JP2001109088A - Method for forming compressed image for image display using lenticular lens, adjusting method for forming compressed image, and compressed image forming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make the pitch of a compressed image to be formed match with the pitch of a lenticular lens accurately as a whole. SOLUTION: A printer for forming the compressed image FP on a recording medium by lines parallel to a 1st scanning direction and forming plural compressed images FP by continuously arranging the lines at a prescribed pitch along a 2nd scanning direction orthogonal to the 1st scanning direction is used, and plural compressed images FP are preliminarily formed on the recording medium so that adjacent compressed images FP may be visually different from each other, then, the lenticular lens LL is mounted on the compressed images FP preliminarily formed on the recording medium so as to observe a moire ME, and then, the pitch in the 2nd scanning direction in the printer is adjusted in accordance with the state of the moire ME, and the pitch is adjusted so that the moire ME may be reduced, thereafter, the compressed images are regularly formed on the recording medium.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a compressed image for displaying an image using a lenticular lens, an adjusting method for producing the compressed image, and a producing apparatus.

[0002]

2. Description of the Related Art Conventionally, stereoscopic photography using a lenticular lens has been widely used. This allows a plurality of compressed images formed on a recording medium to be viewed three-dimensionally by observing the images through a lenticular lens, or to allow different images to be viewed depending on the viewing angle. Things.

[0003] As a method for forming a compressed image, a method in which a film on which a plurality of original images having parallax are formed and which is formed on a photographic paper by photographic printing via a lenticular lens has been conventionally adopted. In such a method, a method is often adopted in which a compressed image is prepared in advance as image data on a computer by a computer, and the image is printed on paper by a printing apparatus based on the image data.

In the latter method using a computer, the size of a compressed image is determined according to the size (pitch) of a lenticular lens used for observation and the number of compressed images.

[0005]

In order to make a stereoscopic picture look clear and clear, it is necessary to accurately match the pitch of the compressed image printing by the printing apparatus with the pitch of the lenticular lens. There is.

However, since the lenticular lens is usually manufactured by molding using plastic, an error occurs between the design pitch and the actual product pitch. Further, the pitch slightly changes due to expansion and contraction due to temperature change or humidity change.

For this reason, when a lenticular lens is placed on a compressed image produced by a printing apparatus, the lenticular lens and the compressed image are exactly fitted in one part, but are displaced in another part. Become.

Therefore, conventionally, there has been a problem that the pitch of the printing of the compressed image by the printing apparatus and the pitch of the lenticular lens do not exactly coincide with each other, and the stereoscopic photograph cannot be clearly seen.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is possible to match the pitch of a formed compressed image with the pitch of a lenticular lens as accurately as possible over the entirety, so that a stereoscopic photograph or the like can be made more beautiful. It is an object of the present invention to provide a method for producing a compressed image, an adjusting method for producing the compressed image, and a producing apparatus, which can be seen in the above.

[0010]

According to a first aspect of the present invention, there is provided a method of producing a compressed image FP for displaying an image by observing through a lenticular lens LL. Forming one compressed image FP by one or a plurality of lines along the scanning direction, and arranging the lines continuously at a predetermined pitch along a second scanning direction orthogonal to the first scanning direction. A plurality of compressed images FP are formed such that adjacent compressed images FP are visually different from each other by the printing device 3.
Is preliminarily formed on a recording medium, and the lenticular lens L is formed on the compressed image FP preliminarily formed on the recording medium.
L, the moire ME is observed, the pitch in the second scanning direction in the printing device 3 is adjusted in accordance with the state of the moire ME, the adjustment is performed so that the moire ME is reduced, and then the compression is performed. An image is fully formed on a recording medium.

According to a second aspect of the present invention, the printing apparatus 3 pre-forms a plurality of compressed images FP on a recording medium such that adjacent compressed images FP have different colors from each other. Image FP formed preliminarily
The lenticular lens LL is placed on the
Observe E.

