JPH1164783A - Method and device for composing and displaying reproduced image of hologram and projected two-dimensional video - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a high-reality dummy moving three-dimensional video just as if the three-dimensional video of a hologram is realized by composing the three-dimensional reproduced image of the hologram and a two-dimensional moving video such as a video. SOLUTION: The image type hologram 2 is constituted so that a reproduced image is recorded so as to be positioned at a hologram surface or near it and the white reproduced image is obtained. When the video 6 obtained by photographing an actual object recorded on the hologram is projected on the hologram 2 from in the incident direction 8 of reproducing illumination light by an image projector 7, the image 9 obtained by composing the three- dimensional image of the hologram and the two-dimensional video projected by the projector is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a hologram 3
The present invention relates to a method of synthesizing and displaying a two-dimensional video projected by an image projector such as a projector or a video projector with a two-dimensional reproduced image, and an apparatus therefor.

[0002]

2. Description of the Related Art A three-dimensional reproduced image of a hologram has been used for exhibitions and the like as a three-dimensional image that is indistinguishable from a real object. However, in order to make the image more interesting, animation has been required for many years. Have been. There are two ways to make holograms into movies: movie and computer. Filmization is technically possible but requires large equipment and is expensive. On the other hand, computerization is technically insufficient, and both systems are still far from practical use.

[0003]

By combining a three-dimensional reproduced image of a hologram with a two-dimensional moving image such as a video image, a three-dimensional moving image of a hologram can be obtained in a simpler method than a method of forming a moving image of the hologram itself. The present invention relates to a method for realizing a pseudo moving image three-dimensional image with high reality as realized by the method described above, and an apparatus therefor.

[0004]

[Means for Solving the Problems]

(A) A white light reproduction image type hologram 2 in which a subject 1 whose entire surface is uniformly colored with a high-brightness color such as white is recorded as a real or duplicate model is produced. The recording conditions for producing the hologram were set such that when the image was reproduced by irradiating white reproduction illumination light, the reproduced image 3 was positioned on the surface of the image type hologram 2 or in the vicinity of the front and back, and a white image was obtained. To make. (B) The actual object (for example, a person) 4 recorded on the hologram is photographed by an image recording device 5 such as a video camera.
At this time, the shape within the contour range of the subject is changed without changing the position, size, and orientation of the subject. For example, when the subject is a person, recording is performed if there is voice due to changes such as eye movement, mouth movement, facial expression change, speaking, and singing.
The photographing angle is appropriately set in consideration of the projection direction at the time of composition. Instead of actually shooting, video production may be performed using computer graphics. (C) The image 6 recorded in the preceding paragraph (b) and the edited version of the image 6 if necessary are accurately positioned in the size and position of the reproduced image 3 of the hologram using an image projector 7 such as a projector or a liquid crystal projector. Are projected onto the image type hologram 2 from the incident direction 8 of the reproduction illumination light source set under the hologram recording conditions. With the above configuration, the composite image 9 is generated by the three-dimensional reproduced image of the image type hologram and the two-dimensional image projected by the image projector. When a person in the recorded video speaks, the composite image becomes an image that feels as if a real person is speaking. (D) The principle of generating the composite image 9 of the three-dimensional reproduced image of the image hologram and the two-dimensional image projected by the image projector will be described in detail below. When the white hologram 10 is illuminated with white light, a white image 13 is obtained as a reproduced image. When this hologram is illuminated with an illumination light source having a high and low brightness, a bright portion and a dark portion are formed in the reproduced image, that is, the light and dark of the light source are combined with the reproduced image of the hologram. Next, red, green,
When a blue-colored subject is transferred to a slide and the slide image is used as an input image, the slide image is used to project the hologram reproduction illumination light from the incident direction and aligned with the hologram reproduction image. , Green,
The color is classified into blue, that is, the color of the projected two-dimensional image is combined with the reproduced image of the hologram. As described above, the color two-dimensional image is combined with the three-dimensional reproduced image of the hologram. If the slide is changed to a video projector, the moving image is combined with the reproduced image of the hologram. Of course 3
In the synthesis of a two-dimensional image and a two-dimensional image, the mutual positions do not exactly match, and the deviation increases as the viewpoint moves away from the center. However, in the case of an image type hologram in which the reproduced image is on or near the hologram surface, Is relatively small, and is within a practical range as an image. (E) Image projector 7 and image type hologram 2
However, if it is a separate unit, it takes up space and adjustment is also troublesome. Change the optical path direction using the mirror 17, or
If a hologram recorded with the reproduction illumination light direction set downward is used, the image projector can be installed in the housing below the device, the device can be downsized, and the adjustment can be easily performed unlike a separately installed system. (F) Generally, it is natural to view the hologram from the front, so that the projection light of the image projector is obliquely projected on the hologram. If image distortion or out-of-focus due to oblique projection becomes a problem, the subject 19 is recorded by using the photographing lens 20 shifted in parallel with the image sensor 21 as necessary. , The projection lens 23 shifted with respect to the display element 22 even during projection.
Is solved by projecting onto the hologram 2.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The method of the present invention will be described with reference to an example. A real or duplicate model uniformly colored with a high brightness color such as white is recorded on an image type hologram 2. This hologram is of a type that can obtain a white reproduced image when illuminated with white light, and recording conditions are set so that the reproduced image 3 is located on the hologram surface or in the vicinity of the hologram surface. When the subject is a person, it is necessary to take a photograph with a large-scale pulse laser in a real object, and uniform coloring is almost impossible. Therefore, it is convenient to use a duplicate model as the subject. The replica model is free to be large or small as long as it is similar to the real one. Next, an actual object (for example, a person) 4 is photographed by an image recording device 5 such as a video camera. In this case, makeup is usually applied, but the portion related to the overall shape such as the hairstyle is made as close as possible to the shape at the time of hologram recording. In the case of a person, it is good to produce changes such as movements of eyes, mouth and facial expressions, speaking and singing when shooting, and if there is voice, recording is also performed. The photographing angle is appropriately set in consideration of the projection direction at the time of composition. Instead of shooting, the shape and size may be produced by computer graphics, or an image shot by a live camera may be used. The reproduced image of the hologram recorded as described above and the captured image are combined as follows. The hologram 2 is set at the line of sight of the audience. The image taken as described above from the incident direction 8 of the reproduction illumination light source set in the recording condition of the hologram 2 is converted into a hologram 2 by using an image projector 7 such as a liquid crystal projector.
Is projected on the hologram 2 with its size and position adjusted exactly to the reproduced image 3 of FIG. With the above configuration, the three-dimensional image of the image type hologram and the projected two-dimensional image of the image projector are combined to generate a combined image 9. This composite image is a realistic image as if a real person were talking there when a person was photographed. If the hologram 2 and the image projector 7 are placed separately, they take up space, and if any of them is moved slightly, readjustment is required. When the optical path is changed using the mirror 17 and the image projector 7 is stored in the housing 18 below the apparatus, such inconvenience does not occur. The same can be achieved by recording the hologram 2 under the condition of reproducing and recording the illumination light obliquely downward.

