JPH03104384A - Image pickup device - Google Patents

Abstract

PURPOSE:To pick up a moving picture in real time by moving a camera picking up a displayed picture specially and moving a shutter synchronously with the moving quantity to pick up an object at a pickup interval below the pickup interval depending on the size of a camera itself. CONSTITUTION:Plural small sized cameras 1-m are fixed on a belt 10 of a belt conveyor or a folded plate capable of driving such as a step of an escalator. Then a drive shaft 12 is driven and shutters of the cameras 1-m are switched when the moving quantity of the cameras 1-m reach a prescribed quantity with respect to an object ahead at 1m such as a viewing angle of 0.1 deg. from the object. A picked-up picture signal is outputted externally through a contact system devised so as not to be tangled with cables 14-1 to 14-m. Thus, the pickup at a pickup interval below the pickup interval depending on the size of the cameras 1-m themselves is attained and the moving picture is picked up in real time.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a photographing device for an image display method with added viewing conditions, and is particularly applicable to an image display device that controls a displayed image according to the viewing conditions of a display viewer. The present invention relates to a possible photographing device.

[Summary of the invention]

The second aspect of the present invention relates to a photographing device that can be applied to an image display device that controls a displayed image according to the viewing state of the viewer, such as the spatial position of the eyes of the display viewer and the direction of the line of sight. spatially move the camera to
By moving the shutter in synchronization with the amount of movement, it is possible to take pictures at a shooting interval that is less than the shooting interval determined by the size of the camera itself, and it is also possible to shoot videos in real time.

(Prior Art) Conventionally, in a head position tracking type image display device that controls a display image according to the head position of a display viewer's observation state, the image to be displayed is determined by photographing necessary images in advance, and They used data recorded on disk or memory. Therefore, you can display videos or “live” them in real time.
It is not possible to take and display images of the camera, and no prior art technology that achieves this function has been proposed so far.

[Problem to be solved by the invention]

A viewing state-added image display device that measures the position of the head and displays an image that would be seen at the measured head position changes the image seen by the eye depending on the viewing state, just like when viewing naturally. It is possible to create images with a natural and powerful feel.

In this method, the more freedom the observer has in the viewing state, that is, the viewing posture, the more natural and powerful the image can be. It is necessary to record it in memory and select and output the corresponding image according to the head position.

Further, as a method of photographing images to be displayed, there are methods of setting a camera on a pan head and moving its position, or arranging a plurality of cameras in order and photographing at the same time. In the former method, it takes time to take pictures, and although it is possible to take pictures of stationary objects, it is not possible to take videos. In the latter method, the interval at which images can be taken is limited depending on the size of the camera. For example, even if a so-called thumb-shaped camera with a diameter of 1 cm is used, the minimum image interval for a subject placed at a distance of 1 m is 0.57°. The human visual system is 0.
It has been confirmed that a movement interval of 1° is sufficient for detection, and is not sufficient to smoothly switch images.

Therefore, an object of the present invention is to realize an imaging interval smaller than the size of the camera itself, and to record moving images in real time. The object of the present invention is to provide a device that can perform shadowing.

[Means to solve the problem]

The photographing device according to the present invention includes a means for moving a camera fixed on a movable table, a means for driving the shutter of the camera, and a means for inputting a serial video signal obtained with the driving of the shutter of the camera to capture individual images. It is equipped with means for separating into video signals, and means for expanding the time axis of each separated video signal and converting it into a standard image signal.

Another photographing device according to the present invention includes a means for moving a mirror fixed on a movable table, a camera for photographing a reflected image of the mirror, and a serial video signal outputted from the camera is inputted to capture individual images. It is equipped with means for separating into video signals, and means for expanding the time axis of the separated video signals and converting them into standard image signals.

(Function) With the above configuration, the present invention spatially moves the camera that takes the displayed image, and moves the shutter in synchronization with the amount of movement, so that the shooting interval is less than or equal to the shooting interval determined by the size of the camera itself. In addition to making it possible to capture one shadow at a shooting interval of , it is also possible to shoot a video at multiple real times.

〔Example〕

An embodiment of the present invention will be described in detail below, but before specifically explaining an example of the present invention, an observation state added image display device will be described with reference to FIG.

As shown in FIG.
0 measures. The static displacement emphasis circuit 31 corrects this measurement data and outputs a corrected observation state A. On the other hand, the data measured by the observation state measuring section 30 is also input to a differentiator 32, and its output represents the amount of change in the observation state per unit time.

The dynamic change amount emphasis circuit 33 corrects this amount of change and outputs it as a corrected amount of change. Since the corrected amount of change remains the same as the dimension obtained by differentiating the observed state, it is used by the integrator 34.
Integrate by. The output of this integrator 34 is corrected observation state B
It's called.

Next, the corrected observation state A and the corrected observation state B are added to the adder 3.
5 and make this the final corrected observation state. Then, the image display unit 36 displays an image that would be seen if the observer was in this final corrected observation state.

The above is the flow of processing. Here, corrected observation state A
The meaning of the corrected observation state B will be explained.

The corrected observation state A is uniquely determined when the observation state of the observer is given, and the way it is determined depends on the characteristic curve of the static displacement emphasis circuit 31. That is, it shows the amount of change in the image due to static displacement of the observer's observation state.

On the other hand, the corrected observation state B is uniquely determined when the amount of change per unit time in the observation state of the observer is given, and is determined by the characteristic curve of the dynamic change amount enhancement circuit 33. That is, it indicates the amount of change in the image due to the amount of dynamic change in the observation state of the observer. The final corrected observation state is the sum of A,82 corrected observation states.

In this way, the dynamic observation state-added image display device can display the image that would be seen at that time depending on the observer's observation state, realizing an image rich in a sense of naturalness and pursuit. be able to. For this purpose, it is necessary to prepare a large amount of image information in advance according to the observation state of the inkstone examiner.

As a device for preparing such image information, a first embodiment of the present invention will be described with reference to FIG. In this embodiment, one or a plurality of small cameras, such as a so-called thumb camera, are fixed at regular intervals on a belt conveyor bell 10 or on a foldable and rotatable platform such as the stairs of an escalator. . And the rotating shaft 12
The shutter of the camera is opened and closed when the amount of movement of the camera reaches a certain predetermined amount, for example, by rotating the camera by a predetermined amount, such as 0.1" angle of view from the subject with respect to the subject lm ahead. The photographed image signals are output to the outside through a contact system designed to prevent the cable l4 from getting tangled.In the embodiment shown in Fig. 1, all image outputs are serially multiplex modulated, and the rotation axis An LED l4 placed above is used to transmit image data to a photodiode l6 placed on the same axis.

FIG. 2 is a diagram illustrating a second embodiment of the present invention.

In this embodiment, as shown in the figure, a mirror M. . When the amount of movement of M or the prism reaches a certain predetermined amount, the shutters of the cameras C, C2 set on the optical axis of the mirrors M, M or the prism are opened and closed.

FIG. 4 is a diagram showing the system of one camera among m cameras (m is an integer of 1 or more). Regarding the image output from the camera 1, n (n is an integer of 1 or more) images are time-axis compressed and serially multiplexed within one field. What is this image signal? The image signal switching section 40 separates the image into individual images, and each image is time-axis expanded in the time-axis expansion memory section 42 and returned to the original image. In this way, it is possible to simultaneously obtain n image outputs with shifted photographing positions. In addition, by using m cameras, m
xn outputs are obtained.

Next, the operation shown in FIG. 4 will be explained using the timing diagram of control {g shown in FIG. 5).

In FIG. 5, VD is a vertical synchronization drive signal for each field. During this period V, the image capture control signal f as shown in the figure. (pulse of VD/n), and images are taken during the period when this f. is at a high level (i.e., 1) to take the necessary number of images. f. is a control signal f. Generated by the generator 44, For example, in addition to driving the camera shutter during the high level (ie, 1) period, the motor drive section 46 synchronously drives a servo motor such as a pulse motor.

The video signal output from camera 1 in FIG. 4 is V in FIG. As shown in U■, n images are arranged in order. The video signal switching unit 40 converts this signal into an image capture control signal f. Separate each image using . The separated image signal is converted into a regular video signal in the time axis expansion memory section 42. As shown in FIG. 5, the time axis expansion memory section 42 operates by writing one image during the VIW period and reading it out during the VIR period, which is n times the period, thereby expanding the image.

In this way, using one camera, it is possible to simultaneously obtain n images shifted at regular intervals, and by arranging multiple such cameras, for example, m cameras, it is possible to simultaneously capture nxm images. It is possible.

The timing diagram in Figure 5 is a general example, but especially for 1760
FIG. 6 shows an example in which the shutter is released 18 times within one field of seconds. If the shutter is released every 1/1080 seconds, 18 images can be taken in one field, and if the camera is moved at a speed of 108 degrees/second, images can be taken in units of 0.1". Here, the angle is the angle of view from the subject.The moving speed for the subject at lm distance is 2.75 m/sec (9.9 km/sec).
), and even when converted to the rotational speed of the rotating shaft, it is 18
8PM (18 rotations per minute), which is a speed that can be achieved with a mechanical system.

By adopting the above configuration, images necessary for the observation state added image display method can be photographed, and moreover, real-time moving images can be photographed at a photographing interval smaller than the size of the camera. By using the present invention, it is possible to realize a display space that is similar to the real world.

〔Effect of the invention〕

By implementing the present invention, it is possible to capture real-time moving images at an interval smaller than the size of the camera, and it is possible to realize a display space that is similar to the real world using the observation state added image display method. Furthermore, the number of cameras required for this can be significantly reduced, making it possible to easily implement the system. IO... Belt, l2... Rotating shaft, 20... Belt, 22... Rotating shaft, M,, M2... Mirror C1C2... Camera, 40... Control signal switching unit, 42 . . . Time axis expansion memory part, 44 . . . Control signal fn generation section, 46 . . . Motor drive section. Ne 11I1 1) $1 Clothes J Enii 4 Poor 1st place U eye figure L Figure 2 Figure 42-1 46 lacquer signal n and beads 1 hook Figure 4

Claims (1)

[Claims] 1) means for moving a camera fixed on a movable table; means for driving the shutter of the camera; and inputting a serial video signal obtained as the shutter of the camera is driven. 1. A photographing device for an observation state added image display system, comprising means for separating into individual video signals, and means for expanding the time axis of each separated video signal and converting it into a standard image signal. 2) means for moving a mirror fixed on a movable table; a camera for photographing a reflected image of the mirror; and means for inputting a serial video signal output from the camera and separating it into individual video signals; 1. A photographing device for an observation state added image display system, comprising: means for expanding the time axis of the separated video signal and converting it into a standard image signal.