JPH02217071A - Image processor - Google Patents

Abstract

PURPOSE:To surely obtain a required deformed image by providing a image processor with a 1st specifying means for specifying an area to be deformed, a 2nd specifying means for specifying a deformed shape as an area and a processing means for processing an image in accordance with the specification of the 1st and 2nd specifying means. CONSTITUTION:A digitizer 139 is allowed to fetch coordinate data on a board pointed out by a touch pen 138 to a microcomputer and the coordinate data are recognized as the positional information of an original or power information indicated on a position 141. When a zooming coordinate area 141 is specified by the touch pen 138 after depressing a zoom key 129, the power can be specified. When a position to be processed on the original is specified by the touch pen 138 after depressing an area specifying key 130, an optional area can be specified. Thus, an image can be deformed to a required shape and the deformed image can be outputted by specifying the deformed shape by the digitizer or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image processing device that reads an original image and outputs it as an image signal.

[Conventional technology]

2. Description of the Related Art Various processes for transforming a document image have been proposed in an image processing apparatus that photoelectrically reads a document, outputs it as an image signal, and electrically processes the document image.

[Problem to be solved by the invention] In the conventionally proposed transformation processing, the reproduction magnification, reproduction position, tilt amount, etc. for the original image were individually set, and the transformation processing for the image was executed based on the settings. .

Therefore, unless the -degree processing is performed, it is unclear what kind of deformation processing results can be obtained depending on the settings, and the operability is poor.

[Problems to be Solved by the Invention] According to the present invention, it is possible to easily set a deformed image, which was previously impossible, and to obtain a desired deformed image without fail.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 shows the appearance of a document reading device according to the present invention.

The document reading device includes an operation section 143, a document placing section and a document reading section (not shown), and a document table pressure plate 142.

This is explained below. The operation unit 143 also displays information about a printer unit that is connected to the document reading device and performs image formation based on image information.

A start key 101 instructs to start document reading.

The asterisk key 102 is used for setting the service mode and the like.

The recall key 103 is used to specify a recall mode that can recall the previous copy mode. A reset key 104 is used to return various settings to standard mode.

The clear stop key 106 is used to clear the number of copies specified with the numeric keypad and to stop the copying operation. Density keys 107 , 108 , and 109 specify manual density adjustment and automatic density adjustment (AE) for copying, and the instructions are displayed on indicator 110 .

The photo key 111 is designated when a user wants to make a copy of a photo original. The high contrast key 112 is specified when the user wants to make the contrast (black and white) of the image clear. A negative/positive inversion key 113 inverts the white level and black level of the image.

The number of sheets display section 114 displays the set number of sheets and the remaining number of sheets during the copying operation. An indicator 115 displays the orientation of the document based on the copy magnification and paper size. Indicator 116 displays the paper size. The cassette selection key 117 specifies the paper feed stage of the printer. Equal magnification key 118, standard magnification key 119, auto magnification key 12
1 indicates the magnification of the variable size copy, and indicator 12
2 displays the magnification during standard magnification.

The auto paper selection key 120 is used to automatically select a paper size based on the document size or the like. The liquid crystal display section 123 is composed of a 240 dot x 64 dot liquid crystal, and is displayed under the control of a microcomputer, which will be described later.

Note that the surface of the liquid crystal display section 123 is covered with a transparent touch panel. This touch panel has a built-in 4 x 10 matrix of transparent electrode switches, and is configured so that the coordinate values when specified with a finger or the like are taken into a microcomputer so that the specified position can be determined. Both sides/
The multiplex key 124 is used to specify duplex/multiplex operation of the printer. Sort/collate key 125 is used to specify the operation of a sorter connected to the printer. The center movement key 126 is used to move image information to the center of the paper. The document recognition key 127 is used to select whether or not to recognize the document size.

The memory key 128 memorizes various operation modes,
- This is a key that can be called all at once.

