JPS59171252A - Picture processing device - Google Patents

Abstract

PURPOSE:To always discriminate clearly a monography such as a character synthesized into a picture by changing the reproducing state of the line picture according to color tone or contrast of the picture being a background. CONSTITUTION:When all input picture densities of yellow Y, magenta M and cyan C exceed a set value, each output of comparator circuits 42-44 of a dark tone extracting circuit goes all to ''1'' and a picture element is stored in a memory for dark tone. Further, in setting, for example, switches 46, 47 to a high density and a switch 48 to zero, the Y, M are high density and the C is a part (dard tone) of low density, and the dark tone is reduced to a red background color. Then, in outputting characters and printing out them, when a character section is a print dot and a value read from a dark tone memory to the same picture element is at ''1'', an output of an AND gate goes to ''0'', and characters which are made white therearound are outputted, and when the background part is at ''0'' (white or light color), the output of the data goes to ''1'' and the characters are printed out.

Description

[Detailed Description of the Invention] t,! The present invention relates to an image processing device for synthesizing line images such as images and characters.

Inno) 1 East I; Technique Traditionally, halftone images are copied using a duplicating device called ``1'', which involves writing letters on both halftone images. The copy paper obtained in step 1 was then bound to a printer and used in a printer device that can print hard copies of characters, thereby making the characters appear in half-tone images. However, this method is twice as time-consuming.
47 The positioning of the image and text is not consistent, it is complicated, there are many problems, and it is not practical. On the other hand,
Figure 1 shows a small frame of a conventional copying machine and a line printer (
For example, a multifunction copying device is known that combines a laser beam printer and a laser beam printer. In the device shown in Figure 1, the original fi
8 units 50 (superimposes and displays the copy image of the placed original and the printer character output input from an external device (not shown) (f+llλ is the host)/computer by inputting the error line 63 at 12). So, on double q paper 61, there is a door "-71.
It is something to do. Jl: + The manuscript table 50 has an exposure lamp 51
The light reflected from the document platen 50 is exposed to light through the mirrors 51 to 55 and the lens 56, and the drum E]
An image is formed on the surface of the document 9, and a static image corresponding to the original is formed.

power, outside 8 (not shown)] (I; +: from i, I), turn, - The control circuit 62 is powered by human power, and character information +1.!
is converted into 1,'' in the control circuit 62.
The laser light from the 1' conductor 1--ther 64 is modulated and output.

57 is a rotating polygon mirror for horizontally scanning the laser beam.

By modulating and scanning the laser beam in this way, 1:, and in the same way as mentioned above, Table (2) of Chidram 59...
The electrostatic latent image force 1 of the character image is superimposed on the electrostatic latent image 1 of Soda.
Become □ Become. Thereafter, a final copy image in which a halftone image and characters are superimposed is obtained by the same process as the normal electrophotography X1 of development, transfer, and fixation. However, in this device, halftone images and character images are processed independently;
For example, even if text is superimposed on an image 9 with many black areas, it will be difficult to see the text as shown in Figure 2. , the characters cannot be distinguished.

Aspects of the Invention r+i+ The present invention was made in view of the drawbacks of the conventional art, and the line drawings of characters etc. that are synthesized into an image are always 1v l:! regardless of the background.
I can do lff1J. J provides new image processing equipment
1i is set as l09.

Example The present invention will be described in detail below with reference to the five drawings.

,,,3rd. The figure is a block diagram showing an entire embodiment of the present invention.
° is a character image.The character coffee string signal as shown in Figure 4 as the character image chip i'O1 is the main power, and the 4 R, G, H as shown in the seventh position □ as the teller image data. ' Misaki signal 16 □ 4 rows and vertical and horizontal synchronization signals 106V, 106
) () is supplied from the outside.Furthermore, image trimming position designation signals 102 and 103 are supplied.

107 and 108 are also supplied from outside. ,.

FIG. 4 shows a character image data string signal, -Image header identification code 1. , , T, 01F contains: subtraction, followed by the character string data of the first line, C: Io, 1CIl, C1λ·--1-. Also, after the @ end: character of each line, R
1 EIT code has been inserted.・Catch it and send it to the receiving side (
In other words, if an RE or T code is detected on the image processing apparatus side), a line feed is performed. In Figure 4,
R1 is the RET code on the first line, R2 is the RE on the second line
It is a T code. An end code IEND for the one-character image is inserted next to the last line in the one-character image to mark the end of the one-character image data. In this image processing system, these 1. Receive EN, D, - (1 from the JT door)
End of text image! identify

The character image 1.9.1 supplied as described above is stored for one screen in the character code buffer 1.0.

