JP2746791B2 - Stereoscopic image recording method and stereoscopic image recording apparatus - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention can record a three-dimensional image on a lenticular recording material having a recording layer integrally formed on the back surface of a lenticular sheet by scanning exposure. The present invention relates to a three-dimensional image recording method and a three-dimensional image recording device capable of recording a high-quality three-dimensional image in accordance with a subject.

[0002]

2. Description of the Related Art Stereoscopic image recording using a lenticular sheet is performed, for example, on a lenticular recording material F having a recording layer D on the back surface of a lenticular sheet C from different perspectives as shown in FIG. Original images A ₁ and A ₂
Is projected through projection lenses B ₁ , B ₂ , decomposed into a linear image by a lenticular sheet C, and recorded as E ₁ , E _{2, and the} like. The recording layer image E ₁ projected recorded in D, E _2, eye L of the right and left as shown in Figure 12, by observing through the lenticular sheet C of the lenticular recording material F in R, the original image A ₁ and image a ₂ are stereoscopically.

As a three-dimensional image recording apparatus (hereinafter referred to as a recording apparatus) for recording a linear image on such a lenticular recording material, an original image which is a transmission image is irradiated by a light source such as a halogen lamp. As shown in FIG. 11, there is known a recording apparatus by optical exposure (printing) in which transmitted light of an original image is formed on a lenticular recording material through a lenticular sheet by a projection lens and is exposed as a linear image. No. 42-5473, 48-6
488, 49-607, and 53-33847 each disclose a recording apparatus that projects two original images onto a lenticular recording material and prints them.

It is also known that a high-quality stereoscopic image can be obtained by increasing the number of original images.
Japanese Patent Application Publication No. 56-3157 discloses a recording apparatus for sequentially exposing a large number of original images to a lenticular recording material.
No. 8 discloses a recording device that collectively projects a large number of original images on a field lens and then records each original image on a lenticular recording material at a corresponding burn-in angle by a projection lens corresponding to each original image. ing.

In such an optical three-dimensional image recording apparatus, it is necessary to project a plurality of original images onto a lenticular recording material and expose the same, so that an optical system for projecting the original images onto the lenticular recording material is complicated. Unavoidable structure, and the degree of freedom in designing the optical system is low. Further, the response to a change in magnification such as enlargement or reduction of a recorded image is optically and mechanically restricted. In addition, the specification of the lenticular sheet such as the pitch is changed in accordance with the change of the viewing distance. In this case, the change of the projection condition (apparatus configuration) such as the change of the projection exposure (printing) angle is performed optically and mechanically. It cannot be easily handled because it needs to be performed. Similarly, it is also difficult to cope with a change in the recording image size.

On the other hand, image recording by scanning exposure is known as a method of recording a three-dimensional image which can easily cope with various kinds of image processing and specification change of a lenticular sheet with a relatively simple optical system. Various devices and methods have been proposed.

For example, Japanese Patent Publication No. 59-37813 discloses that a plurality of original images are photographed and processed by a TV camera, stored in a frame memory, and the stored image signals are used in accordance with the pitch of a lenticular lens using the image signals. A three-dimensional image recording method is disclosed in which a linear image is sequentially taken out as a (linear) image, a linear image is recorded on a recording material by scanning exposure, and a lenticular sheet is bonded to the recording material. Also, Japanese Patent Application Laid-Open
Japanese Patent No. 295296 discloses that stereoscopic space coordinate data obtained from image information of a plurality of original images having unique continuous parallax information or time difference information is converted into a linear image in a section corresponding to a lenticular lens of a lenticular sheet. A three-dimensional variable pixel forming sheet that forms a pixel for a stereoscopic image by performing a dividing process, aligns the pixel in the reverse order with respect to the parallax information or the time difference information, records the pixel on a recording material, and attaches a lenticular sheet to the recording material. A method of making is disclosed.

The above-described apparatus for recording a three-dimensional image by scanning exposure forms a linear image in which each original image is divided from image information of a plurality of original images, and records this linear image on a recording material. After that, there is a disadvantage that it is necessary to perform an operation of aligning the recording of the linear image and the pitch P of the lenticular sheet so as to be accurately matched, and attaching the two.

[0009]

By the way, as described above, a stereoscopic image using a lenticular sheet is formed by projecting an original image through a lenticular sheet in an optical apparatus, and by scanning exposure. The device electrically divides the original image and records it at a predetermined position,
A linear image of each original image is recorded at a predetermined position on a recording layer (recording material), and the linear image is viewed through a lenticular sheet to obtain a stereoscopic view.

Therefore, it is preferable that the corresponding portions of the linear images obtained from the respective original images are respectively recorded within the same pitch of the lenticular recording material F. However, the original image used for stereoscopic image recording is an image obtained from a different viewpoint, which is captured by a compound-eye camera or the like. Therefore, it is not possible to record the corresponding portions of all the linear images of each original image at the same pitch, and it is usually necessary to perform so-called main subject alignment so that the main image in the original image matches in the stereoscopic image. There is. In the recorded stereoscopic image,
If the main subject is not properly adjusted, the depth sense cannot be set correctly, so that a good stereoscopic view cannot be obtained, resulting in an image that becomes a multiple image or gives a lot of flickering discomfort. There are points.

In a three-dimensional image recording apparatus by optical projection, a screen or the like is arranged at the same position as the lenticular recording material before printing on the lenticular recording material, and an original image is projected. The main subject of each original image is adjusted by adjusting the position of the optical member such as adjusting the angle of the mirror. However, the optical system of a stereoscopic image recording apparatus by projection, particularly the optical system of an apparatus capable of printing multiple original images capable of recording high-quality stereoscopic images, has a complicated configuration, and the optical members are manually adjusted. However, providing an actuator or the like for adjusting an optical member causes a problem that the optical system is further complicated. In order to avoid this, it is necessary to perform exposure separately for each original image, and the process of performing exposure after optical system adjustment for main subject alignment for each original image is repeated. Therefore, it takes a lot of trouble and time to complete the stereoscopic image.

On the other hand, in the recording of a three-dimensional image by scanning exposure, which has a simple structure and can easily cope with various image processing, specification change of a lenticular sheet, increase and decrease of the number of original images, etc.
Adjusting the camera so that the main subject is at a specific position on the screen (original image) when recording the original image, or taking the original image, or by setting the standard distance and taking the original image Main subject alignment is performed, and when a stereoscopic image is recorded on a lenticular recording material, the main subject on the original image is arbitrarily set, and the stereoscopic image is not recorded in accordance with the main subject. Therefore, it is desired to realize a stereoscopic image recording in which a stereoscopic image can be recorded on a lenticular recording material using a lenticular sheet by scanning exposure and the main subject can be favorably aligned.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art, and it is possible to record a three-dimensional image on a lenticular recording material using a lenticular sheet by scanning exposure. It is an object of the present invention to provide a stereoscopic image recording method and a stereoscopic image recording apparatus capable of performing high-quality stereoscopic image recording, which has been performed well.

In order to achieve the above object, a stereoscopic image recording method according to the present invention is directed to recording a plurality of original images from different viewpoints on a lenticular recording material having a recording layer disposed on the back side of a lenticular sheet. Obtaining the image information of the plurality of original images and the main subject information of each original image, dividing each original image into a linear image, and reducing the number of main subjects in each original image.
Lenticular recording of linear images carrying at least the central part
Make sure that the finished 3D image is within the same pitch of the material.
It looks correct when viewed from the nuncicular sheet side
In addition, the linear images of the respective original images are arranged to determine a recording position on the recording layer, and image information to be recorded on the lenticular recording material is obtained, by a light beam modulated according to the image information. A three-dimensional image recording method is provided wherein a three-dimensional image is recorded by scanning and exposing the lenticular recording material.

