JPS62269271A - Area indicating device - Google Patents

Abstract

PURPOSE:To make it possible to designate an objective image area simply by detecting the direction of movement of a cursor etc., displaying an area between a reference axis and the cursor at the time of moving in positive direction, and deleting a picture image between the reference axis and cursor and designating an area in specific extent. CONSTITUTION:When the specific position of a displayed picture is indicated by an indicating means 1, the indicating means 1 outputs data of the position to an area indicating means 2. The area indicating means 2 indicates a linear area between the reference axis and a position indicated by the indicating means 1 perpendicular to the reference axis and passes a position indicated by the indicating means 1 as a specific area. Thus, an area indicating device that indicates an area of optional graphic by simple operation can be formed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image processing device, and particularly to an area designation device for designating a part of a display image.

[Summary of the invention]

Cutting out or erasing unnecessary images from a displayed image requires a device that indicates the area to be processed. The present invention detects the direction of movement of a cursor, etc., displays the area between the reference axis and the cursor when moving in the positive direction, and deletes the image of the area between the reference axis and the cursor when moving in the negative direction. According to the present invention, it is possible to easily specify a target image area.

[Traditional techniques]

An image input/output processing device is a device that takes in data from an input device such as an image league or a camera, performs various processes such as cutting out a specific range, erasing unnecessary images caused by noise, etc., and outputs it to an external device. be.

The aforementioned cropping process and deletion of unnecessary images require a circuit that specifies the area to be cropped and the area to be erased. The area designated by this area designation circuit is cut out or erased.

Conventionally, the above-mentioned area specifying circuits include a method of specifying a rectangular area (an area determined by the upper left corner and lower right corner) using two points, and a method of specifying a dot unit using a cursor or the like. .

[Problem that the invention sought to solve]

In the conventional area specification circuit described above, the former method is
When an arbitrary figure has diagonal lines, it is necessary to make the rectangular region very thin and repeat the process multiple times. Because, 2
This is because each side of the rectangular area indicated by a point or the like is parallel to the horizontal and vertical sides of the image, and one side of the rectangular area cannot represent the shaded area. For this reason, there was a problem in that it took a lot of time to specify a small area (such as a diagonal line).

Furthermore, although the latter method has the feature of being able to specify small areas in detail, it has the problem that when specifying a wide area, it is necessary to specify all the dots in that area. When there are many dots to configure,
There is a problem in that it is easy to leave the dots unerased or make cutting mistakes, and even if such mistakes occur, it is difficult to notice.

SUMMARY OF THE INVENTION In view of the above-mentioned drawbacks of the conventional art, an object of the present invention is to provide an area specifying device for specifying an area of an arbitrary figure with a simple operation.

[Means for solving problems]

FIG. 1 is a block diagram of the present invention. Reference numeral 1 indicates an indicating means for indicating the position of the display image, and 2 indicates a straight line area that is perpendicular to a reference axis, passes through a position indicated by the indicating means, and is between the reference axis and the position indicated by the indicating means. This is an area specifying means for specifying as an area.

[For production]

When a specific position of the display image is specified using the ↑ movement means 1,
The indicating means 1 outputs the data of the position to the area indicating means 2. Based on the data of the added position, the area specifying means 2 passes through the position perpendicular to the reference axis and indicated by the indicating means 1, and moves to the position 1 indicated by the reference axis and the indicating means.
The direct '4IAjJI area between them is specified as a specific area.

〔Example〕

Hereinafter, the present invention will be explained in detail using the drawings.

FIG. 2 is a circuit diagram of an embodiment of the present invention.

A processor (CPU) 3, an arithmetic register 4, an image buffer 5, an image reader 6, a memory 7, a key input section 8, a mouse 9, and an auxiliary storage device 10 are connected to the pass line BUS. The processor 3 executes a program stored in the memory 7, for example, and connects the pass line BUS.
It controls each device connected to the camera and performs image processing. The image reader 6 is a device that reads photographs and the like and converts them into image data. Image data read by this device 6 is stored in an image buffer 5 under the control of the processor 3. As will be described later, the image buffer 5 has an image memory for storing image data and a CRT controller, and the data stored in the image memory 5 is converted into an image signal by the CRT controller and displayed on the display device 11.

On the other hand, the key input unit 8 and the mouse 9 are operating units for performing various display image processing, and various processes are driven by the operator's operations on these operating units. Further, the arithmetic register 4 is a circuit that detects the movement of the mouse cursor, and this circuit detects the movement of the mouse cursor and executes processing for cropping control. The auxiliary storage device 10 is an auxiliary memory that stores image data and programs.

