JPS60185469A - Reading method of picture signal - Google Patents
Reading method of picture signalInfo
- Publication number
- JPS60185469A JPS60185469A JP59040968A JP4096884A JPS60185469A JP S60185469 A JPS60185469 A JP S60185469A JP 59040968 A JP59040968 A JP 59040968A JP 4096884 A JP4096884 A JP 4096884A JP S60185469 A JPS60185469 A JP S60185469A
- Authority
- JP
- Japan
- Prior art keywords
- image
- signal
- color
- compression unit
- scanning
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/46—Colour picture communication systems
- H04N1/48—Picture signal generators
- H04N1/486—Picture signal generators with separate detectors, each detector being used for one specific colour component
- H04N1/488—Picture signal generators with separate detectors, each detector being used for one specific colour component using beam-splitters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/46—Colour picture communication systems
- H04N1/56—Processing of colour picture signals
- H04N1/58—Edge or detail enhancement; Noise or error suppression, e.g. colour misregistration correction
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/46—Colour picture communication systems
- H04N1/64—Systems for the transmission or the storage of the colour picture signal; Details therefor, e.g. coding or decoding means therefor
- H04N1/648—Transmitting or storing the primary (additive or subtractive) colour signals; Compression thereof
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Facsimile Scanning Arrangements (AREA)
- Image Input (AREA)
- Editing Of Facsimile Originals (AREA)
- Color Image Communication Systems (AREA)
Abstract
Description
【発明の詳細な説明】
C)産業上の利用分ψ〕・
この発明は、カラースキャナ等のrlハ1像走査配録装
置における画像信号の読取り方法に関し、とくに%両筒
!信号の狩lセりと同時にデータlE編を行ない得るよ
うl−たi[!i+像信号のW取り方法に関すZ・。[Detailed Description of the Invention] C) Industrial Application ψ] This invention relates to a method for reading image signals in an rl image scanning and recording device such as a color scanner, and particularly relates to a method for reading image signals in an rl image scanning and recording device such as a color scanner. In order to be able to perform data editing at the same time as signal hunting, Z. regarding the method for extracting W from the i+ image signal.
(ロ)(/Y=来技術
例えば、スキャナ入力部によって得ら第9だ、り数の原
ii!+iに対応する色調修整済み画像データをいった
ん磁気ディスク等のメモリ装置に仮登録し、しかる後、
中央演算処理装置(CPU)で1旨定したレイアウトに
従って編集処理を行ない、との処理隣み両像データに基
づいてスキャナ出力部によりフィルム等に複製1III
I像存d己録す7.7よう1’[シたレイアウトスギャ
ナシステム等のi!1+像処理装置においては、カラー
−淡II!llI家のII−縮再生技術の採用により、
扱わ4け1.ばからないディジタル向像データの減少と
、編集部:DJ! 穫能のハード化・ハードウェアーの
高速化とい、った処3.i14側の高速化により純団4
作業時間の短縮が[ヌ1ら71ている。(B) (/Y=Next technology For example, the color tone corrected image data corresponding to the 9th original number ii!+i obtained by the scanner input unit is temporarily registered in a memory device such as a magnetic disk, and then rear,
The central processing unit (CPU) performs editing processing according to a predetermined layout, and the scanner output section copies the data onto film, etc. based on the processed adjacent image data.
I image exist d self-record 7.7 like 1' [i! In 1+ image processing equipment, Color-Light II! By adopting II family's II-regeneration technology,
Treated as 4ke1. The dramatic decrease in digital visual data and the editorial department: DJ! 3. Increased performance and hardware speed. Jundan 4 due to faster speed on i14 side
Shortening of working time is shown in [Nu1 et al.71].
かかるカラー濃淡画像の圧縮、再生技術は、これ捷1゛
にも神々堤楽き)]2、本願出願人も特1ノ1」昭55
−227n8として、人間の視覚%性および画像信号間
の相関性を利用して1iIji併信号をEF、組、再生
1゛る方法を沸案している。すなわち、この方法は人間
の視覚が微小部分における明暗の変化に対しては敏感な
喘別能力を治するのに対し、色彩の変化に対してはそf
L程の1)η?別1’l’ii力を有しないことな利用
するもので、阿接した↑y)・11の画素からなる画像
信号の庄稲単位61域会・収定しておき、その旬足内の
明度全相うイパ号については全11!l’l素残し、色
彩を担う信号についてil所定の関係をもって省略して
、圧縮単位領域ごとの画媛データ全体のビ・、l−数を
低顯するように1.だものである。The compression and reproduction technology of such color gradation images is such that the gods are happy with this technology.
-227n8, we are devising a method for EF, pairing, and reproduction of 1iIji combined signals by utilizing human visual perception and the correlation between image signals. In other words, while this method improves the ability of human vision to distinguish between light and dark areas, which is sensitive to changes in brightness and darkness in minute areas, this method is sensitive to changes in color.
1) η of about L? ↑y)・Sho rice unit 61 area of image signal consisting of 11 pixels All 11 about the Ipa issue that meets all the brightness! 1. In order to reduce the number of pixels in the entire image data for each compressed unit area by omitting the signals responsible for colors in a predetermined relationship, 1. It is something.
