JPH06282018A - 3D photography - Google Patents

Abstract

(57) [Summary] [Objective] Regardless of the subject, it is possible to obtain a stereoscopic photograph that exhibits a good stereoscopic effect extremely simply and in a short time without performing complicated wet chemical treatment. [Structure] A subject is read by an image reading means to form an image signal, and the image signal is subjected to image processing to generate a pseudo three-dimensional image signal in which an image of the subject viewed through the lenticular lens 3 becomes three-dimensional. After a pseudo three-dimensional image is recorded on the dye receiving layer 5 of the recording body 4 of the sublimation type thermal transfer recording system by using a signal, the lenticular lens sheet 3 is attached on the dye receiving layer 5 of this recording body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for easily producing a three-dimensional photograph by a sublimation type thermal transfer recording system.

[0002]

2. Description of the Related Art Conventionally, a method for producing a three-dimensional photograph by silver salt photography using a lenticular lens has been known.
According to this known method, an object such as a landscape or a person is first photographed a plurality of times while moving the camera in the horizontal direction by a predetermined distance, and a series of a plurality of silver halide negative films is prepared. Next, on a silver salt printing material for stereoscopic photography having a lenticular lens sheet attached to the surface thereof, a strip-shaped image compressed by the lens is continuously formed below each lens of the lenticular lens sheet, as described above. Using a series of negative films, the positions of the respective negative films and the printing material in the parallel direction are made to differ by a constant distance for exposure. After that, the three-dimensional photograph is obtained by developing the printing material.

In this known method, since a series of negative films is created by shooting a subject in series, there is a drawback that a stereoscopic photograph obtained for a moving subject becomes unclear. As a method for solving this drawback, JP-A-2-29
There is one disclosed in Japanese Patent No. 3733. In this method, a three-dimensional photograph can be obtained from a single still image of a subject. In this manufacturing method, a silver salt photosensitive material is used. It required a chemical process, and required a long time and many steps.

[0004]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to make it possible to obtain a three-dimensional photograph very easily in a short time.

[0005]

This problem is solved by reading a subject with an image reading means into an image signal, subjecting this image signal to image processing, and the image of the subject seen through a lenticular lens becomes stereoscopic. Make an image signal,
After recording a pseudo three-dimensional image on the dye receiving layer of the recording material of the sublimation thermal transfer recording system using this pseudo three-dimensional image signal,
This can be solved by a method of laminating a lenticular lens sheet on the dye receiving layer of this recording medium.

An example of the present invention will be described in detail below. First, the subject is read by the image reading device to obtain an image signal. If the subject is an actual person or object, it is shot using a normal video camera. Also, if the subject is a photograph, printed matter,
An image signal can be obtained by using a scanner in the case of an illustration or the like. It is sufficient that this image signal is a still image of one frame. Next, the image signal of this one frame is input to the image processing apparatus, image processing is performed, and the pseudo stereoscopic image signal is combined.

This image processing is roughly composed of two steps. In the first step, a plurality of images in which the positions of the images to be three-dimensionally displayed are relatively different are combined. For example, it is assumed that the image of the subject is an illustration as shown in FIG. 1, the car 1 and the tree 2 in the illustration are three-dimensionally raised, and the car 1 is displayed in front of the tree 2. In this example, the area of the automobile 1 and the area of the tree 2 in the image are extracted by the extraction operation, and the images are horizontally moved slightly in one of the left and right directions on the screen to synthesize a plurality of images. To do. At this time, it is preferable that the amount of movement of the portion of the automobile 1 in the front is larger than the amount of movement of the tree 2.
If the amount of movement of the car 1 is 1 mm, for example, trees 2
The moving amount of the part is 0.5 mm. The plurality of composite image signals obtained in this way, in which the positions of the subject are different from each other in the horizontal direction, are further image-processed in the second step, but are stored in the image memory as necessary and read appropriately. You may make it available.

In the second step, a pseudo three-dimensional image is synthesized based on the above-mentioned plurality of synthetic image signals so that the image when passing through the lenticular lens can be visually recognized. This synthesizing operation is performed by sequentially exposing a single printing material to which a lenticular lens sheet is attached using a series of negative films in the conventional manufacturing method, and performing multiple exposures,
This corresponds to an operation of developing this to form a pseudo three-dimensional image on one printing material.

