JPH08163577A - Film picture reproducing device - Google Patents

Abstract

PURPOSE: To reduce a difference with printing by performing a hue adjustment processing for which color correction data are given priority when both light source information and the color correction data are recorded on a film. CONSTITUTION: After a cartridge is loaded to this device, when the start button of an operation part 3 is pushed, a system controller 40 pulls out the film from the cartridge and reads information recorded on the film. Then, a picture signal processing part 32 fetches CCD pictures, obtains the average value of CCD picture data, compares it with a prescribed reference value and decides an exposure. Then, the controller 40 discriminates the presence/absence of printing information, and when the color correction data are provided in the printing information, performs hue adjustment by the color correction data. Thus, color correction based on the color correction data of the printing information is performed and the difference with the printing is made small.

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 for monitoring an image recorded on a silver salt film on a screen of a television or the like, and in particular, uses shooting information and print information recorded on the silver salt film at the time of shooting. The present invention relates to a film image reproducing apparatus for performing image hue adjustment.

[0002]

2. Description of the Related Art In recent years, a photographic film for recording an image on a film and coding and recording information at the time of shooting and the intention of the photographer on a magnetic recording medium provided on the film surface has been disclosed in Japanese Patent Publication No. This is disclosed in Japanese Patent No. 501016.

A photographic printing method utilizing photometric data at the time of printing together with such information is disclosed in Japanese Patent Laid-Open No. 4-113347.
It is disclosed by the publication.

On the other hand, a film image reproducing apparatus for photoelectrically converting a developed film by an image pickup device and displaying it on a television monitor through a processing circuit is disclosed in JP-A-5-75922 and JP-A-5-75922.
-242385, etc., and some products are commercially available.

Further, as contents to be recorded on the film, in Japanese Patent Publication No. 4-501016 and Japanese Patent Laid-Open No. 4-113347, date, subject brightness (LV value), backlight bias amount (backlight correction amount), flash emission. Presence / absence, subject distance, subject position, lens focal length, highlight / shadow reference instruction,
The color temperature and the like are listed, and it is disclosed that print information including print density correction data, color correction data, print information writing method identification code, and the like is recorded during print processing.

[0006]

In the photographic system using the film and the printer as shown in the above prior art, when the developed film is reproduced on a monitor such as a television using the film image reproducing apparatus, When the developed film is classified according to the presence or absence of shooting information and the presence or absence of print information, there are four combinations as shown in the table below.

[0007]

[Table 1]

In the table, (1) is the case where the above-mentioned system is configured but the information recording system is not used, and (2) the information is recorded by the camera, but the print information is recorded. If not, or if only film development was performed, (3) was taken with a camera without information recording function and printed with a printer with print information recording function, and (4) is This is a case where information is recorded by the camera and print information is further recorded by the printer. Even if the information is recorded in this way, there are cases where only one of the photographing information and the print information is recorded, and where both are recorded.

Further, among the information contents, for example, the color temperature is determined and recorded by the camera side by using the information detected by the camera side. However, the design is required in view of the cost and compactness of the camera. It is expected that the system will not be reliable because it will not be possible to use a high-accuracy system and will make incorrect decisions.

Therefore, information such as color temperature has a different character from other information, and rather than utilizing the information at the time of photographing, the printer utilizes this information while measuring the photometry obtained from the film image. Based on the data, the print information determined by a highly accurate algorithm is expected to be more reliable.

[0011]

SUMMARY OF THE INVENTION According to the present invention, the above-mentioned problem is obtained by picking up the image from a developed film on which images of a plurality of frames and print information for each frame are recorded, and reproducing the picked-up images on a monitor. Therefore, in a film image reproducing apparatus for outputting image data, a reading unit that reads the print information, and an image processing unit that performs a hue adjustment process of an image reproduced on a monitor based on color correction data that is one of the print information. Or an image of a plurality of frames and an image for capturing the image from a developed film on which at least one of shooting information or print information for each frame is recorded and reproducing the captured image on a monitor. In a film image reproducing apparatus for outputting data, reading means for reading the photographing information and the print information,
When either light source information, which is one of the photographing information, or color correction data, which is one of the print information, is recorded, the hue adjustment of the image to be reproduced based on the recorded information. When both the light source information and the color correction data are processed, the image processing means for performing the hue adjustment processing with priority on the color correction data is provided.

