KR100462574B1 - System and method for displaying combination 2D and 3D multi-view image displays and image converting method its - Google Patents

Abstract

The present invention relates to a two-dimensional and three-dimensional multi-view image display system, a method of converting an image thereof, and a computer-readable recording medium having recorded thereon a program for realizing the method. In order to be able to freely observe a two-dimensional image as well as a three-dimensional multi-view image, a known image display device; A convex image display mask attached to the image display device to display a three-dimensional image; And a concave image display mask formed on the convex image display mask, the concave image display mask having opposite characteristics to the convex image display mask such that a focal length becomes infinity for converting a 3D image into a 2D image. It is possible to combine multi-view video display.

Description

System and method for displaying combination 2D and 3D multi-view image displays and image converting method its}

The present invention provides a two-dimensional and three-dimensional multiview image display system capable of displaying two-dimensional images as well as three-dimensional multiview images by converting a three-dimensional (3D) image into a two-dimensional (2D) image, and an image conversion method thereof; A computer readable recording medium having recorded thereon a program for realizing the method.

In general, the biggest factor that humans feel in three dimensions is the effect of the spatial difference on the left and right retinas caused by the left and right eyes looking at an object in one direction. Using this effect, a method of displaying different images, that is, stereoscopic images, in both left and right eyes was used. The stereoscopic image has been developed into a method of wearing glasses and a method of not wearing glasses according to the display method. The most representative method of viewing glasses without glasses is to attach a lenticular plate representing only vertical parallax to the image display device. It is a method of viewing an image, and has been further developed into a multi-view image display mask such as a multi-view or ultra-multi-view IP (Integral Photography) plate, a cross lenticular plate, or a rectangular lens plate.

As such, the 3D display method is divided into a method of observing a 3D image with glasses and a method of observing a 3D image without glasses. First, a method of observing a 3D image wearing glasses is a suitable method for observing an observer without moving in a large space such as a theater, and uses a binocular stereoscopic image display method. In addition, as a method of viewing without wearing glasses, there is a display method using a multi-view image, which gives a feeling that a few observers change their positions and observe objects at different angles.

As a conventional technique that can observe three-dimensional images naturally without wearing glasses, "SPIE, Vol., No. Proc, p4297 ~ 28, 2001 (Optical design and analysis for super multiview three-dimensional imaging system, author: Sungsik Kim VV Saveljev Jungyoung Son) "has a binocular, multi-view, three-dimensional display system. This eliminates the inconvenience of wearing glasses and displays natural 3D images by simply realizing multiviews of 2 or more points of view, reducing eye fatigue and recognizing different images according to the viewing angle, thereby recognizing more realistic 3D images. System. However, it is only possible to observe natural three-dimensional images in various directions, and two-dimensional and three-dimensional combined display are impossible.

On the other hand, as a conventional technique that can view a three-dimensional multi-view image without wearing glasses, in "Korean Patent Application No. 2000-0023181 (multi-view image display system)", in order to indicate not only vertical parallax but also horizontal parallax Multi-view image display masks such as a point light source or an IP plate, a lenticular plate, a cross lenticular plate, or a rectangular lens plate in place of the point light source are used to simultaneously provide horizontal parallax or vertical parallax or vertical and horizontal parallax. However, multi-view image display masks such as IP, lenticular, cross lenticular, or rectangular lens plates are composed of static display media, so that only three-dimensional display is possible, and two-dimensional and three-dimensional display are available. There was an impossible problem.

The present invention has been proposed to solve the above problems, and converts a three-dimensional image to a two-dimensional image to make it possible to freely observe not only the three-dimensional multiview image but also the two-dimensional image according to the situation. And a three-dimensional multi-view image display system, an image conversion method thereof, and a computer-readable recording medium having recorded thereon a program for realizing the method. Other objects and advantages of the present invention are as follows. It can be understood by the description, and will be more clearly understood by the embodiments of the present invention. Also, it will be readily appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

1 is a configuration diagram of an embodiment of a two-dimensional and three-dimensional multi-view image display system according to the present invention.

2 is an explanatory diagram showing the lenticular plate of FIG. 1.

3 and 4 are explanatory views showing the concave lens lenticular plate of FIG.

5 is an explanatory diagram showing the principle of the lenticular of FIG.

FIG. 6 is an explanatory diagram illustrating a principle of displaying a two-dimensional image by combining the concave lens lenticular plate and the lenticular plate of FIG. 1; FIG.

FIG. 7 is an explanatory diagram illustrating a method of converting a 3D image into a 2D image in FIG. 1. FIG.

8 is a detailed configuration diagram of an embodiment of the two-dimensional and three-dimensional multi-view image display system of FIG.

* Explanation of symbols for the main parts of the drawings

a: concave lens lenticular plate b: lenticular plate

c: video display device

In order to achieve the above object, the present invention provides a video display system comprising: a known video display device; A convex image display mask attached to the image display device to display a three-dimensional image; And a concave image display mask formed on the convex image display mask, the concave image display mask having opposite characteristics to the convex image display mask so that a focal length becomes infinity for converting a 3D image into a 2D image.

The present invention provides an image conversion method applied to a two-dimensional and three-dimensional image display system, wherein the focal length is infinite on a convex image display mask attached to an image display device capable of displaying a three-dimensional image. An image display mask forming step of forming a concave image display mask having characteristics opposite to the convex image display mask; An image removing step of removing only the image of one view from the input 3D image and removing the image of the other view; And an image replacement step of generating and replacing an intermediate image by using the image of the viewpoint from which the empty space from which the image is removed is replaced.

Meanwhile, in order to convert a 3D image into a 2D image, the present invention removes only the image of one view from the input 3D image and removes the image of the other view in the 2D and 3D image display system having a processor. Video removal function; And create and replace an intermediate image by using an image of a view in which the empty space from which the image is removed is replaced, but generate an intermediate image by overlapping surrounding images to generate an image of the removed space. A computer readable recording medium having a program recorded thereon is provided.

In addition, the present invention, in order to convert the three-dimensional image to a two-dimensional image, in the two-dimensional and three-dimensional image display system having a processor, leaving only the image of one view from the input 3D image and removes the image of the other view Video removal function; And generating and replacing an intermediate image by using the image of the viewpoint from which the empty space from which the image is removed, but generating an intermediate image by using interpolation to generate an image of the space from which the image is removed. A computer readable recording medium having recorded thereon a program is provided.

The present invention provides a mask such as a binocular or polycular lenticular plate, an IP plate, an intersecting lenticular plate, or a square lens plate, which are composed of convex lenses, and a concave lens lenticular plate, a concave lens IP plate. By simultaneously using a mask such as a concave lens lenticular plate and a concave lens rectangular lens plate, two-dimensional and three-dimensional images can be freely observed.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, whereby those skilled in the art may easily implement the technical idea of the present invention. There will be. In addition, in describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of an embodiment of a two-dimensional and three-dimensional multi-view image display system according to the present invention.

The multi-view image display device (c) using a multi-view image display mask (b) such as a lenticular plate, an IP plate, a cross lenticular plate, or a rectangular lens plate displays a multi-view image, but the masks described above are static. Since it is composed of a medium, two-dimensional image display is impossible.

Therefore, in order to display not only a multi-view image but also a two-dimensional image using the block-shaped multi-view image display mask (b) as described above, in the present invention, the concave having the opposite characteristics to the block-shaped image display mask (b). By attaching an image display mask (a) in the shape, two-dimensional image display is possible.

As shown in FIG. 1, the two-dimensional and three-dimensional multi-view image display system according to the present invention is attached to a known image display device c and an image display device c to display a three-dimensional image. It is formed on the lenticular plate (b) and the lenticular plate (b), so as to have a characteristic opposite to the lenticular plate (b) so that the focal length becomes infinity for converting a 3D image into a 2D image And a concave lens lenticular plate (a).

The two-dimensional and three-dimensional multi-view image display system according to the present invention is a binocular or multi-lens lenticular plate, an IP plate, a cross lenticular plate or a square lens plate on an image display device (c) for displaying a three-dimensional image. A convex image display mask (b) is attached, and when a 3D image is received and input, a concave lens lenticular plate, a concave lens IP plate, a concave lens intersecting lenticular plate, a concave lens to display a 2D image. A concave image display mask (a) such as a rectangular lens plate is attached to the convex image display mask (b).

