3行の輝度
信号低域成分Y(m,n−1),Y(m,n),Y(m,n+1)
(m;整数,Y(m,k)は第k行m列目の輝度信号低域成分
の信号量を表わす。k;整数)を同時に出力するための輝
度信号出力手段と、 上記撮像素子の出力信号から上記第1,第2の色信号成分
C1,C2を抽出する復調回路と、 該復調回路の出力を受けて隣接する複数行の第1及び第
2の色信号成分を同時に出力するための色信号出力手段
と、 上記輝度信号出力手段からの信号を受けて、下記演算式 |Y(m,n−1)−Y(m,n)|=D1 …(1) |Y(m,n)−Y(m,n+1)|=D2 …(2) |Y(m,n−1)−Y(m,n+1)|=D3 …(3) に基いて上記隣接する3行の輝度信号低域成分の相互の
差D1,D2,D3を検出する差検出手段と、 上記差検出結果と所定のしきい値d1〜d10とを比較する
比較手段と、 上記色信号出力手段からの信号を受けて、上記比較結果
が、 D1>d1,D2>d2,D3>d3なる第1の条件においては、C
1(m,k)(但し、k=n,Ci(m,k)は第k行m列の第i
の色信号成分の量)のデータの寄与する比率を該第1の
条件以外の場合に比し下げて下記演算式 但し、p,q,r,s;出力したい色信号成分によって決定され
る係数 n−2≦k≦n+2;即ち、C1(m,k)に関してはkはk
=n−2,n,n+2、C2(m,k)に関してはkはk=n−1,
n+1 ak,bk;C1(m,k),C2(m,k)の係数 により出力色信号成分C3(m,n),C4(m,n)を演算し、 D1>d4,D2>d5,D3<d6なる第2の条件においては、予め
均一で絵柄のない無彩色を撮像して得られたY,C1,C2
比率によりY:C1:C2=K1:K2:K3として により出力色信号成分C3(m,n),C4(m,n)を演算し、 D1>d7,D2≦d8なる第3の条件においては、C1(m,k),
C2(m,k)(但し、k≦n−1)のデータの寄与する比
率を該第3の条件以外の場合に比し下げて上記演算式
(4)により出力色信号成分C3(m,n),C4(m,n)を演
算し、 D1≦d9,D2>d10なる第4の条件においては、C1(m,
k),C2(m,k)(但し、k≧n+1)のデータの寄与す
る比率を該第4の条件以外の場合に比し下げて上記演算
式(4)により出力色信号成分C3(m,n),C4(m,n)を
演算する演算手段とを備えたことを特徴とする撮像装置
の色分離装置。
1. A luminance signal and a first color signal component C 1 (C 1 represents the amount of the color signal component, i; i = 1 to 4) in the nth row (n = 2j, j is an integer). In the color separation device of the image pickup device obtained by multiplexing the luminance signal and the second color signal component C 2 in the (n + 1) th row. A low-pass filter for extracting a component Y (Y represents the signal amount of the luminance signal low-frequency component), and a luminance signal low-frequency component Y (m, n-1) of three adjacent rows receiving the output of the low-pass filter, Y (m, n), Y (m, n + 1)
(M; integer, Y (m, k) represents the signal amount of the low-frequency component of the luminance signal at the k-th row and the m-th column. K; an integer), and a luminance signal output means for simultaneously outputting From the output signal, the first and second color signal components
A demodulation circuit for extracting C 1 and C 2 , a color signal output means for receiving the outputs of the demodulation circuit and simultaneously outputting the first and second color signal components of a plurality of adjacent rows, and the luminance signal output In response to the signal from the means, the following arithmetic expression | Y (m, n−1) −Y (m, n) | = D 1 (1) | Y (m, n) −Y (m, n + 1) | = D 2 (2) | Y (m, n−1) −Y (m, n + 1) | = D 3 (3) Based on the above, the difference D between the luminance signal low-frequency components of the three adjacent rows is 1, the difference detecting means for detecting a D 2, D 3, comparison means for comparing the difference detection result with a predetermined threshold value d 1 to d 10, receives a signal from the color signal output means, Under the first condition that the comparison result is D 1 > d 1 , D 2 > d 2 , D 3 > d 3 , C
1 (m, k) (where k = n, C i (m, k) is the i -th row in the k-th row and the m-th column)