FIG. 3 is a detailed explanatory diagram of an embodiment of the present invention.

For example, when the aforementioned mouse is moved, the coordinates of a new cursor are stored in the registers xO, yO of the arithmetic register 4 under the control of the processor 3, and the coordinates of the cursor added immediately before are stored in the registers xi, yl. The arithmetic register 4 has a comparison circuit 4-1, and the comparison circuit 4-1 compares the contents of register yO and register yl. Registers xO and xi are registers that store the coordinates of the X axis (horizontal side of the displayed image), and registers yo and y1 are registers that store the coordinates of the y axis (horizontal side of the displayed image). The comparator circuit 4-1 always performs a comparison operation, and when they do not match, it issues an interrupt request to the processor 3. Processor 3 executes interrupt processing in response to this interrupt request.

FIG. 4 is an operational flowchart of interrupt processing performed in response to an interrupt request. When the processor 3 executes interrupt processing, it first determines whether the cursor is moving upward or downward. That is, the contents of the register y1 are calculated from the contents of the register yo, and the direction of movement is detected depending on whether the result is positive or negative. Note that a result of 0 means that the cursor has not moved in the y-axis direction, which is impossible when this process is executed.

In the discrimination process S1, the lower direction, that is, the subtraction result is positive (in the embodiment of the present invention, the upper left corner of the display image is the origin,
(with the downward direction and the right direction being the positive direction),
First, a process S2 is performed in which one line of image data from the reference value to the cursor position is stored in a save buffer.

That is, as shown in FIG. 3, an image memory and a save buffer 7-1 are connected to the pass line BUS.
Under the control of the processor 3 via this bus described above, the image data for the tran from the reference line to the cursor position is successively outputted from the image memory 5-1 and stored in the save buffer 7-1. The save buffer 7-1 is a specific area provided within the memory 7. In this area, the y-coordinate address and 1947 minutes of image data (data between the base '!$ line and the cursor) are stored. In the embodiment of the present invention, the reference line defines the leftmost vertical side of the display screen, so the data stored in the save buffer 7-1 is between the point (0, yO) and the point (xO, yO). ) is the data in the row between. Figure 5 is a diagram that proves the relationship between the movement of the cursor and the movement of data.
Diagram (at), y coordinate yO, point (0, yO) and point (x
Data between 0 and y O) is stored. Figure 5 (C
) are the points (0, yO) and (xo, yO).
Indicates the area where data between is stored. When the process S2 is completed, the display image stored in the save buffer, that is, the point (0,
yO) to the point (xO, yO) is executed.

On the other hand, when the cursor moves upward, i.e. yl-yO
When the result of is negative, the above-mentioned save buffer 7
A process S4 is executed to move the data corresponding to the y coordinate yO stored in -1 to the image memory 5-1.

Fig. 5 (bl is a diagram showing the state when the cursor moves upward, and the data between the point (0, yO) and the point (xo, yO) in the shaded area in Fig. 5 (C). Only the data is stored in the image memory 5-1. Note that the point (xo
, yO) is not stored in the image memory 5-1. Then, the above-mentioned process 33. When the execution of S4 ends, the interrupt processing ends.

The above-mentioned interrupt processing is executed by moving in units of one line in the y direction, so by sequentially moving the cursor, a target area can be cut out or erased. still,
A CRT controller 5-2 is connected to the image memory 5-1, and the CRT controller operates so as to always display the contents of the image memory 5-1 on the display device 11. You can operate it while viewing the image.

The present invention has been described above in detail using the embodiments of the present invention, but in order to further clarify the operation of the present invention, a detailed explanation will be given using an actual cutting operation.

For example, as shown in FIG. 6, a case will be described in which a house in a landscape image is cut out and other images are deleted.

When the embodiment of the present invention starts operating, a reference line SL is displayed at the left end, a cursor MC is displayed at the upper right corner, and the system waits for the cursor MC to move. Then, when the cursor MC is moved from the point ■ to the point ■, it is moved downward, so that the area between the straight line between the points ■ and the point 0 and the reference line SL, that is, the entire displayed image is erased.

As mentioned above, the displayed image is erased at this time, but the displayed image is stored in the save buffer 7-1. Next, move the cursor MC to point ■. Since there is no movement in the y direction from point ■ to point ■, nothing appears on the displayed image.

When moving from point ■ to point ■, the area between the straight line between point ■ and point 0 and the reference '1aSL is displayed.