At this time, the above-mentioned special code (for example, ITOP code 1
The eup R' attack T code, , I E N D code) is
It is decoded by the character code decoder 1.1 and sends a storage start/reset command message 1095 and a storage end signal fJ,0 for character image storage.

Figure f35 shows an example of a character screen stored in this manner. Here, each letter A, 4, B,, + -,
---a, +b, c, T-7- are represented by, for example, an 8-bit ASql, I code. In the tree/example, a laser beam method using dot images is adopted. Then, it is necessary to convert the 1, 4, character, and -do string into the form of do, 1, and so on. for that,
On the Kinomi style side, using 9 character generators 9, the dot conversion is performed by Gaga. The character generator 9 is the same as the well-known one, so a description thereof will be omitted. At this time, an area information signal 102 (i.e., information specifying row 9 and column 9 of the character code image) indicating which area of a character image supplied from the outside should be printed out is given from the external device = , for example, the fifth. In the character code picture I town shown in the figure,
Print out, the starting character and ending character are (I11+
, +”U) ~ (m2, +R2,,).The area within the thick line shown in the figure is the character code buffer, file 1.
It is read from 0. And area information-1't I
Printout 1 and specified information (m
x, Fn+), <112, R2), the read position designation circuit 17 and read address generator 18 generate read at and address signals for the designated area. .

-, ``In which area of the print image should the character image area specified above be printed out?'' The area specification is 1. This is done by signal 10.3. Writing for printout, writing area, writing,
, pixel number, scanning line number, number ('l',
n1', ) + same number of writing end position (mz' + I
'+2'＞ ≠) is returned, image memory write position specification system ti11 circuit 15 and υ・Image I Mori Atoshi Sujiyonet, - Yu 14 by Inoino Shinomo 2
The writing to No. 8, the inscription at t7.su is complete.

With this change, the character code image 1 in the erectile area is read out from the character code Hanwha 10, and the character code image 1 in the erect area is converted to I-nt data by the energizer 9, and the image is stored in the memory 8. When the child is 1 year old, the key finger is stored in the f area.
B + This is not shown.

1) (1) as dark IK data for each color of R, G, and B
, 1 (The processing of the supplied color halftone image will now be explained in 1''. This color halftone image is shown in FIG. 7 as R, G, etc.).

Bcr) Color perception)) Lii, -i-+-; 104, Le direct 1 and water-Y' Iruj) Linoi t1 106 V,
], 06 HSlchi+, lH for each pixel of the Z image: 105 composed of 105 141-color image 1, R, G, B colors Identification A, -, Ke1, f-14 Yasuko1, Color, L-te: Each color (rl's buffer memory 28-issue, 28-2, 28
-3 (T) is stored.

Period(,;(;106 Vt3J:HiL O6HI;l
[In-axis 71' L/S is supplied to the generator 32, and the address selector 30 gives the necessary atto L/S to the image handler 77 memo 1) 28-1.28-2.28-3. Thus, each color image is stored in image buffer memory:
98-1.28-2.28-3, respectively.

Thereafter, in the same way as when reading out the character code, a halftone image is printed out using the externally supplied A5; Bow 1.07. This IJ is obtained with the printout fragrance, scanning line number, and the corresponding image memory 2
8-1. , 28-2, 28-3 are generated from the read address chain 17.-31.

When reading 1~, the image of the Yellow (Y) river...
Knee 7 Memory (B Haku wo Su I at'..)) 2
B-1.

Masenku (M) [Image of t ■ / Shi Noah Memory (C
28-2, Schiff 7
(C) 2 pixels for each pixel/l from 28-3, Noah memory (R i = store 1-l)
Y, M, C components to j7 times I+! , 1 insult was taken out. (Here, the names of B, G.R (, -, take the complement of the bow and are expressed as the i1, bow of Y, M, C.) In this way, 7.: Filled out. The C7-color 1iQ is ultimately stored in the image memory 21 for the 1J halftone image, or is printed in the designated image area as described above (printed in the 'v' position). In order to be played out, an old start position +7'7 is specified by an A6 bow 108 supplied from an external source (not shown).

After receiving this, the image memory write position designation circuit 23 and the image memory 7 address generator 22
generates the address of the specified position: , i) white, pair I center image ゛ shi thousand 2) 2 This operation is
It is similar to J321 in the character image data force mentioned above.