この方法によ1ば、I[ilI像1−号をメモリ装置行
に−tT込む必要がある場合VCはその容[11を犬[
1届に叩約することが−(″きるとともに、圧縮単位領
域・を机:果作業ヒの基本単0γとして複」伎すべき両
1牧の配置′が自由に行えるので、編集仙閲台・叶−1
f@率の便数に比例して速くすることができる。邊〕、
−1かかる如くに蛛口集σフ9た両イに51iA号の出
力にあたっては多数い原画から(イア1成び11゜る復
仙乃痩−裂直像て゛あっても、最終的シ(幼、11f1
次メモリ装置から編集部みの凹・像信号を続出I1、衾
画像信号により複製画像を記録するたけで5.るため、
出力時間が問題になるととtJない。According to this method, if it is necessary to put I[ilI image 1- into a memory device row -tT, the VC will store its contents [11] in dog[
Since it is possible to make a contract in one report - ('as well as the compression unit area and the desk: the basic unit of the fruit work is the arrangement of the two parts that should be done'), the editing Senbokudai・Kano-1
The speed can be increased in proportion to the number of flights at the f@ rate. Side],
-1 As shown above, in order to output the 51iA issue, the final image ( Young, 11f1
5. Next, the concave and image signals of the editing section are successively outputted from the memory device, and the duplicate image is recorded using the back image signal.5. In order to
I don't think output time will be an issue.
一方入力部1111で、全< tE軛せずにその捷オ全
匝索についてピックアップした1j51像デ・−タに1
1にて1菱からかかるFfE 4IXを・行うならに丁
、いったん、相数のyA画に対しi)’、、するii;
+i像信号が店込−!れるメモリ装置が極めて犬′?■
旬になる。On the other hand, the input unit 1111 inputs 1 to the 1j51 image data picked up for the entire traverse without yoke.
If you perform FfE 4IX starting from 1 in 1, once for the yA stroke of the phase number i)',, ii;
+I image signal is included in the store-! Is the memory device used extremely dog'? ■
It's in season.
そこで従来の回転シリンダタイプのスキャナ入力装時に
より原稿の読取りを行ないながら、旨」収ら几た画像信
号を11次、実時間で圧物]−でメモリ装置へ書込むこ
とが考えら几る。Therefore, while reading the original using a conventional rotary cylinder type scanner input device, it has been considered to write the image signal that has been reduced to 11th order into the memory device in real time. .
しかしながら、そのためには、例えば2×2画素を圧縮
単位領域とする場合、スキャナ入口部からメモリ装置に
書き込む以前に少なくとも走査線1本分×4色分のパン
ツアメモリが必要で、L=かも原1tjiニジリンダ2
回転ごとに、圧縮ζ1.た画像信号が転送さn、るにず
ぎないため、いっこうに入力部+11jをあげることが
できなかった。However, in order to do this, for example, if the compression unit area is 2 x 2 pixels, a panzer memory for at least 1 scanning line x 4 colors is required before writing to the memory device from the scanner entrance, and L = Hara 1tji Niji Linda 2
For each revolution, the compression ζ1. Since the image signal was transferred, it was not possible to turn on the input section +11j at all.
このようにカラー濃淡画像の圧縮、・再生技術σ)l−
米用てより、かかる画像走査配録装置においては1編集
時間が大幅に短縮できるにもかかわらず、入力部の読み
取り速度をあげることができないため、結局全体の処理
、車席を高める捷でては至らず、絖み取り速度の高速化
が脣すまず要求さ几るようになってきている。In this way, compression and reproduction technology of color gradation images σ)l-
Even though such an image scanning and recording device can significantly shorten the time required for editing, it is not possible to increase the reading speed of the input section, so it is difficult to increase the overall processing speed and seat size. However, there is a growing demand for faster thread removal speeds.
入力速度の高速化という技術的課顕の解決に1、本和出
なり人から特開昭58−123540および特開昭58
−137361 として1京両シリンダ(1)1回転で
、析数本の走罹紳に相当する門・負゛宕号を同時に読取
る方法が提案ざ几ており、こ2゛1らの方法を適用する
ことが考えら1するが、卯純には適用できない。と言う
のも、通常原画像と複製画像との間には倍率変更が必I
Mで、そノ1.にともなう麓、み椴り側の副フ〔督ピン
チの調・埒に対する配慮がなさソ1、る必要があるから
である。In order to solve the technical problem of increasing input speed, Honwade and others published JP-A-58-123540 and JP-A-58.
-137361, a method has been proposed to simultaneously read the gate and negative signs corresponding to several analytical cylinders in one rotation of the 1000 cylinder (1), and these methods are applied. I could think of something to do, but it cannot be applied to Usumi. This is because it is usually necessary to change the magnification between the original image and the duplicate image.
M, part 1. This is because it is necessary to take into consideration the tone and strength of the slopes at the foot of the mountain and on the mountainside side.