Specifically, first, one composite image is subdivided in the vertical direction at narrow intervals to form strip-shaped pixels.
Then, the pixel is compressed by an amount corresponding to the displacement amount compressed by the lenticular lens to form a processed pixel, and the image is moved by an amount corresponding to the horizontal movement amount of the processed pixel by the lenticular lens. The operation of storing the processed pixel in one frame of the memory is sequentially performed for all the pixels of one composite image. Then, the above-described operation is similarly performed for each of a plurality of composite images, the processed pixels are sequentially stored in the same frame of the memory, and the target pseudo three-dimensional image signal is composed. Thus, the image processing apparatus outputs the pseudo stereoscopic image signal.
This output signal may be stored in an internal memory, a magnetic tape, a floppy disk, etc., if necessary.

The pseudo stereoscopic image signal is then input to the video printer. This video printer forms an image by transferring a dye to a dye receiving layer of a recording medium by heat from a thermal head or the like by a known sublimation thermal transfer recording system. When the above pseudo stereoscopic image signal is input to this video printer, the video printer draws a pseudo stereoscopic image on the dye receiving layer of the recording medium, and the pseudo stereoscopic image is displayed.

Then, as shown in FIG. 2, the lenticular lens sheet 3 is attached to the dye receiving layer 5 of the recording body 4 on which the pseudo three-dimensional image is formed by an adhesive agent, an adhesive agent 6 or the like to form a three-dimensional image. You can get a picture. As the lenticular lens sheet 3, a large number of semi-cylindrical lenticular lenses made of vinyl chloride resin, acrylic resin, etc. are formed, and the thickness is about 0.1 to 1 mm.
A lens having a lens pitch of about 0.05 to 0.8 mm is used. The optical characteristics of the lens of this lenticular lens sheet 3 are such that when the pseudo three-dimensional image synthesized in the second step of the image processing described above is pasted on the recording medium recorded in the dye receiving layer 5, the recorded image becomes three-dimensional. It is necessary to have a characteristic that looks like.

The sublimation type thermal transfer recording system recording body 4 is not limited in any way, and any recording medium can be used, and a substrate made of paper, synthetic paper, plastic film or the like as shown in FIG. A dye receiving layer 5 is provided on 7 and used. When the base material is transparent, the lenticular lens sheet 3 may be attached to the transparent base material 7 side as shown in FIG. Further, those having an intermediate layer having various functions between the substrate and the dye receiving layer, and those having a back coat on the opposite side of the substrate from the dye receiving layer can also be used.

Further, the constitution of the dye receiving layer 5 of the recording body 4 is not limited to the same.
It is not particularly limited as long as it dyes well with a sublimable dye and does not cause blocking with the transfer sheet during recording,
For example, methyl cellulose, ethyl cellulose, ethyl hydroxy cellulose, hydroxyethyl cellulose,
Cellulose resins such as hydroxypropyl cellulose and cellulose acetate, polyvinyl alcohol, polyvinyl butyral, polyvinyl acetal, polyvinyl acetate, polyvinyl chloride, polyvinyl pyrrolidone, vinyl resins such as polystyrene, polymethyl (meth) acrylate, polybutyl (meth) acrylate , Polyacrylamide,
Acrylate resin such as polyacrylonitrile, polyester resin, polycarbonate resin, polyurethane resin, polyamide resin, urea resin, polycaprolactone resin, polyarylate resin, polysulfone resin, etc., or a copolymer or mixture thereof can be used as a dyeing resin. . Among them, the polyester resin is preferable to be contained as at least one component of the dyeing resin because it is well dyed with a sublimable dye and the storage stability of the obtained image is good.

