JPS626587A - Graphic data forming device - Google Patents

Abstract

PURPOSE:To automatically form a photographic form by converting the colors of respective picture elements into a representative color, making the converted respective picture elements correspond to a designated color, converting the number of the designated color of respective unit blocks so as to be within the determined number of colors, and dividing the picture elements into a graphic color and a background color by making corners of a display screen a reference. CONSTITUTION:The picture 1 of a base of a photographic form is fetched to a field memory 3 by a television camera 2. The contents of a field memory 3 are freely read by a command from a picture processor 5, rewritten by the data from the picture processor 5 and monitored by a monitor 4 at any time. The contents of the field memory 3 are accommodated in the buffer memory 51 of the processor 5 and herein converted into the graphic data by a program included in a CPU 52. The color of respective picture elements is converted to a representative color and converted to a designated color corresponding to the photographic form. Respective unit blocks are gathered by the designated number of colors. Then, the blocks are divided into a graphic color and a back ground color.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention provides a method for displaying images using pixel data (pattern data) that is transmitted by defining an area over the entire display area or a part of the display area in teletext broadcasting and captain systems. The present invention relates to a figure data creation device that automatically creates photographic figures.

(Prior Art) A photographic figure used in teletext broadcasting and the captain system is defined as 192 pixels in the vertical direction and 248 pixels in the horizontal direction.

Then, the pixels are divided into blocks (minimum 4 pixels vertically and 4 pixels horizontally), and the blocks are colored within two colors to display a figure.

Available colors are 8 colors: black, red, green, yellow, blue, magenta, cyan, and white, and 7 colors with reduced brightness of colors outside of black paper, for a total of 15 colors.
It's a color.

The colors within the block are divided into either the figure color or the background color.

Dot information and color information for the graphic color and background color are transmitted separately, and the data is compressed using a run-length code.

Currently, the common method for creating photographic figures is to use a monochrome camera to capture dot information on the figure color and background color, and then have an operator color each dot by matching one of the 15 colors mentioned above. .

(Problems to be Solved by the Invention) Using the method described above, it takes an enormous amount of time to create the photographic figure intended by the operator.

SUMMARY OF THE INVENTION An object of the present invention is to provide a graphic data creation device that can automatically create a photographic graphic by capturing an image that is the basis of a photographic graphic using a television color camera.

(Means for Solving the Problem) In order to achieve the above object, a graphic data creation device according to the present invention includes a television color camera that captures an image as a basis of a photographic figure as a television signal, and Image taken with a color camera 1
It consists of an image processing device that has a field memory that stores the screen, a buffer memory that captures and converts the contents of the field memory, and a control unit that executes an image processing program. A figure data creation device that automatically converts into photographic figure data for broadcasting or a captain system, wherein the control unit causes the field memory to capture an image that is the basis of a photographic figure from the television color camera; The color of each pixel is converted to a representative color, each pixel converted to the representative color is made to correspond to a specified color of a photographic figure of teletext broadcasting or a captain system, and the specified color of each unit block is made to correspond to a specified number of colors. By converting the pixels so that they are within the following range and dividing the pixels into the figure color and the background color by color change based on the corner of the screen, the image that is the basis of the photographic figure is automatically converted into data of the photographic figure. Configured to convert.

(Example) Hereinafter, the present invention will be described in more detail with reference to the drawings and the like.

FIG. 1 is a block diagram showing an embodiment of a photographic figure creation apparatus according to the present invention, and FIG. 2 is a flowchart showing the basic procedure for creating a photographic figure.

An image 1 serving as the basis of a photographic figure is taken into a field memory 3 by a television color camera 2.

The field memory 3 has a storage area corresponding to each pixel of the color television signal, and can convert the output of the television color camera 2 into digital data and store it in each area, and can also convert the stored contents into digital data. It is a large-scale memory with attached circuitry that can output the digital data as data and convert the digital data back to the original television signal.

