JPH08237546A - Film image reproducing device - Google Patents

Abstract

PURPOSE: To reproduce an image with high picture quality by reproducing the image while setting the photographic magnification of a photographic optical means at a prescribed magnification and moving a film corresponding to the photographic aspect ratio information of photographic information for each frame read by an information reading means. CONSTITUTION: The film is fed to a prescribed image fetching position by a feed driving part 76 of a film feeding part 20. The image on the fed film is formed on a CCD 82 by an illuminated zoom lens 61. Besides, an image pickup signal processing part 86 receives an image input instruction from a CPU 84 and receives the CCD image by operating a preprocess part 33 and an A/D converting part 85. Video signal processing is performed at the processing part 86, focus information is prepared from the high frequency component of luminance data and exposure data are prepared from the low frequency component. At a controller 84, these data are read from the processing part 84, gain control is performed to a diaphragm drive 74, focus driving part 75 and further the AGC amplifier of the process part 83 at need and this control is continued until proper exposure or focus is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film image reproducing apparatus, and more particularly to a film image reproducing apparatus for reproducing an image of a film photographed by a camera which records photographing information of each frame on a recording medium at the time of photographing.

[0002]

2. Description of the Related Art Conventionally, as a device for reproducing a film image, a film reproducing device is known which reproduces an image obtained by forming image information of a film by an optical system and converting it into an electric signal by a solid-state image pickup device. For example, an image of a developed film is converted into an electric signal by a solid-state image sensor or the like, and a monitor TV
There is a film image reproducing apparatus for reproducing and viewing with a film etc. Further, there is disclosed a film image reproducing apparatus for recording zoom information and scan information (also referred to as trimming) at the time of photographing on a film and reading and controlling the information (see Japanese Patent Laid-Open No. 5-75922). The solid-state image sensor used in these devices and the like has a 3: 4 aspect ratio because it is cheaper than a special size because of its relationship with a television. Further, there is disclosed a camera in which the upper and lower sides or the right and left sides of a predetermined aspect ratio of a film shooting screen are cut to change the aspect ratio and the aspect ratio is written as magnetic information of the film (Japanese Patent Laid-Open No. 6-208164). ).

FIG. 11 is an explanatory diagram of the aspect ratio. The figure shows the aspect ratio described in JP-A-6-208164.
FIG. 11 (A) uses the entire area of the film and is called H size, and the aspect ratio is h: ω = 9: 16. Further, in FIG. 11B, a part of the left and right sides of the H size is cut and is called an L size, and the aspect ratio is h:
ω '= 2: 3. Further, in FIG. 11C, a part of the upper and lower parts of the H size film is cut, which is referred to as the P size, and the aspect ratio is h ': ω = 1: 2.7.

On the other hand, since the image pickup device in the film image reproducing apparatus generally has an aspect ratio of 3: 4 in relation to the television, the above three H, L and P sizes have aspect ratios of 3; 4. Images are formed on the image sensor as shown in FIGS. 12 and 13.

FIG. 12 is a diagram showing the relationship between the size of the image pickup device and the size of the screen. In the H size of FIG. 12A, the short side h of the H size is scaled so as to match the short side of the image pickup element. In the H size, the left and right sides of the film are projected. Similarly, in FIG. 6B, the short side h of L size is made to coincide with the short side of the image sensor. In FIG. 6C, the size is P, and the upper and lower sides of the image sensor are wasted and the left and right sides of the film protrude.

FIG. 13 is a diagram showing the relationship between the size of the image pickup device and the size of the image pickup screen. When the long side of the H size is aligned with the long side of the image sensor, the entire screen can be imaged in the H size in FIG. 13A, but the upper and lower parts of the image sensor are wasted,
Only about 80% of the total number of pixels of the image sensor is used. In addition, the utilization rate is about 6 for the L size in Fig. 13 (B).
On the other hand, in FIG. 13 (C), the size is P, and the utilization factor is about 50%, which is very inefficient, which causes the deterioration of the image quality of the display image.

[0007]

However, there is a problem as described with reference to FIGS. 12 and 13 described above, and in addition to the system described in JP-A-6-208164, a 35 mm film is used for 24 mm × 36mm (2: 3), 20mm x 36mm
There is an aspect ratio of (9:16), 13 mm x 36 mm (1: 2.7), but there is a similar problem.

The present invention has been made in view of the above problems, and an object of the present invention is to obtain a film image reproducing apparatus for reproducing an image of each aspect ratio of a developed film with higher image quality.

