JPH03101077U - - Google Patents
Info
- Publication number
- JPH03101077U JPH03101077U JP885990U JP885990U JPH03101077U JP H03101077 U JPH03101077 U JP H03101077U JP 885990 U JP885990 U JP 885990U JP 885990 U JP885990 U JP 885990U JP H03101077 U JPH03101077 U JP H03101077U
- Authority
- JP
- Japan
- Prior art keywords
- image processing
- value
- input
- processing device
- conversion means
- 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 description 4
- 238000010586 diagram Methods 0.000 description 7
Landscapes
- Facsimile Image Signal Circuits (AREA)
Description
第１図は本考案の実施例を示す画像処理装置の
構成ブロツク図、第２図は画像の座標系の定義を
示す図、第３図は従来の画像処理装置の構成ブロ
ツク図、第４図は誤差信号の平均値と分散を示す
図、第５図ａ，ｂは第１図のγ補正特性図、第６
図ａ，ｂは第１図の階調変換特性図である。
１０……γ補正回路、１１……階調変換回路、
２０……２値化回路、３０……メモリ。
FIG. 1 is a block diagram of the configuration of an image processing device showing an embodiment of the present invention, FIG. 2 is a diagram showing the definition of the image coordinate system, FIG. 3 is a block diagram of the configuration of a conventional image processing device, and FIG. 4 is a diagram showing the average value and variance of the error signal, Figures 5a and b are the γ correction characteristic diagrams of Figure 1, and Figure 6 is a diagram showing the average value and variance of the error signal.
Figures a and b are gradation conversion characteristic diagrams in Figure 1. 10...γ correction circuit, 11...gradation conversion circuit,
20...Binarization circuit, 30...Memory.
Claims (1)
値化する２値化処理手段を有する画像処理装置に
おいて、 前記入力多値データを特定のレベルを持たない
多値データに変換する階調変換手段を、前記２値
化処理手段の入力側に設けたことを特徴とする画
像処理装置。 (2) 請求項１記載の画像処理装置において、前
記階調変換手段は、 少なくとも前記閾値あるいはその近傍の値に変
換しないような階調ジヤンプの領域特性を持つ画
像処理装置。[Claims for Utility Model Registration] (1) Input multivalued data of original pixels is
In an image processing apparatus having a binarization processing means for digitizing, a gradation conversion means for converting the input multi-value data into multi-value data without a specific level is provided on the input side of the binarization processing means. An image processing device characterized by: (2) The image processing device according to claim 1, wherein the tone conversion means has a tone jump region characteristic that does not convert to at least the threshold value or a value in the vicinity thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP885990U JPH03101077U (en) | 1990-01-31 | 1990-01-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP885990U JPH03101077U (en) | 1990-01-31 | 1990-01-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03101077U true JPH03101077U (en) | 1991-10-22 |
Family
ID=31512475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP885990U Pending JPH03101077U (en) | 1990-01-31 | 1990-01-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03101077U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007191883A (en) * | 2006-01-18 | 2007-08-02 | Global Arts:Kk | Joint forming spacer |
-
1990
- 1990-01-31 JP JP885990U patent/JPH03101077U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007191883A (en) * | 2006-01-18 | 2007-08-02 | Global Arts:Kk | Joint forming spacer |
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