0勺 自白り
この発明は、本願出願人の出願に係る耐f記特開昭58
−123540 もしくVi特開昭58−’l5756
1 に開示さnた技術を利用[−で、原画から画像信号
をピックアップすると同時に、前記燗開昭55−227
08に開示しまた如きIF和、)方法を実&:i する
ようにしたもので、不要なit↓z1併イr号は最fり
からピックアップさス1、ないためブ[有効率が良く、
U2かも複製倍率の変史にも速やかに71応1〜得る画
像侶→づの読取り方法σ)ゴ是供を目的とする。0 勺 Confession Riko's invention is based on the patent application filed in 1983 by the applicant.
-123540 or Vi JP-A-1983-'l5756
Using the technology disclosed in 1 [-, the image signal is picked up from the original image, and at the same time, the
08, the IF sum, ) method is implemented, and the unnecessary it↓z1 combination r is picked up from the most ,
The purpose is to provide information on how to read the images that can be obtained immediately due to changes in the reproduction magnification of U2.
に)(J/)成
この発明しこ係Z1両fIJ: (、;号の読取り方法
は、カラー原鵠−ヒの隣接する複数のjiIJ:素、例
えば2I2両紫を圧縮単位領域と設定しておき、この領
域の、副走査方向VC@接するrU数本1例え(・−1
′、2本の走査線をカバーL イr+る単一の走査光ビ
ームでカラー原稿を71t省:し、この走査光ビームを
、単一のピックアップレンズ及び光ビーム分賃11手段
等を(+tflえた色分解光学系を介して各光電変換手
段に投影し、とt′1.によって該2本のメ1戸食紳に
対応する各色分解両得・信号7、・同時に得るとともに
、該色分解曲1像仇号をディンタル変換j2、変換σ1
1に圧縮1)1位領域内の各ディジタル「4)1像信号
のうち、少々くとも1つ、セ・1えは、明度を」11う
信号ろ・夕M(、だ他のディ/タル両像信号を、所定の
1′−1係をもたせなから省1ti’i L、圧縮単位
領域ごとにそのビット数か低減さ)9.だ画像データを
得ることを特例とす/。ni) (J/) Naruko's invention Shiko-kaker Z1 ryo fIJ: (,; The reading method for the issue is to set multiple adjacent jiIJ: element of color hara-hi, for example, 2I2 ryo-murasaki as the compression unit area. Then, in this area, sub-scanning direction VC@contacting rU number one example (・-1
', saves 71 tons of color originals with a single scanning light beam that covers the two scanning lines (+tfl The image is projected onto each photoelectric conversion means through the color separation optical system obtained by the camera, and by t'1., each color separation signal 7 corresponding to the two signals is simultaneously obtained, and the color separation signal 7 is simultaneously obtained. Song 1 image number is digitally transformed j2, transformed σ1
1) Each digital signal in the 1st area 4) At least one of the 1 image signals has brightness. (1ti'i L, the number of bits is reduced for each compression unit area)9. A special exception is the acquisition of image data.
さらに−前記ビックア・ツブレンズをズームレンズとす
ることにより、複製倍杢を変換する場合にカラー原画読
取り時の副走査ビ、ツチを速やかに変更し2得るように
したことを@徴とする。Furthermore, by using a zoom lens as the big-a-tube lens, when converting the reproduction magnification, it is possible to quickly change the sub-scanning width and width when reading a color original image to obtain 2.
(ホ)実施1例
以下図面に基づいて、この発明に係る方法の実施例につ
いて説明する。(e) Embodiment 1 An embodiment of the method according to the present invention will be described below based on the drawings.
外1図および第2図は、この発明に係る画像読取り方法
の1例を説明するためのy略図であり、原画シリング(
])VrC装着σ1装着力1−原画を走査用光ビームに
より該原画ヒにおける枯数の走査線(実施例では2本)
に対応する微小なす査画素を走置l2、次に該走査光ビ
ームをビリクアリブレンズ(2)を介して、光ビーム分
割手段(3)の位桁に結fWヒせる。この光ビーム分割
生膜(3)は前d己特開昭58−123540 号り[
J細ψ4′に開示σハ、ているように、長円状も1−く
け梯形状の開口部0;’Jを有するミラー(14)と、
屋根型ミラー(1υとの組合わせによって構成さ11.
でおり、走査光ビームはこの光ビーム分割手段(3)に
より、各走査線上の走査画素に対し1らする走介光ビー
ム(111)お・よび(1i 2)に分割さノする。こ
の走査光ビーム(111獄、集光レンズ(41)、ダイ
クロツクミラー(5)、(61)、(7)、各色分解フ
ィルタ(18R)、(18G)、(IIllB)を介し
て、光電変換素子(8)、(’+9、Lli)で光電変
換さ7”L、加法混合の3原色に対応した各色分解信号
Ro 、 Go 、BOνζ相当する1iIIl像信号
が得ら几、走を光ビーム(t 12)は、集光レンズ(
42)で集光さnた後、例えは緑色光ビームのみを反f
rIするダイクロイックミラー(62) 、 緑色分j
llfrフィルタ(18G)を介1〜で、光電変換素子
(92)で光電変換され、色分解信号01 に相当する
画像信号が得ら1する。Figures 1 and 2 are schematic diagrams for explaining an example of the image reading method according to the present invention, and the original picture Schilling (
]) VrC attachment σ1 Attachment force 1 - The original image is scanned by a scanning light beam for the entire number of scanning lines (two in the example) on the original image.
A minute scanning pixel corresponding to 12 is scanned, and then the scanning light beam is focused fW on the digit of the light beam splitting means (3) via the biliqualib lens (2). This light beam split biomembrane (3) was previously published in Japanese Unexamined Patent Publication No. 123540/1988 [
A mirror (14) having an oval and ladder-shaped opening 0;
11.Constructed by combining roof type mirror (1υ).
The scanning light beam is divided by the light beam splitting means (3) into scanning light beams (111) and (1i 2) which are equal to 1 for each scanning pixel on each scanning line. Through this scanning light beam (111), condensing lens (41), dichroic mirrors (5), (61), (7), and each color separation filter (18R), (18G), (IIllB), photoelectric conversion is performed. The element (8), ('+9, Lli) photoelectrically converts the 7"L image signal corresponding to each color separation signal Ro, Go, BOνζ corresponding to the three additive primary colors. t12) is the condensing lens (
42), for example, only the green light beam is focused by
rI dichroic mirror (62), green component j
The signal is photoelectrically converted by the photoelectric conversion element (92) through the llfr filter (18G), and an image signal corresponding to the color separation signal 01 is obtained.
寸ブ?・7、駒・1図では図示を省略したか、光ビーム
分割手段(3)のミラーθ弔の銚田1で反射略扛プこ光
ビームは、第2図に示す如く、集光レンズ(7I3)、
フィルタ(18U)を介して光電変換素子Qで光電変換
することにより、アンシャープ信号(町がイnら21.
る。Dimensions?・7. Piece ・Perhaps not shown in Figure 1, the light beam is reflected by the mirror θ of the light beam splitting means (3) and is approximately split by the condenser lens ( 7I3),
By photoelectrically converting the photoelectric conversion element Q through the filter (18U), an unsharp signal (machigain et al. 21.
Ru.
かかる如く、カラー坤:画を走査することにより副走査
方向に一2接する2本の走査%%;’!に対応する両区
信号Ro 、Go 、 Bo と画像信号、jG+ な
らびにアンシャープ[8号0刀が同時に倚マ
ら几る。なお、当然のことながら、こJlらのRO、G
o 、BO、Gl およびUf得るための光電変1勢索
子1、その使用フィルターは違っても、杷対光吊に対1
−では同一の光電変)色特性を有するように調整σ11
ているものとする。As described above, color gon: By scanning an image, two scans %% that are tangent in the sub-scanning direction;'! The corresponding signals Ro, Go, Bo, image signals, jG+, and unsharp [No. In addition, as a matter of course, the RO and G of these Jl et al.
o, BO, Gl and Uf, 1 photoelectric transformer 1 seiko, even though the filters used are different, 1 for loquat and 1 for light suspension.
- Adjusted to have the same photoelectric change) color characteristics σ11
It is assumed that
第3シ1は、この発明に係る方法において、2次元の圧
縮が施プ1.たカラー飽淡両俟信号る、カラースキャナ
で公知の色演算回路(2)ね差動I着幅益し]ノ〜(g
7)、A/D変換器(例〜(至)、フォーマ−、l−変
換回路(ハ)等から構成さ1ている。In the method according to the present invention, two-dimensional compression is applied to the third file 1. A known color calculation circuit (2) for color scanners that outputs both color saturation and lightness signals.
7), an A/D converter (for example), a former, an l-conversion circuit (c), etc.
第1図に示す如き78成の読みルり部で読みとらフ1、
た画像信号Ro 、 Go 、Bo Vi、次に色7“
−/算回路いりによって必要な処理が施きノ12、C1
M、Y、にの4色インキ量に相当する色版信号に変換さ
1]、る。さらにアンシャープ信号C)M、Y、におよ
びMの各色版信号r(図示のごとく附加されてカラー原
1i1jのディテールに相当する部分が強調ジノ1だ色
版信号Go 、 Mo 、Yo 、Ko とMl が作
り出さnる。As shown in FIG.
image signals Ro, Go, Bo Vi, then color 7"
-/Necessary processing is performed using arithmetic circuits No. 12, C1
It is converted into a color plate signal corresponding to the amount of ink of four colors M, Y, 1]. Furthermore, the unsharp signal C) is added to M, Y, and each color signal r of M (as shown in the figure, and the portion corresponding to the detail of the color original 1i1j is emphasized). Ml produces n.