[0009]

The above object can be achieved by the following means. That is, (1) in a film image reproducing apparatus for picking up a developed film on which an image consisting of a plurality of frames and shooting information for each frame is recorded, information reading means for reading the shooting information for each frame of the film, Imaging optical means capable of changing the imaging magnification, magnification control means for setting the imaging magnification to a predetermined magnification, image reading means for reading the image of the film, film supplying means for supplying the film, the film and the imaging A relative movement amount detecting means for detecting a relative movement amount in the long side direction of the film of the optical axis of the optical system, and according to the photographing aspect ratio information of the photographing information of each frame read by the information reading means, The photographing magnification of the image pickup optical means is set to a predetermined magnification, and the film or the photographing optical system and the photographing element is moved while moving in the long side direction of the film for reproduction. (2) In a film image reproducing apparatus for capturing an image of a developed film on which an image composed of a plurality of frames and photographing information for each frame are recorded, the photographing information for each frame of the film is recorded. Information reading means for reading, imaging optical means capable of changing the imaging magnification, magnification control means for setting the imaging magnification to a predetermined magnification, image reading means for reading the image of the film, and film supply means for supplying the film A relative movement amount detecting means for detecting a relative movement amount in the long side direction of the film and the optical axis of the optical axis of the image pickup optical system; a stop control means for stopping at a predetermined relative movement amount; and a plurality of frame memory means. And the image pickup magnification of the image pickup optical system is set to a predetermined magnification according to the shooting aspect ratio information of the shooting information for each frame read by the information reading means, Film or film image reproduction characterized by moving the image pickup optical system and the image pickup element to a plurality of positions in the long side direction of the film and stopping the film, and reproducing after capturing one frame of image by a plurality of exposures. It is a device.

[0010]

Embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1) FIG. 1 is a schematic perspective view of the film image reproducing apparatus of the present invention. The apparatus main body 10 is the main body of the film image reproducing apparatus, and the operating section 35 is an operating section for performing various operations. The illumination system unit 50 is an illumination unit that illuminates the film.
The image forming optical system unit 60 is an optical system that forms an image of a film on a CCD. The feeding unit 20 is a feeding unit that feeds the developed film contained in the cartridge 98, and further has a function of pulling out the film from the cartridge, winding the pulled-out film, and rewinding.

FIG. 2 shows a partial internal structure of the film image reproducing apparatus shown in FIG. 1. The illumination system section 50 includes an illumination lamp 51 for illuminating the film, a reflecting mirror 52 for reflecting the lamp light, and It is composed of a milky white diffusion plate 53 that diffuses light. Further, the film forming optical system 60 has a zoom lens 61 of the image forming optical system for picking up an image of the film and an infrared cut filter and a low pass filter on the light receiving surface side.
CCD 82 is provided. Further, an electric circuit block 80 in which various electric circuits are mounted is built in.

FIG. 3 shows a block diagram of an electric circuit of the film image reproducing apparatus. The individual blocks will be described. The illumination system unit 50 is a cold cathode tube or the like, and is driven by the cold cathode tube booster circuit 78 controlled by the system controller 84. The feeding drive unit 76 is a system controller 84.
Is controlled so that the developed film is pulled out from the cartridge and the pulled-out film is supplied to a predetermined position. In this embodiment, the control of the feeding position at the feeding position is performed by an optical detection element (not shown). The magnetic information reading / writing unit 77 is driven by the modulation / demodulation circuit 79 controlled by the system controller 84, and reads and writes the magnetic information recorded on the developed film. The CCD 82 photoelectrically converts the film image formed on the image pickup device by the optical zoom lens 61 and outputs it as an electric signal.

The preprocessing unit 83 performs basic analog processing before AD conversion such as clamping, correlated double sample (CDS) 831 and pre-stage amplification having an AGC function 832. Further, the AGC reference gain of the pre-stage amplification can be changed under the control of the system controller 84.

