JPH0511349A - Peripheral distortion correcting and printing device - Google Patents

Abstract

PURPOSE:To obtain a photograph having no peripheral distortions by executing printing in accordance with the information on correction of the peripheral distortions and to obtain the natural photograph even when the printing to a large size is executed. CONSTITUTION:An operation inhibiting means which inhibits the operation of a peripheral distortion correcting means when the print size is large is provided in a control means which operates the peripheral distortion correcting means 63 in accordance with the information on the correction of the peripheral distortions when this information is read by a reading means 65. A correcting means which adds a correction to the information on the correction of the peripheral distortion read by the reading means when the print size is large is also provided in the control means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a peripheral distortion correction printing apparatus for performing a printing operation according to peripheral distortion correction information recorded on a film surface by a camera.

[0002]

2. Description of the Related Art Conventional cameras are designed to faithfully capture the plane of a subject onto the plane of film. Therefore,
When the subject at this time is a person, the subject is not a flat surface but a solid body, so that, for example, a print in which the faces of people in the vicinity are stretched is made in the group photograph. This will be described with reference to FIGS. 10 and 11.

In these drawings, reference numeral 1 denotes a photographing lens of a camera, which exposes an image as a latent image on a film surface 2 at an angle of view α. At this time, in the case of the subject 3 having a depth, the image viewed from the taking lens 1 is observed as the surface L. However, since the image is recorded on the film surface 2 as a flat surface, an image can be formed parallel to the surface M during printing. Then, the plane L is projected onto the plane M, and the image becomes "1 / cos (α /
2) ”will be doubled.

Further, if this image is observed at the angle of view β, the observer will see it by a factor of "cos β / 2". If α = β, the observed image will not be distorted, but the print size will be small. Since the clear viewing distance is not short, the print 4 is observed at an angle of view of β (where β <α) as shown in FIG. Therefore, the observer will see the image at "cos β / 2" times (M '
The surface is viewed as the L ′ surface), and the total is “(cos β / 2) /
(Cos α / 2) ”times, resulting in observing a distorted image.

Therefore, in order to solve the above problem, a means for recording the peripheral correction information on the film surface is provided, and when the main subject is located in the periphery of the screen, the means is driven and the correction information is printed at the time of printing. The same application was filed on the same day for a camera that can be used to obtain a photograph without distortion in the periphery.

[0006]

However, in normal simultaneous printing, most of the print sizes are L size or E size. Therefore, the camera records the peripheral correction information on the film surface based on this size. Therefore, when the user requests that a certain piece be expanded to a large print after that, if the printing apparatus expands the piece according to the peripheral distortion correction information, it seems that the person in the vicinity is compressed during observation. There was a problem that it became.

In view of the above points, an object of the present invention is to print not only a picture without peripheral distortion but also a large print, according to the peripheral distortion correction information.
It is an object of the present invention to provide a peripheral distortion correction printing device capable of obtaining a natural photograph.

[0008]

According to the present invention, when the peripheral distortion correction information is read by the reading means, the control means for operating the peripheral distortion correction means in accordance with the information, when the print size is large, is printed. An operation prohibiting unit for prohibiting the operation of the peripheral distortion correcting unit is provided, and a correcting unit for correcting the peripheral distortion correcting information read by the reading unit is provided in the control unit when the print size is large. There is.

[0009]

When the print size is a large print, it is rather unnatural to use the peripheral distortion correction information recorded by the camera based on the popular size. Was not recorded, or with the addition of a correction,
It is designed to print.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing a schematic structure of a camera for photographing on a film used in a peripheral distortion correction printing apparatus which is an embodiment of the present invention described later.

In FIG. 1, 31 is a release switch of the camera, 32 is a switch which is a peripheral correction instruction input means, 33 is a detection means for detecting an angle of view (or focal length), and a single focus. This is not necessary for cameras, but it is necessary for zoom cameras. Reference numeral 34 is a control means for operating various circuits of the camera. Reference numeral 35 is a distance measuring means for measuring the subject distance. Reference numeral 37 is a shutter control means, which is a photometric means 3
The shutter is controlled so that the proper exposure is obtained on the film based on the photometric information of 6.

Reference numeral 38 is a lens control means, and the distance measuring means 3
Based on the distance measurement information of 5, the lens is controlled to focus on the subject. Reference numeral 39 is a data imprinting means (described in detail in FIGS. 2 and 3), which records the correction information on the film by optical or magnetic means. Reference numeral 40 is a display means for displaying a warning as to whether or not to record the correction information.

