JPH0736437A - Picture data processor - Google Patents

Abstract

PURPOSE:To efficiently retrieve picture data by displaying image data and vector data by scrolling simultaneously and continuously in a picture data processing device used at the time of displaying picture data such as a map, a design drawing, etc. CONSTITUTION:Drawing information consisting of image data and vector data are stored in each corresponding information storage device in an information output part 18 by deviding the information into a matrix shape, and the divided pictures corresponding to coordinate areas which are sufficiently wider than an area to be displayed in a display device 16 are read-out from the information output part 18 while synthesizing respective images/vectors of each divided picture and they are stored in a picture storage device 14. When a scrolling is instructed by a scroll instructing part 11, the coordinate areas corresponding to a scrolling range are calculated by a coordinate analyzing part 12, and picture data in which the synthesization of images/vectors is completed and which corresponds to the scrolling range are extracted from the picture storage device 14 to a picture input and output part 13, and displayed on the display device 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image data processing device used when displaying image data such as maps and design drawings.

[0002]

2. Description of the Related Art Conventionally, an image data processing apparatus for displaying image data such as a map or a blueprint, and adding / deleting vector data to / from the displayed image data to create new image data has a basic The maps and blueprints are
The image data is optically read by an image scanner and stored in an image memory, and the image data is displayed on a display unit such as a CRT.

For the image data displayed on the display section of the image data processing apparatus, new image data is appropriately generated by adding vector data, etc. In this case, the image data is left as it is. The vector data is stored in a disk or the like as digital data, and the vector data is converted into vector coordinates indicating the start point and the end point of each vector by raster / vector conversion and stored in another area such as the disk.

The image data stored in the disc or the like is read out in correspondence with the designated display area and displayed on the display unit, and the vector data to be combined with the displayed image data is the above-mentioned. After being read as vector coordinates from a disk or the like, vector / raster conversion is performed and the combined display is performed on the display unit.

Here, when scrolling is instructed to the composite image data of the image / vector displayed on the display section, the image data is continuously read and displayed corresponding to the instructed scroll range. Since the vector data takes time to convert from the vector data to the raster data, it is not possible to simultaneously and continuously scroll the image data in parallel with the scroll display of the image data. Actually, the scroll of the image data ends. At that time, the vector data corresponding to the display range is read, vector / raster conversion is performed, and combined display is performed.

[0006]

Therefore, in the conventional image data processing device, the vector data cannot be simultaneously and continuously scrolled in parallel with the scroll display of the image data, so that the image data cannot be efficiently retrieved. There was a problem.

The present invention has been made in view of the above problems,
An object of the present invention is to provide an image data processing device capable of efficiently displaying image data and vector data by scrolling the image data and vector data continuously in a continuous manner.

[0008]

That is, the image data processing apparatus according to the present invention displays two-dimensional image data and vector data at the same time, and the drawing information is stored separately for the image data and the vector data. Information storage device, vector / raster conversion means for converting vector data stored in the information storage device into vector image data, vector image data converted by the vector / raster conversion means and the information storage device. An image secondary storage means for storing image data obtained by combining the stored image data, a display device for displaying the image data, and a memory area sufficiently containing the displayed image data to be displayed on the display device, Image storage device for storing vector / image combined image data read from the image secondary storage means A scroll instruction means for instructing scrolling of displayed image data displayed on the display device, and displayed image data corresponding to a scroll instruction range by the scroll instruction means from the image storage means and displayed on the display device. Display control means for displaying, scroll prediction means for predicting the scroll direction based on scroll instruction information by the scroll instruction means,
Image updating means for reading out from the image secondary storage means image data that should be continuous with the image data stored in the image storage device corresponding to the scroll direction obtained by the scroll prediction means, and writing the image data in the image storage device. It is configured with and.

[0009]

That is, since the image data extracted from the image storage device and scroll-displayed on the display device is already image-synthesized with the image data and the vector data, the same processing as the scroll display of only the image data is performed. It will be scrolled at the same time.

Then, in the image storage device, in the direction in which the displayed area is scrolled by scroll display,
The image data after the image / vector combination that should be continuous in the scroll direction is replenished and updated by the image updating means,
A standby state for the next scroll instruction operation is set.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a functional block diagram showing the configuration of the image data processing device. This image data processing device includes a scroll instruction unit 11, a coordinate analysis unit 12, an image input / output unit 13, an image storage device 14, a display output unit 15, a display device 16, a scroll prediction unit 17, an information output unit 18, and an image update unit. Equipped with 19.