The lenticular plate (b) is a convex lens-shaped image display mask attached to the image display device (c) to enable a three-dimensional image to be displayed. As an effect having the same effect, there are an IP plate, a cross lenticular plate, a square lens plate, and the like.

In addition, the concave lens lenticular plate (a) is a concave lens-shaped image display mask having the opposite characteristics to the lenticular plate (b) so that the focal length is infinite so that it can be observed as a two-dimensional image. As the concave lens-shaped image display mask, a concave lens lenticule composed of a lens having the opposite characteristics (opposite focal length) of the lenses constituting each of the lenticular plate, the IP plate, the cross lenticular plate, and the square lens plate. Lapan, concave lens IP plate, concave lens intersecting lenticular plate, concave lens rectangular lens plate and the like.

As shown in FIG. 2, the lenticular plate b considers only horizontal parallax, and as shown in FIG. 5, the lenticular plate b may be combined with the image display device c to observe a 3D image without glasses.

2 and 5, the lenticular plate (b) arranges left and right images in a stripe state on a focal plane of a lens called a lenticular screen having a semi-cylindrical shape, and through this lens plate. When observed, the left and right images are separated according to the directivity of the lens plate, so that stereoscopic images can be observed without glasses.

The concave lens lenticular plate (a) has the opposite characteristics (opposite focal length) of the lenticular plate (b) of FIG. 2 as shown in FIG. 3, and the image display device (c) as shown in FIG. And converting the 3D image into a 2D image by combining with the lenticular plate (b) to display the 2D image when the 3D image is received and input.

FIG. 4 is a shape inverting the concave lens lenticular plate a of FIG. 3.

Next, a process of converting and inputting a 3D image into a 2D image by combining the concave lens lenticular plate (a) and the lenticular plate (b) will be described with reference to FIG. 7.

7 illustrates a process of generating a 2D image according to an erasing and generating step using only an image of a viewpoint when a 3D image is input and a 2D image is to be viewed.

First, when an n-time 3D image is input, only the image of one view is left and the image of the other view is removed to convert to a 2D image. Then, an intermediate image is generated by using an image of a viewpoint remaining in the empty space from which the image is removed, and the empty space is replaced with the generated image. At this time, the intermediate image generating method includes a method of overlapping surrounding images and an intermediate image generating method by interpolation.

Looking at the two-dimensional and three-dimensional multi-view image display system according to the present invention with reference to Figure 8 specifically, if the pixel size of the image display device (c) is 0.126mm and constitute a four-eye three-dimensional display device, 4 The lenticular plate (b), which consists of a lens of size containing 4 pixels, should be used. In other words, the width of the lens is 0.504 mm. By attaching the lenticular plate (b) composed of such a lens to the image display device (c) it is possible to view a three-dimensional image (501).

However, such a three-dimensional display device is fixed to the lenticular plate (b) attached to the two-dimensional image can not see. Accordingly, by using the concave lens lenticular plate (a) having the opposite characteristics, the 2D image may be observed through the process of converting the 3D image into the 2D image (see FIG. 7) (502).

If the focal length of the lenticular plate (b) used in the three-dimensional display device is assumed to be f, the width of the lens constituting the concave lens lenticular plate (a) is 0.504 mm, the focal length is -f do. By attaching the concave lens lenticular plate (a) having the opposite characteristics to the lenticular plate (b) it is possible to see a two-dimensional image. That is, by using the concave lens lenticular plate (a) as a cover in the three-dimensional display device using the lenticular plate (b), it is possible to observe the two-dimensional image when using the cover, and to observe the three-dimensional image when the cover is removed Can be. Therefore, two-dimensional and three-dimensional multiview image display is possible.

The method of the present invention as described above may be implemented as a program and stored in a computer-readable recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.).

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes can be made in the art without departing from the technical spirit of the present invention. It will be clear to those of ordinary knowledge.

As described above, the present invention has the effect of utilizing a three-dimensional multi-view image display device implemented by a conventional lenticular plate, an IP plate, a cross lenticular plate, a square lens plate, etc. as a two-dimensional image display device. have.

Claims (13)

In a video display system, Known image display apparatus; A convex image display mask attached to the image display device to display a three-dimensional image; And A concave image display mask formed on the convex image display mask and having a property opposite to that of the convex image display mask so that a focal length becomes infinity for converting a 3D image into a 2D image. Two-dimensional and three-dimensional multi-view video display system comprising a. The method of claim 1, As the convex video display mask, A multi-dimensional and multi-dimensional multiview image display system, characterized in that any one of a lenticular plate, an IP (Integral Photography) plate, a cross lenticular plate or a square lens plate. The method of claim 1, The concave image display mask, The convex image display mask has a characteristic opposite to that of the convex image display mask such that the focal length becomes infinity so that the convex image display mask can be observed as a two-dimensional image by using the three-dimensional image display device to which the convex image display mask is attached. Two-dimensional and three-dimensional multi-view video display system. The method of claim 3, wherein The concave image display mask, A two-dimensional and three-dimensional multi-view multiview image display system, which is any one of a concave lens lenticular plate, a concave lens IP (Integral Photography) plate, a concave lens intersecting lenticular plate, or a concave lens square lens plate. The method according to any one of claims 1 to 3, The concave image display mask, 3D image and 2D image are displayed by combining and separating with the convex image display mask, but when converting the 3D image into 2D image during combining, only the image of one viewpoint is left in the input 3D image. 2D and 3D multi-view image display system, characterized in that to remove the image of the viewpoint and then to replace the empty space from which the image is removed by using the image of the remaining viewpoint. The method of claim 5, wherein The intermediate image generation process, 2D and 3D multi-view image display system, characterized in that to generate an intermediate image by overlapping the surrounding image to generate an image of the space from which the image is removed. The method of claim 5, wherein The intermediate image generation process, A two-dimensional and three-dimensional multi-view image display system for generating an intermediate image by using interpolation to generate an image of a space from which an image is removed. In the image conversion method applied to the two-dimensional and three-dimensional image display system, An image display mask forming step of forming a concave image display mask on the convex image display mask attached to the image display device capable of displaying a three-dimensional image, the concave image display mask having opposite characteristics to the convex image display mask such that a focal length is infinite; An image removing step of removing only the image of one view from the input 3D image and removing the image of the other view; And An image replacement step of generating and replacing an intermediate image by using an image of a remaining view in which an empty space from which an image is removed Method for converting a three-dimensional image comprising a two-dimensional image. The method of claim 8, The intermediate image generation process in the image replacement step, 3. A method of converting a 3D image into a 2D image, wherein the intermediate image is generated by overlapping surrounding images to generate an image of a space from which the image is removed. The method of claim 8, The intermediate image generation process in the image replacement step, A method of converting a 3D image into a 2D image, wherein the intermediate image is generated by using interpolation to generate an image of a space from which the image is removed. The method according to any one of claims 8 to 10, The concave image display mask, The convex image display mask has the opposite characteristics (opposite focal length) so that the focal length becomes infinity so that the convex image display mask is attached to the two-dimensional image so that the double-dimensional image can be observed. A lens lenticular plate, a concave lens IP (Integral Photography) plate, a concave lens intersecting lenticular plate or a concave lens rectangular lens plate method for converting a three-dimensional image to a two-dimensional image. In order to convert a three-dimensional image to a two-dimensional image, a two-dimensional and three-dimensional image display system having a processor, An image removal function of removing only the image of one view from the input 3D image and removing the image of the other view; And An image replacement function of generating an intermediate image by generating an intermediate image by using an image of a view in which the empty space from which an image has been removed is generated, and overlapping surrounding images to generate an image of the space from which the image is removed. A computer-readable recording medium having recorded thereon a program for realizing this. In order to convert a three-dimensional image to a two-dimensional image, a two-dimensional and three-dimensional image display system having a processor, An image removal function of removing only the image of one view from the input 3D image and removing the image of the other view; And An image replacement function of generating an intermediate image by using an interpolation method to generate an intermediate image by using an image of a view in which an empty space from which an image is removed is generated and replacing the image. A computer-readable recording medium having recorded thereon a program for realizing this.