JPH0435155A - Picture processor - Google Patents

Abstract

PURPOSE:To reproduce a picture of an original accurately by using an image pickup device to pre-scan an original in advance, outputting the pickup signal to a picture position correction means and correcting and controlling a read start position in the case of main scanning. CONSTITUTION:When a start switch 25 is depressed while an original is set on a placing part, a motor 22 is driven toward the read start position and pre-scanning by a CCD sensor 6 is implemented and the position of the original is stored in advance in a RAM 15 via a picture data input circuit 7, a binarizing processing circuit 12, a DP-RAM 13 and a CPU 14. A TOP signal and an END signal of the original are fed to the input section 16 and a sensor 6 is stopped at a read start position. When the switch 25 is depressed, the start state is reached. Then the motor 22 is driven by the control of the CPU 17 and the sensor 6 is moved to the read start position of the original. The sensor 6 is moved synchronously with the motor 22 and the picture on the original X on the placing part is inputted.

Description

Detailed Description of the Invention (Industrial Field of Application) This invention fixes an original on a document resting section made of a stage glass or the like, and performs CC control on the image of the fixed original.
It relates to image processing devices used in copying devices and plate-making devices that capture and reproduce images of documents while moving an imaging object such as a D-sensor, and is particularly applicable to image processing devices that capture and reproduce images of documents while moving an imaging object such as a D-sensor. The present invention relates to an image processing device that corrects positional deviation.

(Prior Art) Conventionally, as shown in FIG. 7, image processing apparatuses used in copying machines, plate-making machines, etc., which have fixed originals, place originals The document X is placed on the document tray 30 and fixed by a suppression plate 31, and a CCD sensor 6 disposed below the document placement section 30 is actuated by a drive motor in response to an image of the fixed document X. 2
2 to capture an image of the document X, and reproduce the captured image.

(Problem to be Solved by the Invention) However, in the conventional image processing apparatus, as shown in FIGS. 7 and 8, even if the width of the document What is the reading range of 6? It becomes 2.

That is, as shown in FIG. 8, for e,1 necessary for reading document X! 2-△! Since an extra minute of reading is required, an image processing apparatus having a correspondingly large memory capacity of the storage means is required, resulting in an increase in cost.

Furthermore, as shown in FIG. 9(a), for example, printing paper P
If a reproduced image with letters ABCD printed in the center is required, and the original X is set shifted to the left on the original placing unit 301-, as shown in FIG. 9(b), If the reproduced image is reproduced on the printing paper P and the reproduction operation is required again, and if the original X is set shifted to the right on the original placing section 30H, the printing will be delayed as shown in FIG. 9(C). The reproduced image is reproduced on the paper P, and the reproduction operation is required again, which is time-consuming and wastes the printing paper P, leading to an increase in costs.

The image processing apparatus according to the present invention has been made to solve the problem described in -1-, and its purpose is to confirm the setting position of the original at the time of pre-scanning, and to check the position of the original at the time of main scanning. If the positional deviation is within a predetermined area, move the imaged object according to the set state of the original, and correct/correct the reading start position of the imaged object using the image position control means.
By carrying out the control, it is possible to automatically eliminate errors in reproducing image blocks onto printing paper due to misalignment of originals, thereby providing an image processing apparatus that can also reduce costs.

(Means for Solving the Problems) In order to achieve the above object, an image processing apparatus according to the present invention fixes a document on a document placement section made of a stage glass or the like, and uses a CCD or the like to scan an image of the document. In a fixed-original type image processing device that captures and reproduces an image of a document while moving an object to be imaged, a pre-scan is performed to confirm the position of the document in advance using the object to be imaged. a detection means for detecting the set position of the original; an output means for outputting the leading edge line of the original detected by the detection means as a top signal and the end line as an end signal; and output from the output means. image position correction means that recognizes the reading range of the original from the above-mentioned signals and corrects and controls the reading start position of the imaged object during main scanning if the deviation of the set position of the original is within a predetermined range; It is characterized by having the following.

(Function) According to the device of the present invention having the above-mentioned configuration, a pre-scan is performed using the imaged object to confirm the set position of the original in advance, and the set position of the original on the placement section is detected by the detection means. , the leading edge line of the document output from the detection means is taken as the top line, and the end signal of the end line is outputted from the output means to the image position correction means, and during the main scan, the image position correction means adjusts the position of the imaged object. The scanning start position is corrected and controlled, and the misalignment of the document placement position is automatically corrected at all times, so even if the document placement position is misaligned, an accurate image of the original can be obtained. It can play songs that can reduce costs, and it can play back images of originals depending on the size of the original.
This makes it possible to save memory capacity and speed up image processing.

(Embodiment) Hereinafter, an embodiment of the image processing apparatus according to the present invention will be described based on the drawings, and the same members as described in the conventional example are denoted by the same reference numerals, and the explanation thereof will be omitted.