The document table pressure plate 142 presses the document on a document table (not shown) and has an operation section so that various settings can be made.

The digitizer 139 can import coordinate data on the board indicated by the touch pen 138 into the microcomputer. The coordinate data is recognized as position information on the document or magnification information shown at 141 in combination with the operation mode. In addition, since the magnification information is converted from coordinate values to magnification information by a microcomputer program, it is possible to display the necessary magnification range in bold (in this example), as shown in the figure. , 35%
100% is displayed in a large size).

The zoom key 129 is a key for specifying the magnification, and after pressing this key, the magnification is specified by specifying the zoom coordinate area 141 with the touch pen 138.

The area designation key 130 is a key for designating an area for image processing. After pressing this key, any area can be designated by using a touch pen to designate a position on the document to be processed.

The movement key 131 is a key for moving the image, and after pressing this key, the desired position to be moved is specified using the touch pen and touch panel.

The page continuous copying key 132 is used when it is desired to output a document in multiple sheets.

The enlarged continuous copying key 133 is used when it is desired to output an enlarged image of a document on multiple sheets of paper.

The arbitrary transformation key 134 is used when it is desired to arbitrarily transform the original image and output it by sequentially moving the original image in the main scanning direction line by line or every several lines and changing the magnification sequentially.

FIG. 2 shows a configuration diagram of the document reading device 1, which will be explained below.

The CPU 204 operates according to a control program written in the ROM 207, and the RAM 210. I10 port 21
4. Timer circuit 2011 serial circuit 213, key display drive circuit 202, liquid crystal drive circuit 205, input port 20
8. 211 is used to control the entire document reading device.

The key display drive circuit 202 is a circuit for scanning the key matrix of the scanning unit 143 and driving a display such as an LED.

The liquid crystal drive circuit 205 is a control circuit for displaying various information on the liquid crystal display section 123.

The RAM 210 stores data such as area data and magnification values specified by the digitizer.

The input port 208 is a port for inputting coordinate values on the touch panel 209.

The input port 211 is a port for inputting coordinate values on the digitizer 142.

The I10 port 214 is a port that controls each part (fluorescent lamp for document illumination, optical drive motor, etc.) of the image information output section 215 that reads the document image and outputs image information.

The encoder pulse counter 212 generates a HINT signal 216 when the value of the encoder pulse generated from the motor 409 reaches the value set by the CPU.
An interrupt is generated at 204.

FIG. 3 shows an embodiment of a document reading device, in which 401 is a document table, 402 is a document holder, 403 is a COD for image reading consisting of a plurality of light receiving elements arranged in a line, and 404 is an image reading device.
is a fluorescent lamp for document illumination, 405 to 407 are mirrors, 40
8 is an imaging lens, and 409 is a motor. motor 4
09, the document is sub-scanned in the X direction by moving the fluorescent lamp 404 and mirrors 405 to 407 (optical system),
The original images are sequentially focused on the CCD 403 . This results in
The original image is sequentially read and scanned line by line. 411 is a standard white plate for obtaining data for shading correction, a fluorescent lamp 404 illuminates this standard white plate 411, and a fluorescent lamp 404 and a mirror are placed at a position where the reflected light from the standard white plate 411 is guided to the CCD 403. The state where 405 to 407 are present is called the home position.

FIG. 4 schematically shows the image signal output section of the document reading device shown in FIG. 3, and will be described below.

The light reflected from the original 301 illuminated by the fluorescent lamp 404 is
A charge coupled device (CCD) 403 via a lens 408
is incident on the The original image incident on the CC, D 403 is decomposed into pixels and sent to a correction circuit 30 for shading correction, etc.
4 and is input to the variable magnification control 401.

The scaling control 401 performs scaling processing on the VDO signal and outputs it to the printer interface 403 . The printer interface 403 is used to issue control commands to the printer and conversely receive information from the printer. Note that the area signal generation unit 402 generates area signals for trimming, masking, and image movement of the original image,
Further, the timing generating section 404 outputs an operation timing signal to each section based on the signal from the reference oscillating section 405.