The scroll instruction section 11 indicates the scroll range of the image data displayed on the display device 16 by, for example, a key input operation, a mouse operation, an icon operation or the like.
The scroll range instruction data from 1 is given to the coordinate analysis unit 12.

The coordinate analysis unit 12 calculates a coordinate area corresponding to the scroll range of the image data stored in the image storage device 14 based on the scroll range instruction data given from the scroll instruction unit 11. The scroll coordinate data calculated and analyzed by the coordinate analysis unit 12 is given to the image input / output unit 13.

The image input / output unit 13 displays the coordinate area corresponding to the scroll display range from the image data stored in the image storage device 14 based on the scroll coordinate data provided from the coordinate analysis unit 12. The image data is extracted, and the displayed image data extracted from the image storage device 14 by the image input / output unit 13 is given to the display output unit 15 and displayed on the display device 16 such as a CRT.

The image storage device 14 is the display device 1.
Image data corresponding to a coordinate area that is sufficiently wider than the display range in 6 is stored. In the image storage device 14 of the present embodiment, for example, a coordinate area that is three times the vertical and three times the horizontal display area is used. The image data corresponding to the above is stored, and the image data of the coordinate area corresponding to the above-mentioned scroll instruction range in any direction up, down, left or right is extracted with the current display area as the center.

On the other hand, the scroll prediction section 17 is based on the change of the scroll coordinates corresponding to the scroll display range given from the coordinate analysis section 12 to the image input / output section 13.
The scroll direction and the scroll amount are obtained, and the scroll prediction information from the scroll prediction unit 17 is
It is given to the information output unit 18.

The information output section 18 includes a large number of information storage devices 20, .... The information storage device 20, ...
Divides the image data of the entire drawing information consisting of image data and vector data into a large number of image areas in a matrix, and the image data and vector data corresponding to the individual areas of the divided image are stored in the image data storage area 20i. And the vector data storage area 20v, the image data and the vector data divided and stored in each of the large number of information storage devices 20, ... Are scroll prediction information provided from the scroll prediction unit 17. The vector data is vector / raster-converted through the VRC calculation unit 21 into a vector image, which is then supplied to the image secondary storage device 22 together with the image data and is stored therein.

If, for example, the scroll direction is found to be right and the scroll amount is found to correspond to four of the divided images, based on the scroll prediction information from the scroll prediction section 17, the image storage device 14 is currently storing the scroll image. 4 in each of the divided images at the right end of the stored image data
The divided images for each piece are read out via the corresponding image secondary storage devices 22 of the information output unit 18 and given to the image updating unit 19.

The image update unit 19 uses the image data read from the information output unit 18 based on the scroll prediction information from the scroll prediction unit 17 to the image input / output unit 13.
The image data is stored in the image storage device 14 via the, and the image data stored in the image storage device 14 is updated so that the currently displayed image area after scrolling this time is positioned at the center of the image data. In this case, image data corresponding to a coordinate area that is nine times as large as the displayed area that can be scrolled by one display screen from the current display area in the vertical and horizontal directions is always stored.

Next, the operation of the image data processing apparatus having the above configuration will be described. FIG. 2 is a diagram showing the relationship between the image storage state in the image storage device 14 of the image data processing device and the display areas Dx and Dy for the display device 16.

That is, the image data stored in the image storage device 14 is the information storage device 2 of the information output unit 18.
It is managed in correspondence with the divided images Px and Py which are divided and managed by 0, ..., And is sufficiently wider than the displayed regions Dx and Dy extracted by the image input / output unit 13, for example, in a 9-fold coordinate region. Corresponding image data is stored.

FIG. 3 is a diagram showing an image update state from the information output unit 18 for the image storage device 14 after scroll display of the image data processing device. That is, after the scroll display, when the scroll prediction unit 17 obtains the scroll direction and the scroll amount in divided image units, the divided image following one end of the image data on the image storage device 14 corresponding to the scroll direction is It is read from the information storage devices 20, ... And updated according to the scroll amount, and the current display region is set to be located in the central coordinate region on the image storage device 14.

