JPH0421153Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an image processing device. More specifically, the present invention is based on the raw image
The image is processed using a display device with a display screen that has fewer display dots than the bit pattern in memory (a raw image is an image represented by a raw bit pattern that is not coded). Regarding the equipment for performing.

[Prior Art] Various techniques have been proposed for performing image processing or editing operations. For example, Japanese Patent Application Laid-Open No. 120534/1985 scans a document image, stores it in a memory as a bit pattern, and displays this on a display screen. The disclosure discloses that a portion of the image is displayed, further enlarged and displayed, and operations such as correction are performed. In addition, Japanese Patent Application Laid-Open No. 164386 is 2
Superimposing image data from two image sources is disclosed.

[Problems to be Solved by the Invention] In recent years, with the spread of personal computers, various image data sources have been connected to personal computers, and these various image data, such as graphics, have been displayed on personal computer display devices. There is an increasing demand for displaying information, text information and image information, either singly or in combination. However, personal
The number of display dots on the display screen of a computer display device is generally small, making image processing inconvenient. That is, when the number of certain images in the raw image buffer is greater than the number of dots on the display screen, the entire image cannot be taken out on the display screen, causing inconvenience in image processing.

[Means for solving the problem] This image processing device is capable of processing the rows and images to be displayed.
a display device having a display screen with a smaller number of display dots than the number of bits constituting the bit pattern; an all-points addressable buffer having storage locations, and reducing the raw image in the raw image memory to a size that can be accommodated in a predetermined area on the display screen and writing it to the all-points addressable buffer; in response to designation of a sub-area of said reduced raw image displayed above and a processing operation specified for said sub-area, regarding a bit pattern in said raw image memory corresponding to said sub-area; The image editing device includes an image editing device that rewrites the raw image memory after performing the specified processing operation.

The image editing device reduces the raw image in the raw image memory to a size that can be accommodated in a predetermined area on the display screen, writes it to the all-point addressable buffer, and displays the reduced image on the display screen. In response to designation of first and second sub-areas of the reduced raw image and processing operations specified for the first sub-area, the raw image memory corresponding to the first sub-area is [Embodiment] Figure 1 shows an image processing apparatus. is schematically shown. The display screen of the display device 1 has display points of 768 dots vertically and 1024 dots horizontally. An all-point addressable buffer 2 (hereinafter abbreviated as APA buffer) having bit storage locations equal to 768×1024 display points is provided. The bit pattern stored in this APA buffer 2 is displayed on the display screen.
A raw image memory 3 is provided to supply image data to the APA buffer 2. To explain the operation of storing a text raw image in the raw image memory 3 based on text data, that is, coded character data, coded character data and position data are stored in the text buffer from the data source 16 for one page of text. 1
Sent to 0. The position data includes tab information, space information, pitch information, etc., and defines the position of characters in one character line. The coded character data and position data are sent to a text image formatter 6. The text image formatting device 6 provides coded character data to a character generator 7 and decodes the position data;
The character bit patterns generated by the character generator 7 are then written into the row image memory 3 via the selection circuit 4 in an arrangement according to the position data. In this way, one page of text is written to a predetermined location in the raw image memory 3 as a character bit pattern or raw image.

Next, the operation of storing a graphic raw image based on graphic data provided from the data source 16 in the raw image memory 3 will be explained. A graphic image is an arc,
The graphic data is a figure such as a circle or a triangle, and the graphic data is, for example, data representing the coordinates and radius of the center point of the circle, and data representing the display position of the figure. Graphic data for one page is supplied to the graphics buffer 11 from a data source 16. The graphic data is then applied to a graphic image formatting device 8 which includes a device for decoding the graphic data to generate a predetermined circle, arc or rectangle bit pattern; Then, the generated graphic is written to a predetermined permitted location in the row image memory 3 via the selection circuit 4 based on the graphic display position data.