The contents of the field memory 3 can be freely read out according to commands from the image processing device 5, and can be rewritten with data from the image processing device 5.

The contents of the field memory 3 are monitored by the monitor 4 at any time.

Further, the contents (digital data) of the field memory 3 are stored in the buffer memory 51 of the processing device 5, where:
The image processing procedure shown in FIG. 2 is converted into graphic data by a program included in the CPU 52.

Convert to representative color (tl). Convert to the specified color corresponding to the photographic figure ([1). Round the inside of each unit block to the specified number of colors (=2 colors) (It/).

Furthermore, the images are sorted into figure colors and background colors (V).

Photographic figure data is stored in a dot pattern memory 531, figure color memory 54. The background color is stored in the background color memory 55.

Next, a more specific explanation will be given with reference to a detailed flowchart in FIG.

Start up the entire device by command from the operation console 6 [5TA
RT).

First, a block-by-block mesh is superimposed on the sampled image to determine the position and size of the figure, taking into consideration display information other than figures such as text.

Once the position and size are determined, the image data is actually taken into the field memory 3.

Each of the RGB video signals from the color camera 2 is subjected to 6-bit A/D conversion so that the black level is zero and the 100% white level is full scale.

At this time, in order to reduce the influence of noise, data is captured four times and averaged.

The digital data is sampled at 256 x 256 pixels and stored in the field memory 3 [RGB 6 bits = 4
averaging].

Note that this data can be freely read and written by commands from the console 6, and images on the memory can be monitored on the color monitor 4 at any time.

Next, each RGB data is rounded to 4 bits, and the number of pixels is rounded to 192 x 248 dots (pixels of a photographic figure).

At this point, the image has 16 gradations for each of RGB,
It is expressed using some color out of 4096 colors.

The colors are totaled, and similar colors are rounded down to the color with the largest number of dots to determine the representative color used in the captured image.

Then, convert the contents of field memory 3 to the representative color [
Convert to representative color (■)].

Each of the 15 colors that can be used in photographic shapes (a total of 8 colors: black, red, green, yellow, blue, magenta, cyan, white, and 7 colors with reduced brightness of colors outside of black paper). Select the color closest to the color and change it to that color [Convert to the corresponding specified color].

The designated colors and numbers for photographic figures are as follows.

Black (00), red (01), green (02).

Yellow (03), Blue (04), Magenta (05), Cyan (0
6), white (07), transparent (08) RI red (09), R1
Green (10).

RI yellow (11), RI blue (12) R1 magenta (13), R1 cyan (14).

R1 white (= gray) (15) RI: Reduced Intensity (
(subtractive color) Nearest colors refer to the colors with the shortest distance in the color solid.

Before changing, the correspondence is displayed in a part other than the shape area, the operator confirms it, and if the correspondence is acceptable, it is converted as is, but the operator can change the correspondence as necessary. be able to.

At this point, the figures are only expressed pixel by pixel using photographic colors, and the concepts of blocks (4×4), figure colors, and background colors are not given.

Therefore, there may naturally be blocks that use three or more colors within one block.

Therefore, in reality, if it is necessary to subsequently correct dots, colors, etc., correction work is performed.

Correction work is performed by coloring dots, specifying areas and rounding them to any N colors, changing colors, removing isolated points, and searching for blocks that use three or more colors within the block.

Next, if three or more colors are used in a block, determine the two colors to be used in the block by comprehensively judging from the information of surrounding blocks, and for the remaining colors, choose the appropriate color from among the two colors. [Automatically round to within 2 colors within the block].

Automatic rounding to within two colors within a block is for a total of 9 blocks, including the block in question, 4 blocks on the top, bottom, left, and right that touch the block at the edges, and 4 blocks on the top, left, right, bottom, left, and right that touch at the corners of the block in question. Tally up the colors and select the top 2
Choose a color.

