JP2563163B2 - Figure instruction method - Google Patents

Description

TECHNICAL FIELD The present invention relates to a graphic pointing method for pointing a part of an image displayed on a display.

[Prior Art] Conventionally, as a method of indicating a part of an image displayed on a display, there is a method called a tracking method. This method follows a figure from a predetermined point of the figure along the dots that make up the figure.

For example, when applied to a figure as shown in FIG. 4 (A), it becomes as follows. That is, in the figure in which the rectangle 12 of the ellipse 11 intersects at the point c, the figure starts to follow the dot to the left from the position indicated by the arrow in the figure,
At point c where the two lines intersect, it is unclear which way to proceed. At this time, in many cases, the figure is traced so as to follow the innermost closed curved surface. That is, the figure shown in FIG. 4 (B) is traced, and a rectangular figure with a part cut off is cut out.

However, in the above operation, when it is desired to specify (cut out) the ellipse 11, there is a problem that the result is different from the original purpose.

[Object of the Invention] The present invention has been made in view of the problems of the above-mentioned conventional example, and provides a figure designating method capable of reliably designating a desired figure among predetermined image data. It is intended.

Embodiment of the Invention FIG. 1 is a block diagram showing an embodiment of the present invention.

The image data input device 1 is composed of a CCD or the like,
A device for converting an original image into an electric signal, for example, for inputting image data of an ellipse 11, a rectangle 12, a triangle 13, etc. shown in FIG.

The coordinate value input device 2 is a device for inputting a plurality of coordinate values, and is composed of a mouse, a light pen, or the like. A state in which a plurality of coordinate values are input by the coordinate value input device 2 is plotted by a dotted line 14 in FIG.

The display device 3 displays the data input by the image data input device 1 and the coordinate value input device 2, and is configured by a CRT or the like.

When the comparison device 4 brings the input coordinate values closer to the center of a closed loop formed by a plurality of coordinates input by the coordinate value input device 2, the approaching coordinate values are input to the input image. It is to detect whether or not the data matches. The holding device 5 is a device that holds the data when the comparing device 4 matches the two data.

FIG. 2 is a diagram showing an example in which the data input by the image data input device 1 and the data input by the coordinate value input device 2 are displayed on the display device 3 in the above embodiment. .

That is, in the above embodiment, a step of displaying the image data on the display screen of the display device 3, a step of storing a plurality of coordinate values input from the coordinate value input device 2 in the storage means, and a step of storing the plurality of coordinate values. The image data surrounded by the formed closed loop is compared with the plurality of coordinate values by the comparison device 4, and the image data surrounded by the closed loop is held by the holding device 5 according to the comparison result. And a figure designating method having steps. In the image data holding step, a step of bringing the coordinate values closer to substantially the center of the closed loop formed by the plurality of coordinate values and a step of bringing the coordinate values closer to the center are the image data. And a step of holding the above coordinate values when they match.

 Next, the operation of the above embodiment will be described.

FIG. 3 is a flow chart showing the operation of the above embodiment.

First, a graphic image written on paper or the like is converted into an electric signal by a CCD, an A / D conversion circuit or the like in the image input device 1 (S1). This electric signal is expressed by "1" and "0",
It is displayed on the display device 3 as a collection of dots based on these. That is, in FIG. 2, an ellipse 11 and a rectangle
12 and triangle 13 are displayed.

Then, a plurality of coordinate values are input by the coordinate value input device 2 such as a mouse (S2). In this case, the mouse is operated so as to go around the outside of the figure (ellipse 11 in the case of FIG. 2) desired to be indicated. In this case, a large number of designated coordinate values are obtained, which are the plurality of coordinate values.

Based on the multiple coordinate values input by S2 above,
A closed loop is formed, and the central coordinate value of this closed loop is obtained (S3). When the center coordinate value is obtained, for example, it is obtained by calculating 1/2 of the sum of the maximum value and the minimum value of the coordinates in the main scanning direction and the sub scanning direction of the input coordinate values. May be. In FIG. 2, the central coordinate value is indicated by reference numeral 15.