According to a third aspect of the present invention, one compressed image is formed on a recording medium by one or a plurality of lines along a main scanning direction, and the lines are continuously arranged in a sub-scanning direction. Using a printing device configured to form a plurality of compressed images by the, by the printing device, so that adjacent compressed images are different colors from each other, pre-formed a plurality of compressed images on a recording medium, The lenticular lens is placed on the compressed image preliminarily formed on the recording medium, and the moire is observed. According to the state of the moire, the condition for feeding the recording medium in the sub-scanning direction in the printing apparatus is adjusted. After making the above adjustments to reduce
A compressed image is formed on a recording medium.

According to a fourth aspect of the present invention, there is provided an adjustment method for producing a compressed image for displaying an image by observing the image through a lenticular lens. Forming one compressed image with one or more lines, using a printing device configured to form a plurality of compressed images by sequentially arranging the lines in the sub-scanning direction, by the printing device, A plurality of compressed images are formed on a recording medium so that adjacent compressed images have different colors from each other, and the lenticular lens is placed on the compressed image formed on the recording medium to observe moiré. The feed condition of the recording medium in the sub-scanning direction in the printing apparatus is adjusted so as to reduce the number of feeds.

According to a fifth aspect of the present invention, there is provided an apparatus for producing a compressed image for displaying an image by observing the image through a lenticular lens. Alternatively, one compressed image is formed by a plurality of lines, and the plurality of compressed images are formed by continuously arranging the lines at a predetermined pitch along a second scanning direction orthogonal to the first scanning direction. A plurality of compressed images are preliminarily formed on a recording medium, and a plurality of compressed images are preliminarily formed on a recording medium so that adjacent compressed images are visually different from each other by the printing device. It has means for detecting the state of moiré when the formed compressed image is observed through the lenticular lens, and means for adjusting the pitch in accordance with the state of moiré.

According to a sixth aspect of the present invention, one compressed image is formed on a recording medium by one or a plurality of lines along the main scanning direction, and the lines are continuously arranged in the sub-scanning direction. And a printing device configured to form a plurality of compressed images by forming a plurality of compressed images on a recording medium such that adjacent compressed images have different colors from each other. Pre-forming means, means for detecting the state of moiré when the compressed image preliminarily formed on the recording medium is observed through the lenticular lens, and the recording medium in the printing apparatus according to the state of moiré. Means for adjusting a feed condition in the sub-scanning direction;
Having.

Moire is caused by a slight difference in pitch between the compressed image FP and the lenticular lens LL, for example, a difference in their phases. Usually, the difference between the pitches cannot be accurately measured by a measuring device in many cases. Even if there is such a slight difference in pitch, it is possible to detect it by observing moiré.

According to the first aspect of the present invention, a plurality of compressed images FP are preliminarily formed on a recording medium, and by observing moire ME generated by the compressed images FP and the lenticular lens LL, such a slight difference in pitch is obtained. Is detected, and the pitch of the printing apparatus 3 in the second scanning direction is adjusted in accordance with the state, whereby the pitch of the compressed image FP and the pitch of the lenticular lens LL are adjusted as accurately as possible over the entirety. is there.

In this specification, the term "compressed image" refers to an image or a diagram observed through a lenticular lens. A "compressed image" is originally an image to be observed that is compressed in the width direction in order to be placed under a lenticular lens.However, at present, as computer image processing technology or image creation technology has advanced, The original image itself is not always necessary, and the process of "compression" is not always performed. Therefore, in the present specification, an image that has not been subjected to the process of “compression” is referred to as a “compressed image” if it is observed through a lenticular lens.

For example, it is possible to directly create a "compressed image" by performing image processing or image processing by a computer without performing "compression" processing. Also, a “compressed image” is just a single line,
It may be two or three lines.