Similarly, raw images from image buffer 12 are written to predetermined allowed locations in raw image memory. The image referred to here is different from a text raw image and a graphic raw image, and is already in the form of a raw image at the time it is sent from the data source 16. Typically, this raw image is an image obtained directly from a document scanning device used in a facsimile terminal, or an image that is once stored in an external raw image memory and then obtained indirectly via a communication line, etc. It is an image that can be seen.

Writing of raw image data from the raw image memory 3 to the APA buffer 2 is controlled by the view port control device 5. A view port is a window on a display screen.
Set according to the operating mode. For example, the raw image memory 3 contains (A) one page of text raw image data, (B) one page of graphic raw image data, and (C) one page of raw image data. are stored respectively, the above (A), (B), and
(C) from raw image memory 3
Can write to APA buffer 2. Also, 2
Set up one or three small view ports on the display screen at the same time and use each view port
The portion of any two raw image data of (A), (B), and (C) that corresponds to the size of the view port is
Can write to APA buffer 2. This operation is generally called multi-window.

An image 21 having a number of bits greater than the number of display dots of the display device 1, that is, the number of bits of the APA buffer 2, is stored in the raw image memory 3, for example, and an operation for processing this image 21 on the display screen is performed. , will be explained with reference to FIG. Using the aforementioned document scanning device as the data source 16, and if the document is A4 size and the scanning density is 8PEL/mm (here PEL means pixels), one page of this document is For storage, a 1680×2360 bit memory area 21 is allocated to the raw image memory 3. If the display screen 22 has a size of 768 dots vertically and 1024 dots horizontally, the image of the A4 full page memory area 21 in the row image memory 3 cannot be displayed at once. Therefore, the 1680 x 2360 bit A4 full page image in the memory area 21 is displayed reduced to 1/N so as to fit in the view port or display area 23 of the display screen 22. This reduction operation is performed by the control device 7 decoding the instruction to display an A4 full page image on the display screen 23, instructing the image editing device 15 to reduce the image to 1/N, and responding to this. This is done by this device 15 sending the 1/N reduced image to the APA buffer 2 via the raw image memory 3. Therefore, the operator can view an A4 full page image at 1/N size. Then display this on the screen
A portion of an A4 full page image will be designated and image processing (for example, enlargement processing operation) for this designated portion will be explained. In this raw image mode, a portion is specified by displaying the rectangle 24 overlappingly on the display screen. To do this, the control device 7 controls the image editing device 15 in response to an operator's instruction to specify a portion.
This device 15 displays a point cursor 25 on the display screen 22. By inputting address data to the cursor control device 19 using the coordinate input device 18, the point cursor 25 can be freely moved on the display screen 22. The size of the rectangle 24 can be changed by inputting the coordinates of the upper left corner and lower right corner. Next, after the operator requests to specify the enlargement size, the point
The cursor 25 is moved to draw a rectangle 26. As the point cursor 25 moves, the size of the rectangle 26 changes. After specifying the enlargement size,
The image editing device 15 edits a rectangle 24 on the display screen.
and memory areas 27 and 28 on the row image memory 3 corresponding to the rectangle 26 are defined. Then, the image editing device 15 enlarges the image in the area 27 in the memory area 21 of the raw image memory 3 to an image of the size of the area 28, and rewrites the image in the area 28. That is, the processing areas 24 and 2 are displayed on the display screen 22 reduced to 1/N.
6 is specified, and the actual image enlargement process is performed using the raw
The actual image 27 in the image memory 3 is enlarged and rewritten in the area 28. This makes image processing easier for the operator, and on the other hand, since image processing is performed on the original data in the raw image memory 3, accurate data processing is possible.