FIG. 1 is an explanatory diagram showing the operation state of the CCD sensor used in this invention device, FIG. 2 is a time chart for explaining the image data capture state of this invention device, and FIG.
The figure is a circuit block diagram showing the basic circuit configuration of this invention device, and FIG. 4 is a flowchart 1 showing the flow of this invention device.
・In Figure 5, the position of the image on the document is 3 m from the reading start position.
FIGS. 6(a) and 6(b) are explanatory diagrams showing the state in which image data of a document is output using the apparatus of the present invention.

As shown in FIG. 1, the image processing device processes image data manually inputted from an image input unit 1 having an imaged object such as a CCD sensor and a drive motor for moving the CCD sensor, and the image input unit 1. The image processing unit 2 detects the set position of the original A during pre-scanning, detects and outputs the top signal of the leading edge line of the original A and the end signal of the trailing edge line of the original A during main scanning, and detects the set position of the original A during pre-scanning. a trimming processing unit 3 that trims the floating portion caused by the lifted crease portion; and an image position correction unit 4 that is connected to the trimming processing unit 3 and controls the position of the image input unit 1 to the starting position of the document during main scanning.
The image position correction means 4 generally comprises an image output section 5 which outputs image data when the input image whose position has been corrected is input.

As shown in the figure, the CCD sensor 6 (contact type image sensor) of the image input section 1 is connected to the image data input circuit 7 of the image processing section 2. Photo processing circuit 8. Data switching circuit 9. The thermal head 1 of the image output section 5 is connected via the mask processing circuit 10.
Connected to 1.

A binarization processing circuit 12 is connected to the output side of the image data input circuit 7 in parallel with the photo processing circuit 8, and the photo processing circuit 8 converts gradation patterns from human image data to the binarization processing circuit 12. 12 is configured to manually input binary data to the data switching circuit 9.

The binarization processing circuit 12 includes a DP of the trimming processing section 3.
- It is connected to the RAM (dual port memory) 13 so as to manually input binary data, and its DPφRAM 1B is connected to the CP
It is connected to the RAM 15 via U14, and
It is connected to the input section 16 of the image position correction means 4.

This image position correction means 4 is formed on a system processing section 4a, and this system processing section 4a receives the TOP signal of the leading edge line of the document When the input section 16 to which the END signal of the trailing edge line is input via the DP-RAM 13 under the control of the CPU 14 and the document X are within 3 mm from the end 30a (reading start position) of the placement section 30, , a CPU 17 that performs position correction control, and a program R in which control of the CPU 17 is programmed.
It consists of an OM 18 and a control signal output section 19 that starts a counter 20 and a motor control section 21 in response to a TOP signal and an END signal input manually to the input section 16.

Note that the counter 20 receives the TOP output from the output section 19.
The CCD sensor 6 is turned on in synchronization with the signal, and the image of the document It is configured to drive a drive motor 22 that conveys the 6.

Furthermore, the document X is 3 m from the end 30a of the placement section
If the distance is more than m, the CPU 17 does not perform position correction control, and the CPU 17 controls the CPU 17 so that the output section 19 outputs an ON signal to the CCD sensor 6 and the motor control section 21 in synchronization with the counter 20. It is configured to be controlled.

In the figure, an image clock 17 in the image processing section 2 is provided to output a synchronization signal when outputting image data, and a CCD sensor 6 of the image processing section 1 and a thermal head 11 of the image output section 5 are provided. .1-Connected to the counter 18 of the rimming processing section 3.

In addition, the start switch 25 is turned on during the main scan.
The N signal is sent to the CPU 14 and the input section 16 of the system processing section 4a.
It is configured to output to the CPU 17 via.

The photo processing circuit 8 is configured to, when image data is manually inputted from the image data input circuit 7, replace the image data with gradation data and output it to the data switching circuit 9.

When image data is input from the image data input circuit 7, the binarization processing circuit 12 converts the image into white and black.
It is configured to convert the data into values and output the resulting binary data to the data switching circuit 9 and the DP-RAM 13.

-]- When a forced photo data command signal is output from the DP-RAM 13, which normally outputs binary data to the mask processing circuit 10, the data switching circuit 9 converts the data into binary data and outputs it from the photo processing circuit 8. The mask processing circuit 10 is configured to output the gradation data to the mask processing circuit 10.

-1- The mask processing circuit 10 is composed of an AND circuit, and normally outputs binary data, but the DP-RA
When a command signal for forced white data is output from M1B, a signal is inserted to change the floating black binary data part of the document to white, and the image data with the binary data and white data folded in is sent to the thermal head 11. It is configured to be manually operated.

Next, the operation of the apparatus of the present invention having the configuration described above will be explained based on the flowchart of FIG.

