JPH0419072U - - Google Patents
Info
- Publication number
- JPH0419072U JPH0419072U JP6004690U JP6004690U JPH0419072U JP H0419072 U JPH0419072 U JP H0419072U JP 6004690 U JP6004690 U JP 6004690U JP 6004690 U JP6004690 U JP 6004690U JP H0419072 U JPH0419072 U JP H0419072U
- Authority
- JP
- Japan
- Prior art keywords
- color
- pixel density
- reading device
- image reading
- circuit
- 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
- 238000012952 Resampling Methods 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 239000003086 colorant Substances 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Color Image Communication Systems (AREA)
- Image Processing (AREA)
- Facsimile Scanning Arrangements (AREA)
- Facsimile Image Signal Circuits (AREA)
Description
第１図は本考案のカラー画像読取装置の一実施
例である点順次カラー画像読取装置の一例の要部
構成を示すブロツク図、第２図は第１図の装置の
動作を説明する波形図、第３図は従来の点順次カ
ラー画像読取装置の一例の要部構成を示すブロツ
ク図、第４図は第３図の装置の動作を説明する波
形図である。
１……点順次カラー画像読取装置（カラー画像
読取装置）、２……色フイルタ、３……ラインイ
メージセンサ、８……画素密度変換回路、８−１
，９−１Ａ，９−１Ｂ，９−１Ｃ，９−１Ｄ……
シフトレジスタ、８−３……再サンプリング回路
、９……尖鋭度強調回路、１０……原稿（カラー
原稿）。
FIG. 1 is a block diagram showing the main structure of an example of a dot sequential color image reading device which is an embodiment of the color image reading device of the present invention, and FIG. 2 is a waveform diagram explaining the operation of the device shown in FIG. 1. , FIG. 3 is a block diagram showing the main structure of an example of a conventional dot sequential color image reading device, and FIG. 4 is a waveform diagram illustrating the operation of the device shown in FIG. 3. 1... Point sequential color image reading device (color image reading device), 2... Color filter, 3... Line image sensor, 8... Pixel density conversion circuit, 8-1
, 9-1A, 9-1B, 9-1C, 9-1D...
Shift register, 8-3...Resampling circuit, 9... Sharpness enhancement circuit, 10... Original (color original).
Claims (1)
タが前面に配置されたラインイメージセンサによ
り、カラー原稿読取データを出力するカラー画像
読取装置において、色信号の種類数に応じたシフ
ト数を持つシフトレジスタにより、入力された点
順次色信号の前期複数色分の色信号の組を１ユニ
ツトとして処理する２次元２次微分フイルタより
なり、それぞれの前記色信号別に高域補償を行う
尖鋭度強調回路を備えたことを特徴とするカラー
画像読取装置。 (2) 前記尖鋭度強調回路の前段に、前記シフト
レジスタを有する２次元ローパスフイルタ及び再
サンプリング回路よりなり、必要に応じて、前記
ラインイメージセンサの画素密度より粗い所望の
画素密度に変換して読取データを出力する画素密
度変換回路を配置したことを特徴とする実用新案
登録請求の範囲第１項記載のカラー画像読取装置
。[Claims for Utility Model Registration] (1) In a color image reading device that outputs color document reading data using a line image sensor in which a color filter consisting of a plurality of single-color filters is arranged in front, the number of types of color signals is It consists of a two-dimensional quadratic differential filter that processes a set of color signals for multiple colors of the inputted point sequential color signal as one unit using a shift register with a shift number corresponding to the number of shifts. A color image reading device characterized by comprising a sharpness enhancement circuit that performs area compensation. (2) A two-dimensional low-pass filter having the shift register and a resampling circuit are provided before the sharpness enhancement circuit, and if necessary, the pixel density is converted to a desired pixel density coarser than the pixel density of the line image sensor. A color image reading device according to claim 1, further comprising a pixel density conversion circuit for outputting read data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6004690U JPH0419072U (en) | 1990-06-06 | 1990-06-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6004690U JPH0419072U (en) | 1990-06-06 | 1990-06-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0419072U true JPH0419072U (en) | 1992-02-18 |
Family
ID=31587068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6004690U Pending JPH0419072U (en) | 1990-06-06 | 1990-06-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0419072U (en) |
-
1990
- 1990-06-06 JP JP6004690U patent/JPH0419072U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH01183960A (en) | Picture information recording device | |
| JPH0329468A (en) | Color picture processing unit | |
| JPH0419072U (en) | ||
| JPS62101170A (en) | Picture reader | |
| JP2815497B2 (en) | Color video camera | |
| JP2001511332A (en) | Color and contour signal generation | |
| JP3696892B2 (en) | Color image output apparatus and color image output method | |
| JPH08327667A (en) | Waveform observation device | |
| JPS62164189U (en) | ||
| JPH0249272U (en) | ||
| JPS6323869U (en) | ||
| JPH051437Y2 (en) | ||
| JPH01161526A (en) | Frame memory control method | |
| JPH0625762U (en) | Digital oscilloscope | |
| JPH02113765A (en) | Chrominance signal separating circuit for image sensor | |
| JPS62185462A (en) | Digital color copying machine | |
| JPS61251896A (en) | Character font conversion system | |
| JPS62159068U (en) | ||
| JPS58169763U (en) | Scanner for modified exposure | |
| JPS62245776A (en) | Color correcting device for color printer | |
| JPS61202584A (en) | Video printer | |
| JPH0471175U (en) | ||
| JPS61171378U (en) | ||
| JPH02113764A (en) | Chrominance signal separating circuit for image sensor | |
| JPH0170480U (en) |