JPH0698242A - Image pickup device - Google Patents

Abstract

PURPOSE:To provide an image pickup device which reconstitutes an image with high accuracy corresponding to a position mark provided separately from the image for detecting the positions of joints in plural images photographed while being divided. CONSTITUTION:Concerning this image pickup device, a photosensitive film 1 provided with a magnetic track previously recorded a prescribed address signal 4 is mounted, the address signal 4 is read in the case of taking the film up with a film feeding mechanism 8, and the film is stopped when a prescribed value is counted. Corresponding to the set address signal and the real stopped address signal, a displaced variable (rotary variable R and parallel moving amount S) is calculated by a displaced variable detection circuit 21, the images picked up while being divided into a prescribed number are synthesized based on the displace variable by an image synthesizing circuit 22 later, and the reconstituted image is outputted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image pickup apparatus which obtains a wide range of images and obtains a high resolution by taking a plurality of images of a subject on a photosensitive film having a magnetic recording track and reconstructing the images.

[0002]

2. Description of the Related Art Generally, there is an image pickup apparatus using a solid-state image pickup element such as a CCD or CMD in which optical sensors (image pickup elements) are arranged in a matrix. Higher resolution is demanded for these image pickup apparatuses, and improvements such as higher density of image pickup elements are being made.

However, in reality, there has been a limit in increasing the density of the image pickup device due to problems in manufacturing technology, reduction in yield, and the like. Therefore, in order to obtain a high-resolution image or an image in a wide range, for example, one optical image is distributed in four directions by a prism as proposed in JP-A-60-248079, and this distribution is performed. The divided image is received by the four image pickup elements having a relatively small area, which are arranged at fixed positions. And combine the image output of each image sensor,
By reconstructing the original image, we realized an image with high resolution over a wide range.

Further, Japanese Patent Application Laid-Open No. 63-191483 also proposes an image pickup apparatus using four similar image pickup elements. This is done by arranging each image sensor at a certain distance and closely arranged on the same surface, scanning so that the subject image (original image) moves intermittently, dividing the original image, and shooting several times. The entire field of view is imaged by. For the movement in this image pickup device, the condensing optical system is moved vertically and horizontally, and the above-mentioned optical path distributing means such as a prism is unnecessary.

[0005]

However, in the methods described in the above-mentioned publications, the subject images (original images) are both divided, and each divided image is scanned by one image pickup device, or a plurality of images are scanned. The image pickup devices of (1) and (2) simultaneously receive the images, and the outputs of the image pickup devices are combined to reconstruct the original image.

Therefore, in the reconstruction of the original image, in order to capture the continuous portions of the divided images, it is necessary to control the optical system such that the optical system can be completely translated. Therefore, there is a problem in that the control device for the optical system becomes complicated and the cost becomes high.

As a method for reconstructing the original image, the image is moved to a position where the images are connected based on the correlation signal of each image,
Some reconstruct the original image. However, when the contrast of the imaged image is small, the correlation signal becomes gentle, and even a small amount of noise does not detect the correct motion vector, and the image cannot be reconstructed correctly.

Further, the finer the image, the smaller the light amount. That is, the contrast of the image is reduced, and in the synthesis using the correlation signal, the joint portion of the divided images cannot be accurately positioned, and the reconstruction cannot be performed in some cases.

It is therefore an object of the present invention to provide an image pickup apparatus which reconstructs an image with high accuracy by using a position mark which is provided separately from the image to detect the position of a joint between a plurality of divided images.

[0010]

In order to achieve the above object, the present invention provides a film in which image information and a predetermined address signal are recorded in advance, and an image pickup in which the image information of the film is divided into a predetermined number and divided image information is taken out. Means, a film feeding means for moving the film to a position where an image should be picked up, a detecting means for detecting a desired stop position of the film moved by the film feeding means by the address signal, and a detecting means by the detecting means. A displacement amount detecting means for detecting a displacement amount consisting of a rotation amount and a parallel movement amount from the detected address signal of the desired stop position and the address signal of the film stop position detected by stopping the film feeding means, and the image pickup means. Image reconstructing means for compensating and joining the respective divided image information extracted by the above-mentioned displacement amount, and the image reconstructing means. Provided is an imaging device composed of an image information output means for outputting the image information reconstructed by the formation means.

