JPH01222571A - Picture processor - Google Patents

Abstract

PURPOSE:To shift a picture of an area set by a mark to a desired position on a transfer picture face and to obtain a copy picture to be formed with simple operation by detecting the mark added onto the original and controlling the picture position on the transfer picture face based on the detected position of the detected mark. CONSTITUTION:Based on the detected position of the mark detected by a mark detection means, the picture position on a transfer picture face is controlled by a control means. For example, a color felt pen is used to give a mark onto an original thereby setting an area and the picture processing unit is operated in the mode moving (shifting) the picture. Then the mark detection means detects the mark and a control means based on the detected position shifts the picture of the setting area of the original to the preset desired position on the transfer picture face by the picture processing. Thus, the picture of the area set by the mark on the original is shifted to the desired position on the transfer picture face with simple operation and picture processing is applied on real time.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an image processing apparatus, and particularly to an image processing apparatus that can perform shift processing on a set area on a document.

[Prior art]

For example, an image processing apparatus such as a copying machine generally has a function of copying a document in its actual size or after enlarging or reducing it. Therefore, when it is necessary to copy only a portion of the original, or when there are parts of the original that would be inconvenient to copy, the original is cut and pasted or masked to make a copy. However, making copies in this way takes time and effort, so these days, it is possible to extract only the necessary areas or images from the original without cutting and pasting or masking the original. Various image forming apparatuses that form images have been proposed.

Specifically, using the numeric keypad provided on the operation boat, you can specify the area to be imaged by converting it into coordinates, or you can display the scanned original image on a display device such as a CRT, and On the display, click the cursor,
Areas are specified using a light ben, mouse, etc. In addition, a mark is placed directly on the document using a color felt-tip pen or the like so as to surround a desired area, and the mark placed on the document is detected by the mark detection means, and an image of the area where the mark is placed is detected. An image processing apparatus for performing the processing has also been proposed by the present applicant in Japanese Patent Laid-Open No. 159570/1983.

By the way, in the above-mentioned method of specifying an area by specifying coordinates using the numeric keypad and forming an image, it is troublesome to read the coordinates of the specified area of the document and input the coordinates, and in fact,
The area that can be specified is limited to simple shapes such as rectangles. Another problem with this method is that unless the document is accurately positioned and placed on the document table, the designated area will shift.

On the other hand, in the method of specifying an area while displaying the scanned original image on a display device, it is possible to specify the area freely, but the device becomes large and complicated, resulting in high cost, and it is difficult to wander while reading. Since it takes a long processing time to obtain a copy image, it is difficult to apply it to copying machines and facsimile machines used in ordinary offices.

In addition, the method proposed in Japanese Patent Application Laid-open No. 62-159570 allows you to set an area of any shape just by marking it, and performs real-time image processing on the set area. The image cannot be moved or shifted to a desired position on the transferred image plane. Therefore, in order to position the marked area at a desired position when copying, it is necessary to adjust the position of the document on the document placement surface (reading surface) in advance.

However, even if the position is adjusted in this way, the image is not always formed accurately at the desired position on the copy paper, and it is not easy to set the image position on the copy.

〔the purpose〕

This invention was made in view of the above technical background, and its purpose is to shift an image in an area set by a mark on a document to a desired position on the transfer image surface with a simple operation, and to transfer it in real time. An object of the present invention is to provide an image processing device that can perform image processing.

〔composition〕

In order to achieve the above object, the present invention provides an image processing apparatus that includes a mark detection means for detecting a mark attached on a document and performs image processing on an area set by the mark on the document. The configuration includes a control means for controlling the image position on the transfer image surface based on the detected position of the mark detected by the mark detection means.

With the above configuration, when the image processing device is operated in a mode in which an area is set by placing a mark on a document using, for example, a color felt-tip pen and the image is moved (shifted), the mark detection means is activated. The mark is detected, and based on the detected position, the control means performs image processing to shift the image in the set area of the document to a preset desired position on the transfer image surface.

Embodiments of the present invention will be described below with reference to the drawings.

The copying machine according to the embodiment is a digital copying machine, and the second
As shown in the figure, it is roughly composed of a scanner section 1, an image processing section 2, and a printer section 3. In the scanner section 1, for example, main scanning is performed in the X direction and sub-scanning is performed in the y direction, and the document is read and a timing signal D0 is generated as a read image signal D0 containing density information of 6 pits and 64 gradations.
0 outputted to the image processing section 2 along with C, the image processing section 2 performs the shift control described later, as well as the known shading correction, MTF correction, and trimming as disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 159570/1983. Image processing such as /masking is performed, and the binarized image data D, as well as a main scanning data valid signal LG and a sub-scanning data valid signal FC, which will be described later, are output to the printer section 3. The printer section 3 is a so-called electrophotographic laser beam printer, and prints a copy image based on the image data D from the image processing section 2 and timing signals such as the main scanning data valid signal LG and the sub-scanning data valid signal FC. Reproduce.

