JPS6220071A - Image information conversion system - Google Patents

Abstract

PURPOSE:To prevent the disappearance of an original image which is existing in a moving destination by discriminating a prescribed area by position information of image information, and applying a prescribed conversion to the position information of the prescribed area. CONSTITUTION:The titled system is provided with a processor 13, an address generator for applying address conversion in the processor 13, and an image memory 15 for storing the converted image information. Based on an (x) address signal 21 and a (y) address signal 22 which are inputted together with a raster data, whether the raster data exists in a prescribed area or not is judged, and when it exists in the prescribed area, address converting information is written in offset latches 25, 26. Accordingly, an (x) address signal 29 and a (y) address signal which are converted are outputted to an image memory 15, the raster data is written in a corresponding area of the image memory 15, and a movement of the image information is executed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image information conversion method for converting a predetermined area of input digital image data.

[Prior Art] Conventionally, this type of image processing apparatus performs various image processing operations after original image data is once stored in a random-accessible semiconductor memory. However, if the original image is an A4-sized document with 16 pixels/am and 8-bit data per pixel, the image information will be several MB of information, resulting in a huge cost for semiconductor memory, which poses a problem. was.

To solve this problem, for example, image processing J11! is performed on data input in raster form from an image input device. An image processing device that can perform this has been proposed.

FIG. 2 is a block diagram showing an example of the image processing device jδ. 8-bit digital image data is output in raster form from the original reading device lO1 or the magnetic disk 11,
It is input to the selector 12.

The image data selected by this selector 12 is processed by the processing device 13.
is inputted to the image memory 15 which stores the output data.
The address signal 18 is generated.

On the other hand, the image data is converted into a Z value by the dither circuit 14 and recorded in the image memory 15 according to the address signal 18. The image data that has been written into the image memory 15 is output to the printer 16. Therefore, since 8-bit image data is compressed to ⅛ by being binarized, it is possible to significantly reduce the cost of the semiconductor memory used in the image memory 15.

Second, when using this device to move image data in a specified range to another area, there is a problem in that the original image data disappears at the destination.

FIG. 3(a) shows the process of moving section A of original document 30 to section B. Section A is (X
l , yt), and section B is (X2°y2), then (X
2-Xl) and (y2-Yl) are the moving amounts of the image, and the address of the writing side image memory 15 is calculated from this difference.

The original document 33 is operated in the direction of the arrow 30, and image data is sent to the processing device 13 in this order. On the other hand, data is recorded in the image memory 15 according to the arrow 31 for portions that do not move as shown in FIG. 3(a), but raster data 3
2 is written to the location of the task data 34. Therefore,
Data was written on top of the previously recorded image B, and the image data of B was lost, making it impossible to perform image processing again using this result. Further, the same ato 1/s of the image memory 15 was written twice, which was a wasteful operation.

[Problems to be Solved by the Invention] The present invention was devised in view of the drawbacks of the above-mentioned conventional examples, and eliminates the drawback that the image at the destination is lost, and saves the original image for re-editing. The purpose is to do something.

Another object of the present invention is to exchange the positions of two images, exchange the positions of a plurality of images, and generate an arbitrary pattern at the location where the original image is placed, etc., in a single process. Means for Solving the Problem] As a means for solving this problem, for example, an image information processing apparatus for explaining the image information conversion method of the embodiment shown in FIG. The image memory 15 includes an address generator 32 that performs address conversion, and an image memory 15 that stores the converted image information.

[Operation] In the configuration shown in FIG. 1, it is determined whether the raster data is within a predetermined area based on the X address signal 21 and the Y address signal 22 input together with the raster data, and if the raster data is within the predetermined area, Write address conversion information to offset latches 25 and 26. As a result, the converted X address signal 29 and Y address signal 30 are output to the image memory 15, the raster data is written in the corresponding area of the image memory 15, and movement of one image information is executed.

``Embodiments'' [Description of Address Generator (FIG. 1), (FIGS. 4(a), (b))] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a block diagram of the image information processing device of this embodiment.
Parts common to FIG. 2 are indicated by the same symbols.

20 is a data source that generates 8-bit raster data; 3
2 are the X address signal 21 and the Y address signal 22 on the original side.
Therefore, the X address signal 29 and y on the image memory 15 side
An address signal 30 is generated. This is an address generator provided in the processing device 13. This address generator 32 will be explained below.

The X address signal 21 and y address signal 22 on the original side are as follows.
It is held by latches 23,24. These address signals 21 and 22 are added to the offset values sent from the control device 31 to the latches 25 and 26 by adder circuits 27 and 28, and the X address signals 29 and 29 of the image memory 15 are respectively
, y address signals 30 are generated.

FIGS. 4(a) and 4(b) show an example of image movement processing according to this embodiment. When scanning is currently being performed according to the arrow 40a as shown in FIG. 4(a), the fourth Figure (b) 4
As shown in 0b, when entering section B, -(X2
-xz) and -(y2yt) are the offset values of the control device 3.
1 and are applied to offset latches 25 and 26, respectively.

Furthermore, when the scan 41a enters the section A, offset values corresponding to (X2-xx) and (y2-yt) are set in the offset latches 25 and 26, respectively, as described above.

As a result, when the scan 41a enters section B, the X address signal 21 from the data source 20 is sent to x by the adder 27.
-(X2-xt), the y address signal 22 is sent to the adder 28
The signals are converted into y-(y2-yt) and outputted as an X address signal 29 and a y address signal 30 of the image memory 15, respectively. Similarly, when the operation 41a enters section A, the X address signal 29 becomes x+ (xz-
Xl), the y address signal 30 is y+ (y2-yt)
becomes.

