Circular curtain camera system

A technology of camera system and ring screen, which is applied in the field of camera and can solve problems such as difficulty in fusion

Inactive Publication Date: 2007-08-22
乔楠
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the above-mentioned prior art can realize the shooting and projection of ring-screen images, since each individual camera p

Method used

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  • Circular curtain camera system
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Examples

Experimental program
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Embodiment 2

[0075] In general, since the screens of most ring-screen theaters are vertical, a vertical image is naturally needed to match it, so it is necessary to shoot a ring-screen image horizontally; therefore, in the embodiment shown in Figure 1, the camera Shooting vertically upwards, the shooting angle of the virtual image formed by the conical mirror is horizontal. In the foregoing description of the embodiment in FIG. 1 , it is also pointed out that the entire system shown in FIG. 1 can be rotated at a certain angle for shooting, so as to meet the need for oblique shooting in some special cases.

[0076] Embodiment 2 proposes another implementation scheme that meets the needs of special shooting angles of view. The main difference between it and the embodiment shown in FIG. If the shooting direction is parallel to the central axis of the conical mirror, but the shooting direction has a certain inclination angle, the virtual image obtained by the conical mirror is not horizontal, ...

Embodiment 3

[0079] The conical mirror in the embodiment shown in Figure 1 is a positive conical mirror, and the cone angle is 90 degrees, and the conical reflector surface forms an angle of 45 degrees with the horizontal plane. The vertical viewing angle of the camera and the mirror size of the conical mirror. However, it is easy to know that the cone angle can be changed, but different angle changes will lead to different effects, and those skilled in the art can choose and apply according to needs. The following is a detailed description through the comparison of Fig. 10a, Fig. 10b, and Fig. 10c. For the convenience of comparison, the horizontal shooting of the virtual image is guaranteed in Fig. 10a, Fig. 10b and Fig. 10c.

[0080] In Fig. 10a, the conical mirror surface forms an angle of 60 degrees with the horizontal plane, that is, the cone angle is 60 degrees. In order to realize horizontal shooting, the shooting direction of the camera is adjusted and rotated to the right by a ce...

Embodiment 4

[0085] Through the introduction of Embodiment 3, it can be known that the cone angle of the conical reflector can be changed. The conical reflector of the embodiment shown in Figure 1 is a positive conical mirror, that is, the angles formed by the conical reflector surface and the horizontal plane in all directions are the same, and the cross section of the conical reflector is a circle. The biggest difference between Embodiment 4 and the embodiment shown in Figure 1 is that the angles formed by the conical mirror surface and the horizontal plane in each direction are not completely consistent, for example, the angles are changed between 30-60 degrees. , or vary between 42-48 degrees, that is, the cross-section in Example 4 is not a regular circle.

[0086] Since the cross-section in Embodiment 4 is not a regular circle, it is possible that the angles of the conical mirrors faced by each camera are different. From the introduction of Embodiment 3, it can be known that the cone...

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Abstract

The invention provides a circular-screen camera system, comprising: conical reflector having continuous mirror surface and placed upside-down on a column; multiple cameras, distributed on the side surfaces of the column according to their camera views which are overlapped mutually; the cameras shoot up; each camera is located on the central axis of the conical reflector through the virtual image formed by the conical reflector. And it creatively uses the conical reflector in the circular-screen camera system to make image collection, able to make the pictures collected by the adjacent cameras have certain overlapped regions, thus able to assure being able to make fusion treatment on adjacent images by computer so as to form a circular-screen panoramic picture.

Description

technical field [0001] The camera field of the present invention, in particular, relates to a ring screen camera system. Background technique [0002] A ring screen movie refers to a movie in which the captured scene images within a 360-degree range in the horizontal direction are projected on a ring screen, so that the audience in the screen circle can get a strong sense of presence. According to the number of cameras (or projectors) used, it can be divided into two categories: single-camera surround-screen movies and multi-camera surround-screen movies. At present, the widely used in the world is a ring-screen camera composed of 9 35mm cameras, which shoots 360-degree scenes around through the mirror, and then projects them on a ring-shaped screen composed of 9 screens, equipped with 11 channels of stereo sound reproduction. For example, the Chinese Patent No. 93111105.6 patent document discloses a ring-screen TV projection system, including nine sets of TV projectors of ...

Claims

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Application Information

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IPC IPC(8): G03B35/08G03B35/20G03B35/00G03B37/04G02B5/08G02B5/10H04N5/225
Inventor 乔楠
Owner 乔楠
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