[0020]

FIG. 1 is a view showing an example of a printing apparatus 3 used in a manufacturing method according to the present invention. In FIG. 1, a printing apparatus 3 includes a main body 11, an image memory 12, an exposure unit 13, a donor supply unit 14, a paper supply unit 15, a transfer drum 16, cutters 17, 18, a water application unit 19, and feed rollers 21, 22,. Peeling roller 2
3 and 24, discharge rollers 25 and 26, a control device 31, and the like.

Image data created by a computer (not shown) is temporarily stored in the image memory 12. Based on the image data stored in the image memory 12, the laser beam from the exposure unit 13
The surface of N is exposed, and an image (latent image) is formed thereon.

The donor DN is sent out from the donor supply unit 14, cut into a predetermined size by a cutter 17, conveyed to an exposure position, and subjected to exposure while being moved at a predetermined speed by a feed roller 21. The donor DN that has undergone exposure once moves away from the exposure position, moves in the opposite direction, and passes through the water application unit 19 so that water is applied to its surface.

On the other hand, the paper PP is supplied to the paper supply unit 15.
After being cut out to a predetermined size by the cutter 18, it is attached at the position of the feed roller 22 in synchronization with the donor DN, and wound around the transfer drum 16. The transfer drum 16 is heated by a heater, and the image formed on the donor DN is transferred to the paper PP by heat.
Is developed and transferred.

After the transfer onto the paper PP, the donor DN is peeled off from the paper PP by the peeling roller 23 and is discharged by the discharge roller 25. The paper PP is
The transfer roller 16 is separated from the transfer drum 16 by a separation roller 24,
The sheet is discharged by the discharge roller 26. These overall operations and processes are controlled by the control device 31.
The control device 31 also controls the rotation speed of the feed roller 21 and controls the exposure unit 13 in the sub-scanning direction (donor DN).
(In the direction along the transport direction). In addition,
A pulse motor for rotating the feed roller 21;
An AC servomotor or a DC servomotor is used.

Various images are formed on the paper PP according to the contents of the image data sent to the image memory 12. For example, when the image data is data of a compressed image of a plurality of images having parallax, a compressed image for a three-dimensional photograph is formed on the paper PP. In the case of a compressed image of a plurality of different images, a compressed image for viewing different images depending on the observation angle is formed. If the data is a normal image, the normal image is formed. A method for creating such image data and a method for forming an image using the image data itself are known.

In the present embodiment, the image memory 12 stores image data corresponding to a compressed image such that adjacent compressed images have different colors. Below, 3 under one lenticular lens
The case where three compressed images are formed will be described as an example.
However, four or more compressed images may be formed.

FIG. 2 is an enlarged view showing an example of a preliminary compressed image FP formed on the paper PP, and FIG.
FIG. 4 is an enlarged cross-sectional view showing a state where a lenticular board LLT composed of a large number of lenticular lenses LL is placed on a sheet PP on which sheets are formed, and FIG. 4 is a compressed image FP on the sheet PP.
FIG. 7 is a diagram illustrating a state in which moiré ME is generated by the lens and the lenticular lens LL.

As shown in FIG. 2, on the surface of the paper PP,
Preliminary compressed images FPa, FPb, FPc of three colors
Is formed. The colors of these compressed images FPa, b, and c are, for example, red, blue, and green.

In FIG. 3, each lenticular lens L
Below L, three compressed images FP are arranged correspondingly. In a case where three compressed images FP are arranged exactly for each lenticular lens LL, a stereoscopic photograph looks beautiful.

That is, the pitch (width) PL of the lenticular lens LL and the width P of the three compressed images FP
When Fa matches, each lenticular lens L
Three compressed images FP are exactly arranged for L. In that case, the width dimension PFa is three times the pitch PF between the compressed images FP.

However, the angle of the line of sight of the observer with respect to the lenticular lens LL when viewing a stereoscopic photograph is
In order to correct the difference between the center and the end of the image, or to prevent the adjacent compressed images FP from being mixed, the pitch PF or the width dimension PFa is intentionally changed, or May be made larger or smaller, but the state before such correction is described here. Further, in the present embodiment, the description will be made assuming that it is an ideal state in which such correction is not required. Therefore, applying such correction to the present embodiment can be arbitrarily performed as necessary.