The three-dimensional image recording apparatus of the present invention is a three-dimensional image recording apparatus for recording a plurality of original images from different viewpoints on a lenticular recording material having a recording layer disposed on the back side of a lenticular sheet. Means for obtaining image information of the plurality of original images and main subject information of each of the original images, and dividing each of the original images into linear images to be recorded; and
A linear image carrying at least the central portion of the main subject of the image
The image is within the same pitch of the lenticular recording material, and
Appreciated the completed 3D image from the lenticular sheet side
The linear images of the original images are arranged so that
Means for determining the recording position on the recording layer in a row ,
Image processing means for outputting as linear image information, and emitting a light beam modulated in accordance with the linear image information output from the image processing means, in the same main scanning direction as the generatrix direction of the lenticular sheet; Means for one-dimensionally deflecting the light beam, and means for relatively moving the lenticular recording material and the light beam deflected in the main scanning direction in a sub-scanning direction substantially orthogonal to the main scanning direction. A three-dimensional image recording apparatus comprising: an image forming unit that exposes a recording layer of a lenticular recording material with the light beam; and a unit that positions an image to be recorded on the lenticular recording material.

[0016]

The present invention relates to a lenticular recording material having a recording layer formed on the back surface of a lenticular sheet,
The lenticular recording material to be attached to the lenticular sheet after recording the image on the recording material is applied to the back side (recording layer side) or the front side of the lenticular recording material by a light beam modulated according to a linear image obtained from a plurality of original images. By performing more scanning exposure, a linear image is recorded on a lenticular recording material to obtain a three-dimensional image, and information of a main subject of the original image is obtained together with image information of the original image, and the original image is divided. The arrangement of the linear images is determined so that the main subject of each original image matches the recorded three-dimensional image as a linear image, and the linear image of each original image is recorded accordingly.

In the method and apparatus for recording a three-dimensional image of the present invention, image information is obtained by a method such as reading an original image by a CCD camera or the like or receiving original image information from an image information source such as a computer, and displaying the original image on a display. Information on the main subject of the original image is obtained by displaying the image and specifying it with a mouse or the like, setting it with a digitizer or the like, or receiving it together with the original image information. Based on the obtained image information of the original image, each original image is divided and a linear image to be recorded on the lenticular recording material is formed as an image signal. Thereafter, the formed linear images are arranged to determine the recording position on the lenticular recording material, and the image information to be recorded is obtained. The arrangement of the linear images is performed so that the main subjects of each original image match. . In other words, the linear images are arranged such that the linear images carrying at least the central portion of the main subject of each original image are recorded within the same pitch of the lenticular recording material, and the images to be recorded on the lenticular recording material are arranged. Information. A lenticular recording material is scanned and exposed by a light beam modulated according to such image information, and a stereoscopic image is recorded.

Therefore, according to the present invention, regardless of the number of original images and the like, a three-dimensional image in which the main subject of the original image is suitably adjusted is recorded by a simple operation and a simple optical system recording apparatus. And a high-quality stereoscopic image can be easily recorded.

In addition, the present invention processes image information of a plurality of original images obtained from different viewpoints, and scans and exposes with a light beam modulated according to the image information to record a stereoscopic image. Unlike optical three-dimensional image recording by projection, the configuration of the optical system of the recording device is simple, and the recording interval and density of linear images can be adjusted by electrical image information processing and simple adjustment of the optical system. Can be changed, and the change and adjustment of the image recording area, the image density, and the like can be easily performed. Therefore, image processing such as increase / decrease of the number of original images, change of magnification of recorded images, and shading correction,
It is possible to easily cope with a change in the specification of the lenticular sheet, a change in the size of the recorded image, and the like.

Therefore, according to the present invention, it is possible to produce a high-quality stereoscopic image with extremely good workability, and according to the specifications of the lenticular sheet, the recorded image size, etc., and after performing various image processing and main subject alignment. Recording can be performed with a high degree of freedom.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a stereoscopic image recording method and a stereoscopic image recording apparatus according to the present invention will be described in detail with reference to preferred embodiments shown in the accompanying drawings. FIG. 1 conceptually shows an example of a three-dimensional image recording apparatus for implementing the three-dimensional image recording method of the present invention. A stereoscopic image recording device (hereinafter, referred to as a recording device) 10 shown in FIG. 1 reads a plurality of original images obtained from different viewpoints by a compound-eye camera or the like, and performs scanning exposure from the back side of the lenticular recording material F. A three-dimensional image is recorded. In the following description, four original images a,
The operation is performed in a case where a stereoscopic image is recorded by reading b, c, and d, but the present invention is not limited to this.

The lenticular recording material F has a predetermined curvature (for example, a cylindrical surface, a parabolic surface, etc.) on the surface side on which the light beam enters, and a lenticular lens in which a number of lenticular lenses having refractive power are arranged only in the direction having the curvature. The recording layer D is formed on the back surface of the sheet C (or a recording material is adhered thereto) (see FIG. 4 ), and the recording apparatus 10 is a preferred embodiment in which the back surface side of the lenticular recording material F (recording layer D). Side), a stereoscopic image is recorded by so-called scanning exposure. Note that the recording apparatus 10 in the illustrated example is not applied only to the lenticular recording material F in which the lenticular sheet C and the recording layer D are integrally formed. The present invention can also be suitably used when a lenticular sheet is attached to form a lenticular recording material. In this case, the exposure may be from the front side. When exposure is performed from the back surface, the lenticular recording material F may be a lenticular sheet C
It is preferable to use one having an antihalation layer formed between the recording layer D and the recording layer D.

The recording apparatus 10 basically reads the original images a to d photoelectrically, performs image processing on the original images a to d, and displays image information that is correctly viewed when the completed three-dimensional image is viewed from the front side of the lenticular recording material F. Image processing means 1 for outputting as
2, a light beam L modulated according to image information from the image processing means 12 is deflected in the main scanning direction (arrow x direction in the figure) and in a sub-scanning direction (arrow in the figure) substantially orthogonal to the main scanning direction. The lenticular recording material F is transported in the y direction), and the lenticular recording material F is two-dimensionally scanned and exposed from the back side (the recording layer C side) by the light beam L to record a three-dimensional image. It is composed of

The image processing means 12 includes a reading device 18 for reading the original images a to d, and a line for processing the image information read by the reading device 18 into image information of a linear image to be recorded on the lenticular recording material F. And an image processing apparatus 20. The reading device 18 has a main subject setting unit 1.
9 are provided.

The reading device 18 photoelectrically reads the original images a to d by solid-state imaging means such as a CCD camera, a CCD sensor, and an image scanner, and color image information (for example, R, G, , And B (primary color image information) to the linear image processing apparatus 20. The original image (image information) is not limited to a color image, but may be a monochrome image, and is not limited to a general photographic image, and may be a medical photograph such as an X-ray photograph or a fundus photograph. Alternatively, the image may be a computer-generated image. Further, the transferred image information may be any of digital information and analog information. As will be described in detail later, the read image information is used as a linear image to be subsequently recorded on the lenticular recording material F. Therefore, one line of image information read by the reading device 18 is performed in correspondence with this linear image or one scan line of the light beam L,
The division of the original image into the linear images by the linear image processing device 20 described later (electrical formation of the linear images) may be unnecessary.

The reading device 18 used in the present invention is not particularly limited, and a device that scans and reads an original image by slit scanning, raster scanning, a drum scanner, or the like using the above-described CCD sensor or the like, Any of various known image reading apparatuses, such as an apparatus that reads in a one-shot manner, can be applied. In addition, a plurality of reading devices 18 preferably having the number of original images may be provided, and a plurality of original images may be read, or the original images may be sequentially read by one reading device 18. Is also good.

The reading device 18 is provided with a main subject setting means 19 for the original image. Recording device 10 in illustrated example
In, the main subject (for example, reference numeral 28 in FIG. 3) of the original image is set by the main subject setting means 19,
In a linear image processing device 20 to be described later, the arrangement of the linear images is determined so that the set main subject of each original image matches on the recorded stereoscopic image.

