JPH01169886U - - Google Patents
Info
- Publication number
- JPH01169886U JPH01169886U JP6720288U JP6720288U JPH01169886U JP H01169886 U JPH01169886 U JP H01169886U JP 6720288 U JP6720288 U JP 6720288U JP 6720288 U JP6720288 U JP 6720288U JP H01169886 U JPH01169886 U JP H01169886U
- Authority
- JP
- Japan
- Prior art keywords
- image signal
- primary color
- signal
- color image
- colors
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Color Image Communication Systems (AREA)
Description
第１図は本考案の画像信号変換回路の実施例を
示すブロツク図、第２図はカラー撮影時の光源の
黒体放射の分光特性を示すグラフ、第３図はビデ
オカメラの撮像素子の分光感度特性を示すグラフ
、第４図はビデオカメラのダイクロイツクフイル
タの分光透過特性を示すグラフである。
１，４……入力端子、２，５，７……出力端子
、３，６……反転回路、８……加算回路、９……
選択回路、１０……変換部。
Fig. 1 is a block diagram showing an embodiment of the image signal conversion circuit of the present invention, Fig. 2 is a graph showing the spectral characteristics of black body radiation of a light source during color photography, and Fig. 3 is a spectral diagram of an image sensor of a video camera. A graph showing sensitivity characteristics. FIG. 4 is a graph showing spectral transmission characteristics of a dichroic filter of a video camera. 1, 4... Input terminal, 2, 5, 7... Output terminal, 3, 6... Inverting circuit, 8... Adding circuit, 9...
Selection circuit, 10...conversion section.
Claims (1)
３原色画像信号に信号変換する画像信号変換回路
において、前記加法混色性の３原色画像信号のう
ち、最も信号対雑音比の悪い１色分の画像信号を
除外し、残りの２色分の画像信号のみを用いて前
記減法混色性の３原色画像信号への信号変換を行
なう変換部を有することを特徴とする画像信号変
換回路。 In an image signal conversion circuit that converts an additive three primary color image signal into a subtractive three primary color image signal, one color having the worst signal-to-noise ratio among the additive three primary color image signals is used. An image signal conversion circuit comprising: a conversion section that excludes the image signal of the remaining two colors and converts the signal into the subtractive color mixing three primary color image signal using only the image signal of the remaining two colors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6720288U JPH01169886U (en) | 1988-05-20 | 1988-05-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6720288U JPH01169886U (en) | 1988-05-20 | 1988-05-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01169886U true JPH01169886U (en) | 1989-11-30 |
Family
ID=31292585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6720288U Pending JPH01169886U (en) | 1988-05-20 | 1988-05-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01169886U (en) |
-
1988
- 1988-05-20 JP JP6720288U patent/JPH01169886U/ja active Pending
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