JPS6374265A - Image processor - Google Patents

Abstract

PURPOSE:To superposingly display an external input picture and a picture having optional color and shape by providing a color mask register capable of setting a color freely. CONSTITUTION:A picture memory section I stores a digital picture outputted from a picture input section 1. A picture memory section II stores a picture outputted by a control section 3. A color comparator 6 compares a color of each picture element in the picture stored in the picture memory section II with a color set in the color mask register 5 and outputs the picture stored in the picture memory section II4 to a selector section 7 when they are coincident and outputs the picture stored in the picture memory section I2 in case of noncoincidence. Thus, a picture having an optional color is superimposed onto an NTSC picture.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an image processing device that displays and edits image data on a CRT.

(Prior Art) Conventional image display devices have a function called superimpose, which displays document data created by a character generator or the like superimposed on an input image.

(Problems to be Solved by the Invention) However, in the above technology, the image data to be superimposed on the input image has a fixed color and is difficult to change.

Furthermore, the shape of the image data to be superimposed is also limited.

(Means for Solving the Interval Origin) In order to solve the above-mentioned problems, the present invention provides an image memory section (2) that stores images input from the outside, and an image memory section (II) that stores images generated by the control section. and a color mask register that allows the color to be set freely from the control section, and the color of each pixel of the image stored in the image memory section II and the color stored in the color mask register. By comparing image memory part ■ and image memory part I
One of the images stored in I is selected and displayed.

(Function) The present invention can display an externally input image and an image having an arbitrary color and shape in a superimposed manner by using the above-mentioned technical means.

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

FIG. 1 is a block diagram of an embodiment of an NTSC image display device according to the present invention.

Reference numeral 1 denotes an image input section which digitizes the input NTSC signal and outputs a digital image.

2 is the image memory section! , and stores the digital image output from the image input unit 1.

3 is a control unit which outputs an image or color.

Reference numeral 4 denotes an image memory section (2), which stores the image output by the control section 3.

A color mask register 5 stores the color output by the control section.

6 is a color comparator, which compares the color of each pixel in the image stored in the image memory section 4 with the color set in the color mask register, and indicates whether or not they match. Outputs signal A.

7 is a selector section, which outputs the image stored in the image memory section 4 when they match according to the signal A, and outputs the image stored in the image memory section I2 when they do not match. .

Reference numeral 8 denotes an image display section, which displays the image output by the selector section 7.

The NTSC image display device configured as described above will be explained using images shown in FIGS. 2 and 3 as examples.

FIG. 2 is an explanatory diagram of one image stored in the image memory section (2).

FIG. 3 is an explanatory diagram of one image stored in the image memory section II.

However, in both figures, the portion surrounded by dotted lines corresponds to one pixel.

Assuming that blue is set in the color mask register 5, the image R output from the selector section 7 has blue at the position of the blue pixel in the image Q, and the image P at other positions.
The image will have the specified color.

FIG. 4 shows the output results in the embodiment of the present invention.

Here, image R is shown.

The same can be said of the case where other colors are set in the color mask register 5.

(Effects of the Invention) According to the present invention, the NT
It becomes possible to superimpose the SC image.

It is also possible to display only an arbitrary area of the image P by using the color set in the color mask register 5 as the background color.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of one embodiment of the NTSC image display device according to the present invention, FIG. 2 is an explanatory diagram of one image stored in the image memory section II, and FIG. 3 is an explanatory diagram of one image stored in the image memory section II. An explanatory diagram of the image, FIG. 4, is an output result in an embodiment of the present invention. 1...Image input section, 2...Image memory section■, 3.
...Control unit, 4...Image memory unit■, 5...
- Color mask register, 6...Color comparator. 7... Selector section, 8... Image display section. Patent applicant: Matsushita Electric Industrial Co., Ltd. Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] an image input section that inputs an image signal, an image memory section I that stores image A that is the output of the image input section, and a control section that outputs image B generated in advance and color C that is a comparison target; an image memory section II that stores the image B that is the output of the control section; a color mask register that stores the color C that is the output of the control section; and a color mask register that stores the color C that is the output of the control section; Read image B and read image B.
a color comparator that compares the color of each pixel with the color C and outputs a signal D indicating whether the color matches or does not match; the image A stored in the image memory section I and the color C stored in the image memory section II; a selector unit that reads each of the images B and outputs either the image A or the image B by using the signal D; and displays the image A or the image B that is the output of the selector unit. An image processing device comprising an image display section.