[0012]

Embodiments of the present invention will be described in detail with reference to FIGS.

The film and camera used in the present invention are
For example, as disclosed in JP-A-4-113347, the film has a magnetic band outside the photographing screen, and the camera has a magnetic head capable of recording or reproducing photographing information on the magnetic band. have. The recorded contents are as disclosed in JP-A-4-113347 and JP-A-4-501016, and in this embodiment, light source information and shooting year are used as shooting information. The date, shutter speed, aperture, subject brightness, presence / absence of exposure correction, presence / absence of flash, presence / absence of backlight photography, presence / absence of highlight / shadow reference indication, subject distance, focal length, etc. can be magnetically recorded by the camera at the time of photography. As the print information, color correction data, print date, laboratory information, etc. can be magnetically recorded by the printer at the time of printing.

FIG. 1 is an external view of a film image reproducing apparatus.

In the film image reproducing apparatus 1, the cartridge C is loaded in the cartridge loading section 2a of the film feeding section 2.
When it is loaded more and the lid 2b is closed, the film is automatically pulled out, and as will be described later, the image of the film is photoelectrically converted frame by frame and can be viewed on a monitor TV or the like. After that, the film is wound frame by frame. Such film pulling-out means and winding-up means are built in the film feeding section 2, but when a sleeve-shaped developed film not stored in the cartridge C is used, the film feeding section 2
Can be removed. The operation unit 3 can operate the film feeding operation, the inversion of the reproduced image, the magnification, the color, etc., and the output terminal 4 outputs the photoelectrically converted image signal to an external monitor. The monitor may be built in the device.

FIG. 2 is a vertical sectional view of the inside of the film image reproducing apparatus.

On one side of the drawn film F,
A light source lamp 11 which is an illumination system for illuminating the developed image of the film F, a reflecting mirror 12 for reflecting a light beam emitted from the light source lamp 11 to the rear, and a milky white diffusion plate 13 for uniformly illuminating the film F are provided. On the other side, an image pickup optical system 14 which is a zoom lens for picking up an image of the film F is provided.
And a CCD 15 which is a photoelectric conversion element. In this way, the image of the film F is transferred to the CCD 1 by the image pickup optical system 14.
An image is formed on 5 and photoelectrically converted. Needless to say, an infrared cut filter and a low pass filter are provided on the light receiving surface side of the CCD 15. An electric circuit 20 in which various electric circuits are mounted is built in the lower part of the above optical system.

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

An illumination system 21 including a light source lamp 11, a reflecting mirror 12 and a diffusion plate 13 is a system controller 40 including a CPU.
It is driven by the cold cathode fluorescent lamp booster circuit 22 controlled by.

The feeding controller 23 is a system controller 40.
The photographed film F is pulled out from the cartridge C, and the pulled-out film F is fed to a predetermined position. In this embodiment, the control of the film feeding position is performed by an optical detection element (not shown).

The R / W circuit 24 is a system controller 40.
It is driven by a modulation / demodulation circuit 25 controlled by, and reads and writes the photographing information magnetically recorded on the film F.

The CCD 15 photoelectrically converts the film image formed by the image pickup optical system 14 and outputs it as an electric signal.

The AF zoom controller 26 is composed of, for example, a DC motor, drives the image pickup optical system 14 under the control of the system controller 40, changes the lens interval of the image pickup optical system 14 to change the focal length, and Focusing is performed by driving a focusing lens in the image pickup optical system 14.

The diaphragm control unit 27 is composed of, for example, an auto iris, and changes the optical diaphragm 28 under the control of the system controller 40. In the film image reproducing apparatus, since the main subject is a film image, it is a still image, and the variation in the amount of transmitted light is not so large as compared with general subjects, so the light amount is adjusted as a so-called CCD electronic shutter. Good. In this case, the diaphragm control unit 27 may be eliminated and replaced with a fixed diaphragm, and a CCD control circuit may be added to the CCD 15.

