JPH03105393A - Method for specifying expanding/contracting processing of image - Google Patents

Abstract

PURPOSE:To improve the operability of image expanding/contracting processing by executing operation for expanding/contracting an original image by the same vertical/horizontal ratio as that or the original one and operation for expanding/contracting the original image by a vertical/horizontal ratio different form that of the original one in the same mode. CONSTITUTION:When image data for executing edition processing is displayed on a CRT 2, commands effective for edition operation are displayed. A com mand 'deformation' for expanding/contracting an image is selected out of the displayed commands and the range of image data to be expanded/contracted is specified by a cursor. When the specification is completed, a guide line G is automatically displayed on a diagonal of a range specifying frame W. When the cursor is moved and a deformation specifying frame D1 is specified on a position other than the line G, the original image is expanded/contracted by the size changed from the vertical/horizontal ratio of the original image and a circle is displayed as an ellipse or the like. Thus, the operability of processing expanding/contracting an original image by a vertical/horizontal ratio different form that of the original image can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an instruction method when editing image data using a CRT display device of a computer.

[Conventional technology]

When editing image data using a computer's CRT display device, there are two ways to enlarge or reduce a specific image: keeping the same aspect ratio and enlarging it by transforming it (changing the ratio). There is a reduction operation, and conventionally, it is common to provide separate modes for each and perform respective processing for each mode. In other words, an operation mode in which the image is enlarged or reduced in the same aspect ratio and an operation mode in which the image is enlarged or reduced in a different aspect ratio are provided, and these are processed separately.

[Problem to be solved by the invention]

However, when doing this, different modes must be selected for enlargement and reduction operations depending on whether the aspect ratios are the same or different, which makes the operation complicated and reduces operability.

[Means to solve the problem]

When enlarging or reducing an image displayed on a CRT display device of a computer, when specifying the range of the image to be enlarged or reduced, a guideline is displayed on the diagonal of the range specification frame, and a guideline is displayed on the diagonal of the range specification frame, and a By specifying the instruction frame for enlargement or reduction at the position of , you can enlarge the original image to the same ratio or different ratios in height and width. Enable reduction processing to be executed in the same mode.

[Effect]

When enlarging or reducing image data, it is now possible to perform in the same mode the operation of enlarging or reducing the height and width while keeping the same ratio as the original image, and the operation of changing the ratio of height and width to that of the original image. to simplify operation and improve operability.

〔Example〕

FIG. 1 is a flowchart showing an embodiment of the invention, and FIG.
Figure 3 is a block diagram showing the device to which this invention is applied.
6 to 3F are explanatory views for specifically explaining the present invention, and the following description will be made with reference to these figures.

First, as shown in FIG. 2, the computer 1 has a CRT.
A device 2, a keyboard 3, and a mouse 4 are connected to the CRT device 2, and data to be edited by a computer is displayed on the CRT device 2.

When the display of the image data is completed, commands valid for editing operations are displayed accordingly. The display example is shown in 3A.
As shown in the figure. The figure shows an example where a "yen" is displayed,
The symbol P indicates a display screen, and "move", "copy", etc. indicate commands. Next, from among these commands, select "Transform", which is a command for enlarging or reducing, using i! [Then, use the cursor to specify the range of image data to be enlarged or reduced (see ■, ■). The result of this designation is shown in FIG. 3B. Reference numeral W in the figure indicates a range indication frame.

Subsequently, when the designation is completed, the computer 1 automatically displays a guideline G as shown by the dashed line in FIG. 3C on the diagonal of the range designation frame W in FIG. 3B (
■Reference). Furthermore, by moving the cursor,
A deformation instruction frame D as shown in FIG. 3D appears, and this deformation instruction frame D is designed so that an arbitrary size for enlarging or reducing the original image can be specified using a mouse or a keyboard. The size of the transformation instruction frame D can be changed by clicking the mouse or by clicking "Execute" on the keyboard.
The change is confirmed by pressing the key, and until then the change operation can be repeated and executed freely (see ■, ■).

Finally, when the transformation instruction frame is determined to the desired size to be enlarged or reduced (see ■), the original image data is edited again to match the size (see ■).

Here, when the transformation instruction frame is determined on the diagonal line, that is, the guideline shown in Figure 3C, the original image will be enlarged and reduced in the same proportions, and will be transformed at other positions. Once the designated frame is determined, the original image will be enlarged or reduced in size with a different aspect ratio.

For example, if the transformation instruction frame is fixed at the position DI of the broken line in Figure 3E, the original shape ``circle'' will be transformed into an ``ellipse'' as shown in Figure 3F, with its aspect ratio changed. [Effects of the Invention] According to this invention, an image can be enlarged or reduced while keeping the same aspect ratio as the original image, and it can be transformed (changed in proportion). Not only can you perform enlargement and reduction operations in one mode, but you can also perform both operations using the same operating procedure.
The advantages are that the operation is simple and the operability is improved.

[Brief explanation of drawings]

FIG. 1 is a flowchart showing an embodiment of the present invention;
The figure is a block diagram showing an apparatus to which this invention is applied.
Figure A to Figure 3F are all explanatory diagrams for specifically explaining the present invention. Description of symbols 1...Computer, 2...CRT display device, 3.
...Keyboard, 4...Mouse, P...Display screen,
W...Range indication frame, G...Guideline, D, Di
...Transformation instruction frame.

Claims (1)

[Claims] 1) When enlarging or reducing an image displayed on a CRT display device of a computer, when the range of the image to be enlarged or reduced is specified, a guideline is displayed on the diagonal of the range specification frame, and a guideline is displayed on the diagonal of the range specification frame. Or by specifying the instruction frame for enlarging or reducing at any other position, it is possible to perform enlarging or reducing the original image in the same or different ratios in the vertical and horizontal directions in the same mode. How to instruct images to be enlarged or reduced.