FIG. 2 is a view showing an example of the data imprinting means 39, where 81 is a film, 82 is a light emitting element, and 8 is a light emitting element.
Reference numeral 3 denotes correction information recorded according to the light emission of the light emitting element 82,
Reference numeral 84 is a shooting frame.

That is, here, an example of the data imprinting means 39 for optically imprinting the correction information is shown.

FIG. 3 is a diagram showing another example of the data imprinting means 39. 91 is a film, 92 is a magnetic recording section, 93 is a magnetic head, 94 is a photographing frame, and 95 is a magnetic head 93. A read circuit 96 is a write circuit of the magnetic head 93.

That is, here, an example of the data imprinting means 39 for magnetically imprinting the correction information is shown.

FIG. 4 is a diagram for explaining the operation of the control means 34 of the part of the camera according to the present invention, in which the function of the distance is added to the peripheral distortion correction. In other words, it is mostly the person's face that is annoying about the distortion in the surroundings, and since I am looking at the whole of the scenery of the other background, I do not care about individual distortions, so when I add a correction the image is distorted conversely. I feel it. Therefore, the ratio of the distortion of the size of the person's face to the shooting screen, that is, the angle of view and the shooting distance, is determined by "{1 / (cos
α / 2)} × {1 / (dtan α / 2)} ”is a predetermined value A
The recording is made so as to instruct the correction when it is larger.

That is, in step 101, the detecting means 3
The angle of view α is input from 3, and in step 102, the subject distance d obtained by the distance measuring unit 35 is input. Then, in the next step 103, it is judged whether or not the value of the above expression is larger than the predetermined value A, and if it is larger, the process proceeds to step 104, and based on the angle of view at this time and the size at the time of printing (for example, E size), An instruction to record distortion correction information is given to the data imprinting means 39. As a result, the peripheral distortion correction information is recorded on the film surface. Also, the predetermined value A
If it is not larger, step 104 is skipped and the process proceeds to the next step.

FIG. 5 is a perspective view of another camera, that is, a camera showing an example of recording the peripheral distortion correction information on the film surface by the imprinting means 39 while confirming the effect of the peripheral distortion correction in the finder.

In FIG. 5, 101 is a camera body and 10 is a camera body.
Reference numeral 2 is a mirror, 103 is a pentaprism, 104 is a focusing plate, and 106 is a peripheral distortion correcting means. Correct the periphery of the image.

In the above structure, the photographer observes the image through the finder window 107 and, if necessary, the peripheral distortion correction means 1
By operating an operation member (not shown), 06 is placed on the front surface of the focusing plate 104 to determine whether or not there is a correction effect. As a result, when it is determined that the peripheral distortion correction means 106 should be inserted, the data imprinting means 39 is driven by an operation member (not shown) to write the peripheral distortion correction information on the film surface.

The correction information written as described above is used in the following peripheral distortion correction printing apparatus as follows.

FIG. 6 is a schematic view of a peripheral distortion correction printing apparatus showing a first embodiment of the present invention, in which 60 is a lamp and 61 is a lamp.
Is a film in which the correction information is written as described above, 6
Reference numeral 2 is a print optical system, 63 is a peripheral distortion correcting means, 64 is a print paper, and 65 is a film information reading means.

When the correction information written on the film 61 is read by the film information reading means 65, the peripheral distortion correction means 63 made of a glass plate is inserted between the print optical system 62 and the print paper 64 based on the read information. R.

As a result, the optical axis becomes slanted toward the periphery, so that an image refracted inward and reduced is formed on the print 64. In other words, a photograph whose distortion has been corrected can be obtained.

FIG. 7 shows a peripheral distortion correction printing apparatus according to the second embodiment of the present invention. Reference numeral 50 denotes a scanner which converts an image on a film 61 into an electric signal and records it in a memory 51. The microcomputer 54 inputs the film information read by the film information reading means 65, and if there is peripheral correction information in the film information, it gives an instruction to the digital processing means 52 by the algorithm described in FIGS. Correction is performed and a print is obtained by the print unit 53. The printing device here is a device for printing an electric signal from a video printer or the like.

FIG. 8 is a flow chart showing the operation of the main part of the third embodiment in which the peripheral distortion correction parts of the microcomputer (not shown) for controlling the operation of FIG. 6 and the microcomputer 54 of FIG. 7 are further improved. -It is a chart.

In step 201, it is judged by the film information reading means 65 whether or not the peripheral distortion correction information is recorded on the film 61. If it is not recorded, step 2
In step 05, the print operation is performed. If the peripheral distortion correction information is recorded, the process proceeds to step 202, and it is checked whether the print size is a large print or a popular print size. If the print size is a large print, the peripheral correction according to the description of FIGS. 10 and 11 is performed. Step 205 assuming there is no need to perform
Go to. If it is not a large print, step 203
Then, the correction information (angle of view) is input by the film information reading means 65, and the peripheral distortion correcting means is set, for example, in order to correct the print in the next step 204.
Then, as described above, the process proceeds to step 205.