In the example shown in FIG. 3, the width dimension PFa of the three compressed images FP is slightly smaller than the pitch PL of the lenticular lens LL. Therefore, the compressed images FP arranged below each lenticular lens LL are slightly shifted according to the lenticular lens LL, and three compressed images FP having different arrangement orders are arranged below the lenticular lens LL at a constant cycle. Will be done.

The lenticular board LLT shown in FIG.
To the sheet P shown in FIG. 4B on which the compressed image FP is formed.
The photo TP shown in FIG. By displacing the lenticular lens LL and the compressed image FP with each other, their directions and positions are matched. When they completely match, the entire surface of the photograph TP looks solid. However, the directions can match, but the positions do not completely match because the width dimension PFa of the three compressed images FP is slightly smaller than the pitch PL of the lenticular lens LL. Therefore, moire ME is generated on the surface of the photograph TP as shown in FIG.

The moiré ME typically has a plurality of colors,
It looks like a color striped pattern with a certain width around any of the three colors. Since the lenticular lens LL and the compressed image FP are not actually perfectly straight lines, the respective stripes of the moiré ME are not straight lines but may be distorted, curved, or annular. The greater the displacement between the lenticular lens LL and the compressed image FP, the greater the number of moire ME stripes. For example, when the compressed image FP under the lenticular lens LL is shifted by one pitch PF, one stripe is generated there. Therefore, the size of the deviation between the pitch PL of the lenticular lens LL and the pitch PF of the compressed image FP can be known from the number of stripes of the moiré ME. Further, the magnitude relationship between the pitch PL and the pitch PF can be known from the order in which the colors of the stripes of the moire ME appear.

Therefore, the rotation speed of the feed roller 21 is adjusted by the control device 31 according to the state of the moiré ME.
Alternatively, the exposure speed in the sub-scanning direction by the exposure unit 13 is adjusted.

There are various methods for this adjustment. For example, a knob for changing the rotation speed of the feed roller 21 is adjusted by turning. Data indicating the rotation speed of the feed roller 21 is newly input and updated. Or, input variable data. At this time, the unit of the input is expressed as a ratio to the current speed, or the image density (dp
i). For example, if the speed is 0.0
It varies every 1 percent or every 0.1 percent. Alternatively, it changes every 0.2 dpi and every 1 dpi. It is also possible to enter by anonymous number. It is also possible to keep the rotation speed of the feed roller 21 constant and vary the exposure speed of the exposure unit 13 in the sub-scanning direction in a similar manner. Such a command can be input from a computer connected to the printing device 3.

By performing the adjustment, the stripes of the moire ME are eliminated or the number of stripes is reduced. Such adjustment may be performed only once or may be performed multiple times. After making adjustments, based on the original image data,
The compressed image is formed. Then, the formed compressed image matches the lenticular lens LL, and the resulting photograph TP looks clear with a clear image.

When the photograph TP is a three-dimensional photograph, the original three-dimensional effect can be enjoyed by a clear three-dimensional image. When the photograph TP is a compressed image of a plurality of different images, when viewing an image at a certain observation angle, a clear image can be seen without ghosting of another image.

When a plurality of printing devices 3 are used, adjustment is performed using one printing device 3, and the adjustment value is used or a value obtained by adding a device error to the adjustment value is used. By controlling the other printing apparatuses 3, a large number of compressed images FP easily adjusted for the same type of lenticular board LLT can be formed in a short time.

FIG. 5 is a diagram showing an example of the relationship between one line of the exposure unit 13 by the laser beam and the compressed image FP.
As shown in FIG. 5A, one compressed image FP can be formed by one line in the main scanning direction by laser light. Also, as shown in FIG. 5B, one compressed image F is formed by two lines in the main scanning direction by laser light.
P can also be formed. Further, one compressed image FP is formed by three or more lines in the main scanning direction by laser light.
Can also be formed.