FIG. 5 is a block diagram showing an example of the internal configuration of a printer connected to the document reading device.

As shown in FIG. 5, a serial image signal from the document reading device is input to a serial circuit 501, and a CPU 500
Processed by

The CPU 500 operates according to a control program stored in the ROM 503, and includes a RAM 504, a timer circuit 502,
The I10 port 505 is used to control the entire paper deck and duplex unit.

The input interface 507 performs input processing of sensor signals such as paper detection in the printer. A drive circuit 508 is a circuit for driving a motor, high voltage transformer, etc. (not shown). A display circuit 506 is used to display printer status such as no printing paper or occurrence of paper jam.

The VDO signal (image signal) sent from the reader is input to the laser driver 509, and the semiconductor laser 510
It is converted into laser light based on the VDO signal. The laser beam is focused by a collimator lens 511 and scanned by a polygon mirror 512 in a direction substantially parallel to the rotation axis of a photosensitive drum 514, which is rotated by a predetermined amount. The scanned laser beam undergoes light intensity correction by an fθ lens 513, and is irradiated onto a photosensitive drum 514 to form a latent image based on a VDO signal.

Image formation in printers uses a so-called electrostatic recording method, in which the required portions of the charge applied to the photosensitive drum 514 are removed using laser light, and then developed using a developer to print on printing paper. This is done by transferring and fixing. Since the electrostatic recording method is a well-known technique, detailed explanation will be omitted.

Now, the laser beam scanned by the polygon mirror 512 is incident on the optical fiber 515 before being irradiated onto the photosensitive drum 514, and when the photodetector 516 detects the incident, it outputs an electric signal (a BD multiplied signal).

League is H3Y, which is a reference signal for the time from when the BD double signal is generated until the laser beam reaches the photosensitive drum 514.
The timing generator 404 generates the NC 515 in synchronization with VCLK so that the VDO signal forms a latent image at an appropriate position on the photosensitive drum 514.

Next, magnification control and movement in the main scanning direction will be explained.

FIG. 6(a) is a diagram showing the configuration of the variable magnification control section 401.

In FIG. 6(a), line buffers 601 and 602
are respectively in the main scanning direction, for example, 16pe for ■ lines.
t/mm, 297 mm in A4 longitudinal direction, 16X29
It is a line buffer memory that has a capacity of 74,752 pixels, has separate data input/output ports and read/write address ports, and can be read and written asynchronously.

In the line buffers 601 and 602, AW
E・BWE-Memory write operation during “L o”, A
A read operation is performed while RE-BRE-“Lo”, and when 4 = “H1I+”, the output of line buffer A, BRE “
Since the output of B is in a high impedance state when it is "Hi", a wired OR is taken for each output, and VD
O signal is output.

Then, when the WCLK610 is given a clock obtained by thinning out the video data transfer lock VCLK in the system by the W frequency divider 603, and the RCLK611 is given a clock without VCLK being thinned out, the VDO signal is reduced at the time of output, and the reverse is given. It is expanded.

In addition, the write address counter 605 and read address counter 60 of the line buffers A601 and B2O2
6 is an enable signal (W
E602. RE621) is enabled “L”.

The count advances by the interval . Note that the write address counter is initialized by H3YNC515, and the read address counter 606 is set when the read start address value 607 set by the CPU 204 is H8YN.
It is set in the counter at the rising edge of C515. 6th
AWE for m1 pixels from the n1th pixel as shown in figure (b)
= “Lo” (same for BWE), write pixel data, and write ARE = “Lo” for m2 pixels from the n2th pixel.
(Similarly for BRE) to read out pixel data and WC
By setting LK:RCLK=VCLK:604, it is possible to obtain an enlarged image in which the writing start position is shifted to the left as shown in FIG. 6(C). That is, like this W
E620. By making the RE621 generation interval variable, the image can be moved arbitrarily in the main scanning direction, and the RCLK6
11. In combination with WCLK610 thinning, variable magnification control can be easily performed.

