JPH03122771A - Image editor - Google Patents

Abstract

PURPOSE:To efficiently execute correction even in the case of a wide correction by displaying the whole images to be edited on a display device, correcting the displaying image data and then collectively changing the original image to be edited. CONSTITUTION:Density-converted (low resolution) image data of high resolution image data read out from a scanner part 12 are corrected in accordance with the resolution of a display part 13 in order to display the whole image. Namely, the image concerned is corrected while displaying the whole image on the display part 13. Even when a correcting position occupies a wide range, the correction can be easily attained, and since the image data to be directly corrected is displaying image data with the small data volume, the image data can be efficiently processed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to an image editing device that edits image data read from a scanner device or the like.

(Prior Art) An image editing device that edits image data read from a scanner device or the like is provided with a pen function (writing), an eraser function (erasing), etc. as editing functions. Pen function.

The eraser function is executed by specifying a portion of an image displayed on a display device such as a CRT using a cursor and performing a predetermined key operation.

Usually, the image displayed on a display device is a part of the image read from a scanner device etc.
Editing is in progress. This is because the image data to be edited (original image data) read from the scanner device has a high resolution, and the entire image cannot be displayed on a low-resolution display device. In addition, by expanding and displaying the original image data as dots on the display device, the original image and the displayed image correspond to each other at the same resolution, so editing using the pen, eraser function, etc. using the displayed image is possible. Content to original image data (without need for density conversion)
It can be reflected as is. However, when performing wide-ranging editing, it is not necessary to perform editing while sequentially changing the images displayed on the display device. Therefore, although internal processing can be executed efficiently in this method, operability for the user is poor.

On the other hand, in order to improve operability, a method may be considered in which editing is performed by displaying the entire image on a display device. In this method, in order to display the entire original image read from a scanner device on a display device, this image data is subjected to density conversion according to the resolution of the display device. With such a method of displaying the entire image, editing can be performed over a wide range at the same time on one screen without changing the range of the displayed image. However, when the entire image is displayed and edited using a pen, eraser function, etc., it is necessary to perform density conversion again in order to reflect the edited contents of the displayed image in the original image data. In other words, when reflecting the edited content on the original image, density conversion (higher resolution) is performed according to the resolution of the original image for each pen tip size (cursor size) that is the unit of editing, and the The original image data is changed depending on the result. Such density conversion requires a lot of processing time (compared to simple logical operations). For this reason,
This method improves operability for the user, but
This reduces the efficiency of internal processing.

(Problem to be Solved by the Invention) As described above, in the method of displaying an image with the same resolution as the original image that does not require density conversion, since the displayed image is a part of the entire image, However, there was a problem of poor operability when performing wide-ranging editing. In addition, in the method of displaying the entire image by converting the density of the original image to be edited according to the resolution of the display device, the editing unit (the size of the pen tip) is used to reflect the editing contents in the original image. There is a problem in that it is necessary to repeat the density conversion for each process, which requires a lot of processing time.

The present invention was made in view of the above three points, and even when making extensive modifications, it does not reduce operability.
An object of the present invention is to provide an image editing device that can efficiently edit image data read from a scanner device or the like.

[Structure of the Invention] (Means for Solving Imposition) The present invention provides a display image that generates two identical display image data for displaying an entire image of an image pattern to be edited on a display device. data generation means; display image data editing means for editing one display image data while displaying an image pattern on a display device based on the display image data generated by the display image data generation means; and an exclusive OR of corresponding pixels of one display image data edited by the display image data editing means and the other display image data generated by the display image data generation means. a changed image data extracting means for extracting changed image data of a portion changed by editing, and changing the image data to be edited according to the changed image data extracted by the changed image data extracting means. and image data changing means.