The amount of the color signal component) of the data contribution ratio is reduced compared to the case other than the first condition, and However, p, q, r, s; coefficient determined by the color signal component to be output n−2 ≦ k ≦ n + 2; that is, k is k for C 1 (m, k)
= N−2, n, n + 2, and for C 2 (m, k), k is k = n−1,
n + 1 a k , b k ; Output color signal components C 3 (m, n) and C 4 (m, n) are calculated by the coefficients of C 1 (m, k) and C 2 (m, k), and D 1 Under the second condition of> d 4 , D 2 > d 5 , D 3 <d 6 , Y: C 1 , C 2 obtained in advance by imaging a uniform achromatic color with no pattern Y: As C 1 : C 2 = K 1 : K 2 : K 3 Output color signal component C 3 by (m, n), C 4 (m, n) is calculated, and in a third condition that D 1> d 7, D 2 ≦ d 8 is, C 1 (m, k) ,
The ratio of the data of C 2 (m, k) (where k ≦ n−1) contributing to the output color signal component C 3 ( m, n) and C 4 (m, n) are calculated, and under the fourth condition of D 1 ≦ d 9 , D 2 > d 10 , C 1 (m,
k), C 2 (m, k) (however, k ≧ n + 1), the ratio of contribution of data is reduced compared to the case other than the fourth condition, and the output color signal component C 3 A color separation device for an image pickup device, comprising: a calculation unit that calculates (m, n) and C 4 (m, n).
【請求項2】上記演算手段は、 上記比較結果が上記第1〜第4の条件のいずれでもない
ときは、 により出力色信号成分C3(m,n),C4(m,n)を演算し、 上記第1の条件のときは、 により出力色信号成分C3(m,n),C4(m,n)を演算し、 上記第2の条件のときは、 により出力色信号成分C3(m,n),C4(m,n)を演算し、 上記第3の条件のときは、 により出力色信号成分C3(m,n),C4(m,n)を演算し、 上記第4の条件のときは、 により出力色信号成分C3(m,n),C4(m,n)を演算する
ものであることを特徴とする特許請求の範囲第1項記載
の撮像装置の色分離装置。
2. The calculation means, when the comparison result is not one of the first to fourth conditions, Output color signal components C 3 (m, n) and C 4 (m, n) are calculated by The output color signal components C 3 (m, n) and C 4 (m, n) are calculated by, and under the second condition above, The output color signal components C 3 (m, n) and C 4 (m, n) are calculated by the following, and in the case of the above third condition, Output color signal components C 3 (m, n) and C 4 (m, n) are calculated by The color separation device for an image pickup device according to claim 1, wherein the output color signal components C 3 (m, n) and C 4 (m, n) are calculated by the following equation.
【請求項3】上記比較手段のしきい値を、それぞれ d1=d4=d7=d9 …(11) d2=d5=d8=d10 …(12) d3=d6 …(13) としたことを特徴とする特許請求の範囲第1項又は第2
項記載の撮像装置の色分離装置。
3. The threshold values of the comparing means are set to d 1 = d 4 = d 7 = d 9 (11) d 2 = d 5 = d 8 = d 10 (12) d 3 = d 6 respectively. (13) Claims 1 or 2 characterized in that
The color separation device of the imaging device according to the item.
【請求項4】上記第1,第2の色信号成分C1,C2はそれぞ
れB+R(B;色信号の青色成分,R;色信号の赤色成分),
B−Rであり、 上記出力色信号成分C3,C4はそれぞれB,Rであり、 上記各係数はそれぞれp=1/2,q=1/2,r=1/2,s=−1/2
であることを特徴とする特許請求の範囲第1項ないし第
3項のいずれかに記載の撮像装置の色分離装置。
4. The first and second color signal components C 1 and C 2 are respectively B + R (B; blue component of color signal, R; red component of color signal),
B−R, the output color signal components C 3 and C 4 are B and R, respectively, and the coefficients are p = 1/2, q = 1/2, r = 1/2, s = −, respectively. 1/2