There is no particular limitation on the main subject setting means 19, and any of known image designating (image area designating or setting) means can be applied. As an example, the following method is exemplified. For example, one original image, for example, original image a
Is displayed on the display, and the cursor is moved by a mouse, an xy plotter, or the like to specify the main subject area. In this case, the image pattern and the position of the area designated as the main subject of the original image a at the time of reading are stored. The stored image pattern and position of the main subject are stored in another original image b
Are read and compared with the main subject position of each original image, that is, the position of a similar image pattern, and the main subject position in each original image in the main scanning direction (x direction) and sub-scanning direction (y direction). The deviation is (Δx _b , Δy _b ), (Δx _c ,
Δy _c ) and (Δx _d , Δy _d ). That is, the main subject position of each original image is set. The recording position of each original image is determined by the linear image processing device 20 described later. In this case, the recording position of the linear image may be determined in accordance with the calculated shift of the main subject, that is, Δx and Δy. The main subject alignment in the x direction is performed by shifting the recording position by image information processing by the image processing device 26 of the linear image processing device 20, and the alignment of the linear image by the alignment device 24 is performed in the y direction main alignment. It is sufficient to perform each of them by shifting.

The main subject setting means 19 is not limited to being arranged in the reading device 18 but may be arranged in a linear image processing device 20 described later. The recording device 10
The main subject may be automatically determined by the reading device 18 or the linear image processing device 20 to set the main subject without providing the main subject setting means. The main subject may be determined by displaying the bar code or the like on the image and reading the bar code.

Further, from the photographing data at the time of photographing the original image,
The deviation of the main subject in the sub-scanning direction of each original image may be calculated, and the arrangement of the linear images by the arrangement device 24 may be shifted accordingly. In the original images obtained from a plurality of different viewpoints, as shown in FIG. 2, in accordance with the change in the distance of the subject, the image of the subject at each depth position is shifted from the optical axis of each camera lens. Be recorded. In addition, the amount of the shift is related to the distance between the photographing lenses.
As disclosed in No. 81, it can be represented by the following formula. _{e = kf / (kf t)} k `= se / k = sf t / (kf t) a` = se / a = (k / a) k `b` = se / b = (k / b) k ｀ [where f _t is the focal length of the taking lens 100; a, b, and k are the distances from the center line 102 of the taking lens 100 to the subjects A, B, and K, respectively;
a ｀, b ｀ and k ｀ are respectively the film plane 104
From the axis 106 along to the images A ｀, B ｀ and K ｀, respectively. Therefore, the shift amount of the main subject of each original image can be calculated from the photographing data of the original image, and the main subject of each original image can be set. Note that the photographing data may be obtained by recording the main subject distance at the time of photographing from the autofocus mechanism or the zone focus mechanism of the original image photographing means into the original image by optical means or magnetic means. Alternatively, a method of calculating a shift amount of each original image by assuming a standard photographing distance in advance as a simple method is also exemplified.

Further, assuming that the main subject is located at the center of the screen, an image pattern at the center of one original image,
The displacement of the image pattern in the central portion of the other original images may be examined, and the displacement of each original image may be examined in the same manner as described above to set the main subject position.

The recording device 10 of the illustrated example records a three-dimensional image from the back surface of the lenticular recording material F.
When the original image is read from the front side, such as when the original image is a reflection original, it is necessary to reverse the front and back of the original image. For this reason, the reading device 18 may have means for reversing the original image. There is no particular limitation on the front / back inversion means, and any of various known methods such as a method using a mirror or the like provided in the reading device 18 and a method using image processing for inverting read image information by signal processing can be applied. is there. It should be noted that the front / back reversing means is not limited to being provided in the reading device 18,
The linear image processing device 20 may be provided. In the case where the lenticular sheet is bonded after the image is recorded on the recording material (recording layer), since the recording is performed from the front side of the lenticular recording material, the front / back inversion means is not required.

Further, the image processing apparatus may have means for judging the necessity / unnecessity of the reversal of the original image, and means for judging whether the original image is a negative image or a positive image. There is no particular limitation on the method of discriminating the front / back of the original image or the negative / positive method. A method of mechanically or optically discriminating the original image by providing a notch or a sprocket hole, or providing a mark for the front / back discrimination in the original image Various methods such as a method of reading the mark when reading the original image and making a determination based on the mark may be used. Alternatively, the operator may input the front and back of the original image at the time of reading the original image by the reading device 18, or set in advance whether the reading of the original image by the reading device 18 is front or back. In response to this, the operator may load the original image into the reading device 18. In this case, there is no need for a means for distinguishing between front and back or negative / positive.

Original image a read by reading device 18
Are transferred to the linear image processing apparatus 20. The linear image processing device 20 includes a front image processing device 21,
It is composed of a dividing device 22, an arraying device 24, and an image processing device 26. The image is divided for each original image from the image information of the original images a to d, and a linear image to be recorded on the lenticular recording material F is completed. The recording position of the linear image of each original image on the lenticular recording material F is set (array of linear images) so that the stereoscopic image can be correctly viewed when viewed from the front side of the lenticular recording material F, and further, the lenticular used. The recording (arrangement) interval of the linear image, the width of the linear image, the image recording area, etc. are set according to the recording conditions such as the specifications of the sheet C and the image recording magnification, and the density and the color balance are adjusted as necessary. After performing image processing such as adjustment and sharpness, image information of stereoscopic image recording is transferred to the image forming apparatus 14.

In the linear image processing apparatus 20, first,
The image information of the original images a to d (and information of the main subject) sent from the reading device 18 is sent to the front image processing device 21. The pre-image processing device 21 determines from the image information of the original image whether various types of image processing, that is, various corrections such as color balance, density balance, sharpness, and edge enhancement, and the necessity / non-necessity of image processing are determined. These image processes are performed accordingly. These corrections and image processing may be performed by the operator in response to the input, or the automatic determination by the front image processing apparatus 21 and the input by the operator may be used in combination. This processing may be performed in the image forming apparatus 14 without being performed in the front image processing apparatus 21.

Next, the dividing device 22 divides the original image from the processed image information to obtain a linear image to be recorded on the lenticular recording material. As described above, in optical stereoscopic image recording in which the projection light of an original image is printed on a recording layer of a (lenticular) recording material, the projection light of each original image is projected through a projection lens, and each original image is projected by a lenticular sheet C. Is decomposed into a linear image and recorded on the recording layer (see FIG. 11).

On the other hand, the recording apparatus 10 of the present invention
The image is read photoelectrically and a stereoscopic image is recorded by scanning exposure.
The original image a read by the reading device 18
From ~ d, by image information processing by electric signal processing,
Depending on the stereoscopic image to be recorded and the specifications of the lenticular sheet C, etc.
First, a linear image to be recorded on the recording layer D obtained by dividing the original image
Is formed electrically. Normally, the image information
The information is a line corresponding to one line read by the reading device 18.
Since it is transferred to the linear image processing device 20 as image information,
This line image information corresponds to the linear image to be recorded.
When using the line image from the reading device 18,
Alternatively, if necessary, the line image information is synthesized (A
Or division) and a linear image to be recorded on the recording layer D, eg,
For example, as shown in FIG.
₁ , A_Two , A_Three , A_Four ... a_n , A linear image from the original image b
b₁ , B_Two , B_Three , B_Four …… b_n , A linear image from the original image c
Image c₁ , C_Two , C_Three , C _Four …… c_n , More linear than the original image d
Image d₁ , D_Two , D_Three , D_Four …… d_n Etc. each original
The image is divided into linear images.

The formation of the linear image (division of the original image) includes the resolution of the reading device 18 (the number of scanning lines to be read), the pitch P of the lenticular sheet C, the recording magnification of the stereoscopic image (or the recording size with respect to the original image size), Lenticular recording material F
Of the original image by the reading device 18 such as the total pitch number of the stereoscopic image recording range, the spot diameter of the light beam L incident on the lenticular recording material F (effective writing spot diameter), the number of original images, and the like. What is necessary is just to perform suitably according to recording conditions. Further, in the recording apparatus 10 of the present invention, in order to obtain a good stereoscopic view, the width of each linear image to be recorded on the recording layer D is adjusted for each original image. Each linear image is recorded so as to fill one pitch without any gap. Therefore, a ₁ + b ₁ + c ₁ + d
Each linear image may be formed with a width such that ₁ = P.