FIG. 4 is a diagram showing a division image reading state from the information storage devices 20, ... In the information output unit 18 of the image data processing device. That is, based on the scroll prediction information from the scroll prediction unit 17, the image data and the vector data corresponding to the one divided image are read from the image data storage area 20i and the vector data storage area 20v of the information storage device 20 ,. Then, the vector data is converted into raster data via the VRC calculation unit 21, and is stored in the image secondary storage unit 22 after being combined with the image data.

In this case, different display color information is added to the image data and the vector image data that are combined and stored in the image secondary storage device 22 so that they can be distinguished at the time of display.

The image data synthesized and stored in the image secondary storage unit 22 is transferred from the image updating unit 19 to the image storage device 14 via the image input / output unit 13 and stored therein. That is, the image storage device 14 stores the image data obtained by combining the image data and the vector data, and the image input / output unit 13
The image data corresponding to the display area extracted by
It is displayed on the display device 16 via the display output unit 15 as it is.

That is, when the operation of the image data processing device is started, first, each divided image corresponding to a preset area of the drawing information stored in the information output unit 18 is stored in the information storage device 20, From the VRC calculation unit 21 and the image secondary storage device 22, and the image update unit 19
And is transferred to and stored in the image storage device 14 via the image input / output unit 13.

At this time, the image storage device 14 reads and stores image data corresponding to, for example, a nine-fold coordinate area which is three times the vertical and horizontal directions of the displayed area, and the central portion thereof is used as the displayed image data. It is extracted by the image input / output unit 13 and displayed on the display device 16 via the display output unit 15.

In this case, the image data portion and the vector image data portion displayed on the display device 16 are displayed in different colors. Here, when the scroll display unit 11 is instructed to scroll the image data displayed on the display device 16 to the right, for example, based on the scroll range instruction data,
A coordinate area corresponding to the scroll range of the image data stored in the image storage device 14 is calculated by the coordinate analysis unit 12 and given to the image input / output unit 13.

Then, in the image input / output unit 13, based on the scroll coordinate data provided from the coordinate analysis unit 12, the coordinate area corresponding to the scroll display range is covered from the image data stored in the image storage device 14. The display image data is extracted, and the display device 1 is output via the display output unit 15.
6 is displayed.

In this case, the image data extracted from the image storage device 14 and scroll-displayed on the display device 16 is:
Since image data and vector data have already been image-synthesized, simultaneous scroll display can be performed at the same processing speed as scroll display of only image data.

Here, based on the change in the scroll coordinates corresponding to the scroll display range given from the coordinate analysis unit 12 to the image input / output unit 13, the scroll direction and the scroll amount are obtained by the scroll prediction unit 17. According to the scroll prediction information, each divided image continuous in the scroll direction with respect to the image data stored in the image storage device 14 is read from the information output unit 18 according to the scroll amount, and the image update unit 19 is operated. The image data in the image storage device 14 is updated via this.

That is, for example, the scroll prediction unit 17
If the scroll direction obtained in step 1 is “right” and the scroll amount (width) is two divided images, the right end of the image data currently stored in the image storage device 14 should be 2 consecutively. Image data and vector data corresponding to the individual divided images are read from the corresponding information storage devices 20, ..., The vector data are converted into raster data via the VRC calculation unit 21, and the image secondary storage device is converted. The image data is combined and stored at 22.

As a result, the image storage device 14 has
By the scroll display, the image / vector composite image data which is continuous in the scrolling direction and has a width of only the scrolled area is replenished and updated through the image updating unit 19, and a standby state for the next scroll instruction operation is set. .

Therefore, according to the image data processing device having the above structure, the drawing information consisting of the image data and the vector data is divided into a matrix and stored in the corresponding information storage devices 20, ... Of the information output unit 18. ,
In the image storage device 14, a divided image corresponding to a coordinate area that is sufficiently wider than the display area in the display device 16 is read from the information output unit 18 by combining the images / vectors of the divided images and stored therein. When a scroll instruction is given by, the coordinate analysis unit 12 calculates the coordinate area corresponding to the scroll range, and the image / vector combined image data corresponding to the scroll range is input / output from the image storage device 14 from the image input / output device 14. The data is extracted by the unit 13 and displayed on the display device 16, and the scroll direction and the scroll amount are obtained by the scroll prediction unit 17, and based on the scroll prediction information,
The image / vector-combined divided image data corresponding to the scroll amount is read from the information output unit 18 so as to be continuous in the scroll direction of the image data in the image storage device 14 and stored in the image storage device 14 via the image update unit 19. Therefore, even in the case of image data including vector data, scroll display can be performed at high speed as in the case of only images, and drawing information can be efficiently searched.