Further, instead of forming the compressed image FP along the main scanning direction of the laser light, the compressed image FP can be formed along the sub-scanning direction of the laser light. In this case, the pitch PF of the compressed image FP is determined according to the speed in the main scanning direction (pixel pitch in the main scanning direction). For example, the clock frequency may be adjusted.

In the above embodiment, the preliminary compressed images FPa, FPb, and FPc have different colors, but may have different densities or patterns instead of colors. The preliminary compressed image FP may be formed not on the entire surface of the sheet PP but on a part of the sheet PP, for example, a portion along the lower side, or may be formed on the same surface as the original compressed image.

In the above embodiment, the compressed image FP
The lenticular board LLT is placed on the paper PP on which is formed, and the moiré ME at that time is visually detected. However, it is configured to perform these steps automatically, and automatically based on the detection result. To the control device 31,
The preliminary formation and the main formation of the compressed image may be automatically performed.

In this case, for example, a plurality of compressed images FP are arranged so that adjacent compressed images FP have different colors.
Preliminarily forming part on a sheet of paper, and a lenticular lens L for forming a compressed image FP preliminarily formed on the sheet of paper.
What is necessary is just to provide a detection part which detects the state of the moire ME when observed through L, a speed control part which adjusts the feed condition (speed etc.) of the paper in the sub-scanning direction according to the state of the moire ME. These can be realized by a camera such as a CCD, a RAM or a ROM storing an appropriate program, a CPU executing the program, other elements and devices. By including these circuits and devices, a manufacturing apparatus according to claim 5 or 6 is configured.

In the above-described embodiment, an example is described in which the printing unit 3 of the type in which the exposure unit 13 exposes the donor DN is used, but the invention is not limited to this. For example, an image is formed on a donor DN by a thermal head,
Uses various types of printing devices, such as those that form images on plain paper or glossy photographic paper using an electrophotographic process, those that form images on plain paper or glossy photographic paper using an inkjet or thermal head It is possible.

In the printing device 3, the control device 31
The rotation speed and the like of the feed roller 21 can be controlled by the control unit, and the pitch PF of the compressed image FP can be variably adjusted.
For example, it is possible to actually measure the pitch PL of the lenticular lens LL and control the pitch PF of the compressed image FP corresponding to the actually measured pitch PL.

In the above-described embodiment, paper PP or the like is used as a recording medium, but a film for an overhead projector or another film may be used. In addition, compressed image FP or lenticular board LLT
The type, number, color, size, configuration or operation method of the printing apparatus 3 can be appropriately changed in accordance with the gist of the present invention.

[0048]

According to the present invention, it is possible to match the pitch of the formed compressed image with the pitch of the lenticular lens as accurately as possible as a whole, and it is possible to see a stereoscopic photograph and the like more clearly.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an example of a printing apparatus used in a manufacturing method according to the present invention.

FIG. 2 is an enlarged view showing an example of a preliminary compressed image formed on a sheet.

FIG. 3 is an enlarged cross-sectional view showing a state in which a lenticular board including a large number of lenticular lenses is placed on a sheet on which a compressed image is formed.

FIG. 4 is a diagram illustrating a state in which moire is generated by a compressed image on a sheet and a lenticular lens.

FIG. 5 is a diagram illustrating an example of a relationship between one line of the exposure unit using laser light and a compressed image.