(Function) According to this configuration, density conversion is performed on the image data to be edited according to the resolution of the display device, two pieces of image data for display are generated, and the entire image is displayed on the display device. let Then, using the image in which the entire image is displayed, editing is performed on the image data for one display. Therefore, there is no need to perform editing while changing the image displayed on the display device. In addition, when reflecting the editing contents of the display image data on the original image data, the image (
The modified image data) is extracted, and the modified image data is used to collectively modify the original image data. This reduces the processing time for internal processing in the entire image editing process.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an image editing device according to the same embodiment. In the figure, reference numeral 11 denotes a control section, which controls the entire apparatus. The control unit 11 includes a scanner unit 12 for inputting image data, and a display unit 13 for displaying images to be edited, etc.
, an input section 14 for inputting instructions such as editing contents 1 for the area to be edited, etc. for the image displayed on the display section 13, and an image read from the scanner section 12 under the control of the control section 11. An image correction unit 15 is connected to the image correction unit 15, which performs correction using a pen function, an eraser function, and the like. An image data management section 17 is connected to the image modification section 15 and performs registration, reference, update, etc. of image data stored in the image data storage section 16 according to the processing content of the modification section 15. The image data storage section 16 includes a display image data area 16a for storing display image data, an editing image data area 16b for storing editing image data read from the scanner section I2, and an editing image data area 16b for storing editing image data read from the scanner section I2. An image data management area IBc is provided for storing pointer information to the image data stored in the image data areas 16a and 18b. The image data for editing is the original image to be edited that has not been density-converted and is read from the scanner unit 12, and the image data for display is the original image whose density is changed to match the display resolution of the display unit 13. This is converted image data.

Next, the operation of this embodiment will be explained.

First, when image data to be edited is read from the scanner unit 12, the image correction unit 15 performs density conversion according to the display resolution of the display unit 13 based on this image data to create an image for display. Generate data. The image modification unit 15 transfers image data for editing (original image data) and image data for display generated by density conversion to the image data management unit 17. The image data management unit 17 registers the editing image data in the editing image data area 16b-1,
The display image data is stored in the display image data area 16.
Register on a1. Next, the image modification unit 15 requests the image data management unit 17 to call up the display image data stored in the display image data area 1 [1a-1, and copies this display image data as is. and transfers it to the image data management section 17. The image data management unit 17 stores the display image data generated by copying in the display image data area IB.
Store in a-2. Note that here, the display image data stored in the display image data areas 1ea-1 and 16a-2 are respectively stored in the first . This will be referred to as second display image data. (See FIG. 3.) Next, a case in which image data is corrected using the pen function will be described with reference to the flowchart of FIG. 2 and FIG. 3. When modifying image data, the control unit 11 controls the display image data area 16.
Using the first display image data stored in a,
Display the entire image on the display unit 13 (step Sl
). A portion of the image displayed on the display section 13 to be corrected (written) is indicated by, for example, a mouse cursor that moves in response to a mouse operation on the input section 14 (step S2). The mouse cursor is the unit of correction (size of the pen), and the area designated by the mouse cursor is the target of correction (writing). When an instruction is given from the input section I4 to modify any part of the image, control #1
1 instructs the image modification unit I5 to modify the first display image data. The image modification unit 17 modifies the first display image data stored in the second display image data area 16a via the image data management unit 17 (step S3).
).

After the pen function is completed, in the preprocessing stage for executing the next correction function, the image correction unit I5 copies and generates the corrected first display image data and the first display image data before correction. The second display image data thus obtained are synthesized by performing an exclusive OR (XOR) of corresponding pixels (step S4). That is,
By combining the image data before and after modification using exclusive OR, an image pattern (modified pattern) modified by the pen function is extracted. Next, the image modification unit 15 enlarges (density transforms) the modified pattern to the size of the editing image data (original image) (step S5). Further, the density-converted correction pattern data and the editing image data stored in the g-book image data area 16b are synthesized by calculating the logical sum (OR) of corresponding pixels. This allows editing image data to be changed in accordance with the content modified (written) using the pen function.

After changing the editing image data, the first
The second display image data is created by copying the display image data (step S7).

Next, regarding the case of correcting image data using the eraser function, the flowchart in Fig. 4 and the flowchart in Fig. 5 will be explained.
This will be explained with reference to the figures. When modifying the image data, the control unit If controls the display image data area 1.
The entire image is displayed on the display section 13 using the first display image data stored in ea-1 (step AI).

The part of the image to be corrected (erased) is indicated with a mouse cursor, etc. in the same way as with the pen function (Step A
2). When the input unit 14 instructs to modify any part of the image, the i-control unit 11 instructs the image modification unit 15 to modify the first display image data. The image correction section 17 is an image management section 17.
The first display image data stored in the display image data area 16a-1 is corrected (erased) via the display image data area 16a-1 (step A3).