なお、本来であ1つば、画像信号RO1GO1DOがん
t取ら几た走査線の画素に隣接する走査線Fの、画像信
号G1 がかr取らnまた画素についてVま、ド11保
信号01 に対応する色版信号を色演算回路拗から出力
すべきであるが、1iII]I素程度の隔たりであれば
、この種の画像信号iij (7’)相r9J性から云
ッテもC,M、Y、に各色版信号とも急敞に変化する度
合は少なく、仮に変化したとしても微小部分においては
人間の現覚がそ几程の職別能力を有[2ないため、画像
イN′+3′G1 に対応する色版信号は、画像信号G
Oに対応する色版信号で代用しても実用干支]享はない
ものとし、該色版信号に、画像信号G1 を読取っだ1
jlij累のディテール強調信号Δ1 を加鐘すること
によりディテール強訴さ11.た色版信号M1 を作成
している。In addition, the image signal G1 of the scanning line F adjacent to the pixel of the scanning line where the image signal RO1GO1DO was originally removed is taken, and the pixel corresponds to the signal 01. However, if the difference is about 1iII]I elements, this type of image signal iij (7') phase r9J nature also indicates that C, M, The degree to which each color plate signal changes suddenly in Y, is small, and even if it does change, the human sense of perception is not capable of that much in minute parts [2], so the image The color plate signal corresponding to G1 is the image signal G
Assuming that there is no practical zodiac sign even if a color plate signal corresponding to O is substituted, the image signal G1 is read into the color plate signal1.
11. Detail is emphasized by adding the detail emphasis signal Δ1 of JLIJ. A color plate signal M1 is created.
次にとnらのアナログ信号に対して出プ月i+ij像の
複製倍率にあった画素ピッチでのサンプリングを行うた
めに1第1図の原画シリンダ(])と同軸に数句けらノ
]5たシ1示しないエンコーダにより作り出す几た基本
クロック信号が、公知のタイミングパルス発生装置によ
り、そのタイミングを調整さ1.てA / D変換器(
ト)〜−功に入力σn、る。’Cf1.V(、よりCo
、 Mo 、Yo 、KOおJ:びMl のイ夙月に
1、出力画像の複製倍率に応じた画素ピッチ毎に、例え
ば8ビツトのディンタル信号しζ変喚ζ)7、次段のフ
ォーマント変換回路((;(に入力部れる。とのフォー
マット変換回路峙は一種のデータ選択回路であり、舎版
信刊Co 、yo 、Kn jづ出力画素ピッチに対応
l〜だクロック信号が2個人力孕21、るだびに、また
色版信号Mo 、M+ は当該クロック信号が入力する
たびに、そ几ぞ几あらかじめ定めらガた順序で出力さ几
る。Next, in order to perform sampling at a pixel pitch that corresponds to the replication magnification of the output image i+ij for the analog signals of and n et al. 1. 1. A basic clock signal generated by an encoder (not shown) has its timing adjusted by a known timing pulse generator. A/D converter (
g) ~-Input σn, ru. 'Cf1. V(, more Co
, Mo, Yo, KO, J: and Ml, for example, an 8-bit digital signal is generated for each pixel pitch according to the reproduction magnification of the output image. The format conversion circuit with the input section is a kind of data selection circuit, and corresponds to the output pixel pitch. Each time the clock signal is input, the output signal 21, the color plate signal Mo, and the color plate signal M+ are outputted in a predetermined order.
すなわち、不実側例では、再4図に模式的に示す如く、
圧節単位領域を2 X 2 ii素の仙域とし、色版信
号Mのみ明度を代表する値として、全画素出力し、色版
信号C,Y、には工種単位t1域内の代表画先位置での
み出力してその他の画素では省略するものである。なお
、図中の添字(00) 、(ol) 、σC)、αηは
そノtぞ1tの画素と代表面素との位6%係を示すもの
である。したがって、第5図て示すような圧縮単位領域
4画素分ごとにひとまとめにさ几だフォーマットに集約
さ第1.で、後段の画像処を使用して、そのま捷、例え
ばレイアウト処理等の編集作業を行うには読取ら几た画
像信号の画素密度が出力画像の画素ピゲチに対応してい
ることが望ましい。In other words, in the unfaithful example, as schematically shown in Figure 4,
The compression unit area is a 2 x 2 ii elemental area, and only the color plate signal M is output for all pixels as a value representing the brightness, and the color plate signals C and Y are the representative image tip position within the work type unit t1 area. It is output only for pixels and omitted for other pixels. Note that the subscripts (00), (ol), σC), and αη in the figure indicate the 6% relationship between the pixel of 1t and the representative surface element. Therefore, as shown in FIG. 5, each compression unit area of 4 pixels is grouped together into a format. In order to perform editing work such as layout processing, for example, using a subsequent image processor, it is desirable that the pixel density of the read and refined image signal corresponds to the pixel density of the output image.
通常、出力画像の画素は一定であるだめ、例えば特開昭
54−35613、特開昭54−65601のように、
同一画素の画像信号を重複させたり、所定の画素ごとに
画像信号を間引いて記録することにより変倍するのでは
なく、原j…IVc忠実な 変倍を行なうためには、画
イ)信号の入力段階で複製倍率に見合った適切なサンプ
リングピッチと単位読取り領域(1画素として実際に読
取る範囲)を設定することが必要で、従来のカラースキ
ャナにおいてはこの単位読取領域の設定を入力部のアパ
ーチャ、−径を適宜選択することにより対応している。Normally, the pixels of the output image are constant; for example, as in JP-A-54-35613 and JP-A-54-65601,
In order to perform magnification that is faithful to the original image, instead of duplicating the image signals of the same pixel or recording the image signal by thinning out the image signal for each predetermined pixel, it is necessary to At the input stage, it is necessary to set an appropriate sampling pitch and unit reading area (the range that is actually read as one pixel) commensurate with the duplication magnification.In conventional color scanners, this unit reading area is set by adjusting the aperture of the input section. , - This is handled by appropriately selecting the diameter.