The AD converter 85 converts an analog CCD output signal into digital data. Also, the image signal processing unit
86 performs video processing such as filter processing, colorization processing, knee processing, and color conversion processing on the digitized CCD image data, and outputs it to the memory controller 87 in the YCrCb format. On the other hand, the video signal processing unit 86 also has a built-in DA converter, which converts the video signal input from the CCD and the image data input in reverse from the memory controller 87 into an analog signal and outputs the image from the video amplifier 88. It can also be output to a monitor TV or the like through the output terminal 89.
These functions are switched by exchanging data with the system controller 84, and if necessary, the exposure information, focus information, and white balance information of the CCD signal can be output to the system controller 84. The memory controller 87 accumulates the digital image data input from the video signal processing unit 86 in the frame memory 70, and conversely outputs the image data in the frame memory 70 to the video signal processing unit 86. The frame memory unit 70 is an image memory, and VRAM, SRAM, DRAM or the like is generally used. Here, the VRA capable of operating independently of the CPU bus is used.
I am using M. Also, this memory may be shared with the system memory. The diaphragm driving unit 74 is composed of, for example, an auto iris, and changes the optical diaphragm value under the control of the system controller 84. The focus drive unit 75 is composed of, for example, a stepping motor, and is for controlling the system controller 84 to change the lens position and focus on the film.
The developed film stored in the cartridge is sent to a predetermined image capturing position by the feeding drive unit 76 of the film feeding unit 20. The film movement amount detection unit 44 detects the movement amount of the film. The image on the film fed to the predetermined image capturing position is illuminated by the illumination system section 50 and is imaged on the CCD 82 of the image pickup element section by the zoom lens 61. Further, the image pickup signal processing unit 86 receives an image input command from the system controller 84, and receives the image pickup device unit 82, the preprocessing unit 33,
The AD conversion unit 85 is operated to receive the CCD image of the film. The image signal processing unit 86 receives the CCD image data.
After performing basic video signal processing in step 1, focus information is created from the high frequency components of the brightness data, and exposure data is created from the low frequency components. The system controller 84 reads these data from the video signal processing unit 86 and controls the gain of the diaphragm drive 74, the focus drive unit 75, and the AGC amplifier of the pre-process unit 83 as necessary to obtain proper exposure and focus. Converge until you get it. At this time, the analog image signal is output from the video signal processing unit 86 as an NTSC signal to an external monitor TV or the like. In this embodiment, an external monitor TV is used as the reproducing device, but a monitor may be built in the film image reproducing device. In the system controller 84, the processing of the video signal processing unit 86 is changed based on the color information of the film to remove the orange mask peculiar to the film which is different for each manufacturer, the diaphragm 81, or the CCD.
The shutter can be controlled to improve the image taken with an improper exposure.

FIG. 4 shows a schematic inclined view of the film supply section. The cartridge 98 is a cartridge containing a developed film, the film 90 is a roll-shaped film, the photo reflector 41 is a reflector for detecting this perforation 90, the track 92 is a track of magnetic information, and the reading / writing section. The read / write head 42 of 40 is a read / write head for this magnetic information, and 43 is a pad.

The supply motor 25 rotates the cartridge spool 27 via the gear train 26 to wind the film in the cartridge 98. Further, the roller 31 of the counter section 30 is a rotating disk 32 having a transparent and opaque section which rotates by engaging with the roller 31 which rotates with the movement of the film.
A photo interrupter 33 is arranged across the rotary disk 32, and the feeding control for one frame of the film is performed by the photo reflector 41 and the perforation 91. The amount of movement of the film is configured to be detected by the photo interrupter 33.

Here, what is described in claim 1 of the present invention will be described with reference to the flowcharts of the embodiments of FIGS. 5 and 6.

First, when the cartridge is loaded and the start button is turned on, the autoloading starts and after reading the information of the first frame, the photoreflector 41 detects the specified perforation 91 of the first frame. Stop feeding. At this time, the center of the film screen and the optical axis of the image pickup optical system are substantially aligned. Further, the illumination system is turned on, and the process proceeds to the flowchart of FIG. First, the aspect ratio is confirmed from the read magnetic information. If it is not P size, the magnification is 0.21 times, and if it is P size, the magnification is 0.33 times. The magnification is determined as follows. Assuming that the H size screen is 17 mm x 30 mm (9:16), the CCD of the image sensor is 1/3 inch and the imager size is 3.6 mm x
The size is 4.8 mm and the magnification to match the short side of the film with the CCD short side is 0.21 times, and the P size is 11 mm x 30 mm.
Assuming (1: 2.7), 0 to match the short side direction.
33 times. That is, this magnification is determined by the film size and the CCD size, and the numerical values of the present invention are given as an example. Furthermore, after this gain setting, a known gain adjustment (iris control) and color balance adjustment are performed, and then the image is displayed. Further, the aspect ratio is confirmed again, and whether or not the movement in the long side direction is possible and the movement amount are selected. First, when the aspect ratio is P size, for example ± 7 from the screen center.
The film is slightly moved back and forth in the long side direction by 67 mm. The movement amount is detected by the photo interrupter 41 described with reference to FIG. 4, and the driving is performed by the supply system. This reciprocating supply is continued until the next frame feed button is operated, and the reciprocating motion is stopped by this frame feed operation, and control is returned to the center of the screen. This is performed by the information of the photo interrupter 33 and the information of the photo reflector 41, and is for facilitating the reading of the information of the next frame.

