JPH04150668A - Picture editing method - Google Patents

Abstract

PURPOSE:To preclude the partial omission of a picture even after an oblique process by processing with an arithmetic to the center point of a standard picture or a point corresponding to this so as to overlap the center point of the picture to be executed with the oblique process or the point corresponding to this. CONSTITUTION:Picture data from an external input device 201 or a scanner part 100 are worked by image processors 130 and 131 and reproduced in a printer 204. Here, when the instruction of the oblique process is applied from an operation part 107, by standard picture data and oblique information, a system controller 132 executes an arithmetic process of load data outputted at every 1 line at real time and shift data unchanging at the picture editing so as to overlapping the center point of the standard picture or the point corresponding to this with the center point of the picture obtained by the oblique process or the point corresponding to this in the image processors 130 and 131, and obtains an oblique picture. Thus, the picture without the omission can be obtained even after the oblique process.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image editing method for, for example, a digital copying machine, in which an image is obtained by processing image data from an external input device or a scanner using an image processor. The present invention relates to an image editing method for obtaining an italic image by performing italic processing on a standard image.

[Conventional technology]

Conventionally, image data read by a scanner is input to an image processor, and when performing italic processing, italics are simply processed based only on the oblique angle information without taking into account the positional relationship with respect to the input standard document (image data). It was being processed.

This example is shown in Figure 6, and the standard manuscript (
The image when applying positive angle italic processing to a) is (b)
), and when the standard image (a) was subjected to negative angle italic processing, the image was as shown in (C).

In addition, in the scanner for exposure image modification disclosed in Japanese Patent Application Laid-open No. 58-191564, in a scanner that temporarily writes image information obtained through reading scanning into a memory, the timing at which image information starts to be written for each scanning line to the memory is changed. A technique has been proposed in which at least one of the values is arbitrarily changed for each scanning line.

[Problems to be Solved by the Invention] However, in the above-mentioned italic processing method, since the italic processing was performed without taking the positional relationship with respect to the input standard document, the obtained italic image is as shown in Fig. 6 (b). ), (C)
As shown in FIG. 2, there is a problem in that a part of the italic image may be missing and a desired italic image may not be obtained.

Furthermore, it is difficult for the operator to recognize the position of the output image after italicizing the standard manuscript, and this poses a problem, especially when changing magnification such as reducing or enlarging, resulting in confusing operations and reducing office efficiency. there were.

Furthermore, the image deformation method proposed in Japanese Patent Application Laid-Open No. 58-191564 obtains an arbitrarily deformed image of a document, and does not sufficiently solve the above-mentioned problems. In particular, it is not possible to compare the image obtained by italicization during magnification with the original.

The present invention has been made in view of the above, and even after performing italic processing, it eliminates partial omission of the image and makes the positional relationship with the standard image almost the same, thereby increasing the efficiency of the italic copying work. The purpose is to improve.

[Means to solve the problem]

The present invention has been made in view of the above, and provides an image editing method for processing standard image data transmitted from an external input device or a scanner using an image processor to obtain an italic image. The italicized information input to the system controller causes the system controller to instruct the image processor to:
Load data that is output line by line in real time so that the center point or similar point of the standard image overlaps the center point or similar point of the image obtained by italic processing, and when editing the image. provides an image editing method for obtaining an italic image by performing arithmetic processing on shift data that does not change.

Also, the standard image data and the italic information input from the operation panel to the system controller are different from the standard image.
When italicized information is received from the system controller, in which the main scanning writing position shifts toward the rear end of the main scanning as sub-scanning progresses, the sub-scanning leading edge after italic processing is fixed to the leading edge of the standard image. The present invention provides an image editing method in which load data and shift data are calculated and output to an image processor to obtain an italic image.

Furthermore, when the image data and the italic information input from the operation panel to the system controller are in the case of an italic processing in which the writing position of the main scan shifts toward the leading edge of the main scan as the sub-scan progresses compared to the standard image, The present invention provides an image editing method for obtaining an italic image by calculating load data and shift data such that the sub-scan trailing edge after italic processing is fixed with respect to the trailing edge of the standard image, and outputting the data to an image processor.

[For production]

The image editing method according to the present invention is based on basic image information represented by the length in the main scanning direction and the length in the sub-scanning direction input from a scanner etc., data on the magnification change rate from the operation panel, and data on the oblique processing angle. A system controller performs arithmetic operations on the load data and shift data, an image processor performs italic processing, and the image is output by, for example, a digital copying machine.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to the accompanying drawings.