As a result, image A moves to the specified location, and image B moves to the location where image A was located. Therefore, by saving image B, the next editing process can be performed using the results of this two-domain processing.

[Explanation of example of movement of multiple images (FIGS. 5(a) and (b))] FIG. 5(a) shows an example in which movement of multiple images is processed.

Considering the case where image sections A, B, C, and D are moved in the direction of the arrow, their respective representative points are A (xa,
ya), B (xb, yb), C (xc, yc), D
(xd, yd), when raster data moves in section A from the control device 31, (xc-xa), (y
output the offset value of c-ya). Similarly, when moving section B, (xd-xb), (yd-yb), section C
When outputting (xb-xc), (yb-yc) when partitioning, and (xa-xd), (ya-yd) when partitioning, the output is shown in Figure 5 (b) after - times of processing. You can change the position as shown below.

[Explanation of generating a specific pattern (Fig. 6), (
7(a) to (e))] FIG. 6 is a block diagram of a circuit that generates a certain pattern in the area where the original image A was located, and this circuit is, for example, the dither circuit shown in FIG. 1
4 and the image memory 15.

A pattern signal generated from the pattern generator 53 that has received a designation from the control device 31 is input to the selector 54 together with the image data 51 held in the latch 52, and is appropriately selected by the selector 54 according to the select signal 56 of the control device 31. It is output to the image memory 15 as output image data 55.

FIGS. 7(a) to 7(e) are examples in which several patterns are generated in the section where the original image A was when moving the image A to the part B.

Here, when the raster data passes through section A, each of the offset latches 25 and 26 (xb
-xa) and (yb-ya) and when the raster data passes through section B, the select signal 56 may be turned on to output the output of the pattern generator 53 through the selector 54.

FIG. 7(b) is a black pattern, and (C) is a diagonal line.

(d) shows a mesh, and (e) shows a case where a dot row pattern is generated.

[Control device image movement processing] Flowchart description (Fig. 1), (Fig. 4 (a), (b).

(FIG. 6), (FIG. 8)] FIG. 8 shows an operation flowchart of the image movement process of the CPU stored in the ROM of the control device 31.

In step S1, the offset latch 25. '26 is cleared to 0, and the image section information to be moved is input in step S2. This is the representative point (
xt, y 工), (xz′.

Yt'), (X2, Y2), (X2', V2'
) etc. In step S3, 8-bit raster data and, in synchronization with it, the X address signal 21 and the X address signal 22 of the raster data are input. In step S4, the X address signal 21. It is determined whether the X address signal 22 is included in each of the aforementioned sections.

If it is in the section, the process advances to step S5, and as explained earlier, for example, if it is in the section B, the offset latch 25 is set to (XI-X2) and the offset latch 26 is set to (yx-y2). . If it is not in the section, the process advances to step S6 and the offset latches 25 and 26 are cleared to O. Next, in step S7, it is checked whether one page of images has been completed, and if it has not been completed, the process returns to step S7.
Return to step 3 and perform the same operation.

In addition, the circuit shown in Fig. 6 is connected, and Fig. 7 (a) to
When outputting an image as shown in (e), it is determined whether a pattern needs to be generated after step S5 in the flowchart of FIG.
is turned on and the pattern generator 53 is driven to generate a specific pattern.

It is output in synchronization with the input of the y address signals 21 and 22.

Also, in step S6, the offset latches 25 and 26 are set to O.
This can be obtained by clearing and turning off the select signal 56.

In this embodiment, the raster data is explained as being 8 bits, but it is not limited to this, and the address information and section information of the image are not limited to the X-direction address as in this embodiment. , for example, address information corresponding to the address of the image memory.

[Effects of the Invention] As explained above, according to the present invention, in image movement processing, it is possible to prevent the original image at the movement destination from disappearing, and also to move a plurality of images and to create arbitrary patterns in sections after movement. This has the advantage that the occurrence of the problem can be done in a single process.

[Brief explanation of the drawing]

Fig. 1 is a schematic configuration diagram of an image information processing device for explaining the image information conversion method of this embodiment, and Fig. 2 is a schematic configuration diagram of the image information processing device. Figures 4(a) and 4(b) are diagrams for explaining the moving process of this embodiment. Figures 5(L) and (b) are diagrams for explaining the layout changing process of four images. Diagrams for explanation: Figure 6 is a block diagram of the pattern generator; Figure 7(a)
-(j) are explanatory diagrams showing an example of pattern generation, and FIG. 8 is a flowchart of the image movement operation of the control device. In the figure, 10... Original reading device, 12... Selector, 13... Processing device, 14... Dither circuit, 15...
...Image memory, 16...Printer, 21...
X address signal, 22...y address signal, 23.2
4...Latch, 25.26...Offset latch,
27°28... Adder, 31... Control device, 52.
. . . Latch, 53 . . . Pattern generator, 54 . . . Selector. Patent Applicant: Canon Co., Ltd. (C) i fawn (d) me 2ν engineering (e) F nt

Claims (3)

[Claims] (1) An image information conversion method characterized in that image information and position information of the image information are input, a predetermined area is determined based on the position information, and a predetermined conversion is performed on the position information of the predetermined area. (2) The position information of the first predetermined area of the image information is converted into the position information of the second predetermined area, and the position information of the second predetermined area is converted into the position information of the first predetermined area. An image information conversion method according to claim 1. (3) The invention comprises a pattern signal generation means for generating a specific pattern signal, and a selection means for selecting and outputting either image information or the pattern signal in a predetermined area. The image information conversion method described in Section 1.