Although it is not shown in the figure, the cursor M between point ■ and point 0
When a display image exists there due to the movement of C,
The image will be displayed. Next, move the cursor MC from point ■ to point ■. At this time, as with the movement from point 2 to point 2, there is no change in the image data because the movement is not in the y direction. Next, move from point ■ to point ■. At this time, although the movement is upward, the area to the left of the straight line between point ■ and point 0, that is, the area between the straight line between point ■ and point 0 and the reference line, is from the save buffer 7-1 to 1. The data is sequentially stored in the image memory 5-1 and displayed line by line.

Following the movement from point ■ to point ■ (no change in display), the image line on the left side is sequentially displayed as the cursor moves in the same way as from point ■ to point ■. FIG. 9 shows an image displayed when the cursor is moved to point ■. Since the point ■ is the highest point of the house, the image of the area on the left side from the highest position to the lowest position of this house remains. Next, move the cursor MC from point ■ to point ■, and the chimney of the house will be erased.

FIG. 1O is a display image when the cursor MC is at the position of the point ■. As mentioned above, this erasure is done in the display image, and since the area between the cursor MC and the reference line is saved in the save buffer, the chimney will be regenerated in subsequent operations. That is, by moving the cursor from point ■ to point [phase] to point ■, the area between the straight line from point ■ to point [phase] and the reference line is reproduced.

That is, a straight line to the left of the house is displayed as shown in FIG. However, the triangular area between the roof of the house and the chimney is erased. Then, by further moving the cursor MC from point 0 to point ■, the scenery on the left side of the house is erased, and in other words, the background of the house is erased if only the house is cut out. In addition, point■
When a display straight line, that is, a background exists between the straight line between 0 and the reference value SL, it is necessary to move to the point ■ and the point ■ after the point [phase].

Through the operations described above, the embodiment of the present invention repeats erasing and reproducing on a line-by-line basis. FIG. 12 shows the straight line after the processing is completed. As described above, in the embodiment of the present invention, a desired image can be cut out or deleted by moving the cursor.

In the above-mentioned operation, the cursor is moved one after another, and as the cursor is moved, erasing and reproducing operations are performed line by line. By pressing the button the coordinates of the start point are input, and by pressing the button a second time the coordinates of the end point are input, and the image between the straight line from the start point to the end point and the reference line is moved from the start point to the end point. A similar cropped image can be obtained by erasing or reproducing along a straight line obtained in units of one line (horizontal) in the direction of movement. Note that at this time, there is no need to input movement only in the lateral direction, making the operation even simpler.

〔Effect of the invention〕

As described above, according to the present invention, a straight line area perpendicular to a reference axis and a position that has been traveled many times in a display image is specified as a specific area. It is possible to obtain an area indicating device that indicates the area of .

[Brief explanation of drawings]

FIG. 1 is a block diagram of the present invention, FIG. 2 is a circuit configuration diagram of an embodiment of the present invention, FIG. 3 is a detailed explanatory diagram of the embodiment of the present invention, and FIG. 4 is an operational flowchart of interrupt processing. Figures 5 (b) and (C) are diagrams explaining the relationship between cursor movement and data movement, Figure 6 is a diagram explaining the original image before cropping, and Figure 7 is at the start of processing. Figure 8 is a diagram explaining the image, Figure 8 is a diagram explaining the movement of the cursor, Figures 9 to 11 are diagrams explaining the image when the cursor is in the middle of movement, and Figure 12 is the diagram explaining the image at the end of processing. It is a diagram. 1... Instruction means, 2... Area instruction means. Patent Applicant: Casio Computer Co., Ltd. Figure 1: Big Blue on Ice in September, y+ Lotte Appetizer Mouthpiece 2 Figure y'7, length 3g, lower Fucona Art, Figure 4: Power - TsuIL/1 Sugizu 5 Hide-7 9zu 17-,, Ma section ε explanation q Official map Figure 5 1 Go τpP Yu Figure 7 Sword - Power is a moving violet figure Figure 8 Naan)
Figure 9

Claims (3)

[Claims] (1) An instruction means for indicating the position of the display image, and a straight line area that is perpendicular to the reference axis and passes through the position indicated by the instruction means, and between the reference axis and the position indicated by the instruction means. An area specifying device comprising: area specifying means for specifying an area. (2) Claim 1, wherein the area indicating means includes movement detecting means for detecting that the position indicated by the indicating means has moved in the positive or negative direction of the reference axis. Area indicating device as described. (3) Based on the detection result of the movement detection means, the area designation means displays the display image of the specific area when the movement is in the positive direction, and deletes the display image of the specific area when the movement is in the negative direction. An area indicating device according to claim 2.