JPH01263781A - Picture processor - Google Patents

Abstract

PURPOSE:To facilitate painting work without affecting a display plane by providing a boundary plane to draw a painting border line with corresponding to a bit map memory one-to-one, and executing an instruction concerning the painting with the input of the border line. CONSTITUTION:A picture processor 2 is equipped with a plotting plane 22 and a boundary plane 23 formed so that a bit map memory 21 may correspond to a display screen one-to-one, composed of a CPU 24 to execute an arithmetic processing, a main memory 25 and a plotting controller 26, and the plotting plane 22 and the boundary plane 23 can be read/written from the CPU 24 or the plotting controller 26. The plotting plane 23 is not displayed on the screen of a display part 3. When the inside of a drawing drawn on the plotting plane 22 of the bit map memory 21 is painted, the same graphic corresponding to the boundary plane 23 is drawn, and the painting area is decided by referring to the graphic.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image processing device, and particularly to a function of filling in open chain regions.

[Conventional technology]

Conventionally, when drawing a figure, when filling in a closed area, a boundary line was first drawn on the display, and the area to be filled was determined by determining whether the area was inside or outside the boundary line.

[Problem to be solved by the invention]

For this reason, it is necessary to give the boundary line as a solid line, and if it is given as a dotted line as shown in FIG. 4, the area will not be closed and it will not be possible to determine whether it is inside or outside.

Moreover, as shown in FIG. 5, a plurality of straight lines 11, 12, i
When filling in a closed region R surrounded by an oval 0 that intersects 3, this closed region R is divided into four closed regions r1°r2 . r3.
Since the area is divided into r4 areas, it is necessary to sequentially perform the above-mentioned judgment on the four closed areas and fill them in sequentially, which makes the operation complicated.

The present invention has been made in view of the above-mentioned circumstances, and it is an object of the present invention to provide an image processing device that facilitates filling-in operations.

[Means for Solving the Problems] Therefore, in the present invention, the bitmap memory that controls the display screen on the display is provided with not only a display plane for drawing but also a boundary plane that draws a border line for filling.
Only instructions regarding filling are given independently of the display plane for drawing.

[Effect]

With the above configuration, the filling instruction can input only the necessary boundary lines to the boundary plane without affecting the display plane in any way, making the filling operation extremely easy.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram of an image input device using an image processing device according to an embodiment of the present invention.

This image input device includes an input section 1 consisting of a geeboard,
An image processing device 2 that performs image processing according to input information from the input unit 1, and a C whose display screen is controlled by the image processing device 2.
The display section 3 is composed of an RT display.

This image processing device 2 includes a bitmap memory 2
1 includes a drawing plane 22 and a boundary plane 23 that are formed in one-to-one correspondence with the display screen, and includes a CPU 24 that performs rendering processing, the above-mentioned "@ device 25, The drawing plane 22 and the boundary plane 23 can be read and written from the CPU 24 or the drawing controller 26.

This boundary plane 23 is not displayed on the display screen of the display unit 3.

Next, the filling operation will be explained.

For example, consider the case where the inside of a circle 01 drawn with a dotted line on the drawing plane 22 of the bitmap memory 21 is filled in, as shown in FIG. 2<a>.

First, as shown in FIG. 2(b), the bitmap memory 2
Draw a circle 02 corresponding to the above-mentioned inner 01 on the boundary plane 23 of No. 1, and decide the area to be filled while referring to the boundary plane.

In this way, the filling of the circle drawn with a dotted line as shown on the display screen in FIG. 2(-C) is completed.

On the other hand, a plurality of straight 4!11.12. as shown in FIG.
When filling in a closed region R surrounded by an ellipse O where 13 intersects, first, as shown in FIG.
3, draw a boundary line corresponding to the ellipse O, and decide the area to be filled while referring to the boundary plane. This closed region R
are four closed regions r1°r2. r3. r4, but since the boundary line of the boundary plane 23 has only one closed area, it is sufficient to perform the above determination for this one closed area. FIG. 3(b) shows a display plane that has been completely filled.

In this way, even when an area divided into a plurality of areas is to be filled in all at once, it is possible to perform the filling with extremely good workability.

〔Effect of the invention〕

As described above, according to the image processing device of the present invention, in addition to the display plane for drawing, the bitmap memory has a boundary plane for drawing a border line for filling in one-to-one correspondence with the display plane. Since we have set up the interface and only give instructions regarding filling independently of the display plane for drawing, when instructing to fill, only the necessary border lines are input into the boundary plane, and the display plane is not affected in any way. This makes the filling work extremely easy.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an image input device according to an embodiment of the present invention, and FIGS. 2(a) to 2(C) show the display plane, boundary plane, and after filling is completed when filling using the same image input device. Figures 3(a) and 3(b) are diagrams showing the boundary plane during other filling operations and the display plane after filling is completed; Figures 4 and 5 are diagrams showing the state of the display plane. is an explanatory diagram of a conventional filling operation. DESCRIPTION OF SYMBOLS 1... Input unit, 2... Image processing device, 3... Display unit, 21... Bitmap memory, 22... Drawing plane, 23... Boundary plane, 24... CPU,
25... Main storage device, 26... Drawing controller. Figure 1 Figure 2 (G) Figure 2 (C) Figure 2 (b) Figure 4 Figure 5

Claims (1)

[Claims] The bitmap memory that controls the display screen on the display has a one-to-one correspondence with the display plane in which the display image is written, and is not displayed on the actual display screen, but in the closed area. An image processing device comprising: a boundary plane in which boundary line information can be written during filling.