KR20100095321A - Method and apparatus for generating 3d graphics - Google Patents

Abstract

PURPOSE: A method and a device for generating 3D graphic are provided to generate graphic for the left, right eyes by using 3D graphic organization information. CONSTITUTION: Whether generating 3D graphic is possible or not is determined(510). If it is possible to generate the 3D graphic, depth information is extracted(520). By using 2D graphic organization information and the depth information, 3D graphic configuration information is generated(530). By using the 3D graphic configuration information, the graphic for the left, right eyes is generated(540).

Description

Method and apparatus for generating 3D graphics

The present invention relates to a method and apparatus for generating 3D graphics, and more particularly, to a method and apparatus for generating 3D graphics by executing a Java application for generating 2D graphics.

With the development of digital technology, three-dimensional image technology has been widely used. 3D image technology is a technology that expresses more realistic image by giving depth information to 2D image, and it is applied in various fields such as communication, game, medical, and broadcasting by providing realism and reality as if seeing the real thing in the field. have.

Since the human eye is separated by a predetermined distance in the horizontal direction, the two-dimensional images seen by the left and right eyes are different from each other. This is called binocular disparity. The brain fuses two different two-dimensional images to produce a three-dimensional image with perspective and reality. Methods of implementing a 3D image using binocular disparity include a method of wearing glasses and a method of using a device having a lenticular lens, a barallax barrier, a barallax illumination, and the like without wearing the glasses.

The present invention provides a method and apparatus for generating three-dimensional graphics by executing a Java application for generating two-dimensional graphics.

According to an aspect of the present invention to solve the above problems, determining whether to generate a three-dimensional graphics, if the three-dimensional graphics can be generated, extracting depth information, two-dimensional graphics configuration information And generating 3D graphic configuration information by using the depth information, and generating left and right eye graphics using the 3D graphic configuration information. .

In a preferred embodiment, the determining of whether the 3D graphic can be generated may include extracting a 3D graphic possibility flag from a memory area for storing a setting value of a playback device in a playback device, and whether the 3D graphic can be generated. The method may include determining whether the 3D graphic can be generated using a flag. The extracting of the depth information may include extracting the depth information from a memory area for reproducing state storage in a reproducing apparatus.

The method may further include storing the depth information in the memory area by using the reproduction state storage memory area value changing API included in the graphic display application recorded on the medium before extracting the depth information. Can be. The 3D graphic configuration information may include left eye graphic configuration information and right eye graphic configuration information. The generating of the 3D graphic configuration information may include extracting a graphic output position value from the 2D graphic configuration information. Converting the graphic output position value into a first position value and a second position value using the depth information, and converting the left eye and right eye graphic configuration information including one of the first and second position values. It may include the step of generating.

The generating of the left and right eye graphic configuration information may further include disparity indicating whether the left and right eye graphics should be generated with a positive parallax or a negative parallax from a memory area for storing a playback state in a playback device. The method may include extracting a display flag and determining a position value to be included in the left eye and right eye graphic configuration information of the first and second position values, respectively, according to the disparity display flag.

The method may further include storing the parallax indication flag in the memory area by using a reproduction state storage memory area value changing API included in a graphic display application recorded on a medium before extracting the parallax indication flag. May contain

The generating of the left and right eye graphic configuration information may include extracting graphic generation reference information indicating at which point in time the graphic data is produced, from a memory area for storing a playback state in a playback device. May contain

Also, before the extracting of the graphic generation reference information, the graphic screen generation reference information information is stored in the memory area by using a memory area value changing API for storing the playback state included in the graphic display application recorded on the medium. The step may further include. In addition, the generating of the left and right eye graphics may include drawing the left and right eye graphics on two BD-J graphics planes one by one.

According to another aspect of the present invention, in the apparatus for generating a three-dimensional graphics by executing a Java application for generating the two-dimensional graphics, it is determined whether the three-dimensional graphics can be generated, and extracts the depth information when the generation is possible 3D graphics configuration information processing unit for generating 3D graphic configuration information using 2D graphic configuration information and the depth information, and generating left and right eye graphics using the 3D graphic configuration information. An apparatus for generating a 3D graphic may be provided by executing a Java application for generating a 2D graphic including two graphic planes in which a right eye graphic is stored.

According to another aspect of the present invention, in a recording medium including a playback state storage memory region value changing API included in a graphic display application, the playback state storage memory region value changing API is used to generate a three-dimensional graphic. One of the depth indication flag indicating whether the graphic data is generated with a positive parallax or a negative parallax, and depth generation information for indicating at what time the graphic data is produced based on A computer-readable recording medium executed by a Java application for setting the above can be provided.