First, when the document X is placed on the tray 30 and the start switch 25 is pressed, the motor 22 is moved from the right end side to the left end reading start position 30a as shown by the arrow in FIG. 1 under the control of the CPU 14. The CCD sensor 6 integrated with the motor 22 performs pre-scanning, and the position of the original document X is determined by the image data input circuits 7 and 2.
Value processing circuit 12. The TOP signal and the END signal of the document X are stored in the RAM 15 via the CPU 14 and the manual section 16 of the system processing section 4a.The CCD sensor 6 stops at the reading start position.

Then, when the start switch 25 is pressed, the start state is entered.

Then, in step 100, the CPU 17 determines whether the margin at the leading edge of the document X is within 3 mm.
If 17 is determined to be YES, the process moves to step 101, where the motor 22 is driven under the control of the CPU 17, and the CCD sensor 6 is moved by the motor 22 toward the reading start position 30a of the document X.

In the next step 102, the counter 20 counts the line clocks for the Z pulses up to the leading edge margin of the document , the counting is repeated, and when the CPU 17 determines that the counting of the counter 20 has been completed, that is, YES, the process moves to step 10B.

If it is determined in step 101 that the margin at the leading edge of the document Simultaneous control is performed, and the CCD sensor 6 enters the ON state when the TOP signal is manually input from the human power section 16.

In the next step 103, the TOP signal of the document X is output to one output section under the control of the CPU 17, and the counter 20
The motor 22 is turned on under the control of the motor control section 21 and the CCD sensor 6 is turned on at the same time, and the process moves to step 105.

In step 105, the CCD sensor 6 moves in synchronization with the motor 22 and inputs the image of the document X on the placement section 30, and when this is completed, the process ends.

As is clear from the above configuration, according to the inventive device of this embodiment, the set position of the original is confirmed in advance during pre-scanning, and during main scanning, if the positional deviation of the original X is within 3 mm, the CCD sensor 6 is moved according to the set state of the original, and the reading start position 30a of the CCD sensor 6 is corrected and controlled using the image position control means 4. Since reproduction errors can be automatically eliminated, efficiency of copying work and cost reduction can be achieved.

Furthermore, depending on the set state of the document X, it is only necessary to read image data of only the necessary reading area into the RAM of the CPU 17, so that the memory capacity of the CPU 17 can be saved and image processing can be speeded up accordingly.

Furthermore, if the original X is 3 mm or more from the reading start position 31a.
- If you want to intentionally separate the document X and copy it in a shifted state, you can copy the document X in the same manner as in the conventional method.

As is clear from the configuration described above, according to the apparatus of the present invention, a pre-scan is performed using the imaged object to confirm the setting position of the original in advance, and the detection means detects the setting position of the original.
Detecting the set position of the second document, using the leading edge line of the document outputted from the detection means as a signal, and outputting the signal of the trailing edge line from the output means to the image position correction means. The correction means corrects and controls the reading start position of the imaged object, and the misalignment of the document setting position is automatically corrected at all times, so even if the document setting signal is misaligned, In addition to being able to accurately reproduce the image of the original even if the original image is reproduced accurately, it is possible to reduce the cost. This has the effect of speeding up the process.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram showing the operating state of the CCD sensor used in this inventive device, and Fig. 2 is an explanatory diagram showing the operating state of the CCD sensor used in this inventive device. 3 is a circuit block diagram showing the basic circuit configuration of this invention device, FIG. 4 is a flowchart 1 showing the flow of this invention device, and FIG.
Time chart for explaining the capture of image data when there is a deviation of m or more 1-1 FIGS. 6(a) and 6(b) are explanatory diagrams showing the state in which image data of a document is captured and reproduced by the device of the present invention. , FIG. 7 is a schematic explanatory diagram showing the operating state of the image processing device in the conventional example, FIG. 8 is a time chart when capturing image data in the conventional example, and FIG.
Figures (a) and (b) are explanatory diagrams showing a state in which image data of a document is captured and reproduced by a conventional device. X...Original 1...Image input section 4...Image position correction means 6...CCD sensor (detection means) 14...CPU 30...Original placement section

Claims (1)

[Claims] 1. A fixed original type in which an original is fixed on an original placing unit made of a stage glass or the like, and an image of the original is captured and reproduced while moving an imaging object such as a CCD with respect to the image of the original. In the image processing apparatus, a detection means detects the set position of the original on the recording section by performing pre-scanning to confirm the set position of the original on the above-mentioned image pickup section in advance, and An output means that outputs the leading edge line of the original as a top signal and the end line as an end signal, and the reading range of the original is recognized from the above-mentioned signals outputted from this output means, and the misalignment of the set position of the original is detected. An image processing device comprising: an image position correction unit that corrects and controls a reading start position of the imaged object during main scanning if it is within a predetermined area.