The recording conditions of the three-dimensional image, that is, the specifications of the lenticular sheet C such as the pitch P, the size of the three-dimensional image to be recorded, the recording magnification of the three-dimensional image, and the like, are input by the operator in advance. Or pre-scan (look-ahead) of the original image
Alternatively, it may be set automatically by selecting the lenticular recording material F to be used or the like. Alternatively, the recording conditions may be set by using both of them.

However, as described above, the reading of the image information by the reading device 18 is performed corresponding to this linear image.
Preferably, when the number of scanning lines and the total number of lenticular lenses are equal, the dividing device 22 may be omitted.

The image information of the linear image of each original image is then transferred to the lenticular recording material F so that the three-dimensional image completed in the arrangement device 24 can be viewed correctly when viewed from the front side of the lenticular recording material F. Is determined. That is, each linear image is arranged. The arrangement of the linear images is performed so that the main subject of each original image set by the main subject setting means 19 matches on the recorded stereoscopic image.

For example, when the pitch P is 0.1 mm, in the original image a, the main subject 28 set by the main subject setting means 19 is changed to linear images a _{400 to} a ₆₀₀ .
Similarly, in the original image b, linear images b ₃₉₈ -b
₅₉₈ , the linear images c _{397 to} c 3
₅₉₇ , in the original image d, linear images d _{396 to} d ₃₉₆
It is assumed that the main subject 28 has been recorded at ₅₉₆ . Here, in order to preferably perform main subject alignment, a linear image in which the same portion of the main subject of each original image is recorded is
Since it is necessary to be recorded in the same pitch, the linear image a
₄₀₀ , b ₃₉₈ , c ₃₉₇ and d ₃₉₆ are within the same pitch,
The linear images a ₄₀₁ , b ₃₉₉ , c ₃₉₈ and d ₃₉₇ are within the same pitch, and the linear images a ₄₀₂ , b ₄₀₀ , c ₃₉₉ and d
₃₉₈ within the same pitch,..., Linear image a ₆₀₀ , b
₅₉₈ , c ₅₉₇ and d ₅₉₉ need to be recorded within the same pitch, respectively.

Therefore, it is necessary to arrange the linear images of the original images in accordance with the alignment of the main subject. As shown in FIG. 4, the linear images of the original image d are arranged in the sub-scanning direction (arrows). y direction) The linear image of the original image c is sequentially from the second pitch, the linear image of the original image b is sequentially from the third pitch, and the linear image of the original image a is sequentially from the fifth pitch. The recording position (array) of each linear image is determined so as to be recorded at the corresponding position.

When the number of linear images carrying the main subject of each original image is different, each linear image is recorded so that at least the linear images carrying the central portion of the main subject are recorded within the same pitch. The recording position (array) of is determined.

The arrangement order of each linear image within one pitch of the linear image is determined according to the order of recording (photographing) parallax of the original image. For example, the photographing position is shifted from left to right. In the case of the original image a → d, the recording of the linear image is performed as shown in FIG.
(The same state as when watching), the linear images of the original images a → d are sequentially arranged from left to right.

The arrangement of the linear images is not limited to the set main subject, but also depends on the front and back of the original image, the specifications of the lenticular sheet C, and the like. When viewed through sheet C,
This image is of course performed so as to be a correct stereoscopic image.

The linear image information of each original image arranged in a predetermined order is then sent to the image processing device 26, for example, the set recording conditions and the like, for example, the number of formed linear images (or scanning Line information), the pitch P of the lenticular sheet C, the recording magnification (or may be set based on the size of the original image and the recorded image), the number of original images, the beam spot diameter of the light beam L, and the like. The image information is processed and recorded as lenticular recording material F, and is sent to the image forming unit 14.

The image forming means 14 comprises the linear image processing device 2
The light beam modulated according to the linear image information transferred from 0 is deflected in the main scanning direction (x direction), and the lenticular recording material F is moved in the sub scanning direction (y) substantially orthogonal to the main scanning direction.
Direction), the lenticular recording material F
The then two-dimensionally scanned from the back side, which records a stereoscopic image, the light beam L _R modulated according to linear image information, multiplexes the L _G and L _B in one light beam And a light beam scanning means for scanning the lenticular recording material F two-dimensionally with the combined light beam L.

In the image forming means 14, the linear image information transferred from the linear image processing device 20 is first transferred to the exposure control circuit 30. The exposure control circuit 30 outputs the linear image information from the linear image processing device 20, that is, R (red).
Signal, G (green) signal, and B (blue) signal information, and D / A conversion,
After performing various exposure corrections and signal processing, 1
The exposure amount of each pixel of the line is calculated, and each light source 32 is calculated.
The exposure amount (modulation amount) of each pixel for one line is determined for (32R, 32G, 32B), and the image information signal is transferred to the nonlinear amplifier 35.

The non-linear amplifier 35 is mainly for compensating the non-linearity of the AOM (acoustic optical modulator) 39, and the image information signal corrected by the non-linear amplifier 35 is AO (Acoustic-Optic Modulator).
The data is transferred to the drive circuit 37 (37R, 37G, 37B) of the M39, and the AOM 39 (39R, 39G, 39B) is driven.

On the other hand, the light source 32 is a lenticular recording material.
A photosensitive layer provided on the recording layer D of F, for example, red (R)
Photosensitive layer, green (G) photosensitive layer, and blue (B) feeling
A light beam light source that emits light with a narrow band wavelength that exposes the optical layer
In this case, the light source 32R is an R sensor of the lenticular recording material F.
Light beam L for exposing the light layer_R And the light source 32G is the same G
Light beam L for exposing the layer_G And the light source 32B is the B photosensitive layer.
Light beam L for exposing _B Each with a constant output
I do.

The light source of the light beam used in the present invention is not particularly limited, and may be any of various gas beam light sources such as a gas laser such as a He-Ne laser, various solid-state lasers, semiconductor lasers, and LEDs. What is necessary is just to select suitably according to the recording layer D etc. of the lenticular recording material F. For example, if the recording layer D of the lenticular recording material F has a spectral sensitivity in the visible light region, the He- layer corresponding to the R photosensitive layer
Ne laser, Ar laser corresponding to G photosensitive layer, and B
A He-Cd laser or the like corresponding to the photosensitive layer is preferably used as a light source. When the recording layer is a false color recording material, a semiconductor laser (LD) or the like is suitably used as a light source. Further, a light valve or the like may be used.

[0053] Each light beam L _R emitted from the light sources 32, L _G, and L _B is a beam expander arranged corresponding to each of such a collimator lens,
The light beam diameter and the like are adjusted by the shaping means 40 (40R, 40G, 40B).

Next, the light beams L _R , L _G and L _B
Is the corresponding AOM39 (39R, 39G,
39B). Here, since each AOM 39 is driven according to an image to be recorded (linear image), the intensity of each light beam incident on the corresponding AOM 39 is modulated according to the image to be recorded. The optical modulator used in the recording apparatus 10 of the present invention is an AOM3 in the illustrated example.
The light modulator is not limited to 9, and any of various light modulators such as a magneto-optical modulator and an electro-optical modulator can be applied.

Each light beam modulated by AOM39
Are dichroic mirrors 42 and 44 and mirror 4
The optical beam combining system consisting of
Multiplexed with the Dichroic in light beam combining system
The mirror 42 is a light beam L_R Reflect light beam of wavelength
And the other is transmitted, while the dichroic mirror 44 is
Beam L_GIs reflected and the others are transmitted.
Therefore, the light beam L_B Is reflected by the mirror 46 and the die
By transmitting through the Croic mirrors 42 and 44
Light beam L_G Is reflected by the dichroic mirror 44
And transmitted through the dichroic mirror 42,
Further, the light beam L _R Is reflected on the dichroic mirror 42
Thus, the three light beams become one light beam L
Multiplexed.

The combined light beam L then enters a polygon mirror 34, which is an optical deflector, and is deflected in the main scanning direction (arrow x direction). The optical deflector used in the recording apparatus of the present invention is not limited to the polygon mirror 34 in the illustrated example, and any of various known optical deflectors such as a galvanometer mirror and a resonant scanner may be used. In addition, if necessary, a tilt correction optical system of the polygon mirror 34 such as a cylindrical lens or a cylindrical mirror may be provided with the polygon mirror 34 (optical deflector) interposed therebetween.