According to another aspect of the invention, the step of determining whether the three-dimensional graphics can be generated, if the three-dimensional graphics can be generated, extracting the depth information, the two-dimensional graphics configuration information and the depth information Generating 3D graphic configuration information using the 3D graphic configuration information; and generating left and right eye graphics using the 3D graphic configuration information. A computer-readable recording medium having stored thereon a program for executing the generating method can be provided.

According to the present invention, it is possible to provide a method and apparatus for generating 3D graphics by executing a Java application for generating 2D graphics.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram illustrating an apparatus for generating a 3D graphic according to an exemplary embodiment. The apparatus for generating 3D graphics includes a Java module 100, a 3D configuration information generating unit 200, a memory unit 300, and left and right graphic planes 400.

In order to give a 3D effect to a 2D image, a depth must be given to the 2D image. When a person looks at the screen, the image projected on the screen is visible in both eyes. The distance between two points of the image in the eye is called parallax. Parallax is divided into positive parallax, zero parallax, and negative parallax. Positive parallax refers to the parallax when the image is inside the screen and when the parallax is less than or equal to the distance between eyes. The larger the parallax value, the more stereoscopic the image appears to be than the screen.

The parallax is zero when the image is formed in two dimensions on the screen plane. If the parallax is zero, the image is formed on the screen plane so that the user does not feel a three-dimensional effect. Negative parallax refers to the parallax when the image is in front of the screen and occurs when the line of sight intersects, giving a stereoscopic feeling as if an object is popping out.

Video data may be played with a graphical overlay displayed by a program element such as Java. When the video data is reproduced as a 3D image, a method for reproducing the graphic overlay reproduced with the video data in 3D is also sought.

When the BD-J title is reproduced in the three-dimensional graphic generating device and the BD-J graphic is to be reproduced, the Java module 100 loads the graphic data recorded on the disc into the BD-J cache. The Java module 100 reads graphic data stored in a cache by an API such as drawing and / or loadImage called by an application and processes graphics according to the called API.

In FIG. 1, a BD-J GP (Graphic Plane) and an HGraphics Device are illustrated in a dotted line between the Java module 100 and the 3D graphic configuration information generating unit 200. BD-J GP (Graphic Plane) and HGraphics Device shown by dotted lines are generally blocks used when generating 2D graphics in the 2D graphics generating apparatus. The BD-J GP (Graphic Plane) in the dotted line is a plane on which graphics are drawn by the Java module 100, and the HGraphics Device is one of the BD-J Havi Devices, and is displayed on the plane based on the graphic configuration information included in the API. A device for drawing graphics. That is, the Java module 100 generates two-dimensional graphics using the two-dimensional configuration information.

In order for a graphic to be generated in three dimensions, a left eye image and a right eye graphic should be generated. However, this requires an extension or additional API of the API, such as the Java module 100 further defining a parameter for determining whether the API is for drawing a left eye graphic or a right eye graphic. However, for compatibility with lower Blu-ray Disc players, a method for reproducing a graphical overlay as a 3D image using a conventional API without defining a new API is sought.

In order to generate a three-dimensional graphics by executing a Java application for generating two-dimensional graphics while maintaining compatibility with the lower player, the three-dimensional graphics generating apparatus of the present invention, the three-dimensional configuration information generating unit 200, the memory unit ( 300 and the left and right graphic planes 400.

The memory unit 300 includes a memory area for storing the reproduction device setting value and a memory area for storing the reproduction state. The memory area for storing the playback device setting value may be, for example, a Player Setting Register, which is shown as PSR A in FIG. The memory area for storing the playback device setting value is a register whose contents in the register cannot be changed through a navigation command or an API command in the disk, and stores the values set when the player is released.

In the present invention, a 3D graphic generation availability flag indicating whether 3D graphic generation is possible is stored in the memory area for storing the reproduction device setting value.

When the 3D configuration information generator 200 includes a flag capable of generating 3D graphics in the memory unit 300, the 3D configuration information generator 200 may determine whether the 3D graphics generating apparatus can generate 3D graphics by extracting the flag. have.

The memory area for storing the playback status may be, for example, a Playback Status Register, which is shown as PSR B in FIG. The memory area for reproducing state storage is a register whose value can be changed at will according to the reproducing state.