The image processing unit 2 includes an image data processing circuit for performing image processing such as trimming/masking, and a JP-A-62-1
59570, and a shift control circuit that performs shift control according to the present invention. Furthermore, when the shift operation is not performed, the same operation as the conventional one is performed.

The shift control circuit has a counter 4 as shown in FIG.
, comparator 5, latch 6, flip-flop 7, A
It mainly consists of an ND circuit 8.9 and a selector 10°11.

The counter 4 is an address counter, and its clear terminal CLR receives an inverted signal sound of a main scanning synchronization signal SY, which will be described later, and its input terminal receives a pixel clock signal CK, and the output from its Q terminal is sent to a comparator. 5 P
The signal is input to the terminal and the S terminal of the latch 6, respectively. The flip-flop 7 is a set/reset flip-flop, and a mark signal MK, which will be described later, is input to its S terminal, and a sub-scanning data valid signal in the normal mode, which will be described later, is input to the clear terminal CLR of the latch 6 and the reset terminal R of the flip-flop 7. The FGO leading edge signal FGST is input. The Q terminal of flip-flop 7, the gate terminal of latch 6, and the first input terminal of AND circuit 8.9 are respectively connected.

The output from the Q terminal of the latch 6 is input to the Q terminal of the comparator 5, and is ANDed with its output terminal P≧Q terminal.
A second input terminal of the circuit 9 is connected thereto. This AN
A main scanning data valid signal LGO in normal mode, which will be described later, is input to the third input terminal of the D circuit 9, and its output terminal is connected to the S terminal of the selector 10.

The A terminal of this selector 10 is set so that the main scanning data valid signal LGO is inputted, the S terminal is set so that a selection condition signal SFMD, which will be described later, is inputted, and the main scanning data is inputted from the Y terminal. A data valid signal LG is output.

The sub-scanning data valid signal FGO is input to the second input terminal of the AND circuit 8, and the output terminal is connected to the S terminal of the selector 11. The A terminal of this selector 11 has
The sub-scanning data valid signal FGO and the select condition signal SFMD are input to the S terminal, respectively, and the sub-scanning data valid signal FC is input from the output terminal Y.
is now output.

Here, before explaining the details of the operation, an outline of shift copying for shifting a specific portion of a document intended in this embodiment will be explained.

Figure 3 is an explanatory diagram of the original that is subject to shift copying;
The figure is an explanatory diagram of a copy that has been shifted. In other words, in a normal copy (this is called a normal mote),
The A3 size original 12 shown in FIG. 3 is scanned in the main scanning direction obtain.

In this case, as shown in the timing chart of the normal mode in FIG. 5, the main scanning synchronization signal SY is generated in the main scanning direction A normal mode main scanning data valid signal LGO is generated in synchronization with the signal SY. Further, in the sub-scanning direction y, a sub-scanning data valid signal FGO is generated in synchronization with the sub-scanning direction data being valid F, and FGST is generated as the leading edge signal of this sub-scanning data valid signal FGO.

Rise timing P of main scanning data valid signal LGO (
0, y) corresponds to the left edge of the original in FIG. 3, and the rising timing P(x, O) of the sub-scanning data valid signal FGO corresponds to the upper edge of the original. Note that in FIGS. 3 and 4, letters ABC, XYZ, and W indicate images on the original 12 or the copy 12a. Although not shown in FIG. 5, the image data D also naturally maintains a constant timing relationship with the main scanning synchronization signal sy, and the copy image is copied based on the main scanning data valid signal LGO1 and the sub-scanning data valid signal FGO. The timing is determined, and a copy identical to the original 12 is obtained.

In the normal mode, a signal is generated at the timing described above, and a copy identical to the original 12 can be obtained. However, in the shift mode, in which a specific part of the original is shifted and copied, the marks made on the original in Figure 3 are 13 determines the portion to be shifted. Strictly speaking, this position is determined by the mark tip address P (XM, YM) that occurs at the timing closest to the reference point P (0,0) within the area of the mark 13. In other words, the mark tip address P (X,,Y,) in Figure 3 is the shift copy 1 in Figure 4.
This corresponds to the upper left corner Pc (0,0) in the figure 2a.