[0006]

According to the present invention, it becomes possible to combine a three-dimensional reproduced image of a hologram and a projected two-dimensional moving image to create a pseudo three-dimensional moving image with a high degree of realism. The visual effects as if they were talking in a room were obtained, and a mysterious and interesting visual experience could be applied to the exhibition.

[0007]

[Brief description of the drawings]

FIG. 1 is a sketch drawing showing a state in which an image of an image type hologram used in the present invention is reproduced.

FIG. 2 is a sketch showing the principle of the present invention.

FIG. 3 is a sketch drawing showing shooting of a projected two-dimensional image used in the present invention.

FIG. 4 is a sketch showing the principle of the present invention.

FIG. 5 is a sketch showing a method for synthesizing a hologram image and a projected two-dimensional image according to the present invention.

FIG. 6 is a diagram showing a practical configuration of an apparatus for synthesizing a hologram image and a projected two-dimensional image according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Subject which reproduced the real thing or the reproduction model with uniform color 2 Image-type hologram 3 Reproduction image of image-type hologram 4 Actual thing of a subject, for example, person 5 Image recording device such as video camera 6 Recorded image of subject 7 Image projector 8 Reconstruction of hologram Incident direction of illumination light source 9 Composite image 10 Image-type hologram of white image type 11 Image of hologram reproduced by illumination light source with shading 12 White light source 13 White reproduced image 14 Slide projector 15 Image divided into three colors 16 An image of a hologram reproduced by a color-coded projection image 17 Mirror 18 Housing under the apparatus 19 Subject 20 Imaging lens 21 Imaging element 22 Display element 23 Projection lens

Claims (2)

[Claims] 1. An image projector 7 for a white light reproduction image type hologram 2 recorded so that a reproduction image 3 is located on the surface of the hologram or in the vicinity of the front and back of the hologram from an incident direction 8 of the reproduction illumination light source. A method of combining a three-dimensional reproduced image of a hologram and a projected two-dimensional image of a projector by projecting a two-dimensional image of a still image or a moving image having the same size and position as the reproduced image 3 of the hologram 2. 2. A three-dimensional reproduced image of a hologram and a projected two-dimensional image of the projector, which are constituted by the image type hologram 2 according to claim 1 and an image projector 7 provided in the incident direction 8 of the reproduction illumination light source. Equipment for.