The color separation device for an image pickup device according to any one of claims 1 to 3, wherein
【請求項5】上記第1,第2の色信号成分C1,C2はそれぞ
れR+B,R−Bであり、 上記出力色信号成分C3,C4はそれぞれB,Rであり、 上記各係数はそれぞれp=1/2,q=−1/2,r=1/2,s=1/2
であることを特徴とする特許請求の範囲第1項ないし第
3項のいずれかに記載の撮像装置の色分離装置。
5. The first and second color signal components C 1 and C 2 are R + B and RB, respectively, and the output color signal components C 3 and C 4 are B and R, respectively. Coefficients are p = 1/2, q = -1 / 2, r = 1/2, s = 1/2
The color separation device for an image pickup device according to any one of claims 1 to 3, wherein
【請求項6】上記第1,第2の色信号成分C1,C2はそれぞ
れB,Rであり、 上記出力信号成分C3,C4はそれぞれB,Rであり、 上記各係数はそれぞれp=1,q=0,r=0,s=1であるこ
とを特徴とする特許請求の範囲第1項ないし第3項のい
ずれかに記載の撮像装置の色分離装置。
6. The first and second color signal components C 1 and C 2 are B and R, the output signal components C 3 and C 4 are B and R, and the coefficients are The color separation device for an image pickup device according to any one of claims 1 to 3, wherein p = 1, q = 0, r = 0, s = 1.
【請求項7】上記第1,第2の色信号成分C1,C2はそれぞ
れB−Y,R−Yであり、 上記出力色信号成分C3,C4はそれぞれB−Y,R−Yであ
り、 上記各係数はそれぞれp=1,q=0,r=0,s=1であるこ
とを特徴とする特許請求の範囲第1項ないし第3項のい
ずれかに記載の撮像装置の色分離装置。
7. The first and second color signal components C 1 and C 2 are BY and RY, respectively, and the output color signal components C 3 and C 4 are BY and R-, respectively. Y, and the respective coefficients are p = 1, q = 0, r = 0, s = 1, respectively, The imaging device according to any one of claims 1 to 3. Color separation device.
【請求項8】上記第1,第2の色信号成分C1,C2はそれぞ
れB−1/2G,R−1/2G(G:色信号の緑色成分)であり、 上記出力色信号成分C3,C4はそれぞれB−1/2G,R−1/2G
であり、 上記各係数はそれぞれp=1,q=0,r=0,s=1であるこ
とを特徴とする特許請求の範囲第1項ないし第3項のい
ずれかに記載の撮像装置の色分離装置。
8. The first and second color signal components C 1 and C 2 are B-1 / 2G and R-1 / 2G (G: green component of the color signal), respectively, and the output color signal component is C 3 and C 4 are B-1 / 2G and R-1 / 2G respectively
And the respective coefficients are p = 1, q = 0, r = 0, s = 1, respectively, in the imaging device according to any one of claims 1 to 3. Color separation device.
JP62014771A 1987-01-23 1987-01-23 Color separation device for imaging device Expired - Lifetime JPH0824371B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62014771A JPH0824371B2 (en) 1987-01-23 1987-01-23 Color separation device for imaging device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62014771A JPH0824371B2 (en) 1987-01-23 1987-01-23 Color separation device for imaging device

Publications (2)

Publication Number Publication Date
JPS63182986A JPS63182986A (en) 1988-07-28
JPH0824371B2 true JPH0824371B2 (en) 1996-03-06

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Country Link
JP (1) JPH0824371B2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02122786A (en) * 1988-10-31 1990-05-10 Nec Home Electron Ltd Color separating device

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Publication number Publication date
JPS63182986A (en) 1988-07-28

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