JPH0420762U - - Google Patents
Info
- Publication number
- JPH0420762U JPH0420762U JP6292190U JP6292190U JPH0420762U JP H0420762 U JPH0420762 U JP H0420762U JP 6292190 U JP6292190 U JP 6292190U JP 6292190 U JP6292190 U JP 6292190U JP H0420762 U JPH0420762 U JP H0420762U
- Authority
- JP
- Japan
- Prior art keywords
- image signal
- threshold value
- specifying
- character area
- binarization device
- 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
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Facsimile Image Signal Circuits (AREA)
Description
第１図は本考案の画像信号２値化装置の一実施
例を示すブロツク図、第２図は第１図の装置にお
ける閾値決定手段の動作説明図、第３図は第１図
の装置及び従来例の画像信号２値化装置における
閾値決定手段の動作説明図である。
１……画像信号２値化装置、７……閾値決定手
段、８……文字領域指定手段。
FIG. 1 is a block diagram showing an embodiment of the image signal binarization device of the present invention, FIG. 2 is an explanatory diagram of the operation of the threshold value determination means in the device of FIG. 1, and FIG. 3 is a diagram showing the device of FIG. FIG. 2 is an explanatory diagram of the operation of a threshold determining means in a conventional image signal binarization device. 1... Image signal binarization device, 7... Threshold value determining means, 8... Character area specifying means.
Claims (1)
ストグラムに基づきこの信号の２値化のための閾
値を決定し、前記閾値に基づいて前記画像信号を
２値化した２値画像信号を得る画像信号２値化装
置において、前記２値画像信号による画面データ
中のハイレベルとローレベルとの頻度の割合を指
定することにより前記閾値を決定する閾値決定手
段を備えたことを特徴とする画像信号２値化装置
。 (2) モニタ画面に基づき文字領域を指定する文
字領域指定手段を備え、前記文字領域以外の領域
の画像信号について、前記閾値決定手段により決
定された閾値を用いることを特徴とする実用新案
登録請求の範囲第１項記載の画像信号２値化装置
。[Claims for Utility Model Registration] (1) A threshold value for binarizing this signal is determined based on a histogram of the luminance distribution of screen data based on the image signal, and the image signal is binarized based on the threshold value. An image signal binarization device for obtaining a binary image signal, comprising threshold value determining means for determining the threshold value by specifying a frequency ratio between a high level and a low level in screen data based on the binary image signal. An image signal binarization device characterized by: (2) A utility model registration request characterized in that it comprises a character area specifying means for specifying a character area based on a monitor screen, and uses the threshold value determined by the threshold value determining means for an image signal of an area other than the character area. The image signal binarization device according to the range 1 above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6292190U JPH0420762U (en) | 1990-06-14 | 1990-06-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6292190U JPH0420762U (en) | 1990-06-14 | 1990-06-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0420762U true JPH0420762U (en) | 1992-02-21 |
Family
ID=31592508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6292190U Pending JPH0420762U (en) | 1990-06-14 | 1990-06-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0420762U (en) |
-
1990
- 1990-06-14 JP JP6292190U patent/JPH0420762U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0420762U (en) | ||
| JPS59149006U (en) | detection device | |
| JPH01116853U (en) | ||
| JPH044354U (en) | ||
| JPH0559547U (en) | Image target detection device | |
| JPS6150337U (en) | ||
| JPS5852439U (en) | flame detection device | |
| JPS61187160U (en) | ||
| JP2557887B2 (en) | Vehicle speed measurement device | |
| JPS6363949U (en) | ||
| JPS63137809U (en) | ||
| JPS58139566A (en) | Picture reader | |
| JPH03101077U (en) | ||
| JPH0191211U (en) | ||
| JPH0473888U (en) | ||
| JPH033099U (en) | ||
| JPS60109029U (en) | Laser irradiation detection device | |
| JPH0336269U (en) | ||
| JPS60131883U (en) | image tracking device | |
| JPH0359784U (en) | ||
| JPS61109262U (en) | ||
| JPH0579661U (en) | Image target detection device | |
| JPS5847957U (en) | Planar figure position detection device | |
| JPH0218168U (en) | ||
| JPH04142676A (en) | Binary image conversion method |