Next, processing of the enlarged partial image will be explained with reference to FIG. Here, memory area 21
The A4 full page image is displayed at a reduction ratio of 1/N1 to fit in area 31 of display screen 22, and the portion of this A4 full page image designated by area 32 is enlarged to area 33. Is displayed. Then, an area 35 is designated with the point cursor 25 on the enlarged image, and image processing is performed on this area 35. This means that the operator instructs the control device 7 via the keyboard or on-screen display menu to display two images on the display screen, and in response, the control device 7 activates the image editing device 15. This is done by The editing device 15 reduces the A4 size full page image in the raw image memory 3 to 1/N1 and stores the A4 size full page image in the raw image memory 3 corresponding to the area 31 of the display screen.
is stored in the storage location. Image editing device 15 then edits the row image corresponding to area 32 on the display screen.
Specify the memory area 32A of the image memory 3, convert it to a size that fits in the area 33,
1/N1 already in raw image memory 3
Write next to the reduced image. Both images are then transferred to the APA buffer 2 and displayed on the display screen as shown in FIG. or right area 31
For , only the border line is displayed. The location and size of area 32 on the display screen can be changed by moving arrow 25 as described above.
This operation can be performed using the 1/N1 reduced screen on the right side.
This is particularly useful when an operator is viewing a full page image while observing details of desired portions. The operator can observe the image of the area 32 in detail on the left screen while performing an overall observation on the right screen. When the operator wishes to observe a new area 34, he/she designates this new area 34 through a predetermined procedure. In response to this designation, the image editing device 15 stores the memory area 21 of the image buffer 12 corresponding to this area 34 on the display screen.
The area 34A is designated, and the image of this area 34A is written at the position of the APA buffer 2 corresponding to the display screen 33. In this way, the operator can select a desired subarea on the right screen of the display screen 22 and observe details of this selected area on the left screen.

The operation of the raw image mode explained in connection with FIGS. 2 and 3 is based on the raw image memory 3.
This is done for all raw images in .
That is, when the above (A), (B) and (C) are mixed in the raw image memory 3, the operator can select any of (A), (B) and (C) as described above. You can perform editing operations such as enlarging, reducing, moving, and copying things.

The operation for specifying the area performed in FIGS. 2 and 3 will now be described. First of all, the control device 17
is the menu selection input from the display screen, i.e.
In response to the selection between the operation of FIG. 2 or the operation of FIG. 3, a signal representative of this menu selection is provided to image editing device 15. The controller 17 also provides this menu selection to the view port controller 5,
The view port controller 5 selects the view port 23 for the operation of FIG. 2, and selects the view ports 31 and 33 for the operation of FIG. The view port control device 5 determines the size of the view port currently in use and the corresponding row size.
A signal representing the ratio of the size of the areas in the image memory 3 and a signal representing the position of the view port are provided to the cursor control device 19. To explain the case where the operation shown in Figure 3 is selected, in this case 2
Two areas 32 and 34 are defined by the coordinate input device 18, such as a mouse or tablet, as follows. First, the point at the upper left corner of area 32 is input by coordinate input device 18 to cursor control device 19 and stored. The point cursor 25 is then moved to diagonally represent the size of the area 32 and the coordinate point of the final position is entered into the cursor control device 19. Based on the signals of these coordinate points and the signal from the view port control device 5, the cursor control device 19 sends an address signal of an area 32A on the row image memory 3 corresponding to this area 32 to the image editing device 15. send. Image editing device 1
Based on this, the bit pattern of area 32A is written in the area designated for this view port 33 with a size corresponding to this view port 33. This causes an enlarged image of area 32 to be displayed in area or view port 33 on the display screen.

The address of area 34A on raw image memory 3 corresponding to area 34 is then generated as follows. The coordinate input device 18 positions the point cursor 25 at the lower right corner of the area 34 and this coordinate point is input into the cursor control device 19. The point cursor 25 is then moved to the upper left corner of the area 34 and this coordinate point is entered into the cursor control device 19. This establishes the coordinate point of the upper left corner of the area 34. After this, the area 34 is
The size of the area 34 is determined, and the address of the area 34A on the raw image memory 3 corresponding to this area 34 is sent to the image editing device 15. The image editing device 15 then changes the bit pattern in the area 34A of the raw image memory 3 to a size corresponding to the view port 33.
Write to the area specified for port 33. This causes an enlarged image of area 34 to be displayed in view port 33 on the display screen.