[0011]

In the image pickup apparatus having the above-described structure, a photosensitive film having a magnetic track on which a predetermined address signal is recorded is mounted, the address signal is read when the film is wound, and the film is stopped at a predetermined count number. Then, by the displacement amount (rotation amount R, parallel movement amount S) obtained from the address signal set to stop and the actual address signal stopped, a predetermined number of divided images are image-synthesized. At this time, the image is reconstructed based on the displacement amount.

[0012]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 shows the configuration of an image pickup apparatus as a first embodiment of the present invention, which will be described.

A photosensitive film 1 as shown in FIG. 2 is used for this image pickup device. The film 1 is provided with an image pickup area 2 on which an image is recorded, and magnetic tracks 3 made of a magnetic material above and below the image pickup area 2 (perforation side not shown). Address signals (“1”, “0”) 4 as shown in FIG. 3 are written in the magnetic track 3 in advance. Further, in this embodiment, the image pickup apparatus takes three images of the image pickup area 2 of one frame as shown in FIG.
It is assumed that the image is divided and each of the divided images 2a, 2b, and 2c is detected by an image pickup device described later. In the imaging device,
Under the control of the controller 5, the motor control circuit 6 and the motor 7 wind up the film 1 mounted on the film feeding mechanism 8.

Magnetic heads 9a, 9b capable of contacting the magnetic track 3 of the film 1 to read the above-mentioned address signal 4 and retracting, and a light source 10 for taking out an image recorded in the image pickup area 2 are provided. ing.

The image picked up by the light source 10 is condensed by the optical system 11 and the solid-state image pickup device 12
Projected on. In the present embodiment, a CMD (Charge Modulation) that can be formed in the solid-state image sensor 12 in a relatively flexible shape.
Device) was adopted. The image signal detected by the CMD 12 is amplified by the preamplifier 13, and the A / D converter 1
4 is converted into a digital signal. Then, each divided image 2a, 2b, 2c from the signal processing circuit (SP) 15
Are recorded in the frame memories 16, 17 and 18, respectively. Further, a low pass filter (LPF) or the like may be provided on the output side of the preamplifier 13 to remove noise components from the amplified image signal and input to the A / D converter 14, or the FPN (fixed pattern of the CMD 12 may be used. Noise; Fi
A xed Patern Noise) removal circuit may be provided.

The address signals read by the magnetic heads 9a and 9b are counted by the counting circuits 19 and 20, and when a predetermined count number is reached, the film 1
To stop winding. Displacement amount (deviation amount) from a predetermined stop position according to the number of counts from the counting circuits 19 and 20 to the displacement amount detection circuit 21 until the winding of the film 1 is stopped.
To detect. This displacement amount is composed of R (rotation amount) and S (parallel movement amount). Next, the image signal is read from the frame memories 16, 17, and 18 under the control of the controller 5.

Then, the read image signals are combined and reconstructed by the image combining circuit 22 based on the displacement amounts R and S. Regarding the method of obtaining the displacement amounts R and S and the reconstruction process, Japanese Patent Application No.
The detailed description is omitted here. The image reconstructed by the image composition circuit 22 is output by the display device 23 and the printer 24,
It is also stored in the storage device 25. Next, image pickup by the image pickup apparatus configured as described above will be described.

First, the film 1 on which an image is exposed is mounted on the film feeding mechanism 8. At this time, the magnetic heads 9a and 9b that come into contact with the magnetic track 3 of the film 1 are retracted, and after mounting, the position A shown in FIG.
Shall be brought into contact with.

Then, the motor 7 is driven by the control of the controller 5 to wind up the film 1 mounted on the film feeding mechanism 8. At this time, the address signals read from the magnetic track 3 are counted by the coefficient circuits 19 and 21, and when a predetermined number is reached, the film feeding mechanism is stopped, and the magnetic head 9a, 9b is moved to the position B shown in FIG. 9b is stopped. Here, the image of the film 1 is taken out by the light source 10, projected on the CMD 12 through the optical system 11, and the image signal is detected. The detected image signal passes through the preamplifier 13, the A / D conversion circuit 14, and the SP 15 as described above,
It is stored in the frame memory 16.

