JPS60111566A - Changing device of resolution - Google Patents
Changing device of resolutionInfo
- Publication number
- JPS60111566A JPS60111566A JP58217827A JP21782783A JPS60111566A JP S60111566 A JPS60111566 A JP S60111566A JP 58217827 A JP58217827 A JP 58217827A JP 21782783 A JP21782783 A JP 21782783A JP S60111566 A JPS60111566 A JP S60111566A
- Authority
- JP
- Japan
- Prior art keywords
- resolution
- signal
- effective
- zoom lens
- image
- 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
- Facsimile Scanning Arrangements (AREA)
- Image Input (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の属する技術分野〕
本発明はCCDなどの撮像素子を用いて原稿面を多(の
画素に分割し、その画素単位に原稿の情報を入力する画
像入力装置やファクシミリ装置等に最適な解像度変更装
置に関する。[Detailed Description of the Invention] [Technical field to which the invention pertains] The present invention relates to an image input device and an image input device that divides a document surface into a large number of pixels using an image sensor such as a CCD, and inputs document information for each pixel. This invention relates to a resolution changing device suitable for facsimile machines and the like.
従来、入力画像の解像度を変更する方法として9例えば
、撮像素子の全ドツトを使用した時の2分の1に解像度
を設定するには、第1図に示す様な一連の一次元撮像素
子1−1の奇数番目のドツトのみ入力したり、2ドツト
単位で論理和をとる方法が用いられている。一方、大刀
後の信号をメモリ上に展開できる場合は、第2図(a)
の白画素2−1.黒画素2−2を第2図(b)の白画素
2′−1,黒画素2“−2のように変換する様な処理に
より、擬似的に解像度を変更する方法も用いられている
。Conventionally, as a method of changing the resolution of an input image9, for example, in order to set the resolution to half of that when all dots of the image sensor are used, a series of one-dimensional image sensors 1 as shown in FIG. Methods such as inputting only the odd-numbered dots of -1 or calculating the logical sum in units of two dots are used. On the other hand, if the signal after the long sword can be expanded into memory, Figure 2 (a)
white pixel 2-1. A method is also used in which the resolution is changed in a pseudo manner by processing such as converting the black pixel 2-2 into the white pixel 2'-1 and the black pixel 2''-2 in FIG. 2(b).
しかしながら、前者の場合は撮像素子の全ドツトを使用
して入力する場合の整数分の1のみにしか変更できない
。また、後者の場合は整数かの1のみではないが、やは
り変更の倍率を任意に選択することは不可能で、しかも
変更する際には複雑な処理が必要である。However, in the former case, the change can only be made to one integer fraction of the input using all the dots of the image sensor. Furthermore, in the latter case, although it is not only an integer or 1, it is still impossible to arbitrarily select the change magnification, and moreover, complicated processing is required when changing.
本発明はこの様な欠点を除去し8複雑な処理を施すこと
なく画像入力する際の原稿面上の解像度を連続的且つ任
意に変更することが可能な解像度変更装置を提供しよう
とするものである。The present invention aims to eliminate such drawbacks and provide a resolution changing device that can continuously and arbitrarily change the resolution on the document surface when inputting images without performing complicated processing. be.
本発明による解像度変更装置は、任意の解像度X本/w
nに合わせて撮像素子の有効画素yを変更(原稿の一辺
の長さをa mmとするとy = a x )するとと
もに、有効画素yに応じてズームレンズの倍率を変化さ
せて有効画素の領域と像の大きさを一致させることによ
り、撮像素子の画素数の範囲内で任意の解像度を選択可
能とするものである。The resolution changing device according to the present invention has an arbitrary resolution of X lines/w.
The effective pixel y of the image sensor is changed according to n (if the length of one side of the document is a mm, then y = a x ), and the magnification of the zoom lens is changed according to the effective pixel y to change the effective pixel area. By matching the size of the image with the image size, it is possible to select any resolution within the range of the number of pixels of the image sensor.
次に9本発明の実施例について説明する。 Next, nine embodiments of the present invention will be described.
第3図は本発明の詳細な説明するための図で。FIG. 3 is a diagram for explaining the present invention in detail.
原稿6−1とズームレンズ3−2及び撮像素子3−3の
関係を示す。ここでは2便宜上、解像度を3段階に可変
とする場合について説明する。The relationship between the original 6-1, the zoom lens 3-2, and the image sensor 3-3 is shown. Here, for the sake of convenience, a case will be described in which the resolution is variable in three stages.