After the eraser function is finished, in preprocessing for executing the next correction function, the control unit 11 uses the corrected first display image data and the first display image data generated by copying the first display image data before correction. The two display image data are synthesized by performing an exclusive OR (XOR) between corresponding pixels (step A4). That is, by combining the image data before and after modification using exclusive OR, an image pattern (modified pattern) modified by the eraser function is extracted. Furthermore, each pixel of the correction pattern is inverted (logical negation (N
OT)) to generate image data for the workpiece (step A5). This image pattern for the work is an image pattern that indicates portions (pixel positions) that are not erased by the eraser function. next,
The image modification unit 15 converts the image data for the workpiece into
The image is enlarged (density converted) to the size of the editing image data (original image) (step A6). Further, the density-converted workpiece image pattern and the editing image data stored in the editing image data area 113b-1 are synthesized by performing a logical product (AND) between corresponding pixels (step A7). From now on, depending on the content corrected (erased) using the eraser function,
Editing image data can be changed. After changing the editing image data, copy the first display image data to create second display image data (
Step A8).

Furthermore, by using such a method, undo can be easily performed. That is, processing using the pen, eraser function, etc. is performed in the display image data area 1ea.
This is performed for the first display image data stored in -1. Therefore, before the editing image data is modified (for example, in a preprocessing stage for executing the next modification function), the second display image data,
The image data for editing has not been changed. Therefore,
Undo can be executed by copying the second display image data to the display image data area lea.

In this way, the correction of the high-resolution image data read from the scanner section 12 is performed on the (low-resolution) image data that has been density-converted according to the resolution of the display section 13 in order to display the entire image. .

That is, while displaying the entire image on the display unit 13,
Since this image is modified, it can be easily executed even if the modification area is wide. Furthermore, the image data to be directly modified is image data for display with a small amount of data and can be processed efficiently. Furthermore, since one of the two display image data is targeted for editing, it is possible to perform an undo using the other display image data that has not been edited, making it easy to re-edit. .

[Effects of the Invention] As described above, according to the present invention, the entire image to be edited is displayed on the display device, and after the image data for display is corrected, the source image data to be edited all at once is displayed. Since the image is changed, even extensive modifications can be carried out efficiently.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the 114 components of an image editing device according to an embodiment of the present invention, FIG. 2 is a flowchart showing the processing procedure of the pen function according to the embodiment, and FIG. 3 explains the pen function. FIG. 4 is a flowchart showing the procedure of the eraser function, and FIG. 5 is a diagram for explaining the eraser function. 11...Control unit, 12...Scanner unit, 13...
Display section, 14... Input section, 15... Image correction section, 1G... Image data storage section, lea... Image data storage area for display, tab... Image data storage area for editing, IBe ...Image data management area, 17...Image data management section

Claims (3)

[Claims] (1) In an image editing device having a function of editing the image data while displaying an image pattern on the display device based on the image data to be edited, displaying the entire image of the image pattern on the display device. a display image data generating means for generating two identical display image data for the display; and displaying an image pattern on the display device based on the display image data generated by the display image data generating means. , a display image data editing means for editing one display image data; one display image data edited by the display image data editing means; and the other display image data generated by the display image data generation means. modified image data extraction means for extracting modified image data of a portion changed by editing by combining corresponding pixels of the display image data of the image data extracted by the modified image data extraction means; An image editing device comprising: image data changing means for changing the image data to be edited in accordance with the changed image data. (2) When editing the image data by writing, the image data changing means performs density conversion on the changed image data according to the resolution of the image data to be edited, and then performs density conversion on the changed image data according to the resolution of the image data to be edited. 2. The image editing apparatus according to claim 1, wherein the image data is synthesized by calculating a logical sum between corresponding pixels of the image data to be edited. (3) When editing the image data by erasing the image data, the image data changing means inverts the content of the changed image data, and converts the image data obtained thereby into a resolution corresponding to the image data to be edited. Image editing according to claim 1, characterized in that after performing density conversion, the image data after the density conversion and the image data to be edited are synthesized by performing a logical AND between corresponding pixels of the image data to be edited. Device.