Similarly, images are taken out at position C and position D shown in FIG.
To store. Then, the image synthesizing circuit 22 reads each image from the frame memories 16, 17, and 18, synthesizes the images based on the displacement amounts R and S detected by the displacement amount detecting circuit, and reconstructs the images.

The division position shown in FIG. 4 (b) is a case where the vehicle is stopped at an accurate predetermined position with no deviation.
Due to the inertia (inertia) generated when the film feeding mechanism 8 stops, it cannot be stopped accurately at a desired position. Therefore, the positions B ′, B ″, as shown in FIG.
It stops at the positions C ′, C ″ and the positions D ′, D ″ and captures an image.

When the image pickup position is deviated as described above,
The difference between the predetermined count number of the address and the actually required count number according to this embodiment corresponds to the motion vector described in Japanese Patent Application No. 4-94473 utilizing the above-mentioned correlation,
The amount of displacement can be calculated, and accurate image synthesis can be realized.

Therefore, in the first embodiment, by using the photosensitive film in which the address signal is stored, an accurate displacement amount can be obtained even for an image with a small contrast where the correlation cannot be used, and a relatively small solid-state image pickup is possible. The high-resolution original image captured by the element is reconstructed. In addition,
Motion vector detection may be performed by a conventional correlation calculation using perforation of a photosensitive film.

Next, FIG. 5 shows the structure of an image pickup apparatus as a second embodiment of the present invention, and will be described. Here, among the constituent members of the second embodiment, which are equivalent to the constituent members shown in FIG.
The same reference numerals are given and the description thereof is omitted.

In the image pickup apparatus of the second embodiment, as shown in FIG. 6, three CCDs 26, 27 and 28 and a half mirror 2 are used.
It is an apparatus for reconstructing an original image by further dividing an image obtained by dividing the film into three parts by using the image No. 9 into three parts.

In this image pickup device, the divided image 2a shown in FIG. 4A taken out by the light source 10 is condensed by the optical system 11 and further divided into three by the half mirror 29 in the image pickup section 30. The divided images are projected on 27 and 28. The divided images detected by the CCDs 26, 27, 28 are combined by the preceding image combining circuit 31,
It is stored in the frame memory 16. Similarly, FIG.
The divided images 2b and 2c are captured and stored in the frame memories 17 and 18, respectively. Then, similarly to the above-described first embodiment, the original image is reconstructed by the image synthesizing circuit 22 based on the displacement amounts R and S detected by the address signal. In the second embodiment, as a result, one original image is divided into 9 and reconstructed, and an image with a higher resolution than that of the first embodiment can be captured.

Next, the structure of an image pickup apparatus as a third embodiment of the present invention is shown in FIG. 7 and will be described. Here, the same members as those shown in FIG. 1 of the constituent members of the third embodiment are designated by the same reference numerals, and the description thereof will be omitted.

The address signal recorded on the magnetic track 3 of the film 1 used in this image pickup device is recorded so that the film feeding mechanism 8 stops at a desired position. In the present embodiment, as shown in FIG. 8, the image of one frame is set to be divided into three, so three stop positions are recorded. This position corresponds to the positions A, B, and C shown in FIG.

In this image pickup apparatus, the film 1 for recording the above-mentioned address signal is mounted on the film feeding mechanism 8, and the magnetic heads 31a and 31b contacting the magnetic track 3 of the film 1 are controlled by the controller 5. It is movable along the magnetic track direction by the driving units 32a and 32b.

In the image pickup by the image pickup apparatus constructed as described above, first, the film 1 is mounted on the film feeding mechanism 8 and the film 1 is wound up under the control of the controller 5. When the above-mentioned first address signal is detected by the magnetic heads 31a and 31b, the film feeding mechanism of the film 1 is stopped and the image pickup position is set to the position A shown in FIG. 4B.

At this time, the position where the film 1 is actually stopped is stopped at a position over the address signal recording position due to the inertia of the film feeding mechanism 8. Magnetic head 3
1a and 31b are moved from their stop positions to the address signal recording position by the movable parts 32a and 32b to the address signal recording position. The movement distance between them is detected by the position detection circuits 34 and 35, and the displacement amounts R and S are calculated by the displacement amount detection circuit 21.

