JPH01132178U - - Google Patents
Info
- Publication number
- JPH01132178U JPH01132178U JP2758088U JP2758088U JPH01132178U JP H01132178 U JPH01132178 U JP H01132178U JP 2758088 U JP2758088 U JP 2758088U JP 2758088 U JP2758088 U JP 2758088U JP H01132178 U JPH01132178 U JP H01132178U
- Authority
- JP
- Japan
- Prior art keywords
- threshold
- image reading
- reading device
- document
- utility
- 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
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Color Image Communication Systems (AREA)
- Facsimile Image Signal Circuits (AREA)
Description
第１図は本考案の一実施例のブロツク図、第２
図はその主要部の信号の波形図、第３図は本実施
例によつて得られる再生画像の一例を示す図、第
４図は該再生画像の他の例を示す図である。
１……原稿、３……ダイクロイツク・ミラー、
４，５……イメージセンサ、７……セレクタ、１
３……比較器、１４……固定しきい値、１５……
疑似乱数発生回路。
Figure 1 is a block diagram of one embodiment of the present invention;
3 is a diagram showing an example of a reproduced image obtained by this embodiment, and FIG. 4 is a diagram showing another example of the reproduced image. 1...Manuscript, 3...Dichroitsk mirror,
4, 5... Image sensor, 7... Selector, 1
3...Comparator, 14...Fixed threshold value, 15...
Pseudo random number generation circuit.
Claims (1)
を２値化して取出するようにした画像読取り装置
において、前記原稿の特定色を分離して取出す手
段と、該手段から出力された信号に基づいて第１
および第２のしきい値を選択するしきい値選択手
段と、該原稿の電気信号を該しきい値選択手段に
よつて選択されたしきい値に基づいて２値化する
手段とを備えたことを特徴とする画像読取り装置
。 (2) 前記第１および第２のしきい値が、それぞ
れ固定しきい値および疑似乱数しきい値であるこ
とを特徴とする前記実用新案登録請求の範囲第１
項記載の画像読取り装置。[Claims for Utility Model Registration] (1) In an image reading device configured to binarize and extract an electrical signal of a document obtained by photoelectric conversion, means for separating and extracting a specific color of the document; , based on the signal output from the means.
and threshold selection means for selecting a second threshold; and means for binarizing the electrical signal of the document based on the threshold selected by the threshold selection means. An image reading device characterized by: (2) The utility model registration claim 1, wherein the first and second thresholds are a fixed threshold and a pseudo-random number threshold, respectively.
The image reading device described in Section 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2758088U JPH01132178U (en) | 1988-03-03 | 1988-03-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2758088U JPH01132178U (en) | 1988-03-03 | 1988-03-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01132178U true JPH01132178U (en) | 1989-09-07 |
Family
ID=31250192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2758088U Pending JPH01132178U (en) | 1988-03-03 | 1988-03-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01132178U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58211168A (en) * | 1982-06-03 | 1983-12-08 | Canon Inc | Processing method of color picture image |
| JPS59128873A (en) * | 1983-01-12 | 1984-07-25 | Sanyo Electric Co Ltd | Picture signal converting system of color facsimile |
-
1988
- 1988-03-03 JP JP2758088U patent/JPH01132178U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58211168A (en) * | 1982-06-03 | 1983-12-08 | Canon Inc | Processing method of color picture image |
| JPS59128873A (en) * | 1983-01-12 | 1984-07-25 | Sanyo Electric Co Ltd | Picture signal converting system of color facsimile |
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