The present invention is not limited to a so-called multiplex type optical system for recording an image by multiplexing a plurality of light beams as shown in the example shown in FIG. Is incident on substantially the same point on the reflection surface of the polygon mirror 34 at slightly different angles, is deflected in the main scanning direction, forms an image at different positions on the same scanning line SL on the lenticular recording material F, and Or a non-multiplexing method in which three types of light beams travel at slightly different angles from each other and are incident on substantially the same point on the lenticular recording material F. An optical system may be used.

The light beam L deflected in the main scanning direction is given by f
The θ lens 48 is adjusted so as to form an image at a predetermined position on the lenticular recording material F with a predetermined beam diameter, is reflected in a predetermined direction by the falling mirror 49, and has a predetermined shape on the rear surface side of the lenticular recording material F. The light enters the position to define the scanning line SL and exposes the photosensitive layer D.

Here, in a state where the lenticular recording material F is substantially coincident with the main scanning direction, a sub-scanning direction (arrow y) substantially perpendicular to the main scanning direction is carried out by sub-scanning conveyance means (not shown).
Direction). The main scanning direction is substantially parallel to the generatrix direction of the lenticular sheet C. Therefore,
As a result, the light beam L can scan and expose the lenticular recording material F two-dimensionally, and as shown in FIG. 4 (the main scanning direction is perpendicular to the drawing), In accordance with the recording position (array) of the linear images set by the processing device 20, the linear images of the respective original images are sequentially recorded at predetermined positions. In the recording apparatus 10 of the present invention, the recording position of each linear image in the arrangement device 22 of the linear image processing apparatus 20 is adjusted so that the main subject 28 of each original image is aligned and recorded on the lenticular recording material F. Since the (array) is determined, recording of a good stereoscopic image in which the main subject has been adjusted is performed.

The linear image of each original image is not limited to one recorded by one scanning of the light beam L, and one linear image is formed by scanning the light beam a plurality of times according to the set width of the linear image. An image may be recorded. Note that it is of course preferable that at least the scanning lines SL corresponding to the number of the original images be defined within the pitch P of the lenticular recording material F.

In image recording for obtaining a stereoscopic view using the lenticular sheet C, it is known that it is effective to widen the line width of the recorded linear image by an appropriate amount (line width expansion). Preferably, the pitch P is filled with no gap or overlap by the linear image of each original image, that is,
In the illustrated example, it is preferable to enlarge the recording width of each linear image so that a ₁ + b ₁ + c ₁ + d ₁ = P.
The method of adjusting the recording width of the linear image is not particularly limited. A method of recording one linear image a plurality of times, a light beam when recording a linear image in one scan using a beam expander, or the like. A method of increasing the diameter is exemplified.

The sub-scanning conveyance means for the lenticular recording material F is not particularly limited.
A method using two nip roller pairs, a method using an exposure drum supporting the lenticular recording material F and two nip rollers arranged to sandwich the scanning line SL and pressing the exposure drum, and fixing the lenticular recording material F at a predetermined position by suction or the like Method using an exposure table moved by a screw transmission device and the like, a method using a belt conveyor, etc.
Any known method of transporting various sheet-like materials may be used.

The main scanning direction and the generatrix direction of the lenticular sheet C do not necessarily have to coincide with each other. It goes without saying that image recording may be performed with the subscanning direction coincident with the generatrix direction. It is advantageous to match the main scanning direction with the generatrix direction as shown in the figure, in terms of ease of aiming, the ability to continuously record one linear image, and the like. We can expect record.

In the three-dimensional image recording using the lenticular sheet C, in order to obtain a good three-dimensional image, a predetermined linear image (four linear images in the illustrated example) must be accurately set within the pitch P of the lenticular sheet C. ) Is important. Further, in the recording apparatus 10 of the present invention,
Since the main subject alignment of the original image is performed by adjusting the linear image array of each original image, the recording start position of the linear image is different for each original image. For the original image recording, the linear image of the original image c has one pitch, the linear image of the original image b has two pitches, and the linear image of the original image a has four pitches.
Recording of a linear image is started with a delay of each pitch.

For this reason, it is preferable that the recording apparatus of the present invention has alignment means for image recording of the lenticular recording material F. In the recording apparatus 10 and the like in the illustrated example, the position index provided on the lenticular recording material F is determined. Positioning means 16 for detecting and recording an image in accordance with the detection of the position index is provided. In the recording apparatus 10 of the illustrated example, the positioning unit 16 includes a detection unit 50 that detects a position index formed at the downstream end of the lenticular recording material F in the main scanning direction, and a recording connected to the detection unit 50. It comprises a position control circuit 54. The recording position control circuit 54 is connected to the exposure control circuit 30.

In the recording apparatus 10, the position index of the lenticular recording material F is detected by the detecting means 50 of the positioning means 16. The recording position control circuit 54 receives the position index detection signal of the detecting means 50, detects that the lenticular recording material F has been transported to a predetermined position, and sends the signal to the exposure control circuit 30. The exposure control circuit 30 receives this signal and modulates each light beam by the AOM 39 so that the recording of the linear image of each original image by the light beam L is at a predetermined position.

Such alignment of image recording may be performed only at the start of recording. Periodic or continuous detection by light detection or the like is performed, and periodic or continuous detection is performed by feeding back the detection result. The position of the image recording may be appropriately adjusted.

The position index formed on the lenticular recording material F is not particularly limited, and examples thereof include various shapes such as a sprocket hole, a notch, a concave portion and a convex portion. Also, if the position to be formed is other than the image recording area of the lenticular recording material and is a position that can be detected before the start of image recording, it may be formed at an arbitrary position such as near the front end or side in the sub-scanning direction. It is possible. Further, it is not limited that only one position index is formed, and a plurality of position indexes may be formed, or a position index may be formed periodically.

On the other hand, the detecting means 50 detects the position index by various methods according to the shape of the position index and the like. Any of various methods can be applied, such as an optical detection means for detecting a change in the pressure, detection by air, or the like. Further, a magnet or the like may be used as a position index of the lenticular recording material, and the alignment may be performed by detecting the magnetic force.

Further, the positioning means used in the recording apparatus of the present invention is not limited to a means for detecting a position index formed on a lenticular recording material as shown in the illustrated example.
Instead of the position index, the alignment may be performed by detecting the unevenness of the lenticular sheet C. For example,
The light emitting element and the light receiving element are arranged in accordance with the unevenness of the lenticular sheet, and the optical method of adjusting the recording position based on a change in the amount of light caused by the detection light from the light emitting element passing through the light emitting element and the unevenness of the lenticular sheet are described above. Such a method of detecting mechanically or by air or the like is suitably used. Further, a method of arranging an encoder or the like on a transport roller or the like of the lenticular recording material F and detecting the position of the recording material to perform image recording alignment is also preferably exemplified.

The recording device 10 shown in FIG.
Although the light beam is modulated by an optical modulator such as the light modulator 9, the present invention is not limited to this, and the light emission of the light source 32 may be modulated by pulse width modulation. May be electrically modulated. FIG. 5 shows an example of a recording apparatus using pulse width modulation. In addition,
The example shown in FIG. 5 has basically the same configuration except that the method of light beam modulation is different from that of the recording apparatus 10. Therefore, the same members are denoted by the same reference numerals and detailed description thereof will be omitted.

In the example shown in FIG. 5, each light source 32 (32R, 32R) is determined by the exposure control circuit 30.
G, 32B), the exposure of each pixel for one line is
The data is transferred to the modulation circuit 36. The modulation circuit 36 modulates the pulse width of the light emitted from the light source 32 in a predetermined repetition cycle set in advance, for example, in one pixel cycle.
In the pulse width modulation in this image exposure method, the light output of the light source 32, which is the light source, is set to be constant, and the time during which the light source 32 continuously emits light within one pixel period, that is, one time (one pixel) The continuous exposure time is output to the drive circuit 38.

Drive circuit 38 (38R, 38G, 38B)
Is a driving circuit for driving the light source 32. In the case of pulse width modulation, the driving circuit
A driving current corresponding to a light output preset for each light source is supplied to the light source 32. As a result, the light source 32 emits light with a light output preset for each light source for a time determined for each light source according to the i-pixel. This is performed over one line, and the light source 32 performs one-line exposure.