C3, Iso--Mini \Nfame (・su213-1.
The color C converter for each pixel read from 78-2 and 28-3 and multiplied by 1'11 is calculated as follows:
In ゛/, the comma conversion (] dark I ↓ 1 conversion) that matches the #1j + t of the unprocessed image processing device is done, and in addition, the well-known Ichib, Suyani, Kuta 1 ↓ process in the field of printing technology I/D 1 (
2B nonjjj%) and υ・UCR processing (see 25), and then undergoes disa processing (see 24) and then t. -,
-1, in the image memory 21 specified as described above! l
Data (1) and (1) to (1) are stored in the 11' position.

As is well-known, dither processing is used to convert density data for each pixel into [! Comparing ζ1x and t respectively refers to the electrical equation that determines the output 1'' power It dot.

On the other hand, numerals 35 and 36 indicate a dark tone extraction circuit and a dark tone memory for storing the data 1 and 74 (l). As shown, comparison circuits 42 and 43.

44, switches 46, 47, 48 are constructed. Suiri-mi 48, 47, 487, IJlj, Y(ye I-2-i, M(-
'8-tr).

Calculate the Nao 1 limb component-l of C (Shia 2). Comparison circuits 42, 43, 441 years old input image re I?
i C7) Y, M, C component 4 and switch 4
6, 47. Compare the setting I1^ set by 48, L, human image density component amount is set (F (outputs "1" for pixels exceeding i. Y, M , C when the human power 1 direction image l agricultural 1a exceeds 1 sink crab (+/j), the outputs of the comparison circuits 42, 43.44 42-1.43-1;
Since the pixel 44-1 becomes the rl'4, it is regarded as the pixel 1 otaku part, and is stored in the gooktone memory 36 shown in FIG.

At this time, data is written to the dark tone memory in the same way as data is stored in the image memory for halftone images.
It is written in accordance with the address 118 which is specified from the outside and generated by the address generation circuit 22. Further, in this configuration, the switches 46' and 47' of FIG. 8 described above are used.

By changing the 48 settings, you can freely change the color that is considered to be a stimulant. For example, set Sinch 46 and '47 to high density, and set Sinch 48
When is set to zero, the part where 72M is high density and C is low density, ie, the "red" part becomes the father-chthone, and it is possible to use this as the "ground color".

In order to read out the data from the character image image memory 8 and the halftone color image image memory 21 and send it to the laser light modulation circuit 5, these image data are transferred to the image memories 8, 21 and the digital image memory 21. Each pixel is stored in the memory 36 as driver i data, and the same address is assigned to the same pixel.禾：In the example, both image memo IJ "'8","
Memo 93 for ``2''1'' and dark l-''-
6 is controlled by an image memory address generator '14'. That is, a read address is generated at the time when an image is stored in both image memories 8 and 21, and a character corresponding to the same pixel,
The dot data of the medium 'iA' tone image, the dot data of the character image read out from the image memory 8 and the dot dark of the halftone image read out from the image memory 21 are υF otherive, respectively. ′ that acts on ′. In other words, the character □ character □ is output, it dies in the printout "B°", and the ground i′ part □, that is, the value for the same pixel is read from the memory for dark tone.
Pi (samemo□ji□gauri) - 7”) It@
”, the output of ANDKATE 37 is '0°', and
” is output. Also, when the ground part is "'0", that is, white or light colored. The output of Antogame 1/37 is “1”
' and character printing is performed.

- When printing a half-tone image, the character part is printed I, that is, the signal 11'5="BI", and the output of the AND gate 38 is 0゛° regardless of the image data 116. Therefore, the image does not appear where there are characters. Therefore, white is realized. In other words, the halftone image dark is output at 111r of lfB (115="0°°) where there is no character. be. In this way, the output image is, for example, the 9th
It will look like this. As can be seen from the figure, the parts with a dark tone or solid black 811 can be printed out with white characters, and the parts with a white background can be printed out with black or other medium-colored characters (described later). 39 is a selector for text and medium-tone images,
The signal 114 output from the control circuit 1'16 controls the control so that A: and C are connected when outputting a sentence 4'f' image, or B and C are connected when outputting a halftone image. J is kidnapped.

The dark dots read out from the image memories 8 and 21'' modulate the laser beam. The modulated laser beam forms an electrostatic latent image on the photosensitive drum meter 1.