Then, the divided images detected as in the first embodiment are stored in the frame memories 16, 17 and 18, respectively, and are corrected by the image synthesizing circuit 22 based on the displacement amounts R and S to reconstruct the image. It

As described above, in the image pickup apparatus of this embodiment, the position at which the image is divided is set and stopped by the address signal previously recorded on the magnetic track, and the set number of address signals to be stopped and the actual number are set. A displacement amount including a rotation amount R and a parallel movement amount S of an image obtained by dividing the captured image is obtained from the difference between the number of stopped address signals. When connecting the divided images, the positions are corrected based on this displacement amount, and the images are recombined so that they can be accurately connected.

Therefore, the image pickup apparatus of the present invention uses the position detection method provided separately regardless of the picked-up images, so that the image pickup apparatus can improve the accuracy of the joining position of the images when picking up images as in the conventional case. The original image obtained by highly accurate registration with a simplified configuration, even for images that have a low contrast and could not be connected using correlation without incurring the complexity and cost of such a configuration. Realize the reconfiguration of. In this embodiment, since the address signal as shown in FIG. 8 is used, it is possible to write other information that can be classified as an address signal between the address signals. Further, the present invention is not limited to the above-described embodiments, and it goes without saying that various modifications and applications can be made without departing from the scope of the invention.

[0035]

As described above in detail, according to the present invention, an image pickup apparatus for reconstructing an image with high accuracy by using a position mark provided for detecting the joint position of a plurality of images obtained by divided photographing separately from the image. Can be provided.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of an image pickup apparatus as a first embodiment according to the present invention.

FIG. 2 is a diagram showing a configuration of the photosensitive film shown in FIG.

3 is a diagram showing address signals recorded on a magnetic track shown in FIG. 2;

FIG. 4 is a diagram showing an arrangement (stop position) of divided images obtained by dividing an image pickup area of a film to be imaged.

FIG. 5 is a diagram showing a configuration of an image pickup apparatus as a second embodiment according to the present invention.

6 is a diagram showing a specific structure of the imaging unit shown in FIG.

FIG. 7 is a diagram showing a configuration of an image pickup apparatus as a third embodiment according to the present invention.

8 is a diagram showing an address signal recorded on a magnetic track of the film shown in FIG.

[Explanation of symbols]

1 ... Photosensitive film (film), 2 ... Imaging area, 2
a, 2b, 2c ... Divided image, 3 ... Magnetic track, 4 ... Address signal, 5 ... Controller, 6 ... Motor control circuit,
7 ... Motor, 8 ... Film feeding mechanism, 9a, 9b, 32
a, 32b ... magnetic head, 10 ... light source, 11 ... optical system,
12 ... Solid-state image sensor (CMD), 13 ... Preamplifier, 1
4 ... A / D converter, 15 ... Signal processing circuit (SP), 1
6, 17, 18 ... Frame memory, 19, 20 ... Counting circuit, 21 ... Displacement amount detecting circuit, 22 ... Image synthesizing circuit, 23
... display device, 24 ... printer, 25 ... storage device, 26,
27, 28 ... CCD, 29 ... Half mirror, 30 ... Imaging section, 31 ... Pre-stage image synthesizing circuit, 32a, 32b ... Driving section, 33 ... Position detecting circuit, 34, 35 ... Position detecting circuit.

Claims (1)

[Claims] 1. A film for recording image information and a predetermined address signal in advance, an image pickup means for dividing the image information of the film into predetermined pieces and taking out the divided image information, and a film feed for moving the film to a position where the film should be picked up. Feeding means, detecting means for detecting a desired stop position of the film moved by the film feeding means by the address signal, address signal of the desired stop position detected by the detecting means, and the film feeding means Displacement amount detection means for detecting a displacement amount consisting of a rotation amount and a parallel movement amount from an address signal of the film stop position detected by the stop of the film, and each divided image information extracted by the image pickup means is corrected by the displacement amount. An image reconstructing unit that connects the images, and an image that outputs the image information reconstructed by the image reconstructing unit. An image pickup apparatus comprising: an image information output unit.