The timing chart for shifting in this way is shown in Part 6.
As shown in the figure. In the same figure, the °C1 main scanning synchronization signal SY is the same as in FIG. 5, and the mark detection signal MK is XM,
As shown by XM'* First mark detection timing X
A signal MST is generated at M. This signal MST is reset by the leading edge signal FGST during the next reading scan.

The main scanning data valid signal LGI in the shift mode corresponds to the main scanning data valid signal LGO in the normal mode, and is generated in synchronization with the mark detection signal MK, and is generated in synchronization with the shift copy width L1 shown in FIG. corresponds to one cycle.

Further, the sub-scanning data valid signal FGI in the shift mode is the first mark detection timing X of the mark detection signal MK.
, 4, that is, in synchronization with the signal PJ ST.

Even in the shift mode, as shown in FIG. 5, the main scanning data valid signal LGO1 and the sub-scanning data valid signal FG
The O1 leading edge signal FGST is generated, and until the scanning progresses and mark 3 is detected, not only the mark detection signal MK but also the signal ST, the main scanning data valid signal LG1, and the sub-scanning data valid signal FGI are not generated. do not. The mark detection signal MK is generated for the first time when the position of the mark 13 is detected as the scanning progresses, and the first timing at which the mark detection signal MK is generated is at the start address This is the scanning timing of the first address Y14. The fall of the main scanning data valid signal LG1 and the sub-scanning data valid signal FG1 is determined by the timing of the main scanning data valid signal LGO1 and the sub-scanning data valid signal FGO in the normal mode, as shown in FIG. Also, in this shift mode, the image data D1 maintains a constant timing relationship with the main scanning synchronization signal SY, as in the normal mode.

Next, the shift operation by the aforementioned shift control circuit will be explained in detail.

First, the counter 4 is an address counter in the main scanning direction that is cleared for each main scanning by the inverted signal port of the main scanning synchronization signal SY and counts up by the pixel clock CK.The main scanning direction address signal QA is YoyoQ
It is input to the comparator 5 and latch 6 from the terminal.

The set/reset flip-flop 7 is set at the timing of the mark detection signal MK by the head signal FGST at the start of sub-scanning, and the signal MST is set at the timing of the mark detection signal MK.
Since the mark detection signal M becomes 'H' only after the occurrence of
The signal MST is ``L'' until the mark detection signal MK is generated, and naturally remains ``L'' until the end if the mark detection signal MK is not generated.Then, with the generation of the mark detection signal MK, the signal MST becomes ``L'' ``to 1H'', and at this timing, the address counter at this time, that is, Xs, is latched into latch 2. Before XM is input, latch 2
Since it is cleared by the tip signal FGST, the output Q is @
0", but at this timing the output Q changes from "0" to "
XN” and thereafter holds XM.

The comparator 5 compares the address QA input directly to the P terminal from the counter 4 with the output of Q input from the latch 6 to the Q terminal, and if P≧Q, the output from the output terminal P≧Q is It becomes "H", and becomes "L" when P<Q.

Therefore, as shown in FIG. 6, the signal P≧ becomes H'' at the timing of The signal becomes “L”.

The main scanning data valid signal LGI in shift mode is AND
The first circuit of circuit 9. Second. 3AND in which the respective inputs from the third terminal, that is, the signal MST from the flip-flop 7, the input from the P≧Q terminal from the comparator 5, and the main scanning data valid signal LGO, each become H''.
obtained when . In addition, the sub-scanning data valid signal FG
I is the input from the first and second terminals of the AND circuit 8, that is, the signal MST and the sub-scanning data valid signal FGo.
It is obtained when 2AND becomes "H".

The selector 10.11 selects either the input to the A terminal or the B terminal according to the select condition signal SFMD input to the S terminal, and outputs the selected one from the Y terminal. SFMD “
If the output is “L”, the output from the Y terminal is output from the A terminal, and the output is “H”.
Then, the B terminal is selected. As a result, if the select condition signal SFMD is "L", the main scanning data valid signal LG
The main scanning data valid signal LGO and the sub-scanning data valid signal FGO are respectively output from the Ym child of the selector 10.11 to perform normal mode copying, and the select condition signal SFMD is set to "H". If so, the main scanning data valid signal LGI and the sub-scanning data valid signal FGI are output, and copying is performed in shift mode.

In this way, the area starting from the part marked 13 of the original 12 in FIG. By outputting the image data D to the printer section 3 and printing it, an A4 size copy 12a as shown in FIG. 4 can be obtained.

Detection of the mark 13 is carried out as described above, for example, by
159570 is employed, the mark 13 may be detected by other methods, and the configuration of the shift control circuit is not limited to the configuration shown in FIG.