すなわち、実際のカラースキャナにおいては、倍率設定
範囲をいくつかの小範囲に区分し、各区分ごとに適切な
径のアパーチャーを選択、使用しているが、かかる1走
査線上の画素を+1vr次走査(−で1irll像信号
を読取るタイプのカラースキャナでは、ピックアップレ
ンズとしてズームレンズを使用することにより主走査方
向および副走査方向のザンブリングピッチは勿論のこと
、複製倍率の連続的な変化に対する単位読取り領域の調
整が可能である。In other words, in an actual color scanner, the magnification setting range is divided into several small ranges, and an aperture with an appropriate diameter is selected and used for each division. (For color scanners that read 1irll image signals at -, by using a zoom lens as a pickup lens, it is possible to adjust the unit reading for continuous changes in duplication magnification as well as for the zumbling pitch in the main scanning direction and sub-scanning direction.) The area can be adjusted.
しか(7ながら、本発明に係る方法の如く、1回の走査
で隣接1−た例えば2本の走査線を同時に走奔[−で画
像信号を読取る方法においては、アパーチャー径の選択
によって走査線」二の各単位読取領域の調整は可能であ
るが、各単位読取領域のピッチ間隔すなわち秒、取り+
ii+1素間の距離をH周整することは困難である。However, in the method according to the present invention, in which one scan, for example, two adjacent scanning lines are simultaneously scanned [-], the scanning line can be read by selecting the aperture diameter. It is possible to adjust each unit reading area, but the pitch interval of each unit reading area, that is, seconds,
It is difficult to adjust the distance between ii+1 elements to H.
そこでピックアップレンズとしてズームレンズを使用す
ると、単位読取領域と口1t、取り画素出1の距離の調
整が同時知行ない得るため、アパーチャー径を交換する
必要がなくなり複製倍率の1−史Vども充分に対応する
ことができる。Therefore, if a zoom lens is used as a pickup lens, the distances between the unit reading area, aperture 1t, and pixel output 1 can be adjusted at the same time, so there is no need to change the aperture diameter, and the reproduction magnification of 1-history V is sufficient. can be accommodated.
このようにすれば光ビーム分割手段(3)以後の光学系
には手をつけないで済むが、ズームレンズの設定倍率の
変更に従って、光電変換素子(81) 、 (91)
、 (101)、(92)の後段に設ける谷増幅器のゲ
イン調整あるいは照明光量の調偕拝の対応が複軸−にな
るので、倍率変更があっても、そn、に同期する自動絞
り機構がついたズームレンズを使用している。In this way, the optical system after the light beam splitting means (3) does not need to be touched, but as the set magnification of the zoom lens is changed, the photoelectric conversion elements (81), (91)
, (101), (92) Since the gain adjustment of the valley amplifier installed after (92) or the adjustment of the illumination light amount is multi-axis, even if there is a change in magnification, the automatic aperture mechanism synchronizes with the change in magnification. I am using a zoom lens with a .
゛また、画像信号Go 、Gi が読取らn、る原画上
の対応距随す々わち読取り回1素間の距離の調整が、設
定倍率に対1〜で厳密なものではなく、例えば段階可変
でも良いと割り切るなら、原画と光ビーム分割手段捷で
の距離は一定でその曲の結像倍率が異なる複数のレンズ
を準備し、こ才めな倍率設定((対しては準備は71だ
(h’、Filのレンズの中から、一番近いものを)き
択[小用するようにしてもよい。このときは、レンズご
とに絞り値をかえて光重、変換素子にあたる光愉を一定
に保てば良い。゛Also, the adjustment of the corresponding distance on the original image that the image signals Go and Gi read n, that is, the distance between one element per reading cycle, is not strictly 1 to the set magnification, but, for example, in stages. If you decide that variable is fine, prepare multiple lenses with different imaging magnifications for the song while keeping the distance between the original image and the light beam splitting means constant, and use a clever magnification setting ((For preparations, 71 (H', Fil lenses, choose the one closest to you) (You may choose to use a small one. In this case, change the aperture value for each lens to increase the light weight and the light intensity that hits the conversion element. Just keep it constant.
上記において、原画シリンダ1回転にともなうrdl−
、み惚り部の機械的な副走査送りピッチは、倍率を4屡
した上で圧縮単位領域、本実)、鈎例の場合は2画累相
桶分の送り曽が必要であることは言う壕でもない。In the above, the rdl-
, the mechanical sub-scanning feed pitch of the sub-scanning section is determined by multiplying the magnification by 4 times, then calculating the compression unit area (honjitsu), and in the case of a hook example, it is necessary to have a feeding distance of 2 strokes. It's not even a moat.
