JPH01223891A - Video information processor - Google Patents

Abstract

PURPOSE:To attain so-called 'overwrite' by superimposing a video image filed on a hard disk or the like such as necklace, spectacles or hair style onto a portrait inputted from a camera. CONSTITUTION:A picture of a commodity placed on a single color background having been stored on a hard disk 17 is loaded to a 2nd memory 12 and the size of picture and its position are changed by changing the start position of an address generated from an addresser 5 and data thinning at the transfer of the picture data signal to a 3rd memory 11. Data at the position of a marker from a marker circuit 16 among output data in the 3rd memory 11 is inputted in a key generator 8 and stored. The key generator 8 compares the stored R, G, B with the output picture signal from the 3rd memory 11 and when they are coincident, a key signal (replacing pulse) 41 is outputted. Thus, the still picture image is superimposed on the moving picture image.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a two-image processing device, and particularly to a device that combines and outputs an NTSC video signal with an image signal already stored in an external memory such as a hard disk. .

[Conventional technology]

Conventionally, as this type of technology, there is a line chroma system.

[Problem to be solved by the invention]

The conventional line chroma system described above does not have a still image input section from an external memory such as a node disk, and
Since it does not have memory for still image processing, it is possible to reduce still image video to an arbitrary size.

The drawback is that it is not possible to perform positioning and superimpose two images on a moving image.

The object of the present invention is to eliminate the above-mentioned drawbacks and to convert still images into
The purpose of the present invention is to provide a video information processor capable of reducing or positioning a video to an arbitrary size and superimposing it on a moving image.

[Failure to solve the problem]

According to the present invention, an analog converter 1 converts a television video signal into R, G, and B analog signals, and converts the R, G, and B analog signals into R, G, and B analog signals, respectively.
and B into digital signals (!: , R, G output from the -analog digital converter).

and a first memory 3 that stores R, G, and B digital signals, and a first memory 3 that multiplies the R, G, and B digital signals output from the first memory by a coefficient k (O≦k≦1). multiplier 6 and external memory 17. R, G regarding still image signals.

and a second memory 12 for reading and storing digital signals of R and B, and R and G regarding the still image signals.

and a third memory 11 that adjusts the size and position and stores the digital signals of B when writing them using the addresser 5.
, a second multiplier 10 that multiplies the R, G, and B digital signals output from the third memory by a coefficient (1-k), and the signals output from the first and second multipliers. DaR
, G, and B digital signals mutually.
and a digital-to-analog converter 9 that converts the R, G, and B digital signals output from the adder into R, G, and B analog signals, and further includes:

The R, G, and B digital signals output from the first memory are combined with the R, G, and B digital signals output from the third memory.
a key generator 8 that generates a key signal indicating a time point to switch to the digital signal of and B, and supplies it to the first and second multipliers to change the coefficients of the first and second multipliers; R, G, outputted from the third memory to the key generator,
and a marker circuit 16 for generating a timing pulse for holding a signal at an arbitrary position of the digital signal B.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

Referring to FIG. 1, a video signal 19 passes through an analog decoder 1 to pR, G, B component signals 20, 21.
．． 22, and further converted into R, G, and B digital signals 23, 24 by the analog/digital converter 2.
．． and 25 and stored in the first memory 3.

On the other hand, . . . loads an image of a product placed in a place where the background color is a single color, for example, blue, which was stored in the hard disk 17, into the second memory 12. When transferring the image data signal from the second memory 12 to the third memory 11.

By thinning out the data and changing the start position of the address generated by the addresser 5, the size and position of the 92 images can be changed. Among the output data of the third memory 11, the marker position data from the marker circuit 16 is input to the key generator 8 and stored. The key generator 8 compares the stored R, G, and B values with the output image signal from the third memory 11, and outputs a key signal (pass change pulse) 41 when they match. According to this key signal 41, the image data 26 from the first memory 3,
27.28 and the output image data 43, 44.45 from the third memory 11 are each multiplied by 1-k (o≦k≦1) by a 2 multiplier 6°10, and then an adder 7
I) Combine the two screens.

At this time, so that the image data of the two cars is cross-faded,
Change the coefficient k. This situation is shown in FIG.

In FIG. 1, 4 is a horizontal and vertical synchronizing signal separation circuit, and 18 is a controller used for controlling the marker circuit 16 to specify the position of a marker.

〔Effect of the invention〕

As described above, the present invention has the effect of allowing so-called "change of clothes" by superimposing the image 1, such as a necklace, glasses, hairstyle, etc., stored on a hard disk or the like on the person input from the camera.

[Brief explanation of the drawing]

- FIG. 1 is a block diagram of a video information processor according to an embodiment of the present invention, and FIG. 2 is a diagram showing the operation of FIG. 1. 1. Analog decoder, 2. Analog-digital converter, 3-. First memory, 4. Horizontal and vertical synchronization signal separation circuit, 5. Addresser, 6. First multiplier, 7..・Adder, 8...Key generator, 9 digital・
Analog converter, 10. second multiplier, 11.. third memory, 12.. second memory. 13...CPU, 17.Hard disk, 18.
·controller.

Claims (1)

[Claims] 1. An analog decoder (1) that converts a television video signal into R, G, and B analog signals, and the R, G
, and B analog signals to R, G, and B digital signals, respectively (
2), a first memory (3) that stores the R, G, and B digital signals output from the analog-to-digital converter; and a first memory (3) that stores the R, G, and B digital signals output from the first memory. A first multiplier (6) that multiplies the digital signal by a coefficient k (0≦k≦1), and an external memory (17).
), R, G, and B regarding the still image signal are stored in
A second memory (1
2), a third memory (11) that adjusts the size and position and stores the R, G, and B digital signals related to the still image signal when written by the addresser (5);
a second multiplier (1-k) that multiplies the R, G, and B digital signals output from the third memory;
10) and R output from the first and second multipliers.
, G, and B digital signals (
7) and a digital-to-analog converter (9) that converts the R, G, and B digital signals output from the adder into R, G, and B analog signals, and further includes:
The R, G, and B digital signals output from the first memory are converted into the R, G, and B digital signals output from the third memory.
and a key generator (8) that generates a key signal indicating the point of time to switch to the digital signal of B and supplies it to the first and second multipliers to change the coefficients of the first and second multipliers;
R output from the third memory to the key generator;
A marker circuit (16
) A video information processor comprising: