JP2000098948A - Image display using lenticular sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image display which allows the observation of bright stereoscopic images and changing and animation images over a wide range without an odd feel by eliminating the crosstalks at the time of the observation induced by the 'unsharpness' and 'dot smear' induced by an output machine of the image display using a lenticular sheet. SOLUTION: This image display is constituted by building and arraying the images extracting the portions where there are no image changes into the array of the sampling images 20 in a stereoscopic animation or changing image display system consisting of the lenticular sheet 10 and the sampling images 20 synthesized by using the plural images. For example, the image display has the sampling images synthesized by allocating (1) to 20a, (4) to 20b, (2) to 20c, (4) to 20d and (3) to 20e.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display using a lenticular sheet, and more particularly to an image synthesizing technique for arranging and combining sampling images provided under a lenticular sheet.

[0002]

2. Description of the Related Art A conventional method of synthesizing a sampled image is as follows.
A method using a special camera and a turntable (turntable synthesis method) or a split synthesis method is used. That is, the former is a special camera having a mechanism in which a subject placed on a turntable is brought into close contact with a lenticular sheet on a photographic film surface, and the amount of rotation of the turntable and the lenticular sheet are laterally moved with a certain relationship. A sampling image having parallax is synthesized.

In the latter divisional synthesis method, an image photographed from multiple directions is stretched as a manuscript while a lenticular sheet is brought into close contact with the photographic film surface, the first manuscript is exposed by a camera or the like, and then the lenticular sheet is exposed. To expose the second original. A sampling image having parallax information is synthesized by sequentially repeating this process.

[0004] A stereoscopic image can be observed by superimposing a lenticular sheet with a matching lens pitch on the sampling image thus synthesized.

Also, by using a plurality of different images in a similar manner and synthesizing sampling images without using an original having parallax, a changing or animation display image in which a display image changes depending on a viewing position is created. it can.

In such a conventional method of synthesizing a sampled image, since the sampled image is always synthesized through the lens group of the lenticular sheet, an image matching the lens pitch of the lenticular sheet can be obtained.

However, in recent years, with the development of computers, it is said that it is desired to use an image of a virtual object drawn on a CRT by computer graphics (CG) on an image display using a lenticular, for example, an object other than an existing object due to the development of computers. Needs are emerging. In addition, a need has arisen for a computer to capture and process a digital image of a subject captured by a digital camera. Therefore, unlike the conventional image synthesizing method, instead of synthesizing the sampling image through the lens group of the lenticular sheet, the digital data of the computer graphic image and the digital camera image is subjected to image processing, and the lenticular sheet used for the image display is processed. The need to combine and output the combined sampling images has also increased.

In the conventional image synthesizing method, as described above, since the image is synthesized through the lens group of the lenticular sheet, there is a problem that a clear image cannot be created due to "blur" due to lens aberration and the like. . On the other hand, the method of image processing digital data and outputting it with an output device (printer) has a problem that a clear image cannot be similarly created because "dot bleeding" of the output device (printer) is inevitable. .

[0009]

SUMMARY OF THE INVENTION The present invention eliminates crosstalk during observation caused by the above-mentioned "blur" and "dot bleeding" in an image display using a lenticular sheet, and provides a clear, uncomfortable and wide-ranging image. It is an object of the present invention to provide an image display capable of observing a stereoscopic image, a changing image, and an animation image.

[0010]

According to a first aspect of the present invention, there is provided a stereoscopic, animation or changing image display system comprising a lenticular sheet and a sampling image synthesized using a plurality of images. An image display using a lenticular sheet, wherein an image obtained by extracting a portion having no image change in an image arrangement is incorporated and arranged.

According to a second aspect of the present invention, there is provided an image display display using the lenticular sheet according to the first aspect, wherein the sampling images are embedded and arranged by digital image processing.

Image processing is performed on a CG image or a digital camera image to synthesize a sampling image, and a lenticular sheet is superimposed on the sampling image, or the sampling image is output directly on the flat back surface of the lenticular sheet. Can be displayed. However, “fogging” occurs due to “bleeding” of dots constituting the sampling image output by the printer, and simply arranging the images results in a display image with a lot of crosstalk. Therefore, it is necessary to appropriately arrange the images that do not change in the printer image in the composite image, and to optimize the images. Crosstalk refers to a phenomenon in which, when observing a display, different sampling images are viewed at the center and at the end of the display, blurring parallel to the lenticular lens occurs, and the display becomes unnatural.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1A is a cross-sectional view showing a positional relationship between a lenticular sheet (10) and a sampling image (20), and FIG. 1B shows an example of an original image for describing the present invention described below.

Now, a rectangle (Y) as shown in FIG.
A description will be given of a case where the image is a combination image of a circle (X) and three circles (X) whose positions have changed in the right direction with respect to the rectangle (Y). The image is a circle (X) located on the left side of the rectangle (Y), the image is a circle (X) at the center of the rectangle (Y), and the image is an image with the circle (X) located on the right side of the rectangle (Y). Is shown. In the case of stereoscopic display, a stereoscopic image in which the amount of movement of the circle (X) is parallax is obtained, and in the case of changing or animation, a display image in which the circle (X) moves and changes is obtained.

Conventionally, when synthesizing a sampling image using three images, as shown in FIG. 2, the lens pitch (P) of the lenticular sheet is divided into three equal parts (20f, 20f).
g, 20h), and 20f shows the image of FIG.
The image of FIG. 1B is arranged in g, and the image of FIG. 1B is arranged in 20h. However, due to the “bleeding” of the printer, “fogging” occurs near the boundary of the image, and crosstalk occurs, causing a loss of sharpness.

To avoid this phenomenon, the lens pitch (P) is divided into five equal parts (20a, 20b, 2) as shown in FIG.
0c, 20d, 20e), 20a is the image of FIG. 1 (B), 20b is the image of FIG. 1 (B), and 20c is the image of FIG.
The image of FIG. 1B and the image of FIG.
1B is allocated and arranged to synthesize a sampling image. FIG. 1A illustrates one lens pitch portion, but an image is formed with another lens pit in a similar configuration. Here, the image is a sampling original image in which a portion having no change is extracted from the three images to be synthesized, and only a rectangle (Y) is extracted.

Alternatively, the image of FIG.
The image of FIG. 1 (B) is shown at 20b, and the image of FIG. 1 (B) is shown at 20c.
1B, the image of FIG. 1B is assigned to 20d, the image of FIG. 1B is assigned to 20e, and the sampled image may be synthesized. Alternatively, as shown in FIG. ) Is divided into 10 (20α, 20β, 20γ, 20
δ, 20ε, 20 °, 20η, 20θ, 20ι, 20
κ), and 20α and 20β contain the image of FIG.
1 (B) for γ and 20δ, the image of FIG. 1 (B) for 20ε and 20 °, the image of FIG. 1 (B) for 20η and 20θ, and the image of FIG. 1 (B) for 20ι and 20κ. May be allocated and the sampling images may be synthesized.

As described above, by incorporating an image obtained by extracting an unchanged portion of the image at an appropriate position of the sampling image, a clear image can be provided without generating unnecessary noise.
It is possible to produce an image display that is easily viewed.

The number of sampled images and the array combination are not limited to the above, but are limited to the number of sampled images to be synthesized in one lens pitch (p), image characteristics, output capability of a printer, lens shape of a lenticular sheet (pitch p). , The radius of curvature R) and the like.

[0020]

According to the present invention, by arranging and optimizing an image obtained by extracting a portion having no image change in the array of sampling images and optimizing the image, it is possible to provide an image display display which is close to natural vision without crosstalk and can be viewed over a wide range. .

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a configuration of an image display using a lenticular sheet of the present invention, and FIG.
Is one of the synthesis methods in which sampling images are embedded and arranged.
An example is shown, and (B) shows an example of an original image used at the time of composition.

FIG. 2 is a cross-sectional view illustrating a conventional method of synthesizing a sampling image.

FIG. 3 is a cross-sectional view showing another embodiment of the synthesizing method according to the present invention in which sampling images are embedded and arranged.

4A and 4B are external views of an image display using a lenticular sheet, wherein FIG. 4A is a perspective view and FIG. 4B is a cross-sectional view.

[Explanation of symbols]

10 Lenticular sheet 20 Sampling images 20a to 20h, 20α to 20κ Area where the lens pitch is divided and the original image is sampled and synthesized. p ... Lens pitch

Claims (2)

[Claims] In a three-dimensional, animation or changing image display system comprising a lenticular sheet and a sampling image synthesized using a plurality of images, an image obtained by extracting a portion having no image change in an array of the sampling images is incorporated. An image display using a lenticular sheet, which is arranged. 2. An image display using a lenticular sheet according to claim 1, wherein said sampling images are embedded and arranged by digital image processing.