Synchronized three dimensional imaging apparatus

Details Synchronized three dimensional imaging apparatus Synchronized three dimensional imaging apparatus

1989-11-20

1991-07-02

Kostak, Victor R.

Facsimile and static presentation processing

Static presentation processing

Attribute control

35821325, 358 91, H04N 1300

Patent

active

050289942

DESCRIPTION:

BRIEF SUMMARY
TECHNICAL FIELD

The present invention relates to a three-dimensional image pickup apparatus for picking up an object image in three dimensions.


BACKGROUND ART

As a basic method for picking up an object image in three dimensional, it has been known to shoot an object using two television cameras each disposed at a given angle to the object, the output signals from these two television cameras being alternately selected for every field. FIG. 5 illustrates diagrammatically the configuration of such a three-dimensional image pickup apparatus. In FIG. 5, shown on side A of the dashed line is a three-dimensional image pickup apparatus, while a three-dimensional display apparatus is shown on a side B. In this figure, the numeral 1 indicates an object, the numeral 2 a television camera A, and the numeral 3 a television camera B, each of the television cameras A and B having a lens disposed forwardly of an imaging screen provided therein. These are combined with a synchronizing signal generator 4, a switch 5, and an adder 6 to compose the three-dimensional image pickup apparatus. The three-dimensional display apparatus comprises a sync separator 7, a monitor television 8, and a pair of glasses 9.
Since the three-dimensional image pickup apparatus and three-dimensional display apparatus having the above configuration are well known in the art, only a brief description is given herein, and the three-dimensional image pickup apparatus will be described. The television cameras 2 and 3 are disposed forming a given angle .theta. between them with respect to the object 1. The scanning timings of the television cameras 2 and 3 are in synchronizing relationship with each other. For this purpose, the synchronizing signal generator 4 supplies pulse signals necessary for driving the television cameras, simultaneously to the television camera 2 and the television camera 3 (the television camera 2 corresponds to the human right eye, and the television camera 3 to the human left eye). The video signals from the television cameras 2 and 3 are respectively supplied to terminals a and b of the switch 5. The switch 5 is controlled by field pulses supplied from the synchronizing signal generator 4, alternately switching the output signals at the terminal c of switch 5 from field to field in such a way that the video signal fed from the television camera 1 is output in the first field and that the video signal fed from the television camera 2 is output in the second field. Both the video signal thus obtained by switching and the synchronizing signals supplied from the synchronizing signal generator 4 are supplied to the adder 6 which combines these signals to produce a three-dimensional image video signal. Needless to say, the television camera driving pulses, field pulses, and synchronizing signals supplied from the synchronizing signal generator 4 are all in synchronizing relationship with one another.
Next, the three-dimensional display apparatus will be described. The three-dimensional image video signal produced by the three-dimensional image pickup apparatus having the above-mentioned structure is transmitted via an appropriate means to the three-dimensional display apparatus. The transmitted three-dimensional image video signal is fed into the monitor television 8 for displaying the image. Since the three-dimensional image video signal is produced by alternately selecting the video signals from the television cameras 2 and 3, the image displayed on the monitor television 8 when directly viewed appears double and unnatural, and does not give a three-dimensional effect to the human eye.
In order to view the image displayed on the monitor television 8 in three dimensions, it is necessary for the observer to view the image shot by the television camera 2 only with his right eye, and the image shot by the television camera 3 only with his left eye. That is, the image displayed on the monitor television 8 must be selected so that the image pattern of the first field enters the right eye and the image pattern of the second field en

REFERENCES:
patent: 4575722 (1986-03-01), Anderson

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