Next, text mode and graphics mode will be explained. In graphic mode,
The circle is moved by pointing the center point of a figure displayed on the display screen, for example a circle, with the tip of the point cursor 25 and moving it. Graphics editor 14 detects the position of point cursor 25 and replaces this position data with previous position data. Based on this new position data, the graphic image formatting device writes a new circular dot pattern at a new position in the graphic raw image memory 4;
This can be displayed on the display screen via the APA buffer 2. In the text mode, the point cursor 25 is replaced by an area cursor whose size is approximately equal to the size of the displayed character. The operator moves the area cursor using the input device. The text editing device 13 detects the cursor position in response to the movement of the area cursor, and replaces the coded character data at the corresponding character position in the text buffer 10 in response to character deletion or modification processing by the operator. etc.

The above (A), (B) and (C) written to different locations in the raw image memory 3 lose their original form due to the editing operations shown in FIGS. 2 and 3 in the image mode. Changing or moving the image bit pattern due to this editing operation is performed using the raw image bit pattern.
done in memory 3, text buffer 1
0, graphic buffer 11 and image
The buffer 12 maintains data for reproducing the original shape. Therefore, when displaying the original form of each image again, the raw image memory 3 is reset and the buffers 10, 11 and 12 are
Re-enter by .

As mentioned above, the control device 17 applies appropriate control signals, timing signals, etc. to each device in FIG. 1, but in order to avoid complication of the drawing, in FIG. Circuit connections are omitted.

[Effects of the invention] According to the invention, an operator can extract and display any part of a raw image in a large capacity raw image memory on a display screen with a small number of display dots, and at the same time perform image processing. is performed on the original data in the raw image memory, allowing accurate processing operations. Therefore, it becomes easier for the operator to perform editing operations while performing accurate image processing.

[Brief explanation of the drawing]

FIG. 1 is a diagram schematically showing an image processing device;
Figure 2 is a diagram showing the correspondence between the raw image memory 3 and the display screen 22 when an A4 full page image is displayed in a reduced size and processed.
The figure shows the correspondence between the raw image memory 3 and the display screen 22 when image processing is performed by displaying an A4 full page image in a reduced size on the right side and enlarging a part of this reduced display screen on the left side. figure. 1...display device, 2...APA buffer, 3...
...Row image memory, 4...Selection circuit, 5
...View port control device, 6...Text/
Image formatting device, 7...Character generator, 8...Graphic image formatting device, 10...Text buffer, 11
...Graphics buffer, 12...Image buffer, 13...Text editing device, 14
... Graphic editing device, 15 ... Image editing device, 16 ... Data source, 17 ... Control device,
18... Coordinate input device, 19... Cursor control device, 22... Display screen.

Claims (1)

[Scope of claims for utility model registration] (1) An image processing device comprising the following (a) to (d). (b) Bits of the raw image to be displayed
Raw image memory that stores patterns. (b) A display device having a display screen with a smaller number of display dots than the number of bits constituting the bit pattern. (c) An all-point addressable buffer having memory locations corresponding to the number of display dots on the display screen. (d) The row image in the row image memory is reduced to a size that can be accommodated in a predetermined area on the display screen, and written to the all-point addressable buffer, and the reduced row image is displayed on the display screen. - in response to the designation of a sub-area of the image and the processing operations specified for the sub-area, the bits in the raw image memory corresponding to the sub-area are
The image editing device rewrites the raw image memory after performing the specified processing operation on the pattern. (2) The image editing device reduces the raw image in the raw image memory to a size that can be accommodated in a predetermined area on the display screen, writes it to the all-point addressable buffer, and displays the reduced image on the display screen. In response to the designation of first and second partial areas of the displayed reduced row image and the processing operation specified for the first partial area, the row image corresponding to the first partial area is A utility model registration characterized in that after performing the specified processing operation on the bit pattern in the image memory, rewriting is performed in the area of the raw image memory corresponding to the second partial area. An image processing device according to claim (1).