また本実施例では、画像読み取り部を特開昭58−12
3540 月に開示ざn、た光学系を使用しで説明した
が、かわりに特開昭58−137361 号に開示ζ几
た光学系を使用しても同時に実施できるものである。In addition, in this embodiment, the image reading section is
Although the explanation has been made using the optical system disclosed in JP-A-58-137361, the present invention can be implemented at the same time by using the optical system disclosed in JP-A-58-137361 instead.
(へ)効果
この発明に係る画像信号読取り方法によれば、不要な信
号tま最初から読取らず、原画シリンダ1回転の間に実
時間で2次元の圧縮が7’:Jnだ画像信号が得らする
ためスキャナ入力部の構成が簡単になるとともに、得ら
れた画像信号をいったんメモリ装置に書込む必要がある
ような場合でもその容量を大幅に低減でき、1〜かも圧
縮単位領域ごとvcH集作業を行なうことができるため
、編集速度を圧縮率の逆数に比例して速め乙ことができ
る。したがって画像データ処即全体の処理速度の高速化
を図ることができる。(f) Effects According to the image signal reading method of the present invention, unnecessary signals t are not read from the beginning, and two-dimensional compression of 7':Jn image signals in real time during one rotation of the original cylinder is performed. This simplifies the structure of the scanner input section, and even if it is necessary to once write the obtained image signal to a memory device, the capacity can be significantly reduced, and it is possible to Since the editing process can be performed, the editing speed can be increased in proportion to the reciprocal of the compression rate. Therefore, the overall processing speed of image data processing can be increased.
寸だ、倍率設定の変更に対[7て、副走査方向の読み取
りピッチを倍率設定値に見あったものにイ11易に変更
することができ、原画像と出力画像間の変倍について間
がか生じることもない。It is possible to easily change the reading pitch in the sub-scanning direction to match the magnification setting, and there is no need to change the magnification between the original image and the output image. There is no problem.
第1図および第2図eJこの兄1!Jiに1糸る画像読
取す方法の1例を説明するだめの概要図であり、ti′
C3図(Sl同じくこの発明に係る方法に使用さ1゜る
画像信号の処理回路の一例を示すブロック図であり、第
4図は本発明に係る方法により入力さ几た画像信号を模
式的に示したもので、第5bjは第3図のフォーマット
変換1rjl路から出力さnた信号のデータフォーマッ
トな示す模式図である。
(1)・・・原画シリンダ
(2)・・・ピックアンプレンズ
(3)・・・光ビーム分割手段
(4t) 、 (42)−・・レンズ
(5)、(6+) 、(62) 、 (7)・・・グイ
クロイックミラー(8)、(9i) 、(92) 、(
1,c4・・・光軍使換素子fgiダ・・・色演嘗回路
いり・・・フォーマット変換回路
第1図
第2図Figures 1 and 2 eJ This brother 1! This is a schematic diagram illustrating an example of a method of reading an image by one thread in Ji, and ti′
Figure C3 (Sl) is a block diagram showing an example of an image signal processing circuit used in the method according to the present invention, and Figure 4 schematically shows an image signal input and processed by the method according to the present invention. 5bj is a schematic diagram showing the data format of the signal output from the format conversion path 1rjl in FIG. 3. (1) Original image cylinder (2) Pick amplifier lens ( 3)...Light beam splitting means (4t), (42)-...Lens (5), (6+), (62), (7)...Gicroic mirror (8), (9i), (92) , (
1, c4... Light military switching element fgi da... Color rendition circuit required... Format conversion circuit Figure 1 Figure 2
Claims (1)
の走査線に対応する各iif++素の像を、少なくとも
そJlらの走査れ?をカバーする単一の走査光ビームで
順次走・Iイ[2、核走肴光ビームによって走fさγし
た各画素の像を、単一のビックア・ツブレンズ及び九ビ
ーム分割手段を備えた色分稍i光学系を介1.て光電変
換素子に投影することにより該個数の走査線に対応する
所要の画像信号を同時に得るに際【2、前記複数の短径
線上の隣接する複数の画素r(よって構成さ第1、る圧
縮単位領域を設定し、該圧縮単位領域内の各1)!l
像信号のうち、少なくとも1つを残l、た他のilI!
l像1M′月を、虐定の!幻係をもたせながら′6略し
てiた取るようにしたことを特徴とする両イW信号の読
をり方法。 2、単一のピックアップ 、 9が智宏旨5.訪求の範
囲第1項記載の画像信号の読取り方法。 6、単一のピ・フク゛アップレンズをあらかじめ用意し
た結像倍率のi4なる鈎数のレンズの中から適11′選
択できるようにした、特許請求の範囲第11記載の画で
8・信号の読取り方法。[Claims] 1. The image of each iif++ element corresponding to the scanning line of the frame adjacent in the fi11 scanning direction on the color original image is scanned at least by those Jl. The image of each pixel scanned by the scanning light beam is sequentially scanned by a single scanning light beam covering the area. Through the optical system 1. When simultaneously obtaining required image signals corresponding to the number of scanning lines by projecting them onto a photoelectric conversion element, [2. Set a compression unit area, and each 1)! in the compression unit area. l
At least one of the image signals is left, and the others are left!