FIGS. 1(a) and 1(b) show the configuration of a digital copying machine using the image editing method of the present invention. FIG. It corresponds to the top part. Further, FIG. 1(b) is a sectional view showing a schematic configuration of a digital copying machine.

In FIGS. 1(a) and 1(b), a scanner section 100 for inputting an image is connected to an operation section 107 for inputting a copy mode.
, a platen cover 105 that holds down the original, an editor 106 located above the platen cover 105, an image leading edge sensor 104, an external input terminal 108, and an image reading section.

The document reading section reads the carriage 7 101, a fluorescent lamp 102 for illuminating the document, and the reflected light from the document.
It is composed of a photoelectric conversion device (C'CD) 103 that converts the amount of electric charge.

In addition, the main body of the copying machine includes each element 109 to 13 of the copying process.
It consists of 2.

That is, a paper feed cassette 10 that stores transfer paper of a predetermined size.
9.110, and a paper feed roller 111 that feeds the transfer paper sheet by sheet toward the transfer unit from the paper feed cassette 109.110.
．． 112, a registration roller 117 that conveys the transfer paper fed by the paper feed rollers 111 and 112 to the transfer section at a predetermined timing, a polygon mirror 116 that deflects the laser beam, and light from the polygon mirror 116. a lens 115 that collects light and performs fθ correction;
a mirror 114 that deflects the light that has passed through the photoreceptor drum 119 to the photoreceptor drum 119; a charger 126 that uniformly charges the surface of the photoreceptor drum 119;
a developing device 113 for developing with toner an electrostatic latent image formed by vaginal exposure after exposing the surface of the photosensitive drum 119 charged by 6, and the resist roller 11;
A transfer belt 120 that grips the transfer paper conveyed by the transfer belt 7 and conveys it in a predetermined direction, a transfer belt charger 121 that charges the surface of the transfer belt 120 to attract the transfer paper to the transfer belt 120, and a photoreceptor. A transfer charger 118 that transfers the developed image formed on the surface of the drum 119 onto a transfer paper adsorbed on a transfer belt 120, a belt separation charger 124 that separates the transfer paper adsorbed on the transfer belt 12o, and a transfer paper. A belt static elimination charger 123 that neutralizes the surface of the transfer belt 120 after separation, a fixing unit 127.12B (127 is a pressure roller, 128 is a fixing roller) that fixes the image on the transfer paper after the transfer process, and a It is comprised of a paper discharge tray 129 from which transfer paper is discharged, and a cleaning unit 125 which cleans the surface of the photoreceptor drum 119 after the transfer process.

Further, 130.131 indicates an image processor,
132 indicates a system controller.

In the above configuration, the operation thereof will be described. Image data read by the scanner unit 100 is sent to image processors 130 and 131 that perform image processing and image editing, and a system controller 132.

A fluorescent lamp 102 for illuminating the original and a photoelectric conversion device (COD) 103 that reads reflected light from the original and converts it into a charge amount.
is constructed integrally with the carriage 101, and moves in the sub-scanning direction indicated by the arrow in FIG. 1(b) to two-dimensionally read the original image. At this time, the image leading edge sensor 104 detects that the carriage 101 has reached the leading edge of the image area.

An editor 106 set on a platen cover 105 that holds the original is used to input editing contents such as area designation, and other editing contents and copy processing conditions are set by an operation unit 107. External input terminal 108 is a terminal for inputting image data from the outside.

The system controller 132 performs image processing and creates image editing data according to the editing contents input from the operation unit 107, and sends the data to the image processors 130 and 131. These data are captured and held by latch signals sent from system controller 132 to image processors 130 and 131.

The image data obtained by the scanner unit 100 is processed by image processors 130 and 131 according to image editing data and sent to the printer. A laser driver (not shown) is controlled according to the processed image data transmitted from the image processors 130 and 131, and its laser light is controlled.

The direction of the laser beam is changed by a polygon mirror 116 and a mirror 114, and the photosensitive drum 119 is irradiated through a lens 115 that focuses the laser beam and performs fθ correction. On the other hand, since the surface of the photoreceptor drum 119 has been uniformly charged by the charger 126 prior to this,
An electrostatic latent image is formed on the photoreceptor drum 119 according to image data due to potential distribution. Next, the photosensitive drum 119
The electrostatic latent image formed on the surface is visualized by toner in a developing device 113.

On the other hand, the transfer paper is fed from the paper feed cassette 109 or 110 by the paper feed roller 111 or 112 and reaches the registration roller 117. The registration rollers 117 are started at a timing corresponding to the amount of movement in the sub-scanning direction based on the image leading edge signal from the scanner, and are brought into contact with the photoreceptor drum 119 while nipping the transfer paper.