FIG. 9 is a flow chart showing the operation of the main part in the fourth embodiment of the present invention, and the same parts as the operation in the third embodiment have the same step numbers. .

Since the angle of view at the time of appreciation can be known from the print size, if it is determined in step 202 that the print is large, the process proceeds to step 301, and the peripheral area recorded based on the normal print size (for example, E sands) A coefficient for correcting the amount of peripheral correction is set for the distortion correction information. Then, the operations after step 203 are performed. As a result, according to the peripheral distortion correction information corrected by the above-mentioned coefficient (in the apparatus as shown in FIG. 6, the thickness of the peripheral distortion correcting means 63 is changed, and in the apparatus as shown in FIG. 7, the arithmetic coefficient of the digital processing means is changed. Larger prints will be made and more natural photos can be obtained.

According to each of the above-mentioned embodiments, when the peripheral distortion correction information is recorded, the peripheral distortion correction means or the like is used to perform the peripheral distortion correction printing operation, and the printing at this time is performed. If the size is a large print, ignore the peripheral distortion correction information recorded on the film (because the periphery is a photograph that appears to be compressed) and perform the print operation as it is, or use the peripheral distortion correction information. Since the print operation is performed by adding the correction (the amount corresponding to the difference in the angle of view),
Of course, it is possible to obtain a natural print, that is, a photograph without peripheral distortion, even when printing a large size, of course when printing in a popular size.

[0032]

As described above, according to the present invention,
When the peripheral distortion correction information is read by the reading means,
The control means for operating the peripheral distortion correcting means in accordance with the information is provided with an operation prohibiting means for prohibiting the operation of the peripheral distortion correcting means when a large print size is printed, and the print size is large in the control means. At the time of printing, a correction unit for correcting the peripheral distortion correction information read by the reading unit is provided, and when the print size is large, the peripheral distortion correction information recorded by the camera based on the popular size is directly used. Since the use causes an unnatural print, the peripheral distortion correction information is not recorded or is corrected, and the print operation is performed. Therefore, it is possible to obtain not only a photograph without peripheral distortion by printing according to the peripheral distortion correction information, but also a natural photograph even when printing a large size.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a camera for photographing a film used in an apparatus according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an example of the configuration of the data imprinting means of FIG.

FIG. 3 is a perspective view showing another example of the configuration of the data imprinting means of FIG.

4 is a flow chart showing the operation of the main part of the control means in FIG.
It is a chart.

FIG. 5 is a schematic configuration diagram showing another example of a camera for photographing a film used in the apparatus of the embodiment of the present invention.

FIG. 6 is a diagram showing a configuration example of a peripheral distortion correction printing apparatus in the first embodiment of the present invention.

FIG. 7 is a block diagram showing a configuration example of a peripheral distortion correction printing device according to a second embodiment of the present invention.

FIG. 8 is a flow chart showing the operation of the main part of the peripheral distortion correction printing apparatus in the third embodiment of the present invention.

FIG. 9 is a flow chart showing the operation of the main part of the peripheral distortion correction printing apparatus in the fourth embodiment of the present invention.

FIG. 10 is a diagram illustrating a size relationship of a subject and its image on a plane when the image is captured by the camera.

FIG. 11 is a diagram for explaining peripheral distortion of a print taken in the state as shown in FIG.

[Explanation of sign]

33 detection means 34 Control means 39 data imprinting means 52 digital processing means 54 Microcomputer 63 peripheral distortion correction means 65 Film information reading means

Claims (2)

[Claims] 1. A peripheral distortion correction unit for correcting peripheral distortion of a film image, a reading unit for reading peripheral distortion correction information recorded on a film surface, and a peripheral distortion correction information read by the reading unit. In the peripheral distortion correction printing device, the peripheral distortion correction printing device is provided with a control unit that operates the peripheral distortion correction unit according to the information. A peripheral distortion correction printing apparatus characterized by comprising an operation inhibiting means for inhibiting the operation of the means. 2. A peripheral distortion correction means for correcting the peripheral distortion of a film image, a reading means for reading the peripheral distortion correction information recorded on the film surface, and a peripheral distortion correction information read by the reading means. And a control unit that operates the peripheral distortion correction unit according to the information, the peripheral distortion correction printing apparatus includes: a reading unit that prints a large print size in the control unit. A peripheral distortion correction printing apparatus comprising a correction unit for correcting the read peripheral distortion correction information.