In Fig. 1, an application created by the author is recorded in the BD, and an application for setting a playback status register value and an application for graphic display are inserted in the application. An application for setting the playback status register value includes an API for instructing a playback status register value change, that is, an API for changing the memory area value for storing the playback state. The Java module 100 may record predetermined information in the memory area 300 using a playback area storage memory area value change API included in an application to set a register value.

In the present invention, the memory area value changing API for storing the playback state in the application recorded on the disk includes depth information for generating three-dimensional graphics, graphic generation reference information for informing at which point the graphic data is produced, One or more of the parallax indication flags indicating whether the left and right eye graphics should be generated with a positive parallax or a negative parallax may be used to record in the reproducing state storage memory area.

The Java module 100 informs the memory region 300 at which point in time the depth information and the graphic data were produced using the API for changing the memory region value for storing the playback state included in the graphic display application recorded on the medium. One or more of the parallax indication flags indicating whether the graphic generation reference information for giving, the left and right graphics should be generated with a positive parallax or a negative parallax.

When the depth information is stored in the playback state storage memory area, the 3D graphic configuration information generation unit 300 extracts the depth information from the playback state storage memory area. The 3D graphic configuration information generation unit 300 converts the 2D configuration information used for generating 2D graphics into 3D configuration information using depth information. The 3D configuration information includes left eye graphic configuration information for generating left eye graphics and right eye graphic configuration information for generating right eye graphics.

The 3D graphic configuration information generator 300 extracts a graphic output position value from the 2D graphic configuration information. The graphic output position value indicates where the two-dimensional graphics are created on the plane. The 3D graphic configuration information generator 300 converts the graphic output position value into a first position value and a second position value using the depth information. As an example, each of the first position value and the second position value may be a value obtained by subtracting a graphic output position value by a predetermined value on the X axis.

The 3D graphic configuration information generation unit 300 generates graphic configuration information for left and right eyes including one of the first and second position values.

The 3D graphic configuration information generator 300 generates a left eye graphic on the left eye plane of the graphic plane 400 by using the left eye graphic configuration information. In addition, the 3D graphic configuration information generation unit 300 generates the right eye graphics in the right eye plane of the graphic plane 400 by using the right eye graphic configuration information.

When the time difference display flag indicating whether the left and right eye graphics should be generated with a positive parallax or a negative parallax is stored in the memory area for storing the playback state, the three-dimensional graphic configuration information generating unit 300 displays a parallax display. You can adjust the position shift value of the graphic by extracting the flag. That is, when the parallax displayed by the parallax display flag is a positive parallax, since the image should be formed inside the screen, the 3D graphic configuration information generating unit 300 moves the left eye graphic to the left by a predetermined value. The right eye graphic should be created at the position moved to the right by a predetermined value. If the parallax displayed by the parallax display flag is a negative parallax, the image should be off the screen, so the 3D graphic configuration information generating unit 300 moves the left eye graphic to the right by a predetermined value and moves the graphic for the right eye to a predetermined value. It should be generated by moving it to the left by the value.

When the memory area for reproducing state storage includes graphic generation reference information indicating at what point the graphic data is produced, the 3D graphic configuration information generation unit 300 stores the graphic generation reference information in the memory unit 300. ), It may be determined whether the graphic is generated based on the left eye image, the right eye image, or the center of a normal two-dimensional image.

In order for the graphic generation reference information or the parallax indication flag to be extracted from the memory unit 300, the Java module 100 uses a memory area value change API for storing the playback state included in the graphic display application recorded on the disk beforehand. The information must be stored in the memory area.

As described above, according to an embodiment of the present disclosure, the apparatus for generating 3D graphics may include a memory area for reproducing state storing predetermined information for generating 3D configuration information. In order for the predetermined information to be stored in the reproduction state storage memory area, the disc should store the reproduction state storage memory area value change API for setting depth information in the graphic display application. This allows graphics to be reproduced in three dimensions using conventional APIs without modifying the API. In addition, the 3D graphics generating apparatus generates 3D graphic configuration information by using the information provided in the memory area for storing the playback state, and generates a left eye graphic and a right eye graphic by using the same to enable the graphic to be reproduced in 3D. Can be.

2 to 4 are diagrams illustrating a register of the memory area 300 according to example embodiments. Fig. 2 shows a memory area for reproducing device setting values, in which a CD capability, that is, three-dimensional generation availability flag is set in one bit (for example, "b0") of all 32 bits. If the corresponding bit is "b0", it means that 3D graphic generation is impossible, and if the corresponding bit is 1b, it means that 3D graphic generation is possible.