The dye receiving layer 5 preferably contains a crosslinkable component for the purpose of further improving the releasability between the recording material and the transfer sheet. For example, an isocyanate and a thermosetting component such as a polyol may be contained and thermally crosslinked after the formation of the dye receiving layer, or the inventor of the present invention described in JP-A-62-
As disclosed in JP-A-46689 and JP-A-63-67188, a cross-linking agent curable by active energy rays,
For example, a resin composition containing a monomer and an oligomer having an acryloyloxy group or a methacryloyloxy group may be applied onto a substrate and then cured with an active energy ray to obtain the dye receiving layer 5. In particular, the method of blending a component capable of crosslinking with an active energy ray and curing it with an active energy ray to obtain a dye receiving layer is more preferable because the productivity is high and the gloss of the obtained dye receiving layer is high.

The amounts of the dyeing resin and the crosslinkable component used are not particularly limited, but 40 to 95% by weight of the dyeing resin and 100% by weight of the total of the dyeing resin and the crosslinking component are crosslinked. It is preferable to contain 60 to 5% by weight of the sex component. A resin composition containing a crosslinking agent that can be cured with active energy rays is cured with active energy rays such as electron beams and ultraviolet rays, but when ultraviolet rays are used as the active energy rays, known photopolymerization initiation It is desirable to include an agent. The amount of the photopolymerization initiator used is not particularly limited, but it may be contained in an amount of 0.1 to 10 parts by weight based on 100 parts by weight of the total of the dyeing resin and the crosslinkable component forming the dye amount receiving layer. preferable.

Further, the dye receiving layer 5 preferably contains a fluorine-based or silicone-based release agent for the purpose of further improving the release properties of the dye receiving layer 5 and the transfer sheet.
The amount of the release agent used is not particularly limited, but is 0.01 to 100 parts by weight with respect to the total of 100 parts by weight of the dyeing resin and the crosslinkable component.
It is desirable to contain 30 parts by weight.

Further, the dye receiving layer 5 may contain an inorganic filler such as silica, alumina, talc, calcium carbonate, titanium oxide, zinc oxide or antimony trioxide depending on the purpose of use. Further, in the present invention, the dye amount receiving layer 5 may contain an ultraviolet absorber, a light stabilizer, an antioxidant or the like for the purpose of further improving the light resistance of a recorded image.

In order to produce such a recording material, it is possible to form the dye receiving layer by directly coating the resin composition on the surface of the substrate by a coating method such as roll coating, bar coating or blade coating. is there. But,
In order to improve the workability of the coating work, a solvent capable of dissolving the resin composition, for example, ethyl alcohol, methyl ethyl ketone, toluene, ethyl acetate, dimethylformamide, tetrahydrofuran or the like is added to adjust the coating viscosity to an appropriate level. It is more preferable to carry out. Thereby, spray coating, curtain coating, flow coating, dip coating and the like can be easily performed. When blending these solvents, it is necessary to volatilize and dry the solvent after coating the resin composition.

The dye receiving layer 5 has a film thickness of 0.5 to 100 μm.
m, preferably 1 to 50 μm. If it is less than 0.5 μm, a high recording density cannot be obtained. Further, the recording material may be provided with a layer such as an easy-adhesion layer, an antistatic layer, a whiteness improving layer, or a composite layer combining these functions between the dye receiving layer 5 and the substrate 7. Further, the surface of the recording material opposite to the dye receiving layer can be subjected to treatments such as antistatic treatment, stain prevention, lubricity imparting, and writability imparting.

Further, as the substrate 7, film, paper or synthetic paper is suitable, for example, polyester film, polyethylene film, polypropylene film,
Various plastic films such as polystyrene film, nylon film and vinyl chloride film, and white films obtained by adding white pigments and fillers to these films; paper mainly composed of cellulose fibers such as printing paper, art paper and coated paper;
Examples include papers mainly composed of plastic fibers such as acrylic paper, polypropylene paper, polyester paper, and the like. These papers or films may be used as they are, if necessary, washed, etched, corona discharged,
You may use what was pre-processed, such as active energy ray irradiation, dyeing, and printing. Also, a laminated base material obtained by laminating two or more of the above base materials can be used. The thickness of the base material is not particularly limited, but is preferably about 20 to 1000 μm. Further, as the transparent base material in FIG. 3, a transparent base material among the above-mentioned base materials can be used. The thickness of the transparent substrate of FIG. 3 is 25 to 200 μm, preferably 75 to 150 μm.
It should be about m, and when combined with the film thickness of the dye receiving layer described above, the thickness of the image recorded on the dye receiving layer should be three-dimensionally visible. When a transparent substrate is used, it can be used as a transmission type three-dimensional photograph as it is, but by providing a white or light color hiding layer on the opposite side of the lenticular lens sheet by coating or by bonding a white or light color film. It can also be a reflection-type three-dimensional photograph.