[Description of Signs] 3 Printing device FP Compressed image PP Paper (recording medium) LL Lenticular lens ME Moiré

Claims (6)

[Claims] 1. A method for producing a compressed image for displaying an image by observing through a lenticular lens, comprising the steps of: forming one compressed image on a recording medium with one or a plurality of lines along a first scanning direction; A printing device configured to form an image and to form a plurality of compressed images by sequentially arranging lines at a predetermined pitch along a second scanning direction orthogonal to the first scanning direction. By the printing device, a plurality of compressed images are preformed on a recording medium so that adjacent compressed images are visually different from each other, and a plurality of compressed images are formed on the preliminarily formed compressed images on the recording medium. The lenticular lens is placed and the moire is observed. According to the state of the moire, the pitch in the second scanning direction in the printing apparatus is adjusted, and the adjustment is performed so that the moire is reduced. And forming a compressed image on a recording medium. A method for producing a compressed image for image display using a lenticular lens. 2. A method of producing a compressed image for displaying an image by observing through a lenticular lens, wherein one or more lines are formed on a recording medium by one or a plurality of lines along a first scanning direction. A printing device configured to form an image and to form a plurality of compressed images by sequentially arranging lines at a predetermined pitch along a second scanning direction orthogonal to the first scanning direction. A plurality of compressed images are preliminarily formed on a recording medium by the printing apparatus so that adjacent compressed images have different colors, and the lenticular lens is formed on the preliminarily formed compressed images on the recording medium. To observe the moire, adjust the pitch of the printing apparatus in the second scanning direction according to the state of the moire, perform the adjustment so as to reduce the moire, and then execute the compressed image. A method for producing a compressed image for image display using a lenticular lens, wherein the method comprises: 3. A method for producing a compressed image for displaying an image by observing through a lenticular lens, wherein one compressed image is formed on a recording medium by one or more lines along a main scanning direction. Forming and using a printing device configured to form a plurality of compressed images by sequentially arranging the lines in the sub-scanning direction, by the printing device, so that adjacent compressed images have different colors from each other Preforming a plurality of compressed images on a recording medium, placing the lenticular lens on the preliminarily formed compressed images on the recording medium, observing moire, and controlling the printing apparatus according to the state of moire. Adjusting the feed condition of the recording medium in the sub-scanning direction, performing the adjustment so as to reduce moire, and then forming a compressed image on the recording medium. The method for manufacturing a compressed image for image display using Chi sieve lens. 4. An adjustment method for producing a compressed image for displaying an image by observing through a lenticular lens, wherein the method comprises the steps of: providing one or more lines along a main scanning direction on a recording medium; Forming a plurality of compressed images by forming one compressed image and forming a plurality of compressed images by sequentially arranging lines in the sub-scanning direction. A plurality of compressed images are formed on a recording medium so that moire is observed by placing the lenticular lens on the compressed image formed on the recording medium. An adjustment method for producing a compressed image for image display using a lenticular lens, comprising adjusting a feed condition of a recording medium in a sub-scanning direction. 5. An apparatus for producing a compressed image for displaying an image by observing through a lenticular lens, wherein one or more lines along one or more lines along a first scanning direction are formed on a recording medium. A printing device configured to form an image and to form a plurality of compressed images by sequentially arranging lines at a predetermined pitch along a second scanning direction orthogonal to the first scanning direction; Means for preforming a plurality of compressed images on a recording medium by the printing device so that adjacent compressed images are visually different from each other; A means for detecting a state of moiré when observed through a lens; and a means for adjusting the pitch in accordance with the state of moiré. The image display apparatus for producing compressed images for using's. 6. A compressed image producing apparatus for displaying an image by observing through a lenticular lens, wherein one compressed image is formed on a recording medium by one or a plurality of lines along a main scanning direction. And a printing device configured to form a plurality of compressed images by sequentially arranging the lines in the sub-scanning direction, and by the printing device, adjacent compressed images have different colors from each other. Preforming means for preliminary forming a plurality of compressed images on a recording medium; and means for detecting a state of moiré when the compressed images preliminarily formed on the recording medium are observed through the lenticular lens. Means for adjusting the feed condition of the recording medium in the sub-scanning direction in the printing apparatus in accordance with the state of the moiré, and a lenticular lens comprising: The apparatus for producing compressed image for image display are.