The image data updated in the image storage device 14 on the basis of the scroll prediction information is stored in each of the information storage devices 20, ... Of the information output section 18 and is a divided image obtained by dividing drawing information in a matrix. Since the processing is performed in units, it is possible to easily update the image data in the image storage device 14 in correspondence with any scroll direction and scroll amount (width).

[0036]

As described above, according to the present invention, two-dimensional image data and vector data are displayed simultaneously, and an information storage device in which drawing information is stored independently for the image data and the vector data is provided. Vector / raster conversion means for converting vector data stored in the information storage device into vector image data, vector image data converted by the vector / raster conversion means, and image data stored in the information storage device Image secondary storage means for storing image data obtained by combining the image data, a display device for displaying the image data, and a memory area sufficiently containing the displayed image data to be displayed on the display device. An image storage device for storing the read image data after the vector / image combination, and an object displayed on the display device. Scroll instruction means for instructing scrolling of the indicated image data, display control means for extracting the image data to be displayed corresponding to the scroll instruction range by the scroll instruction means from the image storage means and displaying it on the display device, and the scroll instruction Scroll prediction means for predicting the scroll direction based on the scroll instruction information by the means, and image data to be continuous with the image data stored in the image storage device corresponding to the scroll direction obtained by the scroll prediction means. Since the image updating means for reading from the image secondary storage means and writing the image data into the image storage device is provided, the image data and the vector data can be simultaneously and continuously scroll-displayed to efficiently retrieve the image data. It will be possible.

[Brief description of drawings]

FIG. 1 is a functional block diagram showing the configuration of an image data processing apparatus according to an embodiment of the present invention.

FIG. 2 is an image storage state in the image storage device of the image data processing device and display areas Dx and D for the display device.
The figure which shows the relationship with y.

FIG. 3 is a diagram showing an image update state from an information output unit for the image storage device after scroll display of the image data processing device.

FIG. 4 is a view showing a division image reading state from the information storage device in the information output unit of the image data processing device.

[Explanation of symbols]

11 ... Scroll instruction unit, 12 ... Coordinate analysis unit, 13 ... Image input / output unit, 14 ... Image storage device, 15 ... Display output unit,
16 ... Display device, 17 ... Scroll prediction unit, 18 ... Information output unit, 19 ... Image updating unit, 20 ... Information storage device, 21
... VRC (vector / raster) calculation unit, 22 ... Image secondary storage unit.

Continuation of front page (51) Int.Cl. ⁶ Identification number Office reference number FI Technical display location G09G 5/36 530 C 9471-5G

Claims (3)

[Claims] 1. An image data processing device for simultaneously displaying two-dimensional image data and vector data, and an information storage device in which drawing information is stored independently for the image data and the vector data, and to this information storage device. Vector / raster conversion means for converting the vector data to be converted into vector image data, and image data obtained by combining the vector image data converted by the vector / raster conversion means and the image data stored in the information storage device. Vector / image combination read out from the image secondary storage means, which has an image secondary storage means, a display device for displaying image data, and a memory area sufficiently containing the displayed image data to be displayed on the display device. An image storage device for storing the subsequent image data, and a displayed image displayed on the display device. Scroll instructing means for instructing scrolling of image data, display control means for extracting displayed image data corresponding to a scroll instructing range by the scroll instructing means from the image storing means, and displaying it on the display device, and the scroll instructing means Scroll prediction means for predicting the scroll direction based on the scroll instruction information by the scroll prediction information, and image data to be consecutive to the image data stored in the image storage device corresponding to the scroll direction obtained by the scroll prediction means. An image data processing device, comprising: an image updating device for reading from an image secondary storage device and writing the image data in the image storage device. 2. The image data processing apparatus according to claim 1, wherein the drawing information stored in the information storage device is divided and managed in a matrix. 3. The image updating means updates the image data stored in the image storage device based on the scroll prediction information obtained by the scroll prediction means corresponding to the end time of the scroll display by the display control means. The image data processing apparatus according to claim 1, wherein