KR940008485B1 - Special video signal effects processing apparatus - Google Patents

Abstract

The device consists of an input port (60) for inputting an image signal, an ouput port (60) for outputting an image signal, a special effect processing part (30) for correcting the outline of an image signal to output the image signal to the output port, an window generating part (20) for generating window signals to indicate a part of a screen, and the first transmitter (10) for controlling a path to give, to the output port or the outline correcting part, an image signal inputted through the input port by the window signal.

Description

Video signal special effect processing device

1 is a block diagram showing a preferred embodiment of the special effect processing apparatus according to the present invention.

2 is a block diagram showing a specific embodiment of the special effect processing unit shown in FIG.

3 is a waveform diagram showing a window signal generated by the window generator shown in FIG.

4 shows the results of processing by the device shown in FIG.

* Explanation of symbols for the main parts of the drawings

10: first transmission unit 20: window generating unit

30: special effect processing unit 40: system control unit

50: special effect setting unit 50: recording / playback unit

The present invention relates to an image signal processing apparatus, and more particularly, to an apparatus for giving a special effect such as focus out and emphasis to a portion of a screen.

Among the photographing techniques, there is a technique of emphasizing the subject by focusing out the surrounding background other than the subject. In the camera, the lens can be opened with the maximum aperture and the depth of field as shallow as possible to obtain a focus-out effect. This focus out effect requires a high level of skill and skill because manual shooting is required. Therefore, in the case of the beginners who take most of the photographs depending on the automatic shooting, it is not easy to produce the focus-out effect. To compensate for this, the camera manufacturer provides a lens for special effects.

The user can easily achieve the focus-out effect by simply attaching the special effect lens used in the manufacturer in front of the lens. However, the lens for special effects should be stored in a container separate from the camera and carried with each other. The lens for each special effect must be carried out, and the lens must be equipped with various special lenses corresponding to each special effect in order to obtain various special effects. There was a problem.

Accordingly, an object of the present invention is to provide a special effect processing apparatus which is generated to solve the above problems and gives and outputs various special effects to an input video signal.

In order to achieve the above object, the special effect processing apparatus according to the present invention comprises: an input terminal for inputting a video signal; Output terminal for outputting video signal: Special effect processing unit for contour-compensating the video signal input thereto and outputting it to the output terminal: Window generating unit for generating a window signal specifying a certain portion on the screen: Window generated by the window generating unit It characterized in that it comprises a transmission unit for controlling the path so that the video signal introduced through the input terminal by the signal is provided to the output terminal or contour correction. Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing an embodiment of a special effect processing apparatus according to the present invention. In Fig. 1, reference numeral 5 denotes an input terminal for introducing a video signal, 10 denotes a first transmission unit, 20 denotes a window generating unit, 30 denotes a special effect processing unit, 60 denotes a recording / reproducing unit, and 40 Is the system control unit. 50 is a special effect setting unit for setting one of various special effects in the special effect processing unit.

The apparatus shown in FIG. 1 extracts an image signal of an area set through the window generating unit, gives a special effect through the special effect processing unit, and synthesizes the original image signal.

2 is a block diagram showing the detailed configuration of the special effect generating unit shown in FIG. In FIG. 2, reference numerals 32 to 34 denote special effect processors which generate inherent special effects, and 31 denote image signals provided by the first transfer unit 10 shown in FIG. It is a second delivery unit provided to the special effect processor set by the special effect setting unit 50.

3 is a waveform diagram showing a window signal in the form of a binary pulse generated by the window generator 20 shown in FIG. 1 and showing a case in which the window is circular. In Fig. 3, (A) to (G) show window signals for the a-th to g-th horizontal scan lines on the upper side.

The operation of the apparatus shown in FIG. 1 will be described in detail with reference to FIGS. 2 and 3. The special effect setting unit 50 receives a window selection information for setting a window of a desired type and a special effect setting information for setting a desired effect among various special effects as a part for inputting a command controlled by a user.

The system control unit 40 controls the window generating unit 20 and the special effect processing unit 30 according to the window selection information and the special effect setting information input through the special effect setting unit 50. The shape of the window generated by the window generator 20 may include a rectangle, a lozenge, and the like, as shown in FIG. 3, which may be a designer's option.