This transfer paper is conveyed while being electrostatically attracted by a transfer belt 120 charged by a transfer belt charger 121, and a transfer process is performed on the transfer paper in this state. At this time, the transfer charger 118
Transfer processing is performed by applying a polarity opposite to that of the toner for transferring the developed image on transfer paper 9 onto the transfer paper. The transfer paper after the transfer process is transferred to the transfer belt 12 by the belt separation charger 124.
After being electrically separated from 0 and further conveyed, it reaches the nip between the fixing roller 128 and the pressure roller 127, where the fixing process is executed, and then discharged onto the paper discharge tray 129.

After the transfer process, the photosensitive drum 119 is initialized by removing residual toner by a cleaning unit 125. Further, the separated transfer belt 120 is initialized by the belt static elimination charger 123, and one copy cycle is completed.

FIG. 2 is a block diagram showing the flow of data among the scanner unit 100, image processor 130, 131, printer 204, system controller 132, operation unit 107, editor 106, and external input device 201 of the present invention. .

In the block diagram shown in FIG. 2, thick arrows represent the flow of image data, and thin arrows represent the exchange of commands and signals.

Image data from the external input device 201 or the scanner unit 100 is processed by the image processors 130 and 131 and reproduced by the printer 204. Here, the operation section 107
When an instruction for italic processing is given from , shift data corresponding to the angle of the italic is output from the system controller 132 to the image processors 130 and 131.

FIG. 3 shows the italic processing circuit and shift circuit of the image processor, and shows a write address counter 301 whose count value is controlled by a signal from the system controller 132 and which indicates an address value for storing data, and a shift circuit. Write input data to address counter 30
A RAM 302 that stores and holds memory at an address indicated by 1;
A read counter 303 that indicates an address value for reading stored data, and a multiplexer (data selector) 304 that selectively inputs a plurality of signals from the circuit.
It is composed of.

In the configuration shown in FIG. 3, data input to the shift circuit is stored at the address indicated by the write address counter 301 of the RAM 302. In addition, the write address counter 3
01 indicates that the line in the sub-scanning direction has been switched.
The count value is initialized to the load data from the system controller 132 by the f1sync signal, and the count value is increased by the U/d signal from the system controller 132 indicating the positive/negative of the diagonal angle and the clock signal indicating the pixel in the main scanning direction. Or down (.

The RAM 302, which stores one line of data, reads out the data at the address value indicated by the read counter 303, and passes it to the next processing circuit in the image processors 130 and 131.

Read counter 303! ! , sy'nc signal is input, it is initialized by shift data given from the system controller 132. At this time, the load data from the system controller 132 is 1 in real time.
The shift data is given as data for each line, and the shift data is given as data that does not change during the copying process.

In the above-described configuration, a case will be described in which the document images in the main scanning direction X and the sub-scanning direction y are subjected to italicization processing at a scaling factor α.

Load data L1 and shift data L2 in FIG. 3 are calculated using the following formula.

In the formula below, 1 means the number of lines being processed, and X is the main scanning width and Y is the sub-scanning width of the transfer paper.

First, a first italicization process is performed in which the center point or a point similar to the standard image after scaling that should appear on the transfer paper overlaps the center point or a point similar to the center point of the image obtained by performing the italicization process on the standard image. When, ■ When the oblique angle is positive (θ
≧0) L1=1 ・When tanθ (y・α≧Y), L 2 =1'/'2 ・Y − tanθ(y・α
<Y”) when L2=1/:l”y-α・tanθ ■ When the oblique angle is negative (θ<0) LL-y-ta
When nθ-1・'tanθ (y・α≧Y), L2= 1/2− Y −t a′nθ (y・α<Y)
When L2=1/2・y・α・tanθ is calculated, and an italic image is obtained.

Also, compared to the standard image after scaling that should appear on the transfer paper, when performing diagonal processing in which the main scanning writing position shifts toward the rear end of the main scan as sub-scanning progresses, the leading edge of the sub-scanning after diagonal processing When using diagonal processing, in which the writing position is fixed to the leading edge of the standard image and shifts toward the leading edge of the main scanning as sub-scanning progresses, the trailing edge of the sub-scanning is fixed to the trailing edge of the standard image. When performing the second italic processing such as: ■ When the italic angle is positive (θ≧0) L1=1 ・t
anθL2=0 ■ When the italic angle is negative (θ〈0) (y・α≧Y)
When L1=Y-tanθ-1-tanθ (y・α<Y), L1=y・a・tanθ-1-tanθ is calculated,
Obtain an italic image.

