JP2955379B2 - Image processing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved image processing method applied to obtain a proper print corresponding to a light source at the time of photographing from a photosensitive material photographed by a camera.

[0002]

2. Description of the Related Art Conventionally, prior to applying a developed photographic material to a printer, a skilled operator performs image determination such as image density and color tone to correct exposure and color. Whether a strobe or a flash is used for photographing is determined by visual judgment by an operator at the time of image determination, and a correction amount at the time of image exposure is determined.

[0003]

A photograph is greatly influenced by a light source applied to photographing, and has a finish that is far from an impression seen by a human. The main reason is that the photosensitive material for general photography is white light as daylight or natural light, and is made for light with high color temperature and good color balance, so if other light sources are applied , Respectively, the color development due to the special light component is emphasized. And, as for the printing photographic paper, since each manufacturer has applied the correction that makes it possible to obtain a good print by best fitting to its own photographic photosensitive material, the difference in the light source at the time of shooting remains or is emphasized Will appear.

As described above, since the finish of a photograph is greatly affected by the light source applied at the time of photographing, it is necessary to limit the light source for photographing or to expect image judgment by a skilled operator to be performed prior to printing. Did not.

SUMMARY OF THE INVENTION In view of the above, the present invention provides a method for exposing a photographic photosensitive material in which an image photographed using a strobe or a flash and an image photographed without using the same are mixed with an appropriate exposure amount or color correction amount. It is an object of the present invention to clarify an improved image processing method used to obtain a proper print.

[0006]

Next, the present invention will be described in more detail with reference to the embodiments shown in the accompanying drawings.

FIG. 1 is a flow chart showing the method of the present invention.
The information that the strobe or the flash 2 has been used (hereinafter, abbreviated as flash information in this specification) is recorded. As a method for recording flash information, a magnetic method is employed. In this magnetic system, a transparent magnetic layer is provided on the back side of the photographic photosensitive material 1 to perform magnetic recording.

In the case of the magnetic recording according to the present invention, the automatic developing machine is not involved in the expression of flash information, but in the case of optical recording as a comparative example, the image surface of the photographic photosensitive material 1 is developed by the automatic developing machine. The recording 5 of the flash information located outside of 4 is visualized. Record 5 visualized
Are transparent or translucent parts which are clearly distinguished from the surrounding unexposed emulsion parts. When the photographic light-sensitive material 1 thus processed is set in the image determination device, the sensor 6 detects the light of the light-emitting element 7 passing through the recording 5, and a strobe or a flash is used for the image photographing. That is, get the flash information,
This information is input to an image determination device or a control circuit of a printer, and a programmed exposure or color correction amount is calculated. It is preferable that the presence or absence of flash information is also displayed on the CRT screen of the image determination device. A method in which the operator corrects the amount of exposure or color based on the visual inspection of the display is also included in the present invention.

When the flash information is the magnetic recording according to the present invention, the information is substantially the same as that of the optical type except that the information detecting means is different (it becomes the magnetic detecting means).

On the other hand, in the printer, exposure is performed under the optimal exposure condition corrected by the flash information, and the best print 8 is obtained.

FIG. 2 shows an example of a means for recording flash information in a camera. That is, when the photographic photosensitive material 1 is in the exposure position and is positioned in contact with the back plate 9, the light is emitted from an LED or the like in a state in which light is not leaked by the light shielding material 11 close to the mask plate 10. The element 3 is arranged. The light-emitting element 3 emits light when the electric circuit 12 that operates the flash 2 is turned on.

In the case of the magnetic recording according to the present invention, the back plate 9
Or, a magnetic head is arranged in a part of the mask 10 and
When the electric circuit 12 for operating the flash 2 is turned on, an electric signal flows for a certain period of time, and the flash information is recorded on a specific track of the transparent magnetic layer.

The flash information to be recorded at which part of the camera and at what stage is not limited to the above embodiment. That is, the flash information does not need to be recorded at the same time as the photographing, and whether or not the image portion has been photographed using the flash may be recorded for each image frame. It is sufficient that the flash information is recorded in a portion where the corresponding image frame can be specified until the winding is completed. Further, the light emitting element 3 may be incorporated in the take-up spool, and may be recorded as a group of flash information separately from the image frames.

A difficulty in applying the method of the present invention is that the camera itself must have a means for recording flash information. Therefore, there is a drawback that cannot be applied to a camera having no flash information recording means as shown in FIG. Therefore, in such a camera, it is necessary to add a flash information recording unit as an option. However, recent cameras are designed to be very compact and have little extra space, but a part of or around the mask plate 10, a part of the back plate 9, a sprocket gear for film winding. There is a small space available in the periphery of the camera, and light emitting elements such as LEDs are arranged in these parts, for example, lead from a part of the lead wire from the flash control circuit inside the camera to the hot shoe to the LED If the camera has a sufficient capacity to connect the lines, a flash information recording unit can be added as an option.

The same applies to a camera with a built-in strobe.

The present invention also includes a method of recording flash information by detecting flash light that has entered the camera through a lens after being reflected by a subject.

[0017]

According to the method of the present invention, flash information is recorded as magnetic recording for each image frame, and flash information can be obtained simply by setting a photographic photosensitive material that has been developed in an image determination device or printer. Since the output is output, correction of the determined image density information or the like can be performed automatically or easily by an operator's operation. The printer performs automatic exposure and development processing under the corrected exposure conditions. Can be performed, and the problem described above is solved.

[Brief description of the drawings]

FIG. 1 is a flowchart illustrating the method of the present invention.

FIG. 2 is a schematic diagram showing a flash information recording unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Photosensitive material 2 Strobe, flash 3 Light emitting element 4 Image (frame) 5 Recording of flash information 6 Light receiving element 7 Light emitting element 8 Print 9 Back plate 10 Mask plate 11 Light shielding member 12 Electric circuit

Claims (1)

(57) [Claims] 1. An image processing method for recording flash information for each image frame of a photographic material at the time of photographing, detecting the flash information with an image determination device or a printer, and correcting exposure conditions . On the back side of the photographic material
A transparent magnetic layer is provided, and the flash
An image processing method comprising magnetically recording menu information .