The window signal generated by the window generator 20 is provided to the first transfer unit 10. The first transmitter 10 is controlled by the window signal and outputs an image signal input thereto to the recording / reproducing unit 60 or the special effect processing unit 30. That is, when the window signal is high logic, the input video signal is output to the recording / reproducing unit 60, and conversely, when the window signal is low logic, it is output to the special effect processing unit 30.

Here, the first transfer unit 10 may be configured as a conventional multiplexer.

The special effect processing unit 30 adds the special effect set by the special effect setting unit 60 to the signal provided from the first transfer unit 10 and outputs it to the recording / reproducing unit 60. In more detail with reference to FIG. 2, the image signal provided from the first transfer unit 10 is provided to one of the special effect processors 32, 33, and 34 through the second transfer unit 31 to process the special effect. After that, it is output to the recording / reproducing section 60. The second transfer unit 31 is controlled by the system controller 40 to output the image signal provided from the first transfer unit 10 to the special effect processor set in the special effect setting unit 50. The second transfer unit 31 may be configured as a multiplexer like the first transfer unit 10.

Therefore, the special effect set by the special effect setting unit 50 is added to the image signal in the area set by the window generator 20. The special effects processor may be a contour corrector, a low pass filter, a gain amplifier, or the like.

The contour compensator emphasizes high frequency components of an image signal, as is well known. In particular, the contour compensator adds an emphasis signal to the boundary of the contour. When the signal of the area designated by the window generator 20 is passed through the contour compensator, the contour is emphasized as compared to the signal of the designated area, thereby achieving an effect of focusing out the surrounding background.

In the case of using the area pass filter, the signal of the area designated by the window generator 20 is lowered in vividness compared to the signal outside the designated area, thereby achieving the same effect as focusing the subject out.

In the case of using the gain amplifier, the luminance or chromaticity of the area designated by the window can be emphasized rather than the surroundings.

The recording / reproducing unit 60 performs an operation such as recording or outputting the video signal subjected to the special effects under the control of the system controller 40 to the recording medium in the system or to the outside.

4 is a screen showing a result of contour correction among various special effect processed images. In FIG. 4, the image of the circular part in the center is the part which is sharpened by the contour correction, and the surrounding hatched part is the part which is not clearer than the center part. As a result, the same effect as when the surrounding hatched portion is out of focus is obtained.

Here, the central portion is set by the window generating unit 20 and the contour correction processing is processed through the special effect processing unit 30. It depends on selecting the type of window generated by the window generating unit 20, the type of the special effect processing is determined by the special effect setting unit 50.

As described above, the special effect processing apparatus according to the present invention does not need to perform special effect processing using a special effect lens, but processes it in a circuit, thereby eliminating the need for a separate special effect lens.

In addition, since various special effects can be included according to design specifications, there is an advantage that it is not necessary to provide various special effects lenses.

In addition, since the type of the window and the type of the special effects can be selected, it is possible to give an arbitrary special effect to any part of the screen.

Claims (7)

An input terminal for inputting a video signal in the video processing system; An output terminal for outputting a video signal; A special effect processing unit for contour-compensating the image signal input thereto and outputting it to the output terminal; A window generator for generating a window signal for designating a certain portion on the screen; And a first transfer unit configured to control a path such that an image signal introduced through the input terminal is provided to the output terminal or the contour correction unit by the window signal generated by the window generator. The apparatus of claim 1, wherein the special effect processing unit includes a plurality of special effect processors for performing unique special effect processing and a second transfer unit for providing a signal provided from the first transfer unit to one of the plurality of special effect processors. And a special effect setting unit for generating setting information for setting the plurality of special effect processors. 3. The special effect processing apparatus according to claim 2, wherein the first and second transfer units are multiplexers. The special effect processing apparatus according to claim 2, wherein the special effect processor is a contour corrector. The special effect processing apparatus according to claim 1, wherein the output of the window setting unit is a binary pulse signal. The special effect processing apparatus according to claim 2, wherein the special effect processor is a low pass filter. 3. The special effect processing apparatus according to claim 2, wherein the special effect processor is a gain amplifier.