第6図において、最も解像度が大きい場合、撮像素子3
−6の有効域はylで、原稿6−1の像カ2/1に一致
する様にズームレンズ5−2を調整する。この時は、撮
像素子6−6の全画素を使用しているため、取り出され
た信号はマスクすることなくすべてを使用する。In FIG. 6, when the resolution is the highest, the image sensor 3
The effective range of -6 is yl, and the zoom lens 5-2 is adjusted to match the image area of the original 6-1 to 2/1. At this time, since all pixels of the image sensor 6-6 are used, all extracted signals are used without being masked.
次に、解像度を小さくした場合、撮像素子5−6の有効
域はy2あるいはハの様になる。また、ズームレンズの
倍率は、像をそれぞれy2あるいはy3に一致する様に
調整する。これらの時は+ u+ 1j2あるいは’I
s Va分だけ画素が不要となるので9両端の1/1−
y2/2あるいは’/+ −ys/2をマスクして、そ
の部分の信号を切り捨てる。Next, when the resolution is reduced, the effective area of the image sensor 5-6 becomes y2 or c. Further, the magnification of the zoom lens is adjusted so that the image matches y2 or y3, respectively. In these cases, + u+ 1j2 or 'I
Since pixels are not needed for s Va, 1/1- of both ends of 9
Mask y2/2 or '/+ -ys/2 and cut off the signal of that part.
第4図は一次元CODを使用し、A4サイズの原稿を1
6本/wn、12本層、8本/ynynの解像度で入力
する場合の1ラインの信号波形を示す。Figure 4 shows one A4 size document using one-dimensional COD.
The signal waveform of one line is shown when inputting at a resolution of 6 lines/wn, 12 lines/ynyn, and 8 lines/ynyn.
それぞれの有効画素数は3456 (16本/朋)。The number of effective pixels for each is 3456 (16 pixels/home).
2592 (12本/朋)、172B(8本/m)で波
形4−1がサンプルクロック、波形4−2(16本/M
)、4−4 (12本/籠)、 4−6(S本/期)4
はそれぞれ画素の有効域を示す信号、波形4−6(16
本/g)、l−5(12本/M)、4−7(8本/mm
)はそれぞれズームレンズの倍率の調整により画素の有
効域に一致するように拡大/縮小されたCCD上での白
黒の分布である。2592 (12 lines/m), 172B (8 lines/m), waveform 4-1 is the sample clock, waveform 4-2 (16 lines/m)
), 4-4 (12 pieces/basket), 4-6 (S pieces/period) 4
are signals indicating the effective area of the pixel, waveform 4-6 (16
strands/g), l-5 (12 strands/M), 4-7 (8 strands/mm
) are the black and white distributions on the CCD that have been enlarged/reduced to match the effective area of the pixel by adjusting the magnification of the zoom lens.
第5図は本発明の構成図で、クロック発生器5−1でサ
ンプルクロックを発生し、トリが信号発生器5−2で一
次元CCDセンサ5−3の信号掃き出し用のトリガ信号
を作成する。5−5は解像度選択部で、主に人間のキー
選択やつまみ等の操作(二より選択数に応じた任意の解
像度が選択される。5−6はズームレンズ駆動部で、解
像度選択部5−5からの信号によりズームレンズ5−7
の倍率を選択された解像度に合せて調整する。−次元C
CDセンサ5−3はトリガ信号発生器5−2からのトリ
ガによりクロック発生器5−1のクロックに同期して画
信号を掃き出す。5−4は画信号の有効域を指定する信
号の発生部で、カウンタからなりトリガ信号発生器5−
2からのトリかによりクロック発生器5−1のクロック
をカウントする。カウント数は解像度選択部5−5で指
定された解像度により変化する。そして、アンドゲート
5−8で一次元CCDセンザ5−3出力(画信号)と有
効域指定信号発生部5−4の出力(画信号の有効域)の
和をとって解像度選択部5−5で選択された任意の解像
度を持った画信号とする。FIG. 5 is a block diagram of the present invention, in which a clock generator 5-1 generates a sample clock, and a signal generator 5-2 generates a trigger signal for sweeping out the signal of a one-dimensional CCD sensor 5-3. . 5-5 is a resolution selection section, which is mainly used for human key selection and knob operations (2) to select an arbitrary resolution according to the number of selections; 5-6 is a zoom lens drive section; the resolution selection section 5 Zoom lens 5-7 by the signal from -5
Adjust the magnification to match the selected resolution. -Dimension C
The CD sensor 5-3 sweeps out an image signal in synchronization with the clock of the clock generator 5-1 by a trigger from the trigger signal generator 5-2. 5-4 is a signal generator for specifying the effective range of the image signal, which is composed of a counter and includes a trigger signal generator 5-4.
The clock of the clock generator 5-1 is counted based on the number of clocks from the clock generator 5-1. The count number changes depending on the resolution specified by the resolution selection section 5-5. Then, an AND gate 5-8 calculates the sum of the one-dimensional CCD sensor 5-3 output (image signal) and the output of the effective area designation signal generator 5-4 (effective area of the image signal), and the result is determined by the resolution selection unit 5-8. The image signal has an arbitrary resolution selected in .