In such a method for producing a three-dimensional photograph, since no conventional silver salt light-sensitive material is used at all, wet chemical treatment is not required at all, and it can be easily produced in an extremely short time and the equipment is small. It's done. Furthermore, there is no limitation on the subject, and a clear stereoscopic photograph can be obtained for any subject. Further, since the pseudo three-dimensional image is obtained by the image processing operation by the computer, it is possible to easily and arbitrarily control the visual effect such as the three-dimensional effect, and it is possible to obtain the one that is rich in attention and design.

Next, another example of the manufacturing method of the present invention will be described.
In this example, first, a plurality of photographed image signals in which the positions of the subject are different from each other are first obtained by taking multiple shots of the subject. For multi-shot shooting, one single-lens video camera is used, the position of the video camera or subject is horizontally moved little by little, and multiple shots are taken, and those image signals are stored separately in individual memories. There is a method of arranging a plurality of lens video cameras at a certain interval, shooting an object with each video camera at the same time, and storing an image signal from each video camera in each memory. The subject in this case is preferably an actual person or landscape, but may be a photograph, a printed matter, an illustration, or the like in some cases.

Then, a plurality of real image signals obtained in this way, in which the positions of the objects are different from each other, are processed by the same operation as the second step of the image processing operation of the previous example to obtain a pseudo three-dimensional image signal. To do. After that, this pseudo-stereoscopic image signal is similarly input to the video printer to display the pseudo-stereoscopic image on the dye receiving layer of the recording material of the sublimation thermal transfer recording system, and then the lenticular lens sheet is similarly attached. The desired stereoscopic photograph can be obtained. The manufacturing method of this example is advantageous for a subject that can be easily photographed.

[0024]

As described above, according to the method for producing a three-dimensional photograph of the present invention, a three-dimensional photograph rich in a three-dimensional effect can be easily produced in a short time regardless of the type of subject.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of an image of a subject in the present invention.

FIG. 2 is a cross-sectional view showing an example of a three-dimensional photograph obtained by the present invention.

FIG. 3 is a sectional view showing another example of a three-dimensional photograph obtained by the present invention.

[Explanation of symbols]

3 ... Lenticular lens sheet, 4 ... Recording material, 5 ... Dye receiving layer

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akifumi Ueda 20-1 Miyukicho, Otake-shi, Hiroshima Mitsubishi Rayon Co., Ltd. Central Research Institute (72) Inventor Kazumi Senda 20-1 Miyukicho, Otake-shi, Hiroshima Central Research Laboratory, Mitsubishi Rayon Co., Ltd.

Claims (4)

[Claims] 1. A subject is read by an image reading means as an image signal, and the image signal is subjected to image processing to generate a pseudo three-dimensional image signal in which an image of the subject viewed through a lenticular lens is three-dimensional. After recording a pseudo three-dimensional image on the dye receiving layer of a sublimation-type thermal transfer recording system using an image signal, a lenticular lens sheet is stuck on the dye receiving layer of this recording medium. Manufacturing method. 2. An image signal obtained by reading the subject is one, a plurality of composite image signals in which the positions of the subject are different from each other are created from the one image signal, and a pseudo stereoscopic image signal is generated from the plurality of composite image signals. The method for producing a three-dimensional photograph according to claim 1, wherein the three-dimensional photograph is produced. 3. The image reading of the subject is performed by multiple shooting to obtain a plurality of image signals in which the positions of the subject are different from each other, and a pseudo three-dimensional image signal is generated from the plurality of image signals. The method for producing a stereoscopic photograph according to 1. 4. A three-dimensional photograph obtained by the method according to any one of claims 1 to 3.