Each light beam L _R emitted from the light source 32,
L _G, and L _B are shaping means 40 which are arranged corresponding to each (40R, 40G, 40B) is shaped by, then the light beam multiplexing of one by later-described light beam combining system, similar The lenticular recording material F is exposed by scanning.

As described above, the recording apparatus 10 records an image on the lenticular recording material F moving in the sub-scanning direction by the light beam L deflected in the main scanning direction. In addition, the generatrix direction of the lenticular sheet C and the main scanning direction are substantially in agreement. Therefore, when the lenticular recording material F is continuously conveyed, the scanning line S defined by the light beam L
L becomes oblique to the generatrix of the lenticular sheet C.

In a normal image recording apparatus, the deviation of the scanning line SL does not cause a serious problem. However, in recording a three-dimensional image using the lenticular sheet C as in the present invention, the scanning line SL is shifted with respect to the generating line. The displacement of the SL causes a large deterioration in image quality. In addition, when the sub-scanning speed of the lenticular recording material F is higher than the main scanning speed of the light beam L, or when the pitch P of the lenticular sheet is small, the scanning line The SL may be defined over two pitches. Therefore, the deviation angle of the scanning line SL is calculated from the relationship between the sub-scanning speed and the main scanning speed, and the light beam L
May be set at an angle θ such that the scanning line SL coincides with the generatrix direction.

As shown in FIG. 6, when the width of the lenticular recording material F in the main scanning direction is H, the sub-scanning speed is V, and the main scanning speed is v, the scanning start and end points of the light beam L are In the sub-scanning direction is represented by the equation “Δy = H × (V /
v) ". Therefore, the angle θ of the defined scanning line SL is expressed by the equation “θ = Δy / H = V / v”. By setting the main scanning direction x in consideration of the angle θ, the scanning line SL defined by the light beam and the generatrix of the lenticular sheet C can be substantially matched, and a good stereoscopic image is recorded. be able to. In addition,
This adjustment may be performed by adjusting the angle of the lenticular recording material F.

The method for matching the scanning line SL with the generatrix of the lenticular sheet C is not limited to the above method. For example, the lenticular recording material F is repeatedly transported and stopped for sub-scanning transport. The conveyance of the lenticular recording material F and the modulation of the light beam (image recording) may be controlled so that the image recording by L is performed.

The recording apparatus described above deflects the light beam L in the main scanning direction and conveys the lenticular recording material F in the sub-scanning direction, thereby scanning and exposing the lenticular recording material F to record a stereoscopic image. The sub-scanning of the light beam is performed by changing the angle of the optical deflector of the polygon mirror 34 and the angle of the falling mirror 49 in the sub-scanning direction by moving the optical system of the light beam L in the sub-scanning direction. The scanning line SL may be moved in the sub-scanning direction.

Further, as shown in FIG. 7, a cylindrical drum 58 for fixing the lenticular recording material F is used.
While the light beam L is incident on a predetermined exposure position, the drum 58
The lenticular recording material F may be rotated in the main scanning direction (x direction) and moved in the sub scanning direction (arrow y direction) to scan the lenticular recording material F two-dimensionally. Also in this case, the sub-scanning may be performed by changing the angle of the optical deflector or the mirror or by moving the optical system.

In the example described above, four original images a to d are read by one or a plurality of reading devices 18.
And a three-dimensional image (linear image) is recorded line-sequentially on the lenticular recording material F. However, the present invention is not limited to this, and one or more original images can be read. Alternatively, the recording of the three-dimensional image may be performed by alternately recording the linear image.

In this case, for example, the original image a is read first, the same image processing is performed by the reading means 12, and the image information is transferred to the image forming means 14. Accordingly, the linear image of the formed original image a is shifted to a predetermined position of the lenticular recording material F, that is,
In the example shown in FIG. 4, the linear images a ₁ , a ₂ ,
a ₃ , a ₄ ... are sequentially recorded at predetermined positions. When the recording of the original image a is completed, similarly, the reading of the original images b, the original images c,... And the recording of the linear images are sequentially performed, and the recording of the stereoscopic image is completed.

The reading of the original image and the recording of the image may be performed in parallel. When one scanning line or one linear image of the original image a is read by the reading device 18, the image information is sequentially transferred to the reading unit 12, the same image processing is performed, and the processed image is processed. The information is sequentially transferred to the image forming unit 14. Upon receiving the image information, the image forming means 14 records a linear image in accordance with the transmitted image information, and a ₁ , a ₂ , a ₃ , a ₄ ... The recording of the linear image a is performed. That is, in this aspect, the recording of the linear image is performed in parallel with the reading of the original image a with a delay of one to several scanning lines.

Further, the reading means 12 for the number of original images (or the linear image processing apparatus 2 for the number of original images
0), a plurality of original images are read simultaneously or sequentially, and a separate linear image processing device 20 is provided for each original image.
The image forming means 14 and each linear image processing device 20 are switched for each recording of one linear image and are sequentially connected by using a switcher or the like, and the linear image information of each original image is a _{1, b 1, c 1,} d 1, a 2, b 2, ......
.. May be sequentially transferred to the image forming means 14 and may be recorded on the lenticular recording material F line by line.

Further, the recording apparatus 10 of the present invention may have a plurality of image forming means 14 and record a plurality of linear images in parallel. In particular, it has the same number of reading means 12 and image forming means 14 as the number of original images,
When the reading of all the original images and the recording of the linear image are performed at the same time, it is possible to record a stereoscopic image with extremely high efficiency.

In any case, it goes without saying that the recording position of the linear image of each original image is adjusted in accordance with the set recording position of the main subject.

Although the recording apparatus of the present invention described above records a three-dimensional image (linear image) from the back side of a lenticular recording material, the present invention is not limited to this. The recording of a linear image may be performed from the front surface, that is, via the lenticular sheet C. FIG. 8 conceptually shows an example of performing such front exposure in the recording apparatus of the present invention when viewed from the sub-scanning direction.

The (stereoscopic image) recording device 60 shown in FIG. 8 uses the same members as the above-described recording device 10 in many cases, and therefore the same members are assigned the same numbers and detailed description thereof will be omitted. Also, the following description is based on four original images a, b, and c.
This is performed for the case where a stereoscopic image is recorded from d and d.
Of course, it is not limited to this. Furthermore, since the recording device 60 is a front exposure, the lenticular recording material F used is also a normal one having an antihalation layer on the back surface of the recording layer D.

The three-dimensional image recording device 60 (hereinafter, recording device 60) shown in FIG.
And a scanning optical system 64, a sub-scanning and conveying device (not shown) for the lenticular recording material F, and an image forming means having a moving device for the scanning optical system 64.
Similarly to the recording apparatus 10 described above, three light beams L _R , L _G , and L modulated according to an image (linear image) to be recorded.
_The light beam L obtained by combining _B is deflected in the main scanning direction (the direction of the arrow x in the drawing), and the lenticular recording material F is conveyed in the sub-scanning direction (the direction perpendicular to the paper of FIG. 8) substantially perpendicular to the main scanning direction. By doing so, a three-dimensional image is recorded on the lenticular recording material F.

In the recording device 60, the original images a to d are read by the reading device 18 of the image processing device 62 as before, and the image information is transferred to the linear image processing device 66. Here, similarly to the recording device 10 described above, the main subject setting means 19 is disposed in the reading device 18 and the main subject of each original image is set.

The linear image processing device 66 has basically the same configuration as that of the linear image processing device 20 of the recording device 10 described above, and converts the image information of the original images a to d as necessary. A front image processing device 21 for performing image processing such as adjustment and sharpness, a dividing device 22 for dividing each original image to form a linear image (see FIG. 3), and a completed stereoscopic image from the front side of the lenticular recording material F A lenticular recording material F of a linear image of each original image so that it can be seen correctly when viewed.
The arrangement device 24 for setting the recording position on the line, the recording (arrangement) interval of the linear images, the width of the linear images, the image recording area according to the specifications of the lenticular sheet C to be used and the recording conditions such as the image recording magnification. And the like, and transfer image information of stereoscopic image recording to the scanning optical system 64. Note that, similarly to the recording device 10, the determination (arrangement) of the recording position of the linear image by the arrangement device 24 is performed so that the main subject of the set original image matches on the recorded stereoscopic image.