3 illustrates a memory area for reproducing state storage in which depth information and parallax indication flags are stored. In FIG. 3, it is understood that the memory area for reproducing state storage is 32 bits in total, of which 31 bits of depth information are set and one of the bits has a disparity display flag. dir_flag is a flag indicating whether the graphic component to be drawn currently has a positive parallax, that is, a three-dimensional effect inside the screen, or a negative parallax, that is, a three-dimensional image out of the screen. Determine.

When dir_flag is 0b, the 3D graphics configuration information generator 200 moves the coordinates of the component designated by the application to the left by the shift value or the depth value in the left-eye BD-J graphics plane 400 and the BD-J for the right eye. The graphics plane 400 moves to the right. In the case of 1b, it moves in the opposite direction to determine the horizontal movement direction due to parallax.

4 illustrates a memory area for reproducing state storing depth information, parallax indication flag, and graphics generation reference information. In Fig. 4, in 32 bits of the memory area for reproducing state storage, 29 bits are assigned depth information as a depth value or a position shift value, 1 bit is set with a parallax indication flag, and 2 bits are assigned with graphic generation reference information. It can be seen that. The disparity display flag is a flag indicating at what point a two-dimensional graphic to be displayed by a Java application is produced, and indicates whether the graphic is produced based on a center viewpoint or a graphic produced for a left eye or right eye as in the prior art. .

5 is a flowchart illustrating a 3D graphic generating method according to an exemplary embodiment. Referring to FIG. 5, the 3D configuration information generating unit 200 extracts a flag capable of generating 3D graphics from the memory area 300 for storing a device setting value, and determines whether the graphic can be generated in 3D. (Step 510). If the graphic cannot be generated in 3D, the Java module 100 generates the 2D graphic in the graphic plane using the 2D graphic configuration information (step 550).

If the graphic can be generated in three dimensions, the three-dimensional configuration information generation unit 200 extracts depth information from the memory area 300 for storing the playback state (step 520).

The 3D configuration information generator 200 generates 3D graphic configuration information by using the extracted depth information and the 2D graphic configuration information processed by the Java module 100 (step 530). The 3D configuration information generating unit 200 generates a left eye graphic and a right eye graphic on the left and right graphic planes 400 using the generated 3D graphic configuration information (step 540).

So far I looked at the center of the preferred embodiment for the present invention. Those skilled in the art will appreciate that the present invention can be implemented in a modified form without departing from the essential features of the present invention. Therefore, the disclosed embodiments should be considered in descriptive sense only and not for purposes of limitation. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the scope will be construed as being included in the present invention.

1 is a block diagram illustrating an apparatus for generating a 3D graphic according to an exemplary embodiment of the present invention.

2 is a diagram illustrating a memory area for storing a reproducing apparatus setting value according to an exemplary embodiment of the present invention.

3 illustrates a memory area for reproducing state storing depth information and parallax indication flag according to an exemplary embodiment of the present invention.

4 illustrates a memory area for reproducing state storing depth information, parallax indication flag, and graphic generation reference information according to an exemplary embodiment of the present invention.

5 is a flowchart illustrating a 3D graphic generating method according to an exemplary embodiment of the present invention.

Claims (18)