Pudding!・The process to create an image is the same as a normal laser beam printer, and there are □t, 'M, c,
Four types of developing devices (none of which are shown) are selectively used for printing (black). In addition, signal 113 is a horizontal synchronization signal i sent from this Shinji 1□ detector 4, 0 when the laser beam detector 40 is irradiated with a laser beam, and is used to read image data from image memories 8 and 21. be performed synchronously.

This image processing device first reads out a yellow image □, then operates a yellow developing device (not shown) to obtain a yellow □ image, and then processes magenta, cyan, and black images in the same process. By sequentially aligning and overlapping □, a full-color image of four colors □ is obtained.

The signal +12 is a signal for controlling the color of the character image, and causes data to be output from the image memory 8 only when the color of 7J is to be printed. Similarly, when reading a small tone image from the image memory 21, it is also possible to read out only a desired color image (1211) to obtain a medium color or gold color image.

Therefore, 1) IJ statement [7 tags, 1'ri 11e 1.1
: When printing 7 characters in yellow, set only the switch 46 in Figure 8 to high density jI (and set the other 47.4'8 to low density: IJ1 is in the middle, :g + both images) Only the yellow part is regarded as the background, and the yellow characters and the halftone image can be clearly separated.

Figure 6 shows an example of moving the specified areas of both character images and halftone images separately and composing these two images; J'X'1-0f. Avoid moving the -C area for each of the images A and C,
tJj images B and D are combined to create image B+D
i)

In this embodiment, character patterns or other line drawing patterns may be stored in the image memory. Furthermore, in this embodiment, the output device and the L7 have been described using the sahim blink as an example, but the present invention is not limited to this, and can also be used for, for example, an IJ, a computer, a thermal printer, etc.

As explained above, according to the present invention, line drawings such as letters can be clearly reproduced regardless of the color of the line drawings such as letters, the tone of the image, and the density. , it is possible to eliminate the inconvenience of characters not being visible.

In addition, according to the invention, character images can be created manually using the Fugin code, so connections with other devices can also be made using JRF.
Therefore, a versatile image processing device can be obtained.

Furthermore, according to the present invention, halftone images and line drawings can be
Since it is possible to perform coloring, it is possible to perform image processing suitable for office processing after printing (for example, changing the color of data and text).

[Brief explanation of the drawing]

Fig. 1 is a diagram showing an example of a composite copying machine, Fig. 2 is a diagram showing a state in which letters are superimposed on I- in an image with many black areas, and Fig. 3
1 is a diagram showing an example of character image data; FIG. 5 is a diagram showing an example of a character screen stored in a character code source; FIG. 6 is a diagram showing an example in which designated areas of a character image and a halftone image are moved separately, and their inward surfaces are combined. FIG. 7 is a diagram showing an example of color dual-image data, FIG. 8 is a specific configuration diagram of a tone extraction circuit, and FIG. 9 is a diagram showing an image state obtained by the example. 8- ---Character image memory 9 ---Character code 10 ---Character coat coder 11 ---Interface 14, ---Image 7 memory φ A1 Miresu Generator 1.5 --- Image memory; 1) Reading position designation circuit 16 --- IJI control circuit 1.7 --- Readout position designation circuit 18 --- Readout A)・Response Generator 19--
--- B writing address generator 20 --- Address selector 21 --- One halftone image image memory 22---
Image memory address generator 23 --- Image memory write position designation circuit 24 --- Dither circuit, 25 --- U CR circuit 26 --- Masking circuit 27 --- Comma correction circuit 28-1. 28-2.28-3----Image/Henfu 7 Messenger 929----Interface 30----7 Tres Selector 31----Reading di l, Address Sienne Lake 32
----Write attenuation/line generator 33----1 read position 4 designation circuit 35------Turn 1/-on capture circuit 36---Turn tone river memory 39---Selectors 42 to 44 --One ratio (calibration circuit high--,,-,-,,,,,,-,,,,,-,-,,-
,,-1 convex image--------1----------
←Picture irises 6 easy 104--
---So---------------------1111 (X5V
−−Yu−−−−−−1−−−−−−−Ball−,,−,,,
,,-,,-JL-,,.

Claims (1)

[Claims] (i) +iii image and S! In the image processing device that outputs the λ image, it is possible to change the tone or dark color of the background image, and then change the raw state W of the 1j drawing. Image processing device with special features. (2) An image processing device characterized in that the tone or shade of the image to be recorded in claim 1 can be freely set.