Clamp CDS (correlated double sampling) unit 29 for pre-processing and AGC amplifier 30 for pre-amplification
Performs basic analog processing before AD conversion. Further, the AGC reference gain of the pre-stage amplification can be changed under the control of the system controller 40.

The AD converter 31 converts the analog CCD output signal into digital data. The image signal processing unit 32,
Filtering digitized CCD image data,
Video processing such as colorization processing, knee processing, and color conversion processing is performed, and the result is output to the memory controller 33 in the YCrCb format. Further, the image signal processing unit 32 also has a built-in DA converter, which converts the image signal input from the CCD 15 or the image data input in reverse from the memory controller 33 into an analog signal, and outputs the image of the video amplifier 34. It can also be output to a monitor TV or the like through the output terminal 4. These functions are switched by exchanging data with the system controller 40, and the exposure information, focus information, and white balance information of the CCD signal can be output to the system controller 40 as necessary.

In the memory controller 33, the digital image data input from the image signal processing unit 32 is accumulated in the frame memory 37, and conversely, the image data in the frame memory 37 is output to the image signal processing unit 32. The frame memory 37 is an image memory capable of accumulating data of at least one screen, and VRAM, SRAM, DRAM, etc. are generally used, but here, the VRAM capable of operating independently from the bus of the system controller 40 is used. .

The system controller 40 also controls the man-machine interface of the operation unit 3 of the film image reproducing apparatus main body.

Next, a series of operations of the film image reproducing apparatus will be briefly described.

The photographed film F stored in the cartridge C is sent to a predetermined image taking-in position by the feeding control unit 23 of the film feeding unit 2. The image on the film fed to the predetermined image capturing position is illuminated by the illumination system 21 and imaged on the CCD 15 by the imaging optical system 14.

The image signal processing unit 32 receives an image input command from the system controller 40, and receives the CCD 15 and the clamp CDS unit 2
9. The AGC amplifier 30 and the AD converter 31 are operated to receive the image signal of the film F which is the subject. This image signal is subjected to basic video signal processing by the image signal processing unit 32, and then focus information is created from the high frequency component of the brightness data and exposure data is created from the low frequency component.

The system controller 40 reads these data from the image signal processing unit 32, controls the aperture control unit 27 and the AF zoom control unit 26 as necessary, and further controls the gain of the AGC amplifier 30 to ensure proper operation. Converge until you get a good exposure and focus. At this time, an analog image signal is output from the image signal processing unit 32 as an NTSC signal via the video amplifier 34 from the output terminal 4 to an external television monitor or the like.

In this embodiment, an external television monitor is used as the reproducing apparatus, but it goes without saying that a monitor may be built in the main body of the film image reproducing apparatus.

When a signal indicating that a rotation switch for rotating a vertically oriented image to a horizontally oriented image is operated by the operation unit 3 is input, the system controller 40 sends a fetch command to the memory controller 33. Output. With this command, the memory controller 33 detects the synchronization signal from the image signal processing unit 32 and outputs it at a predetermined timing.
Image data in the YCrCb format or the like is taken into the frame memory 37. When the image acquisition to the frame memory 37 is completed,
The memory controller 33 displays the status of the end of capturing, and the system controller 40 reads this status to detect that the image is stored in the frame memory 37.

Thereafter, a rotation command is output from the system controller 40 to the memory controller 33, and the data in the frame memory 37 is changed in the vertical and horizontal directions of the image by changing the reading order of rows and columns, thereby changing the vertical position of the image. It is configured to display the captured image vertically on a TV monitor.

By changing the processing of the image signal processing unit 32 according to the image data of the CCD, the orange mask of the negative film which is different for each manufacturer can be removed or the light source lamp can be removed.
By controlling the shutter of 11, the diaphragm 28 and the CCD 15, it is also possible to improve the film image with an inappropriate exposure.

Next, a basic operation flow of the film image reproducing apparatus used in the present invention will be described with reference to the flowchart of FIG.

After loading the cartridge into the film image reproducing apparatus (101), the start button of the operation section is turned on (102).
Then, the autoloading starts (103), pulls out the film from the cartridge, and winds the film on the take-up reel. The information recorded on the film is read during the film feeding (104). Further, the film feeding is continued, and when the first frame comes to a predetermined position (Y of 105), the film feeding is stopped (106). After that, the illumination system is turned on (107), and the reproduction operation of the first frame is performed (108). This reproduction operation includes a series of display on a television monitor including adjustment of brightness and hue described later.