l Statue 1M' month of abuse! A method for reading both iW signals, characterized in that '6 is abbreviated to i while giving a phantom value. 2. Single pickup, 9 is Tomohiroji 5. Scope of visit: 1. The method for reading an image signal according to item 1. 6. The image according to claim 11, in which a single image pickup lens can be selected from pre-prepared lenses with an imaging magnification of i4 and a hook number of 8. How to read.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59040968A JPS60185469A (en) | 1984-03-03 | 1984-03-03 | Reading method of picture signal |
GB08504874A GB2155274B (en) | 1984-03-03 | 1985-02-26 | A method of and apparatus for recording an image |
DE19853507351 DE3507351A1 (en) | 1984-03-03 | 1985-03-01 | METHOD FOR READING AN IMAGE SIGNAL |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59040968A JPS60185469A (en) | 1984-03-03 | 1984-03-03 | Reading method of picture signal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS60185469A true JPS60185469A (en) | 1985-09-20 |
Family
ID=12595263
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP59040968A Pending JPS60185469A (en) | 1984-03-03 | 1984-03-03 | Reading method of picture signal |
Country Status (3)
Country | Link |
---|---|
JP (1) | JPS60185469A (en) |
DE (1) | DE3507351A1 (en) |
GB (1) | GB2155274B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60212063A (en) * | 1984-04-05 | 1985-10-24 | Dainippon Screen Mfg Co Ltd | Editing method of picture signal |
US4905079A (en) * | 1986-10-28 | 1990-02-27 | Canon Kabushiki Kaisha | Color image processing apparatus for processing separated color signals |
US4922333A (en) * | 1988-12-15 | 1990-05-01 | Eastman Kodak Company | Video copying apparatus spectrally-responsive to slides or negatives |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5522708A (en) * | 1978-08-04 | 1980-02-18 | Dainippon Screen Mfg Co Ltd | Method and apparatus for recording of color image |
JPS58123540A (en) * | 1982-01-19 | 1983-07-22 | Dainippon Screen Mfg Co Ltd | Original image scanning method in image scanning recording |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1951681C2 (en) * | 1969-01-15 | 1982-06-24 | International Business Machines Corp., 10504 Armonk, N.Y. | Document scan colour data compression - has data compression circuit on OR-gated photocell sensor output to reduce data capacity requirement |
FR2524740B1 (en) * | 1981-06-02 | 1986-09-19 | Thomson Csf | METHOD FOR COMPRESSING A DIGITAL IMAGE |
JPS589145A (en) * | 1981-07-09 | 1983-01-19 | Fuji Photo Film Co Ltd | Color scanner for photoengraving |
JPS58137361A (en) * | 1982-02-09 | 1983-08-15 | Dainippon Screen Mfg Co Ltd | Original picture scanning method during picture scanning and recording |
-
1984
- 1984-03-03 JP JP59040968A patent/JPS60185469A/en active Pending
-
1985
- 1985-02-26 GB GB08504874A patent/GB2155274B/en not_active Expired
- 1985-03-01 DE DE19853507351 patent/DE3507351A1/en not_active Ceased
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5522708A (en) * | 1978-08-04 | 1980-02-18 | Dainippon Screen Mfg Co Ltd | Method and apparatus for recording of color image |
JPS58123540A (en) * | 1982-01-19 | 1983-07-22 | Dainippon Screen Mfg Co Ltd | Original image scanning method in image scanning recording |
Also Published As
Publication number | Publication date |
---|---|
DE3507351A1 (en) | 1985-09-05 |
GB8504874D0 (en) | 1985-03-27 |
GB2155274B (en) | 1988-03-23 |
GB2155274A (en) | 1985-09-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5136665A (en) | Two-sided original reading apparatus | |
US10511785B2 (en) | Temporally aligned exposure bracketing for high dynamic range imaging | |
JPS58137361A (en) | Original picture scanning method during picture scanning and recording | |
JP2575592B2 (en) | Method and apparatus for removing color from multicolor image documents | |
US4556901A (en) | Method for scanning a plurality of scanning lines at the same time | |
JPH04138770A (en) | Shading correction method | |
JPH05103336A (en) | Color video signal processing device and color correcting method for color video signal | |
JPS60185469A (en) | Reading method of picture signal | |
US7545991B2 (en) | Image data processing method and recording apparatus allowing original image of broad dynamic range to be reproduced | |
JPH1065923A (en) | Image processing method and device | |
JP2578409B2 (en) | Image processing device | |
KR100475284B1 (en) | Light source correction device of digital still camera | |
JPH01319370A (en) | Photographic film player | |
JP3058481B2 (en) | Color separation method for electronic blackboard and color separation device | |
JP2672541B2 (en) | Image processing device | |
JP3049740B2 (en) | Image input device | |
JP2002014456A (en) | Digital plate making system and plate forming method | |
JP2648859B2 (en) | Color image reader | |
JP2000004366A (en) | Image reader | |
JPH077618A (en) | Method and device for processing color value | |
JP2022008037A (en) | Image processing device, method for controlling image processing device, and program | |
JP2766012B2 (en) | Color image processing equipment | |
JPH066601A (en) | Picture reader | |
JPH04291575A (en) | Image scanner | |
JPH04320156A (en) | Picture input output device |