Further, in the above embodiment, the shift control circuit as a timing control circuit associated with the shift is provided in the image processing unit 2.
Although it is provided in the printer section 3, it goes without saying that a similar shift operation can be performed even if it is provided in the printer section 3. In this case, instead of outputting the main scanning data valid signal LG and the sub-scanning data valid FC by the shift control circuit as described above, the shift operation can be performed by controlling the image data and sheet feeding timing.

Furthermore, the mark position information can also be expressed as main scanning and sub-scanning address information and sent to the printer side, instead of expressing the position information by the mark detection timing as in the embodiment.

Next, other shift examples of the present invention are shown in FIGS. 7 and 8.

FIG. 7 is an explanatory diagram of the original 14, and FIG. 8 is an explanatory diagram of a copy 14a produced by shifting. The letters ABC, XYZ, PQR, and W in FIG. 7 are images, and in this example, marks 15.1
6 is applied respectively, and this mark 15.16 part is,
The original is shifted from the A3 version, and the portions other than the marks 15 and 16 are trimmed, resulting in an A4 version copy 14a. Also, P (XM, YH
) is the address of the mark 15 that is scanned and detected first, and the tip thereof is P of the copy 12a as in the previous embodiment.
(0,0). In this example, "trimming and shifting" is performed by combining the mark area trimming function disclosed in JP-A-62-159570 and the shift function according to the present invention.
“Masking and Shift”, “Cut out and Shift”,
"Inversion and shift" and "trimming, inversion and shift", etc. are also possible.

Furthermore, in these shift modes, mark 13
．． Copy the reference position P (XM, Ys) (starting end in the scanning direction) of 15 to the left 71 of 12a! ! (starting end) P
(0,0), and shift control is performed by making both coincide.This reference position is set, for example, to the center of the copy paper, and the main scanning data valid signal LG and sub-scanning data valid signal are set to correspond to this position. A similar shift operation can also be performed by controlling the FC, writing timing in the printer section 3, paper feeding timing, etc. Therefore, the positions of the marks 13, 15, the manner in which the marks are applied, the method of shift control, etc. can be selected in various ways depending on the intended design conditions.

Although the above embodiment exemplifies a copying machine as an image forming apparatus, the present invention is applicable to general image forming apparatuses such as facsimiles that take the control form shown in the block diagram shown in FIG. Needless to say.

As described above, according to the above-mentioned embodiment, (1) By simply marking a document and selecting a shift mode, it is possible to easily perform shift copying by starting from the marked position and shifting it to a desired position. (2) In combination with trimming and masking by specifying the area to be copied using marks, you can shift only the desired image. ■ Even when trimming a part of a large document to make a small copy, use the operation described in ■. By performing trim and shift copying, it is possible to easily obtain a copy of only a small necessary part with a simple operation. ■ Since there is no need to specify the coordinates of the image area of the original to be shifted, the operation is easy and the position can be adjusted easily. It also has high accuracy; ■ Since there is no need to read the image once, display the read image on the display, and process the image, the processing time is short, and there is no risk of increasing the size or cost of the device. ＼2 etc. There are various effects.

〔effect〕

As is clear from the above description, the present invention includes a control means for detecting marks made on a document and controlling the image position on the transfer image surface based on the detected position of the detected mark. According to this method, an image in an area set by a mark can be processed and shifted to a desired position on a transfer image surface in real time with N simple operations, and a duplicate image formed by shifting can be obtained.

[Brief explanation of the drawing]

All figures are for explaining the copying machine according to the embodiment.
FIG. 1 is a logical block diagram showing an example of a shift control circuit;
FIG. 2 is a block diagram showing the schematic configuration of the control system of the copying machine.
Fig. 3 is an explanatory diagram showing the relationship between originals and copies, Fig. 4 is an explanatory diagram of shifted copying, Fig. 5 is a timing chart showing the timing relationship in normal mode, and Fig. 6 is an explanatory diagram showing the timing relationship in shift mode. The timing chart shown in FIG. 7, 7ryJ is an explanatory diagram of a document related to another example of copying, and FIG. 8 is an explanatory diagram of the copying. 1......Scanner part, 2......
・Image processing section, 3...Printer section, 12
．． 14... Manuscript, 12a, 14a...
...Copy, ts, ts...Mark. Fig. 3 Fig. 4 Fig. 5 Fig. 6 & Moaning ----'Mouth' □□1J=-■f-]
−1st J =− ■f−

Claims (1)

[Claims] In an image processing apparatus that has a mark detection means for detecting marks placed on a document and performs image processing on an area set by the mark on the document, the detection position of the mark detected by the mark detection means An image processing apparatus comprising: a control means for controlling an image position on a transfer image surface based on the above.