In the method for generating three-dimensional graphics by executing a Java application for generating two-dimensional graphics, Determining whether three-dimensional graphics can be generated; Extracting depth information when the 3D graphic can be generated; Generating 3D graphic configuration information using 2D graphic configuration information and the depth information; And And generating a left and right eye graphic by using the 3D graphic configuration information. The method of claim 1, wherein determining whether the 3D graphic can be generated Extracting a flag capable of generating 3D graphics from a memory area for storing a playback device setting value in the playback device; And Determining whether the 3D graphic can be generated using the flag for generating the 3D graphic; a method of generating a 3D graphic by executing a Java application for generating the 2D graphic; . The method of claim 1, wherein the extracting of the depth information comprises: And extracting the depth information from a memory area for storing a playback state in a playback device. The method of claim 3, wherein before the extracting of the depth information, storing the depth information in the memory area by using a reproduction state storage memory area value changing API included in a graphic display application recorded on a medium. Method for generating a three-dimensional graphics by executing a Java application for generating two-dimensional graphics, characterized in that it further comprises. The method of claim 1, wherein the 3D graphic configuration information includes left eye graphic configuration information and right eye graphic configuration information, Generating the 3D graphic configuration information Extracting a graphic output position value from the two-dimensional graphic configuration information; And Converting the graphic output position value into a first position value and a second position value using the depth information, and generating the left eye and right eye graphic configuration information including one of the first and second position values And generating a 3D graphic by executing a Java application for generating the 2D graphic. The method of claim 5, wherein the generating of the left and right eye graphic configuration information comprises: Extracting a parallax indication flag indicating whether the left and right eye graphics should be generated with a positive parallax or a negative parallax from a memory area for reproducing state storage in a reproducing apparatus; And And determining a position value to be included in the left eye and right eye graphic configuration information among the first and second position values, respectively, according to the disparity display flag. How to create 3D graphics. 7. The method of claim 6, before the step of extracting the disparity display flag, the disparity display flag is stored in the memory area using a reproduction state storage memory area value changing API included in a graphic display application recorded on a medium. And generating a 3D graphic by executing a Java application for generating the 2D graphic. The method of claim 5, wherein the generating of the left and right eye graphic configuration information comprises: Extracting, from the memory region for storing the playback state in the playback device, graphics generating reference information indicating at what point the graphic data is produced based on a Java application for generating a two-dimensional graphic. How to create 3D graphics. The method of claim 8, wherein before the extracting of the graphic generation reference information, the generation of the graphic screen in the memory area by using a reproduction state storage memory area value changing API included in a graphic display application recorded on a medium. And generating a three-dimensional graphic by executing a Java application for generating the two-dimensional graphic. The method of claim 1, wherein the generating of the left and right eye graphics And drawing the left and right eye graphics on two BD-J graphics planes, one by one, by executing a Java application for generating two-dimensional graphics. An apparatus for generating three-dimensional graphics by executing a Java application for generating two-dimensional graphics, Determine whether 3D graphics can be generated, extract depth information if possible, generate 3D graphic configuration information using 2D graphic configuration information and the depth information, and generate the 3D graphic configuration information. A three-dimensional graphic configuration information processing unit for generating left and right eye graphics by using; And Apparatus for generating a three-dimensional graphics by executing a Java application for generating a two-dimensional graphics, characterized in that it comprises two graphics planes for storing the left and right graphics, respectively. 12. The apparatus of claim 11, wherein the apparatus further comprises a memory area for storing a playback device setting value storing a flag capable of generating 3D graphics, wherein the 3D graphic configuration information generating unit is configured to store the 3D graphic from the memory for storing the playback device setting value. And generating a 3D graphic by extracting a flag capable of generating 3D graphics and determining whether the 3D graphic can be generated. 12. The apparatus of claim 11, wherein the apparatus further comprises a playback status register for storing depth information, wherein the 3D graphic configuration information generator extracts the depth information from the playback status storage memory region. Apparatus for generating three-dimensional graphics by executing a Java application for generating two-dimensional graphics, characterized in that. The method of claim 11, wherein the 3D graphic configuration information includes left eye graphic configuration information and right eye graphic configuration information. The 3D graphic configuration information generation unit extracts a graphic output position value from the 2D graphic configuration information, converts the graphic output position value into a first position value and a second position value using the depth information, And generating a 3D graphic by executing a Java application for generating a 2D graphic, wherein the left and right eye graphic configuration information including one of first and second position values is generated. 15. The apparatus of claim 14, wherein the apparatus further comprises a memory area for storing a playback state storing a parallax indication flag indicating whether the left and right eye graphics should be generated with a positive parallax or a negative parallax, And the three-dimensional graphic configuration information generating unit extracts the disparity display flag from the memory area for reproducing state to generate a three-dimensional graphic by executing a Java application for generating a two-dimensional graphic. 15. The apparatus of claim 14, wherein the apparatus further comprises a memory area for storing reproduction state in which graphic generation criterion information indicating at what time point the graphic data is produced, And the 3D configuration information generator extracts the graphic generation reference information from the memory region for storing the playback state, thereby generating a 3D graphic by executing a Java application for generating 2D graphics. A recording medium including a playback state storage memory region value changing API included in a graphic display application, wherein the playback state storage memory region value changing API includes depth information for generating three-dimensional graphics, And at least one of graphic generating reference information for indicating whether the graphic is produced based on a viewpoint, or a parallax indication flag indicating whether graphics for left and right eyes should be generated with a positive parallax or a negative parallax. Computer-readable recording media executed by Java applications. In the method for generating three-dimensional graphics by executing a Java application for generating two-dimensional graphics, Determining whether three-dimensional graphics can be generated; Extracting depth information when the 3D graphic can be generated; Generating 3D graphic configuration information using 2D graphic configuration information and the depth information; And A program for executing a method of generating a 3D graphic by executing a Java application for generating a 2D graphic, comprising generating a graphic for left and right eyes using the 3D graphic configuration information. A computer-readable recording medium that has been stored.

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