SU112081A1 - Combined shooting method and screen to perform this method - Google Patents

Description

The existing methods of combined shooting with the following combination of separately taken images of the game scene and an arbitrary background are complex, they do not allow to immediately receive a negative image of the game scene against a dense background; require a special screen that reflects or transmits only the light of the yellow line of sodium; they require solving the problem of screen illumination by sources of light illuminating the game scene; require more power consumption when renting a game scene, and the invented method of the same purpose does not have the indicated disadvantages. It allows you to simplify the subsequent combination of the game scene and the background and allows you to get a negative image of the game scene on a dense background.

The essence of the described method is that the shooting of a game scene illuminated by filtered light is performed in front of the screen, illuminated not only by infrared or violet rays acting on a mask

film, but also visible rays acting only on the film of the playing scene. With this method, the screen can be illuminated with light sources that simultaneously emit both used areas of the spectrum, for example, visible and infrared.

Excessive illumination in one of the zones is eliminated by filters installed on some of the light sources.

The invented method provides another variant of the lighting scheme. In this case, the scene is illuminated with light, excluding the spectral portion of the sodium line, and the screen with all light, including the spectral portion of the sodium line.

When shooting using the acquired method, a conventional white reflective or translucent screen is used.

In the latter case, the screen is made in the form of a translucent matted layer, behind which a wall is placed with lighting devices emitting light from both zones of the spectrum used. Between lighting fixtures.

the radiation of which acts on the foil of the film, the devices are located, the radiation of which acts only on one film.

FIG. 1 shows the location of the lighting. White circles mean half-watt lamps without filters, emitting visible and infrared rays, and black - lamps, closed infrared.

When shooting a game scene, the screen is set vertically, since the game scene and the screen are illuminated with the light of the same spectral composition.

FIG. 2 shows such a concave screen, particularly suitable for shooting widescreen combined frames.

Subject invention

Claims (2)

1. The method of combined shooting, followed by combining with Masks of separately removed and developed blanks of the game scene and an arbitrary background, characterized in that, in order to simplify the subsequent combination of images of the game scene and background, shooting of the game scene illuminated by light is conducted in front of the screen lit by visible and invisible (infrared or ultraviolet) rays of the spectrum, the visible part of which affects the film of the playing scene, and the invisible part on the mask film. 2. A screen for carrying out the method according to claim 1, made in the form of a semi-transparent matted layer, characterized in that between those set behind the matted a layer of lighting devices, the radiation of which acts on both films, placed devices, the radiation of which acts only on one film.