Next, magnification control related to sub-scanning will be explained.

The magnification in the sub-scanning direction is determined by the reading speed of the optical system, that is, the rotation speed of the motor 409. The rotation speed of the motor 409 is set by the CPU 204 through the I10 port 214, and the speed of the motor 409 can be set at any time by the CPU 204 even while the optical system is scanning.

FIG. 7 is a diagram for explaining region signal generation.

The area refers to, for example, the shaded area in FIG. 7(e), and this refers to the area in the sub-scanning direction A-B, as shown in the timing chart AREA in FIG. 7(e), for each line. This area is distinguished from other areas by a unique signal. Each area is designated by digitizer 142 in FIG. FIGS. 7(a) to 7(d) show a configuration in which the CPU 204 can programmably obtain a large number of 2-section length, 9-section generation positions of this area signal. In this configuration, one region signal is generated by one bit of the CPU-accessible RAM, and for example, n
In order to obtain the book area signals AREAO to AREAn, two RAMs each having an n-bit configuration are provided (Fig. 7(d)).
01.702).

Now, the area signals AREAO1 and A as shown in FIG. 7(b) are
If we get REAn, the RAM address Xl +X
Set "1" to bit 0 of 3, and set all bits 0 of the remaining addresses to '0'.Meanwhile, RAM address L
Set "1" in XI+X2+X4, and set all bits n of other addresses to "0". Data in the RAM is sequentially read out in synchronization with a constant clock using H8YNC as a reference (for example, as shown in Figure 7 (C
), data "l" is read out at addresses Xl and X3. This read data is shown in FIG. 7(d).
Since the J- of 748-0 to 748-n is connected to both the J and K terminals of the flip-flop, the output is a toggle operation.
That is, when "l" is read from the RAM and CLK is input, the output changes from "0" to "l" to "0", and the AR
An EAO-like interval signal and thus a region signal is generated.

Furthermore, if data is set to "0'" over all addresses, no area section is generated and no area is set. FIG. 7(d) shows this circuit configuration, and 701 and 702 are the aforementioned RAMs. In order to switch the area section at high speed, for example, while data is being read from RAM 701 line by line, C
The PU204 (Figure 2) performs memory write operations for different area settings, and alternately generates sections and
Switch memory writing from CPU. Therefore, if you specify the shaded area in Figure 7(f), A+B +A+
RAMA (!:RAMB) is switched like B+A, which means (C3, C4, C5) in Figure 7(d).
-(0,1,O), the counter output of the address counter 741 counted by VCLK is given as an address to the RAMA 701 through the selector 739 (Aa), the gate 742 is opened, the gate 744 is closed, and the address is output from the RAM 702. The full bit width, n bits, are read out and input into J- flip-flops 748-0 to 748-n, and ARE A O= according to the set value.
A RE A n interval signals are generated.

During this time, writing from the CPU to B is via address bus A-
Bus591. This is performed using the data bus D-Bus 692 and the access signal R/W. Conversely, when generating a section signal based on data set in RAMB 702 (C
3, C4, C3) = (1, 0, 1), it can be done in the same way, and data can be written from the CPU to the RAM 701 (C3, C4 + c5 are output from the I10 port of the CPU).

The arbitrary transformation operation method will be explained.

FIG. 8 shows how to specify an arbitrary deformation mode using the liquid crystal display section 123 of the operation section 143, using an example of obtaining a deformed image as shown in FIG. 10(d) from the original shown in FIG. 10(a). show. Note that FIGS. 10(b) and 10(c) are diagrams showing examples of image modification.