Next, each input coordinate value is gradually brought closer to the incoming coordinate (S4). Then, during the approach, it is determined whether or not the approaching coordinate value matches the image data (S5). If they match, the held coordinate values are held in the holding device 5. Then, another coordinate value is gradually brought closer to the central coordinate value, and the data is held in the holding device 5 at the coincident point. By repeating this operation, all the coordinate values input in S2 are matched with the image data. Then, these coincident coordinate values are made continuous (S6).

As described above, since a plurality of coordinate values are entered with the mouse so as to make one round around the outside of the target figure (the figure to be cut out), a plurality of coordinate value comrades are continuous,
In this case, there is no need to perform an operation of making the coordinate values continuous. However, as will be described later, a non-target figure (a figure other than the figure to be cut out) may be surrounded by a plurality of coordinate values, and in this case, it is necessary to make the coordinate values be continuous. Moreover, even if a plurality of coordinate values are input with the mouse, it is assumed that the plurality of coordinate values are not continuous with each other, but the value of the designated coordinate held by this is also not continuous. In this case, In this type of device, a method of linearly connecting input coordinates is usually adopted, and a designated coordinate sequence is formed by this method.

Then, the image data instructed in this way is taken out (S7).

If the input coordinate value does not match the image data (black bit of the image) while approaching the central coordinate value, the approaching coordinate value is invalidated.

In the continuous work of coordinate values (S6), it is necessary not to cut out the non-target figure. To do this, do the following (note that the non-target figure is separated from the target figure). Suppose). That is, in the process of approaching a plurality of coordinate values toward the center, the coordinate values approaching toward the center coincide with the non-target figure at the point α, and then
It is assumed that the coordinate values approaching toward the center coincide with the target figure at the point β. In this case, if both the points α and β are part of the target figure, the points α and β are continuous,
Since the point α is a part of the non-target figure and the point β is a part of the target figure, the point α and the point β are not continuous, and the coordinates of the point α (instruction coordinates) and the coordinates of the point β (indication are (Coordinates), and white bits (data other than image data) increase in the meantime.
In this case, the coordinates of the point α are invalidated, that is, the holding device 5 does not hold the coordinates of the point α. By doing so, it is possible to reliably cut out only the target graphic without cutting out the non-target graphic.

The continuous shape of the coordinate values that match as above is
The image data will be the same as the image data that was originally requested.

That is, it is possible to reliably instruct (recognize) a graphic that is in line with the operator's intention. In addition, the recognition speed of the figure is faster than the tracking method shown in the conventional example. Furthermore, in the above embodiment, even if the figure is composed of complicated image data, the desired shape can be surely designated (recognized).

The figure shown in FIG. 2 is an example, and it goes without saying that the figure can be designated for other figures.

[Effects of the Invention] According to the present invention, it is possible to reliably instruct a desired figure in predetermined image data.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention. FIG. 2 is a display screen for explaining the operation in the above embodiment. FIG. 3 is a flow chart showing the operation of the above embodiment. FIG. 4 is an explanatory diagram of a tracking method which is a conventional example. 1 ... Image data input device, 3 ... Display device, 4 ... Comparison device.

Claims (2)

(57) [Claims] 1. A step of displaying image data formed by dots on a display screen of a predetermined display means; an input step of inputting a plurality of coordinate values forming a closed loop from an input means; A storage step of storing the coordinate values in a storage means; a proximity step of bringing the coordinate values close to each other near the center of the closed loop; a dot whose coordinate values are made close to each other to form the image data A holding step of holding the coordinate values when they match with each other; a proximity step of all the input coordinate values,
A repeating step of repeating the holding step; and recognizing the held coordinate value as instructed image data after all the coordinate values approaching toward the center coincide with the dots forming the image data. A graphic designating method, comprising: a recognizing step; and a continuous step in which the coordinate values forming the recognized image data are continuous with each other. 2. The recognizing step according to claim 1, wherein the step of determining whether the held coordinate values are continuous and the continuous coordinate values are recognized as instructed image data. A graphic designating method comprising: