JPH1132255A - Telecine device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive telecine device which can prevent resolution deterioration, can reduce the time required for telecine changing work, and can rotate an image recorded on a film. SOLUTION: A telecine device 1 is provided with a film-supplying device, having a film feeding section which intermittently feeds a film 100 to a photographing section 2 by repeating the movement and stoppage of the film 100, a camera 4 which is a photographing device that takes an image recorded on the film 100 stopped in the photographing section 2, and a camera-moving base 7 which supports the camera 4 and has a function such that is controls at least the rotational movement of the camera 4 around the optical axis of a photographing lens 4a of the camera 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a telecine apparatus for converting an image recorded on a film into a video signal.

[0002]

2. Description of the Related Art Conventionally, there is a telecine device for converting a movie or a still image recorded using a film or a slide into a television signal, that is, a so-called telecine conversion.

A telecine device is, for example, an image pickup device for taking an image recorded on a film, for example, a high-resolution CCD.
Images are taken with a camera and converted to video signals.

In the above-mentioned telecine apparatus, there is a case where a process of rotating an image recorded on a film is performed by a special effect or a correction of an image inclination due to the inclination of the camera at the time of photographing. Conventionally, an image recorded on a film is once taken into a frame memory and then rotated by image processing.

[0005]

However, an image processing image in which a film image is once taken into a frame memory and rotated requires an expensive device, and the resolution is degraded because the signal obtained by the CCD camera is processed. There was a problem.

Further, there has been a demand for performing a process of easily rotating an image without using means for storing the image in a frame memory and rotating the image based on the image. For example, there has been a demand for rotating an image while directly monitoring an output signal from the CCD camera.

Therefore, the present invention has been made in view of the above-mentioned circumstances, and it is possible to prevent deterioration in resolution and shorten the time required for telecine conversion while being inexpensive.
An object of the present invention is to provide a telecine device capable of performing a process of rotating an image recorded on a film.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a telecine apparatus according to the present invention comprises: a film feeding means for intermittently feeding a film to a photographing unit by repeatedly moving and stopping the film; An imaging device for capturing an image recorded on a still film is provided, and movement control means for supporting the imaging device and controlling the rotational movement of the imaging device about at least the optical axis of the imaging lens.

[0009] With this configuration, the telecine apparatus is an image pickup apparatus in which an image recorded on a film intermittently sent to a shooting unit by a film feed unit is controlled by a movement control unit. To shoot.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. An embodiment of the present invention is a telecine device that converts an image recorded on a film into a television signal.

As shown in FIGS. 1 and 2, the telecine apparatus includes a film feeder 6 having a film feeder 5 for intermittently feeding a film 100 to a photographer 2 by repeatedly moving and stopping the film 100; Camera 4, which is an imaging device that captures an image recorded on film 100 that has been
And a camera moving table 7 that supports the camera 4 and has a function of controlling the rotational movement of the camera 4 about at least the optical axis of the imaging lens 4 a of the camera 4.

In the telecine device 1,
As shown in FIG. 1, an image recorded on the film 100 is illuminated by a light source 3, and the image illuminated by the light source 3 is reflected by a mirror 8 and reaches a camera 4.

[0013] The camera 4 is a C
As shown in FIG. 1, the CD camera includes a photographic lens unit 4a and a main unit 4b.

As shown in FIG. 2, the film supply device 6 roughly stores a film supply unit 6a for supplying the film 100 to the photographing unit 2 and a film 100 sent from the photographing unit 2. A film storage section 6b;
A film feeder 5 for intermittently feeding the film 100 to the photographing unit 2.

The film supply unit 6a of the film supply device 6
A supply reel 11 on which the film 100 is wound and rotated to send out the film 100;
A supply-side tension regulator 12 that applies tension to the film 100 so that the film 100 sent from the supply reel 11 does not sag, and a film 100 that is sent from the supply reel 11 via the supply-side tension regulator 12 are continuously connected. And a supply-side continuous sprocket 13 that rotates and feeds the film to the film feed unit 5.

Incidentally, rollers 14a, 14b, 14c, 14d and 14e for feeding the film are appropriately disposed between the supply reel 11 and the supply-side continuous sprocket 13.

The film feed unit 5 to which the film 100 is continuously fed from the supply side continuous sprocket 13 intermittently rotates the film 1 to the photographing unit 2 by intermittent rotation.
The intermittent sprocket 5a feeds 00, and the take-up intermittent sprocket 5b feeds the film 100 sent from the supply intermittent sprocket 5a and passing through the photographing unit 2 by intermittent rotation. For example, the supply intermittent sprocket 5a and the take-up intermittent sprocket 5b rotate intermittently in synchronization.

Thus, the film feeder 5 can intermittently feed the film 100 to the photographing unit 2 by repeatedly moving and stopping the film 100.

A film holder 15 for holding the film 100 is provided between the supply intermittent sprocket 5a and the take-up intermittent sprocket 5b.

The film storage section 6b of the film supply device 6 continuously rotates the film 100 fed from the take-up side intermittent sprocket 5b and sends it to the take-up reel 16.
7, a take-up-side tension regulator 18 for applying tension to the film 100 so that the film 100 does not sag between the take-up-side continuous sprocket 17 and the take-up reel 16, and the film 100 is wound by rotating. And a take-up reel 16 for loading and storing.

Rollers 19a, 19b, 19c, 19d, 1 for feeding the film between the take-up reel 16 and the take-up side continuous sprocket 17.
9e is appropriately disposed.

The take-up side continuous sprocket 1
In the process of sending the film 100 from 7 to the take-up reel 16, the analog audio pickup 20 for 35 mm film is provided. The 35 mm film analog audio pickup 20 is a device that reads an audio signal recorded on the film 100.

In the telecine apparatus 1 having the film supply device 6 configured as described above, the film 100 is intermittently fed to the photographing section 2 and the film 10 is stopped by the photographing section 2.
0 can be photographed by the camera 4.

As shown in FIG. 3, a camera moving base 7 for controlling the movement of the camera 4 can move the camera 4 in the X-axis direction, the Y-axis direction, and the Z-axis direction. It is configured to be rotatable about the θ axis which is coaxial with the optical axis.

Here, the X-axis direction is a direction in which the camera 4 moves perpendicular to the optical axis, and the Y-axis direction is a direction in which the camera 4 moves in the optical axis. The direction orthogonal to the X-axis direction, and the Z-axis direction is a direction in which the camera 4 moves on the optical axis.
The rotation direction about the θ axis is a direction in which the camera 4 rotates about the optical axis.

In the embodiment of the present invention, the film 100
Is reflected by the mirror 8 and photographed by the camera 4, the X-axis direction is the direction in which the camera 4 moves parallel to the image reflected by the mirror 8, and the Y-axis direction Is a direction in which the camera 4 moves parallel to the image reflected by the mirror 8 and is a direction that is orthogonal to the X-axis direction. Is the direction in which the camera 4 moves in the vertical direction, and the rotation direction about the θ axis is the direction in which the camera 4 rotates about the θ axis in a plane orthogonal to the Z axis direction.

As shown in FIG. 3, the camera moving base 7 is slidably mounted on the Z-axis base 51 with a Z-axis base 51 slidably mounted on the fixed base 53 in the Z-axis direction. X-axis base 41, Y-axis base 31 slidably mounted on X-axis base 41, mounted rotatably on Y-axis base 41, mounted to rotate about θ-axis And a camera mount 21 that is provided.

As shown in FIGS. 3 and 4, the camera moving table 7 has a camera mounting table 21, and the camera 4 is mounted on the camera mounting table 21. Camera 4
In FIG. 4, the camera mount 21 is attached so that the lens unit 4a is located on the right side.

As a mechanism that enables rotational movement about the θ axis, the camera moving table 7 is mounted on a Y-axis base 31 and supports bearings 22 and 23 supporting both ends of the camera mounting table 21. A θ-axis motor 25 is attached to the shaft base 31 and is connected to the camera mount 21 through the coupling 24. The camera 4 is mounted on the camera mount 21 such that the axis centers of the bearings 22 and 23 coincide with the optical axis of the photographing lens 4a.

The camera moving base 7 can rotate the camera mount 21 by rotating the θ-axis motor 25 forward and backward to rotate the camera mount 21 around the θ-axis, thereby rotating the camera 4. For example, as shown in FIG. 3, the camera moving base 7 rotates the θ-axis motor 25 clockwise in FIG.
Called CW direction. ), The camera 4 is rotated in the θ _CW direction (clockwise direction in FIG. 3), and the θ-axis motor 25 is rotated in the counterclockwise direction (hereinafter, referred to as CCW direction), thereby _obtaining θ _CCW. Direction (Fig. 3
The camera 4 is rotated in the counterclockwise direction in FIG.

As a mechanism enabling movement in the Y-axis direction, the camera moving base 7 includes a Y-axis base 31 and a Y-axis ball screw 32 for moving the Y-axis base 31 by rotation.
And a Y-axis motor 33 for rotating the Y-axis ball screw 32.

The camera carriage 7 can move the camera 4 by rotating the Y-axis motor 33 forward and backward, thereby moving the Y-axis base 31 reciprocally in the Y-axis direction. For example, as shown in FIG. 3, the camera moving base 7 moves the camera 4 in the Y _CW direction (upward in FIG. 3) by rotating the Y-axis motor 33 in the CW direction. the by rotating in the CCW direction, the camera 4 (in FIG. 3, downward) Y _{CC W} direction is moved.

As a mechanism enabling movement in the X-axis direction, the camera moving base 7 includes an X-axis base 41 on which a Y-axis base 31 is mounted, and an X-axis ball screw 42 for moving the X-axis base 41 by rotation. And an X-axis motor 43 for rotating the X-axis ball screw 442.

The camera carriage 7 can move the camera 4 by reciprocating the X-axis motor 43 by reciprocating the X-axis motor 43 forward and backward in the X-axis direction. For example, as shown in FIG.
By rotating the axis motor 33 in the CW direction, the camera 4 is moved in the X _CW direction (the far left direction in FIG. 3), and by rotating the X axis motor 33 in the CCW direction, the camera 4 is moved in the X _CCW direction. (In the lower right direction in FIG. 3)
Move to

As a mechanism enabling movement in the Z-axis direction, the camera moving base 7 includes a Z-axis base 51 on which an X-axis base 41 is mounted, and a Z-axis ball screw 52 for moving the Z-axis base 51 by rotation. And a Z-axis motor 53 for rotating the Z-axis ball screw 52.

The camera moving base 7 can move the Z-axis base 53 so as to reciprocate on the Z-axis by moving the Z-axis motor 53 forward and backward, thereby moving the camera 4. For example, as shown in FIG. 3, the camera moving base 7 rotates the Z-axis motor 53 in the CW direction, thereby moving the camera 4 in the Z _CW direction (in FIG. By rotating 53 in the CCW direction, the camera 4 is moved in the Z _CCW direction (in FIG. 3, in the far right direction).

The lead of each ball screw is set to, for example, 4 mm. Further, a stepping motor is used as the axis motor of each axis.

The camera moving table 7 constructed as described above can be moved by rotating the camera 4 in each direction by rotation of each axis motor.

FIG. 5 shows a control circuit block of each axis motor.

The circuit section of the camera moving base 7 includes axis sensor sections SX and S composed of a CW direction limit sensor 61, a CCW direction limit sensor 62 and an origin sensor 63.
Y, SZ, Sθ, and each axis sensor section SX, SY, SZ,
The X-axis stepping motor (X X-axis stepping motor driver 65 for controlling the Y-axis stepping motor (Y-axis motor) 33, Y-axis stepping motor driver 66 for controlling the Y-axis stepping motor (Y-axis motor) 33, and Z-axis stepping motor (Z
(Stepping motor) 53 and a θ-axis stepping motor driver 68 controlling the θ-axis stepping motor (θ-axis motor) 25.

In the camera carriage 7, each axis base and the like are moved between the CW direction limit sensor 61 and the CCW direction limit sensor 62, and the origin sensor 63 detects the origin when the power is turned on. The origin is detected when the power is turned on because the camera moving table 7 obtains the coordinate values for each axis by the pulse number of the stepping motor.

The coordinate system of the camera carriage 7 constructed as described above is represented by a monitor image obtained by the camera 4, as shown in FIG.
_CW direction, θ _CCW direction, and X axis
X _CW direction and X _CCW direction are W direction and CCW direction, are CW direction and CCW direction in the Y-axis Y _CW
Direction and the Y _CCW direction, and in the Z axis, the Z _CW direction, the Z _CCW direction in the drawing front direction and the drawing depth direction.
It has coordinates in the direction.

The range of the image actually recorded on the film 100 to be actually used is determined as follows.

FIG. 7 shows an image recorded on the film 100, and the range A indicates the actual range where the image is recorded on the film 100.

The image captured by the camera 4 is an image in the range B, and the image to be used is
An image in a range C slightly smaller than the range B is obtained. For example, the image range C actually used is determined by the format of the film.

For example, if the film 100 is a 35 mm film, there are formats in which the size of an image to be used is slightly different, for example, 20.98 × 11.35, 21.95 × 1
The format is slightly different, such as 3.19, 21.93 × 16.0, and the image range C to be used is determined according to the format of the film.

Here, the size of the image is determined by moving the camera 4 in the Z-axis direction. The image is reduced (reduced) by moving the camera 4 in the Z _CW direction, and the camera is moved in the Z _CCW direction. 4 can be moved to enlarge (enlarge) the image.

The telecine device 1 having the above functions
8A, a case in which an image recorded on the film 100 at an angle α in the θ _CCW direction while being corrected is taken into the camera 4 while being corrected.

When rotating the camera 4 in the θ-axis direction, the telecine device 1 outputs a pulse signal from the program controller 64 to the θ-axis stepping motor driver 68, and connects the coupling 2 to the θ-axis stepping motor 25.
The camera mount 21 connected at 4 is rotated.

Here, one of the θ-axis stepping motors 25
Assuming that the moving amount of the step is 0.18 °, the correction in the case where α is 1.8 ° becomes possible by the output of 10 pulses.

Therefore, when α is 1.8 °, 10 CW pulses are output from the program controller 64 to the θ-axis stepping motor driver 68, and
The θ-axis stepping motor 25 is operated to rotate the camera 4 by 1.8 ° in the θ _CW direction. As a result, the image becomes θ
_This means that the image has been rotated by 1.8 ° in the _CW direction. As a result, the inclination changes from FIG. 8A to FIG. 8B, and a corrected image is obtained.

For the X, Y, and Z axes, a pulse signal is output from the program controller 64 as appropriate. For example, 1
Step angle of pulse motor per pulse is 0.36 °
In this case, by outputting 500 CW pulses, it can be moved by 2 mm in the CW direction. The number of pulses is (2 mm / 4 mm) × (360 ° /
0.36 °) = 500.

Therefore, for example, the program controller 64 sends the X-axis stepping motor driver 65
By outputting 500 W pulses, the camera 4
It can be moved 2 mm in the _CW direction.

Note that, by performing the same operation in the Y-axis direction and the Z-axis direction as described above in the X-axis direction, the camera 4
Can be moved in each direction.

Therefore, the telecine device 1 can take an image of the film 100 which has been intermittently fed by the film feeder 5 of the film feeder 6 and brought into a stationary state by rotating the camera 4.

As a result, the telecine device 1 fetches the image which has been conventionally performed into the frame memory,
It does not require a rotation processing device and can capture the rotated image without processing signals from a camera such as a CCD camera. Therefore, the image rotation processing can be performed with an inexpensive configuration. Since the signal is not processed from the image, the resolution does not deteriorate.

Further, coordinates relating to the X-axis, Y-axis, Z-axis, and θ-axis can be stored in the program controller 64, so that the position of the camera 4 in a video scene of a fixed length, for example, in a frame can be moved. Will be possible.

First, the moving position of the camera 4 with respect to the image requiring correction is stored in the program controller 64.

Then, the film feed unit 5 feeds the film 100 and the camera moving base 7 moves the camera 4 so that an image is captured by the camera 4 whose movement has been stopped while the film 100 is stopped. Set.

For example, when correction is required for each image, as shown in FIGS. 9A to 9C,
The operations of moving the film 100, capturing images by the camera 4, and moving the camera 4 are performed by moving the camera 4 during the moving period (FIG. 9A) of the film 100 (FIG. 9A).
(C)) is set, and after the movement of the film 100 and the camera 4, for example, after the movement of the film 100 and the camera 4,
The image capture period (FIG. 9)
(B)) is performed according to the set timing chart.

By following the above time chart,
The camera 4 can be moved for each image while performing the intermittent feeding of the film 100, and thereby the position within the frame can be moved.

That is, while the film 100 is running, an image recorded on the film 100 can be rotated and taken out for each frame.
Images can be imported with automatic correction for each frame,
The time for the telecine conversion operation can be reduced.

[0063]

In order to solve the above-mentioned problems, the telecine apparatus according to the present invention comprises a film feeding means for intermittently feeding and stopping a film to a photographing section, and a film stopped at the photographing section. An image capturing apparatus that captures an image recorded in the image capturing apparatus, and a movement control unit that supports the image capturing apparatus and controls the rotational movement of the image capturing apparatus at least around the optical axis of the image capturing lens. An image recorded on the film intermittently fed can be photographed by a camera whose photographing position is controlled by the movement control means.

Thus, the telecine device can take an image of the film which has been intermittently fed by the film feeding means and brought into a stationary state by rotating the camera. Therefore, the telecine device captures an image which has been performed in the past into a frame memory, and does not require a device for performing a rotation process, and captures a rotated image without processing a signal from a camera such as a CCD camera. Therefore, the image rotation processing can be performed with an inexpensive configuration, and the resolution is not deteriorated because no signal is processed from the camera.

The telecine device can rotate and take out an image recorded on the film for each video scene of a fixed length while running the film. In this case, the image can be automatically corrected, and the time required for the telecine conversion operation can be reduced.

[Brief description of the drawings]

FIG. 1 is a side view showing a telecine device according to an embodiment of the present invention.

FIG. 2 is a front view of the telecine device, mainly showing a configuration of a film supply device provided in the telecine device.

FIG. 3 is a perspective view showing a configuration of a camera moving base provided in the telecine device.

FIG. 4 is a side view showing a configuration of the camera moving base.

FIG. 5 is a block diagram showing the camera moving base.

FIG. 6 is an image recorded on a film obtained by a camera provided in the telecine device and showing a moving direction of the camera.

FIG. 7 shows an image recorded on the film;
FIG. 3 is a diagram illustrating a range where an image is recorded on a film 100, an image range captured by a camera, and an image range actually used.

FIG. 8 is a diagram used to explain a case in which an image recorded on a film tilted is corrected.

FIG. 9 is a diagram showing a time chart including a film speed, a camera image capturing pulse, and camera movement.

[Explanation of symbols]

1. Telecine device, 2. Photographing unit, 3 light sources, 4 cameras, 5 film feed unit

Claims (3)

[Claims] 1. A film feeding means for intermittently moving and stopping a film to a photographing section and intermittently feeding the film, an image pickup device for photographing an image recorded on the film stopped by the photographing section, and the image pickup A telecine device, comprising: a movement control unit that supports the device and controls the rotational movement of the imaging device at least about the optical axis of the imaging lens. 2. The telecine device according to claim 1, wherein an image is taken by an imaging device in which the movement of the film is stopped during the stop period. 3. The telecine apparatus according to claim 1, wherein the movement control means controls the rotational movement of the image pickup apparatus for each video scene having a predetermined fixed length.