When the arbitrary transformation key 134 on the digitizer 139 is pressed, the display on the liquid crystal display section 143 becomes as shown in FIG. 8(a) if there is no arbitrary transformation setting. Here, P ilI P +2 + in FIG. 10(a), which is the left half of the original image.
When P+s+P+4 is input from the digitizer 139, the liquid crystal display section 123 becomes as shown in FIG. 8(b) and displays the input position. After confirming that the original area is correct, press the Q ball key 801 in FIG. 8(b), and the screen will appear as shown in FIG. 8(C).

In Fig. 8 (C), the area after deformation is shown in Fig. 10 (d
) of P ol + P o2 + P o3 + P
04 is inputted using the digitizer 139, the screen becomes as shown in FIG. 8(d) and displays the input position.

After confirming that the deformation area is correct, press the ΦX) key 802 in FIG. 8(d), and the screen changes to FIG. 8(e).

In FIG. 8(e), the original area can be confirmed by the solid line, and the deformed area can be confirmed by the dotted line. On this screen, the magnification in the sub-scanning direction can be specified for each area. However, in this example, since the document area and the deformation area are specified using a digitizer, automatic magnification is usually sufficient for the magnification in the sub-scanning direction.

Note that this is an effective function when you want to accurately set the magnification of a deformed image.

In Fig. 8(e), when you have confirmed the first arbitrary transformation mode, press the (U) key 803, and the screen will return to the eighth mode.
The document area becomes as shown in Figure 10(a), which is the second arbitrary deformation mode, P14°Pi3 in Figure 10(a). P+5
．． Pi6 and the area after deformation P o in Figure 1O (d)
4, P o3 , P o5 + P o6 are set on the liquid crystal screen in the same manner as described above.

The main keys 04 to 807 at the top of the screen in FIGS. 8(a) and 8(e) are arbitrary transformation mode numbers, such as Na
Count up and count down what is displayed as 1. When the arbitrary transformation mode corresponding to that number is set, the screen changes to Fig. 8 (e) and you can confirm the arbitrary transformation mode corresponding to that number, and when the arbitrary transformation mode is not set. As mentioned above, Figure 8 (
The screen changes to a), allowing you to set a new arbitrary transformation mode. Also, (d 80 in Fig. 8(a)
8 keys can clear all functions in arbitrary transformation mode.

Figure 8(b).

◎ key 809 in FIG. 8(d). 810 can clear the point whose coordinates have been input. The ■ key 811 in FIG. 8(C) can return the screen to FIG. 8(b).

FIG. 11(a) shows a flowchart of the operation of the CPU 204 when outputting an image in the arbitrary deformation mode, which will be described below.

By pressing the copy key (STPIIOI), turn on the fluorescent light and perform shading processing (STPI 102)
.

A schedule table is created from the values specified by the keys on the digitizer 139 and the keys on the operation unit 143 (STP1103).

The schedule table sorts the coordinate information of the document area and deformation area set in the RAM as shown in FIG. 9(a) when the operation shown in FIG. Figure 9(b)
Create.

The main scanning magnification and sub-scanning magnification in FIG. 9(b) are between processing 0 and 1, and the movement amount of the main scanning writing start position to change the magnification by 1% is d2, writing 2-Xl (processing (For example, in the case of 0) is calculated, and the main scanning magnification and sub-scanning magnification of the magnification control are set.

Here, when moving from process 0 to process 1 in FIG. 9(b), the magnification in the main scanning direction is switched from 100% to 150%, so the arbitrary deformation schedule table can be created by switching stepwise during this time. The method to create it is shown below.

That is, the schedule table shown in FIG. 9(C) is completed by setting the sub-scanning amount for changing the magnification by 1% to the value d.

Next, the 5TP1104 determines whether or not a movement mode is set, and if it is set, moves the optical system toward the original by the amount of movement (STPL
104).

Then, 5TP1105 sets the necessary values in each register, outputs a copy start instruction to the printer (5TP1106), and turns on the optical system drive motor (ST
P1107). Thereafter, a check is made for the completion of the copying operation according to the schedule table, and when the copying operation is completed, the optical system is returned to the home position (STP1109) and the motor is stopped (STPIIIO).