On the other hand, when the aspect ratio is H size, the film is slightly reciprocated in the long side direction by ± 3.67 mm from the screen center. The subsequent steps are the same as for the P size. After this, the process returns to "B" in the flowchart of FIG.

When the aspect ratio is L size, the film may remain stationary, and the process returns to "B" in the flowchart of FIG. In the flow chart, the reciprocation is performed until the frame feed button is operated, but a time limit may be added. Further, it may be stopped by one round trip. In addition, the movement amount is the above-mentioned film size, optical system magnification, CC
The size is set so that the image on the side of the long side of the film image can be taken in rather than the D size, and the setting may be determined according to the specifications.

As a result, in the case of the H size, the state shown in FIG. 12A is obtained, and the film image protruding to the left and right can be displayed on the reproduction screen by the reciprocating motion of the film. When the size is L, the state shown in FIG. Further, in the case of P size, it becomes as follows.

FIG. 7 is an explanation of the relationship between the P size and the CCD size. In the P size ABCD, the magnification is changed to C
The direction of the short side coincides with the CD size A'B'C'D ', the left and right protrusions can be reproduced by the reciprocating motion of the film, and all CCD pixels can be used. As a result, it is possible to prevent the above-described decrease in CCD utilization efficiency, and it is possible to obtain a reproduced image of high quality even in the P size. Further, in this method, the scroll display state is automatically set.

Regarding the vertical position screen, a known TV
The monitor etc. are rotatably supported, and the monitor side makes corrections. Note that the image pickup optical system and the CCD may be integrally reciprocated in the long side direction instead of the reciprocal movement of the film.
After returning to B, feeding the next piece and writing information. The above-described operation of FIG. 6 is performed, and the process is repeated until the film is finished. When the film is finished, the illumination system is turned off and the film is rewound into the cartridge to finish.

(Embodiment 2) Next, an embodiment described in claim 2 of the present invention will be described.

FIG. 8 is a block diagram of an electric circuit and is shown in FIG.
Explaining the point different from the above, a frame memory M1 71, a frame memory M2 72, and a frame memory M3 73 are added and connected to a memory controller 87, respectively. The operation flowchart is shown in the above-mentioned FIG. 5 and the above-mentioned FIG. 9, and the parts different from the above-mentioned FIG. 6 will be described.

FIG. 9 is a flowchart of the embodiment. In the same manner, the magnification is selected according to the aspest ratio, and after the gain adjustment and the color balance adjustment, when the aspect ratio is P size, first, the center of the screen is displayed. The image is captured and stored in the frame memory M1. Furthermore, the film is 7.67mm as described above.
Rewind and stop, and store the image in frame memory M2 again. Next, 7.67mm on the opposite side of the screen center, that is, as the amount of movement, wind up 2 × 7.67mm and stop it.
The image is stored in the frame memory M3.

A memory controller creates one screen from the three screen information excluding the overlapping portion and stores it in the frame memory 70. On the other hand, the film is returned to the screen center. That is, the image in the central portion of FIG. 7 is stored in the frame memory M1, and the protruding portions on both sides are moved to the frame memories M2 and M3 respectively to form one screen to form the frame memory M1.
Store in o.

On the other hand, when the aspect ratio is H size, the film is first rewound by 3.37 mm and stopped, and the image is stored in the frame memory M1. Furthermore, 3.67 mm on the opposite side of the screen center, that is, the movement amount is 2 x 3.67
mm is rolled up and stopped, and the image is stored in the frame memory M2.
To memory. The images of these two screens are created by the memory controller except for the overlapping part, and one screen is created and stored in the frame memory Mo. Similarly, return the film to the screen center. This is to facilitate detection of the next frame and reading of information.

When the aspect ratio is L size, only the image of the screen sensor is required. With this, one screen image for each size can be stored in 70 of the frame memory Mo. After that, the reading order from the frame memory Mo 70 by the information of the vertical / horizontal changeover switch (SW) of the operation unit (not shown). To be displayed on the monitor TV or the like. With this method, the image for one screen is stored in the memory.
In addition to the above-mentioned advantages, unlike the method of FIG. 7, it is possible to reduce one frame of film for display on the monitor TV or select scroll display. At the same time, the vertical / horizontal conversion can be easily performed.

Next, another embodiment will be described.