Here, since the recording apparatus 60 of the illustrated example performs image recording from the front side of the lenticular recording material F, the angle of the light beam L incident on the lenticular sheet C is changed for each original image to be recorded. There is a need to. In the illustrated example, the angle adjustment of the light beam L is performed by moving the scanning optical system 64. Therefore, the linear images of the four original images are changed to a ₁ and b as in the recording apparatus 10 described above.
Instead of recording in the order of ₁ , c ₁ , d ₁ , a ₂ , b ₂ ,..., Line-sequentially, the recording of a linear image is performed for each original image, that is, for each of the above-mentioned original images. As in the aspect (interlaced scanning), for example, linear images a ₁ and a
After recording ₂ , a ₃ , a ₄ ... At predetermined positions, the scanning optical system 64 is moved to adjust the incident angle of the light beam L,
The linear images b ₁ , b _2, ... Of the original image b are recorded, and similarly, the linear images c ₁ , c ₂ of the original image c and the linear images are sequentially recorded for each original image. Do.

Accordingly, the linear image information transferred from the linear image processing device 66 to the scanning optical system 64 is in an order corresponding to this, that is, the recording of the linear image is performed in the order of the original images a → b → c → d. When the processing is performed in the order, first, the linear images a ₁ ,
The image information of a ₂ , a ₃ , a ₄ ... is transferred, and similarly, the linear image of the original image b, the linear image of the original image c, and the linear image of the original image d are transferred. For this reason, this recording device 1
In the case of 0, the mode of reading a plurality of original images at once is also 1
Also in the mode of reading sequentially one by one, there is no large difference in the recording efficiency of the stereoscopic image. The recording of the linear image of each original image is not limited to the above order.

The scanning optical system 64 is formed by housing a light beam emitting means, a multiplexing optical system, an optical deflector and the like in a housing 68, and is configured to be movable circumferentially by a moving device. Thereby, the incident angle of the light beam L incident on the lenticular recording material F in the lenticular sheet curvature direction is adjusted.

The scanning optical system 64 from the linear image processing device 66
Is transferred to the exposure control circuit 30 to calculate the amount of exposure of each line of pixels for each of R, G, and B colors, similarly to the recording apparatus 10 described above. The exposure amount of each pixel for one line is determined for each light source 32 (32R, 32G, 32B), and the AOM 39
(39R, 39G, 39B).

On the other hand, each of the light beams L _R , L _G , and L _B emitted from the light source 32 is adjusted in beam diameter and the like by shaping means 40 (40R, 40G, 40B) arranged corresponding to each light beam. Then, the intensity is modulated according to the image to be recorded by the AOM 39, and one light beam is multiplexed by a multiplexing optical system described later. Note that, similarly to the recording device 10 described above, the light beam light source used in the recording device 60 is not particularly limited, and a known light source such as a gas laser such as a He-Ne laser, a semiconductor laser, various solid-state lasers, and a light valve. Various beam light sources can be used. Also,
In addition to the method using an optical modulator such as an AOM, FIG.
It is needless to say that image recording may be performed by pulse width modulation as described in (1) or a method of electrically modulating the intensity of the light source 32 itself.

Each light beam modulated by the AOM 39 is transmitted to the dichroic mirrors 42 and 44 and the mirror 4
6, one light beam L by the multiplexing optical system composed of
Are reflected by the reflection mirror 70 in a predetermined direction, and enter the polygon mirror 34.

The light beam L deflected in the main scanning direction (the direction of the arrow x in the figure) by the polygon mirror 34 is condensed by the fθ lens 48 to a predetermined position on the recording layer D of the lenticular recording material F with a predetermined beam diameter. A slit (not shown) adjusted to image and formed in housing 68
The light is further emitted out of the scanning optical system 64, enters the lenticular sheet C of the lenticular recording material F, and forms an image on the recording layer D.

The lenticular recording material F is moved in the sub-scanning direction (perpendicular to the paper surface in FIG. 8 and the arrow y in FIG. 9) substantially perpendicular to the main scanning direction.
The light beam L deflected in the main scanning direction scans the lenticular recording material F two-dimensionally. The sub-scanning device for the lenticular recording material F is not particularly limited, similarly to the recording device 10 described above, and any of various known sub-scanning devices such as roller conveyance and conveyance by an exposure table can be applied.

A detecting means 50 for detecting a position index provided on the lenticular recording material F is arranged below the transport path of the lenticular recording material F. A recording position control circuit 54 that transfers the data as an alignment signal to the exposure control circuit 30 is connected.

FIG. 9 is a conceptual diagram when the recording apparatus 60 is viewed from the main scanning direction. The recording device 60 records a three-dimensional image by entering a light beam L from the front side of the lenticular recording material F. Therefore, lenticular sheet C (lens)
In consideration of the curvature of the linear image to be recorded, in accordance with the original image of the linear image to be recorded, that is, according to the recording position of the linear image within one pitch P,
The incident angle of the light beam L on the lenticular recording material F is
It is necessary to change the direction of curvature of the lenticular sheet C (lens) (hereinafter, the incident angle of the light beam L indicates this direction). The recording device 60 in the illustrated example adjusts the incident angle of the light beam L by moving the scanning optical system 64 in a circular shape as shown in FIG.

In the example shown in FIG. 9, the recording device 6
A drive device (not shown) is provided on the back surface of the housing 68 of the scanning optical system 64 of FIG. 9 in FIG. 9, and a moving device of the scanning optical system is configured together with the guide rails 72a and 72b. By making the light beam L movable in the circumferential direction (the direction of the arrow z), the incident angle of the light beam L on the lenticular recording material F can be adjusted without changing the optical path length of the light beam L.

When recording a linear image as shown in FIG. 10, for example, when recording a linear image of each original image in the order of original images a → b → c → d, first, scanning optical The system 64 is arranged at the position indicated by (a) in FIG. 9, and the light beam La modulated according to the linear image information of the original image a is converted into the original image as shown in FIG. 9 (FIG. 10). The lenticular sheet C is incident on the lenticular sheet C at a predetermined angle according to the photographing conditions a, the curvature of the lenticular sheet, and the like, and the lenticular recording material F is conveyed in the sub-scanning direction (the direction of the arrow y) in the sub-scanning direction. The linear images of the original image a are recorded one by one at predetermined positions in P in the order of a ₁ , a ₂ , a ₃ , a ₄ ... As shown in FIG.

Next, the lenticular recording material F is returned to the image recording start position, and the scanning optical system 64 is moved to the position shown in FIG.
(B), the light beam Lb modulated according to the linear image of the original image b is transferred according to the shooting conditions of the original image a while the lenticular recording material F is conveyed in the sub-scanning direction. Incident on the lenticular sheet C at a predetermined angle.
0, the linear image of the original image b is represented by b ₁ , b ₂
... Are sequentially recorded. When the recording of the linear image of the original image b is completed, the scanning optical system 64 is moved to the position shown in FIG. 9C, and the lenticular recording material F is conveyed in the sub-scanning direction from the recording start position. The linear image of the original image c is sequentially recorded with the light beam Lc as c ₁ , c _2, ..., And finally, the scanning optical system 64 is moved to the position shown in FIG. The light beam Ld decentered according to the linear image information of the original image d converts the linear image of the original image d into d ₁ , d ₂ .
... are sequentially recorded. That is, in the recording apparatus 60 of the illustrated example, the stereoscopic image is recorded by performing the sub-scanning conveyance four times in total.

In the above-described embodiment, the sub-scanning direction in recording the linear image of each original image is not limited to the direction of the arrow y. For example, the recording of the linear image of the original image a may be performed. May be performed in the direction of arrow y, and then the recording of the linear image of the original image b may be performed by sub-scanning and transporting the lenticular recording material F in the direction opposite to the direction of arrow y. In this case, the recording order of the linear image of the original image b is the same as the previous example (b ₁ , b ₂ ...).
…) And the opposite.