Then, instruct the printer to stop copying (STP
III).

FIG. 11(b) is a flowchart of interrupt processing for the signal HINT2 output from the encoder pulse counter, which will be explained below.

The interrupt causes the schedule table in Figure 9 (c
) is set in the RAM 701 or 702 (STPI 120). The value of the original area becomes the write area signal WE to the line buffer for scaling control, which corresponds to BITO of RAM701 or 702, and the value of the transformation area becomes the read area signal ■ to the line buffer for scaling control, and corresponds to BITO of RAM701 or 702. or 702
This corresponds to BIT 1 of

Next, write and read frequency division values for magnification control corresponding to the main scanning magnification are set (STP1121).

The read start address 607 is used when the write start position in the main scanning direction becomes negative, and its negative absolute value is set.

Then, the motor speed corresponding to the sub-scanning magnification is set (STP1123).

When all the data have been set, the encoder pulse value corresponding to H3YNCI times earlier than the sub-scanning address at which the above process operates is set in the encoder pulse counter 212 (STP1124).

5TP1125, RAM701. Outputs the switching signals C3595, C4596, and C5593 of the RAM 702 to the I10 port, increases the processing pointer by 1, and ends the data set of the schedule table (STP1126)
.

[Other Examples]

Another embodiment of the present invention is shown in FIG. 12 and will be described below.

FIG. 12(a) shows a document image and a modified image input using input means such as a digitizer or mouse that can be input continuously, and FIG. 12(b) shows information obtained by sorting these input data in the sub-scanning direction. Shown below.

Here, the size X of the document area in the sub-scanning direction.

X, and the size of the deformation area in the sub-scanning direction XmX1X m
Deriving the sub-scanning direction magnification RX-X100% from X l
When the sub-scanning magnification is enlarged, the document area information is interpolated, and when the sub-scanning magnification is reduced, the amount of change d1' in the sub-scanning direction is determined when the document area information is thinned out.

Xm It is also possible to transform an irregularly shaped image into an irregularly shaped image according to the flowchart shown in FIG.

〔effect〕

As described above, it has become possible to transform and output an image into a desired shape by specifying the shape after transformation using a digitizer or the like without measuring the angle or length of the image to be transformed.

[Brief explanation of the drawing]

FIG. 1 is an external view of the document reading device, FIG. 2 is an internal circuit block diagram of the document reading device, FIG. 3 is a configuration diagram of the document reading device, FIG. 4 is a block diagram of the image processing section of the document reading device, Fifth
The figure shows the internal configuration of the printer, Figure 6 is a detailed explanatory diagram of the variable magnification control section, Figure 7 is a detailed explanatory diagram of the area signal generator, Figure 8 is a flowchart of arbitrary transformation operation, and Figure 9 is an area RAM map. 204 is a CPU, 409 is a schedule table diagram, FIG. 10 is a diagram showing an example of image modification, FIG. 11 is a flowchart diagram of an arbitrary transformation operation, and FIG.
is the motor, 212 is the encoder pulse count, 4ol
is a magnification control section. Xo To \To l-\

Claims (3)

[Claims] (1) In an image processing device capable of arbitrary transformation by sequentially changing the output position and magnification of an image for each line or multiple lines in the main scanning and sub-scanning directions, a first specifying means for specifying a region to be transformed; An image processing apparatus comprising: second specifying means for specifying a shape after deformation as a region; and processing means for performing image processing according to the specifications of the first and second specifying means. (2) The image processing apparatus according to claim 1, wherein the deformed region is divided into a plurality of regions for each region to be subjected to the same deformed image processing, and a deformed region corresponding to each divided region is specified. (3) The image processing apparatus according to claim 1, wherein the deformed region is set by dividing into a plurality of regions at the same magnification in the sub-scanning direction.