FIG. 10 is a flowchart of another embodiment, which is a film image reproducing apparatus in which the frame memory M3 73 is omitted. This is different from FIG. 9 described above only in the case of P size. Explaining only the difference, in FIG. 9, one screen is formed by exposing three times in the central part of the P size, the left part and the right part. Is divided into left and right, and the film movement amount is set so that the left end and the right end are not captured. If the screen of the film is judged to be P size, the film is 7.33mm
Rewinding is stopped and the image is stored in the frame memory M1. In addition, 7.33m in the opposite direction from the screen center
m, that is, the moving amount is 2 × 7.33 mm, the winding is stopped, and the image is stored in the frame memory M2. The two images stored in the frame memory M1 and the frame memory M2 are combined into one screen by the memory controller and stored in 70 of the frame memory Mo. As a result, the small portions at the left and right ends of the P size screen cannot be reproduced, but can be ignored. Note that the above value of 7.33 mm is a case where the image is accurately divided at the P size image center, and may be set to a small value for safety and the overlapping portion may be omitted to form one screen. This can reduce the memory.

[0033]

The above-mentioned structure has the following effects.

According to the first and second aspects, the CCD pixels can be effectively used for the film screen sizes of various aspect ratios, and the film image can be reproduced with high image quality.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a film image reproducing apparatus of the present invention.

FIG. 2 is a partial internal configuration diagram of the film image reproducing apparatus of FIG.

FIG. 3 is a block diagram of an electric circuit of the film image reproducing apparatus.

FIG. 4 is a schematic perspective view of a film feeding unit.

FIG. 5 is a flowchart of an example.

FIG. 6 is a flowchart of an example.

FIG. 7 is a diagram illustrating the relationship between P size and CCD size.

FIG. 8 is a block diagram of an electric circuit.

FIG. 9 is a flowchart of an example.

FIG. 10 is a flow chart of another embodiment.

FIG. 11 is an explanatory diagram of an aspect ratio.

FIG. 12 is a diagram showing the relationship between the size of the image sensor and the size of the screen.

FIG. 13 is a relationship diagram between the size of an image sensor and the size of a captured image.

[Explanation of symbols]

 10 Device body 20 Feed unit 25 Supply motor 26 Gear train 27 Cartridge spool 30 Counter unit 31 Roller 32 Rotating disk 33 Photo interrupter 35 Operation unit 36 Operation switch 40 Read / write detection unit 41 Photoreflector 42 Read / write head 43 Pad 44 Film movement amount Detection unit 50 Illumination system unit 51 Illumination lamp 52 Reflector 53 Diffuser plate 60 Imaging optical system unit 61 Zoom lens 70 Frame memory 71 Frame memory M1 72 Frame memory M2 73 Frame memory M3 74 Aperture drive unit 75 Focus drive unit 76 Supply Sending / driving unit 77 Magnetic information reading / writing unit 78 Cold cathode tube booster circuit 79 Modulator / demodulator circuit 80 Electrical circuit block 81 Aperture 82 CCD 83 Preprocess 831 Correlation double sample 832 AGC 84 System controller 85 AD converter 86 Video signal processor 87 Memory Controller 88 Video amplifier 89 Video output 90 Film 91 Perforation N 92 track 98 cartridge

Claims (2)

[Claims] 1. A film image reproducing apparatus for capturing an image of a developed film on which an image composed of a plurality of frames and shooting information for each frame are recorded, and information reading means for reading the shooting information for each frame of the film. Imaging optical means capable of changing the imaging magnification, magnification control means for setting the imaging magnification to a predetermined magnification, image reading means for reading the image of the film, film supplying means for supplying the film, the film and the imaging A relative movement amount detecting means for detecting a relative movement amount in the long side direction of the film of the optical axis of the optical system, and according to the photographing aspect ratio information of the photographing information of each frame read by the information reading means, The photographing magnification of the image pickup optical means is set to a predetermined magnification, and the film or the photographing optical system and the photographing element is moved while moving in the long side direction of the film for reproduction. Film image playback device. 2. A film image reproducing apparatus for capturing an image of a developed film on which an image composed of a plurality of frames and shooting information for each frame are recorded, and information reading means for reading the shooting information for each frame of the film. Imaging optical means capable of changing the imaging magnification, magnification control means for setting the imaging magnification to a predetermined magnification, image reading means for reading the image of the film, film supplying means for supplying the film, the film and the imaging The information reading comprises: a relative movement amount detecting means for detecting a relative movement amount of the optical axis of the optical system in the long side direction of the film; a stop control means for stopping at a predetermined relative movement amount; and a plurality of frame memory means. The image pickup magnification of the image pickup optical system is set to a predetermined magnification according to the photographing aspect ratio information of the photographing information of each frame read by the means, A film image reproducing apparatus characterized in that the system and the image pickup device are moved to a plurality of positions in the long side direction of the film and stopped, and an image of one frame is captured by a plurality of exposures and then reproduced.