Further, when the frame feed button of the operation unit is operated (Y at 109), film feeding to the next frame starts (11
0), during this feeding, information is read into the next frame (111). Further, the film feeding is continued, and when the next frame comes to the predetermined position (Y of 112), the film feeding is stopped (113) and the reproducing operation is performed. After repeating this sequence, when the film is finished (Y at 114), the illumination system is turned off (115), the film is rewound (116), and the film is completely wound into the cartridge (Y at 117). ,
Rewinding is stopped (118), and the process ends (119).

Next, the flow of determining the exposure amount and color correction of the CCD based on the print information and the photographing information, which is the gist of the present invention, will be described with reference to the flowchart of FIG. This is included in the reproduction operation 108 of FIG.

In FIG. 5, first, C is calculated from the CCD image data.
The CD exposure condition is determined (201), and the details of this flow will be described with reference to the flowchart shown in FIG.

In FIG. 6, CCD image data is taken in (301), and the total sum of CCD image data in the entire screen or within a specified window is obtained (302). The sum is divided by the number to obtain the average value of the CCD image data (303). When the difference between the preset reference value and its average value is smaller than the predetermined value (Y of 304), the process proceeds to the flow 202 in FIG.
When the difference between the reference value and the average value is larger than the predetermined value (N of 304), the reference value and the average value are compared (305), and when the reference value is smaller than the average value (N of 305) , Narrow the aperture or speed up the CCD electronic shutter (306),
If the reference value is larger than the average value (Y of 305), the aperture is opened more or the CCD electronic shutter is slowed down (3
07). In this way, the deviation from the reference value is corrected by the aperture or the CCD electronic shutter and converges to the reference value.

The CCD image data is represented by digital data of 0 to 255 each having 8 bits, that is, the lower one of the output values is 0, and the average of the output values is obtained by dividing the sum of these numerical values by the number. be able to. For example, the reference value is set to 128, and when the obtained average value is larger than this, the direction of narrowing the aperture or the speed / second of the CCD electronic shutter is controlled to a higher speed side. When the obtained average value is smaller than the reference value, the reverse control is performed so that the reference value is converged.

The above calculation and data exchange are performed between the image signal processing section 32 and the system control 40. The same applies to the following various processes.

Returning to the flow of FIG. 5, the presence / absence of print information is determined (202).

When there is no print information (N of 202) and no photographing light source information (N of 203), white balance adjustment is performed based on the CCD image data (204). First, average values R ₀ , G ₀ , and B ₀ of R, G, and B signal components included in the CCD output on the entire screen or within a specified range are obtained.

That is,

[0048]

[Equation 1]

Is calculated, and using R ₀ , G ₀ , and B ₀ ,
For each pixel,

[0050]

[Equation 2]

The calculation is performed and corrected. This allows white balance adjustment.

The method is not limited to the above, and other known methods may be used.

On the other hand, when it is determined that there is print information (Y in 202), it is determined whether the print information includes color correction data (205). If it is determined that there is color correction data (Y in 205), hue adjustment is performed using the color correction data (206). This will be described with reference to the flowchart shown in FIG.

In FIG. 7, the color correction data of the print information is -4 to N for each of Y, M, and C, for example.
If it is a numerical value of ~ 4, the coefficient of each RGB component with respect to this numerical value is obtained in advance by experiments,
The color key input of the printer can be converted into a ratio for each of R, G, and B colors. In other words, this is the ratio of R, G, and B colors that can be displayed on the print. This converted R,
The amounts of G and B components are R ₁ , G ₁ and B ₁ (301).

Next, the matrix M, M ', M "for each film type, which has been obtained in advance by the experiment, is selected (302), and R ₀ , G ₀ , B ₀ are calculated by the selected matrix (303). ), And using R ₀ , G ₀ , and B ₀ , the following equation is calculated and corrected (304).

[0056]

(Equation 3)

As a result, the color correction of the display image can be performed based on the color correction data of the print information.