以上の説明から明らかな様に9本発明による解像度変更
装置を用いれば、ズームレンズの倍率の調整と撮像素子
の有効画素の領域を変更するだけで、複雑な処理を施す
ことなく、連続的に任意の解像度で画像入力を行えると
いう効果がある。As is clear from the above explanation, if the resolution changing device according to the present invention is used, it is possible to continuously change the resolution by simply adjusting the magnification of the zoom lens and changing the effective pixel area of the image sensor without performing complicated processing. This has the effect of allowing image input at any resolution.
第1図は撮像素子の一例を示し、第2図はメモリ上に展
開された画信号の解像度を変更する従来方法を説明する
ための図、第3図は本発明による解像度変更装置の原理
を説明するための図、第4図はAサイズの原稿を16本
/B、12本/myn、8本/rrunの各解像度で入
力する際の画素の有効域と撮像素子上に結ばれた像の関
係を示した図、第5図は本発明による解像度変更装置の
一実施例の構成図。
1−1・・−次元撮像素子、1−2・・・入力部。
2−1.2’−1・・・白画素、 2−2.2”−2・
・・黒画素。
3−1・・・原i、3−2・・・ズームレンズ、3−6
・・撮像素子、5−1・・クロック発生器、5−2・ト
リが信号発生器、5−6・・・−次元CCDセンサ。
5−4・・・有効域指定信号発生部、5−5・・・解像
度m折部、5.−6・・・ズームレンズ−駆動部、5−
7・・・ズームレンズ。
第3図Fig. 1 shows an example of an image sensor, Fig. 2 is a diagram for explaining a conventional method of changing the resolution of an image signal developed on a memory, and Fig. 3 shows the principle of the resolution changing device according to the present invention. Figure 4 is an explanatory diagram showing the effective area of pixels and the image formed on the image sensor when inputting an A-size original at resolutions of 16 lines/B, 12 lines/my, and 8 lines/rrun. FIG. 5 is a configuration diagram of an embodiment of the resolution changing device according to the present invention. 1-1... -dimensional image sensor, 1-2... input section. 2-1.2'-1...White pixel, 2-2.2"-2.
・Black pixel. 3-1... Original i, 3-2... Zoom lens, 3-6
...Image sensor, 5-1...Clock generator, 5-2. Signal generator, 5-6...-dimensional CCD sensor. 5-4... Effective area designation signal generation section, 5-5... Resolution m-folding section, 5. -6...Zoom lens-drive unit, 5-
7...Zoom lens. Figure 3
Claims (1)
てズームレンズを用い、解像度選択手段と、該解像度選
択手段の出力に応じて、前記撮像素子の有効画素範囲を
変更する手段及び前記撮像素子上の結像の大きさを前記
有効画素範囲と一致するように前記ズームレンズを調整
する手段とを有することを特徴とする解像度変更装置。1. A zoom lens is used as a lens for forming an image of a document on an image sensor, and a resolution selection means, means for changing the effective pixel range of the image sensor according to an output of the resolution selection means, and the A resolution changing device comprising means for adjusting the zoom lens so that the size of the image formed on the image sensor matches the effective pixel range.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58217827A JPS60111566A (en) | 1983-11-21 | 1983-11-21 | Changing device of resolution |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58217827A JPS60111566A (en) | 1983-11-21 | 1983-11-21 | Changing device of resolution |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS60111566A true JPS60111566A (en) | 1985-06-18 |
Family
ID=16710364
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP58217827A Pending JPS60111566A (en) | 1983-11-21 | 1983-11-21 | Changing device of resolution |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60111566A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010284544A (en) * | 2010-08-23 | 2010-12-24 | Canon Inc | Ophthalmologic photographing apparatus |
JP2014039874A (en) * | 2013-10-30 | 2014-03-06 | Canon Inc | Ophthalmological photographing apparatus and control method of the same |
CN105373380A (en) * | 2015-10-19 | 2016-03-02 | 中国联合网络通信集团有限公司 | Picture slicing method and picture slicing device |
-
1983
- 1983-11-21 JP JP58217827A patent/JPS60111566A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010284544A (en) * | 2010-08-23 | 2010-12-24 | Canon Inc | Ophthalmologic photographing apparatus |
JP2014039874A (en) * | 2013-10-30 | 2014-03-06 | Canon Inc | Ophthalmological photographing apparatus and control method of the same |
CN105373380A (en) * | 2015-10-19 | 2016-03-02 | 中国联合网络通信集团有限公司 | Picture slicing method and picture slicing device |
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