Light beam L for recording a linear image of each original image
The angle of incidence on the lenticular sheet C depends on the curvature of the lenticular sheet C (lens), the recording position of the linear image, the line width of the linear image, the shooting conditions of the original image, and the like. What is necessary is just to determine appropriately so that the linear image of each original image is evenly recorded in D.

The driving device of the scanning optical system 64 is not particularly limited, and various driving sources such as a motor, in particular, a known driving device such as a method of causing the scanning optical system to self-propelled by a driving source such as a pulse motor or the like can be used. I'll do it. The moving means of the scanning optical system 64 for adjusting the angle of incidence of the light beam L on the lenticular sheet C is not limited to the method shown in the illustrated example. Any of various moving means capable of adjusting the incident angle of the light beam L on the lenticular sheet C while maintaining the optical path length of the light beam, such as a method using an arm or the like for rotating the optical system 64 as in FIG. Applicable.

The means for adjusting the angle of incidence of the light beam L on the lenticular sheet C is not limited to the means for moving the scanning optical system in the illustrated example. For example, the mirror or lens may be fixed while the scanning optical system 64 is fixed. A method of adjusting the incident angle and the optical path length (image forming position) of the light beam L by changing the angle of the lenticular recording material F with respect to the light beam L may be used. It is also possible to have a plurality of systems 64 and record a linear image by a separate scanning optical system 64 for each original image.

Also in the recording apparatus 60, similarly to the recording apparatus 10, the lenticular sheet is formed by a method such as adjusting the main scanning direction of the light beam, the conveyance of the lenticular recording material F, and the image recording by the light beam L. It is preferable to record a linear image so that the generatrix direction of C and the main scanning direction coincide.

The (stereoscopic image) recording apparatuses 10 and 60 of the present invention described above are constructed by connecting the image processing means 12 and the image forming means 14 and the like, but the present invention is not limited to this. However, the image information output from the image processing means 12 and the like can be stored on a floppy disk, an optical disk, or the like by separately configuring the image processing means 12 and the image forming means 14 or separately configuring the reading device 18. The image data may be stored in a recording medium, and the linear image information of the original image may be supplied from the recording medium to the image forming unit. The image processing means 12 does not have the reading device 18 in particular, and obtains image information of an original image from an image information source such as a computer, a recording medium such as a floppy disk, a separate reading device such as a scanner, etc. Is also good.

The lenticular lenticular recording material F on which the three-dimensional image has been recorded in this manner is subjected to a development process in accordance with the type of the recording material (photosensitive layer), and becomes a three-dimensional image using the lenticular sheet C. . The antihalation layer AH formed between the recording layer D and the lenticular sheet C or under the recording layer D is of course colorless by the development process. Further, a white layer, a protective layer, etc. may be formed on the back surface of the lenticular lenticular recording material F, if necessary, after the image recording and before and / or after the development processing.

Although the three-dimensional image recording method and three-dimensional image recording apparatus of the present invention have been described in detail above, the present invention is not limited to the above embodiments, and various improvements and modifications can be made without departing from the gist of the present invention. Of course, changes may be made.

[0113]

As described above in detail, according to the stereoscopic image recording method and the stereoscopic image recording apparatus of the present invention, at least the central portion of the linear image carrying the same portion of the main subject of each original image is formed. By arranging the linear images so as to be recorded within the same pitch of the lenticular recording material, the main subject is accurately aligned with the original image and the three-dimensional image is recorded. High-quality stereoscopic image recording can be performed by a simple recording device with a simple operation.

Furthermore, since the image information of the original image is processed and scanned and exposed by a light beam modulated according to the image information to record a three-dimensional image, the configuration of the optical system of the recording apparatus is simple and It is possible to change the recording interval of the linear image, the density, etc., by adjusting the electric image information processing and the simple optical system, and also to easily change and adjust the image recording area and the image density. It can be carried out. Therefore, it is possible to easily cope with an increase / decrease in the number of original images, a change in magnification of a recorded image, image processing such as shading correction, a change in specifications of a lenticular sheet, a change in the size of a recorded image, and the like.

[Brief description of the drawings]

FIG. 1 is a diagram conceptually illustrating an example of a stereoscopic image recording apparatus according to the present invention.

FIG. 2 is a conceptual diagram for explaining a recording position shift of a subject in capturing an original image of a stereoscopic image.

FIG. 3 is a diagram conceptually showing formation of a linear image from an original image in the stereoscopic image recording apparatus of the present invention.

4 is a diagram conceptually showing recording of a linear image on a lenticular recording material in the stereoscopic image recording apparatus shown in FIG.

FIG. 5 is a diagram conceptually showing another example of the stereoscopic image recording device of the present invention.

FIG. 6 is a diagram for explaining a method of correcting a scanning line with respect to a generating line in the stereoscopic image recording apparatus of the present invention.

FIG. 7 is a schematic perspective view showing another example of main scanning and sub-scanning means used in the stereoscopic image recording apparatus of the present invention.

FIG. 8 is a diagram conceptually showing another example of the stereoscopic image recording apparatus of the present invention when viewed from the sub-scanning direction.

9 is a diagram conceptually showing the stereoscopic image recording device shown in FIG . 8 when viewed from the main scanning direction.

10 is a diagram conceptually showing the recording of the linear images of the lenticular recording material in the stereoscopic image recording apparatus shown in FIG.

FIG. 11 is a diagram showing image recording on a conventional lenticular recording material.

FIG. 12 is a diagram showing the principle of stereoscopic viewing of an image recorded on a lenticular recording material.

[Explanation of symbols]

 10, 60 stereoscopic image recording device 12, 62 image processing means 14 image forming means 18 reading device 20, 66 linear image processing device 28 main subject 30 exposure control circuit 32 (32R, 32G, 32B) light source 34 polygon mirror 36 (36R) , 36G, 36B) Modulating circuit 38 (38R, 38G, 38B) Driving circuit 40 (40R, 40G, 40B) Shaping means 42, 44 Dichroic mirror 46 Mirror 48 fθ lens 49 Falling mirror 50 Detecting means 54 Recording position control circuit 58 Drum 68 Housing 70 Reflecting mirror 72a, 72b Guide rail C Lenticular sheet D Recording layer F Lenticular recording material

Claims (2)

(57) [Claims] When recording a plurality of original images from different viewpoints on a lenticular recording material having a recording layer disposed on the back side of a lenticular sheet, image information of the plurality of original images and main information of each original image are recorded. obtaining subject information, and the linear image by dividing each original image, the original
A linear image carrying at least the central part of the main subject of the image
Within the same pitch of the lenticular recording material, and complete
When viewing the created stereoscopic image from the lenticular sheet side
Arrange the linear images of each of the original images so that they look correct
And determining the recording position on the recording layer and, as the image information to be recorded on the lenticular recording material, a stereoscopic image by scanning exposure of the lenticular recording material by a light beam modulated in accordance with image information A stereoscopic image recording method characterized by recording. 2. A three-dimensional image recording apparatus for recording a plurality of original images from different viewpoints on a lenticular recording material having a recording layer disposed on the back side of a lenticular sheet, wherein the image information of the plurality of original images is provided. Means for obtaining main subject information of each original image and dividing each original image into linear images to be recorded, and at least the center of the main subject of each original image
Part of the linear image bearing the lenticular recording material
Lenticular the finished stereoscopic image within the pitch
Each of the above items should be displayed correctly when viewed from the seat side.
Arrange the linear images of the original image to determine the recording position on the recording layer.
Has a determining means, image processing means for outputting as a linear image information, the modulated light beam emitted in accordance with the linear image information outputted from said image processing means, the generatrix direction of the lenticular sheet Means for one-dimensionally deflecting the light beam in the same main scanning direction; and a means for relatively moving the lenticular recording material and the light beam deflected in the main scanning direction in a sub-scanning direction substantially orthogonal to the main scanning direction. A three-dimensional image recording apparatus, comprising: an image forming means for exposing a recording layer of a lenticular recording material by the light beam; and a means for positioning an image on the lenticular recording material.