Although a matrix is prepared for each film type, one matrix may be used as a substitute for averaging.

It is also possible to prepare a matrix corresponding to a specific function key of the printer.

As described above, based on the correction amount data obtained by the printer, the film image reproducing apparatus can automatically improve the color balance loss and the color failure caused by different light sources. That is, by using the print information of the printer, it is possible to use the highly reliable information determined by the algorithm with higher accuracy than the shooting information in the film image reproducing device,
Bride and groom in a folding screen at the reception, people on the lawn, under fluorescent lights,
It is possible to easily and properly reproduce an object to be subjected to various corrections such as under tungsten light without providing a highly accurate determination algorithm in the film image reproducing apparatus.

On the other hand, when there is no color correction data in the print information (N in 205), it is determined whether or not there is photographic light source information (203), and when there is photographic light source information (Y in 203), the photographer's intention It is determined whether or not there is a color correction instruction in the shooting information (207), and if there is a color correction instruction (Y of 207), the flow proceeds to flow 204 and the same processing as described above is performed.

When there is no color correction instruction (N in 207), hue adjustment is performed according to the photographing light source information (208). This is shown in FIG.
It will be described with reference to the flowchart shown in FIG.

First, in the same manner as the mathematical expression, average values R ₀ , G ₀ and B ₀ of the R, G and B signal components included in the CCD output are obtained (311). Next, the correction coefficient previously obtained in the experiment is selected from the light source information (312). This depends on the color temperature of the light source, and β _R >1> β _B when the color temperature of the tungsten light is low, and β _R <1 <β _B when the color temperature of the light source is low. Is a coefficient with. The average values R ₀ , G ₀ , and B ₀ are corrected by this coefficient (313), and the obtained R
_A correction calculation is performed for each pixel using ₀ ′ and B ₀ ′ (31
Four).

As described above, the atmosphere can be reproduced according to the color temperature of the light source. That is, when there is no print information, natural reproduction is possible in an atmosphere matched to the color temperature of the light source by the light source information of the shooting information.

[0065]

According to the first or second aspect of the present invention, the hue adjustment is performed by preferentially using the more reliable print information used at the printing among the information recorded on the film. Therefore, the difference from the print can be minimized.

Further, the film image reproducing apparatus does not require a sophisticated algorithm such as that mounted in a printer,
You can easily reproduce the atmosphere that matches the light source.

[Brief description of drawings]

FIG. 1 is an external view of a film image reproducing apparatus.

FIG. 2 is a sectional view of the inside of the film image reproducing apparatus.

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

FIG. 4 is a flowchart of a basic operation of the film image reproducing apparatus.

FIG. 5 is a flowchart for determining a CCD exposure amount and color correction based on shooting information and print information.

FIG. 6 is a flowchart for determining CCD exposure conditions from CCD image data.

FIG. 7 is a flowchart for performing hue adjustment based on color correction data.

FIG. 8 is a flowchart for performing hue adjustment based on photographing light source information.

[Explanation of symbols]

 C Cartridge F film 3 Operation part 14 Imaging optical system 15 CCD 21 Illumination system 24 R / W circuit 32 Image signal processing part 33 Memory controller 37 Frame memory 40 System controller

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Seiichi Isoguchi 2970 Ishikawa-cho, Hachioji-shi, Tokyo Konica Stock Company

Claims (2)

[Claims] 1. An image of a plurality of frames and print information for each frame are recorded on the developed image,
In a film image reproducing apparatus for outputting image data to reproduce a captured image on a monitor, a reading unit for reading the print information and a hue of the image reproduced on the monitor based on color correction data which is one of the print information. A film image reproducing apparatus comprising: an image processing unit that performs adjustment processing. 2. An image of a plurality of frames, and image data for reproducing the captured image on a monitor by capturing the image from a developed film on which at least either photographing information or print information for each frame is recorded. In the film image reproducing apparatus for outputting, one of the reading means for reading the shooting information and the print information, the light source information which is one of the shooting information, or the color correction data which is one of the print information is provided. When recorded, the hue adjustment processing of the image to be reproduced is performed based on the recorded information, and when both the light source information and the color correction data are recorded, the color correction data has priority. And an image processing means for performing a hue adjustment process.