Now, when applying italic processing to a standard image (original) as shown in Fig. 6(a), the italic processing as shown in Fig. 6(b) is set to a positive angle, and as shown in Fig. 6(C). When the first italic processing shown above is executed with the italic processing set at a negative angle, images as shown in FIGS. 4(a) and 4(b) are obtained.

The image after reduction and italic processing is shown in FIG. 4(C), and the image after enlargement and italic processing is shown in FIG. 4(d). As a result of the above, an image without any omissions can be obtained even after any of the italicization processes.

In addition, the second italic processing shown above is shown in FIG. 5(a), (
Images such as those shown in b), (C), and (d) are obtained.

Figure 5(a) shows a positive italic processing in which the movement amount is set so that the image at the tip of the sub-scanning is fixed relative to the standard image, and Figure 5(b) shows a negative italic processing in which the movement amount is set so that the image at the tip of the sub-scanning is fixed relative to the standard image. The amount of movement is set so that the image at the rear end of the sub-scanning direction is fixed relative to the image. Also, the reduced image at this time is shown in Figure 5 (C).
The enlarged image is shown in FIG. 5(d).

By applying italic processing to the standard image in this way, there is no image loss, and the position of the image obtained after the italic processing is easier to understand.

〔Effect of the invention〕

As explained above, according to the image editing method according to the present invention, with respect to the center point of the standard image or a point similar thereto,
Since the calculation is performed so that it overlaps with the center point of the image to be italicized or a similar point, there is less occurrence of partial loss of the image obtained by italicization even during enlargement and reduction.
Moreover, since the position of the italic image to be copied can be predicted from the position of the original, there is no possibility of copying errors.

Also, compared to the standard image after scaling that should appear on the transfer paper, when performing diagonal processing in which the main scanning writing position shifts toward the rear end of the main scan as sub-scanning progresses, the leading edge of the sub-scanning after diagonal processing When using diagonal processing, in which the writing position is fixed to the leading edge of the standard image and shifts toward the leading edge of the main scanning as sub-scanning progresses, the trailing edge of the sub-scanning is fixed to the trailing edge of the standard image. Therefore, the omission of the italic image during reduction is reduced, and the state of the italic-processed image after scaling is easily predicted, which improves the efficiency of copying work.

[Brief explanation of drawings]

1(a) and 1) are block diagrams of a digital copying machine using the image editing method according to the present invention, and FIG. 2 is a schematic block diagram showing the flow of data in the digital copying machine shown in FIG. FIG. 3 is a block diagram showing an italic processing circuit and a shift circuit of the present invention, and FIGS. 4(a) to (d) are claims (
5(a) to (d) are explanatory diagrams showing images obtained by italic processing based on claim (2) of the present invention; FIG. (a)～(
C) is an explanatory diagram showing an image subjected to conventional italic processing. Explanation of symbols 100-Scanner section 106...Editor 107--
Operation unit 130, 131... Image processor 132, System controller 201, - External input bag j1204, Blink 301, Write address counter 302, RAM 303, Read counter 304
multiplexer

Claims (3)

[Claims] (1) In an image editing method in which standard image data transmitted from an external input device or scanner is processed by an image processor to obtain an italic image, the standard image data and the italic information input from the operation panel to the system controller are used to The system controller outputs to the image processor line by line in real time so that the center point of the standard image or a point similar thereto overlaps the center point or a point similar thereto of the image obtained by the italic processing. An image editing method characterized in that an italic image is obtained by processing load data to be edited and shift data that does not change during image editing. (2) In claim 1, the standard image data and the italic information input from the operation panel to the system controller are such that as the sub-scan progresses, the main-scan writing position is toward the rear end of the main-scan, compared to the standard image. When italicized information is shifted to the original image, load data and shift data are calculated so that the leading edge of the sub-scanning after the italic processing is fixed with respect to the leading edge of the standard image, and the calculated results are output to the image processor to generate the italic image. An image editing method characterized by obtaining. (3) In claim 1, the standard image data and the italic information input from the operation panel to the system controller are such that as the sub-scan progresses, the main-scan writing position moves toward the leading edge of the main-scan, compared to the standard image. In the case of shifting italic processing, load data and shift data are calculated so that the rear edge of the sub-scanning after the italic processing is fixed with respect to the rear edge of the standard image, and the calculation results are output to the image processor to create an italic image. An image editing method characterized by obtaining.