Among the colors forming the block in question, those that match the above two colors are left as they are, and the other colors are set to the color that is closer to the above two colors.

At this point, the figure is expressed in 15 colors of photography, and each block is colored with no more than two colors, and the remaining processing to generate the photographic data is to assign the figure color and background color. .

The following two conditions must be met for the distribution of figure colors and background colors in processing.

First of all, even if you just look at the information about the figure color and background color dots (for example, if you print out the figure color dots as black and the background color dots as white on a black and white video printer), you will not be able to see the original coloring. Sort the shapes so that you can imagine them.

The next condition to be satisfied is to satisfy the first condition and to reduce the amount of data when converting to a run-length code as much as possible.

This distribution of figure colors and background colors is performed in the following steps.

■ Divide the screen (192 x 248) into 4 lines each and temporarily set the color in the upper left corner as the background color.

■Scan each line and change the figure color and background color by changing the color.

For example, in the four lines at the top, the color at the upper left corner is assumed to be the background color, so if the color changes when scanning to the right, it is the figure color, and if the color changes then it is the background color.

■If a 4x4 block is filled with one color, determine the directionality of that color (figure color or background color), and if the block is filled with that color, the directionality will be determined. Decide whether to use the figure color or the background color according to the following.

■For blocks with two colors, the shape colors of the upper left, upper, upper right, and left 4 blocks (blocks that have already been determined),
Check the background color, and if there are more blocks opposite to the block in question than the same blocks as you, it will be reversed.

■ Perform the processes from ■ to ■ on the entire screen.

■For blocks with two colors, check the directionality of each color again and check the directionality of each color (for example, the color that is oriented to the figure color is the background color, and the color that is oriented to the background color is the figure color). , etc.).

If it cannot be determined (such as when both colors are oriented toward the figure color), the background color is the one with the lowest color number (0 to 15).

When this process is completed, the figure satisfies all the conditions required for a photographic figure, and a single sheet of photographic data can be created.

The data created in this way is processed by the image processing device 5.
The data is stored in the dot pattern memory 53, figure color memory 54, and background color memory 55, and is used for transmission or recording.

(Effects of the Invention) As described above in detail, the graphic data creation device according to the present invention can automatically create photographic graphic data with the above configuration.

Therefore, compared to the conventional creation of photographic figures by an operator, photographic figure data can be created in an extremely short time.

Further, since the image data that forms the basis of the photographic figure is captured by a color television camera, the object may be three-dimensional.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of a photographic figure data creation apparatus according to the present invention. FIG. 2 is a flowchart showing the basic procedure for creating photographic figure data. FIG. 3 is a flowchart showing a more detailed procedure for creating photographic figure data. l...Image 2 which is the basis of photographic figures.
...Television color camera 3...Field memory 4...Monitor 5...Image creation device 6...Operation console Patent applicant Nippon Television Broadcasting Network Co., Ltd. Agent Patent attorney Hisashi Inoro Figure 22

Claims (1)

[Scope of Claims] 1) A television color camera that captures an image as a basis of a photographic figure as a television signal, a field memory that stores one screen imaged by the television color camera, and the field memory. It consists of an image processing device that has a buffer memory that captures and converts the contents of the computer, and a control unit that executes an image processing program.The device automatically converts one screen captured from a color television signal into teletext broadcasting or Captain System photographic graphic data. The control unit causes the field memory to capture an image that is the basis of a photographic figure from the television color camera, and converts the color of each pixel into a representative color; Each pixel converted to the representative color is made to correspond to a designated color of a photographic figure of teletext broadcasting or a captain system, and the designated color of each unit block is converted to within a predetermined number of colors, and the pixel is A figure data creation device configured to automatically convert an image that is the basis of the photographic figure into data of a photographic figure by distributing it into a figure color and a background color based on a color change based on a corner of the screen. (2) The graphic data creation device according to claim 1, wherein the block is formed of 4×4 pixels, and the predetermined number of colors of each unit block is 2.