KR20110056751A - Method for providing 3d image and 3d display apparatus - Google Patents

Abstract

PURPOSE: A method for providing a 3D image and a 3D display apparatus is provided to display an input image in 2D or 3D format after detecting the kind of the input image. CONSTITUTION: If a specific operation is inputted in a 2D mode, a TV detects the kind of an input image(S630, S640). If the input image is a 3D image, the TV switches the display mode into a 3D mode(S650, S660). The TV displays the 3D image(S670). If the specific operation is inputted, the TV switches the display mode into a 2D mode(S680, S690). The TV displays the input image in the 2D mode(S695).

Description

Method for providing 3D image and 3D display apparatus using the same {Method for providing 3D image and 3D display apparatus}

The present invention relates to a 3D image providing method and a 3D display device using the same, and more particularly, to a 3D image providing method for realizing a 3D image by alternately displaying a left eye image and a right eye image on a screen, and 3D using the same. It relates to a display device.

3D stereoscopic image technology has various applications such as information communication, broadcasting, medical, education and training, military, game, animation, virtual reality, CAD, industrial technology, etc. It is a core foundation technology of information and communication.

In general, the three-dimensional sense perceived by a person is caused by the degree of change in the thickness of the lens depending on the position of the object to be observed, the difference in angle between the two eyes and the object, the difference in the position and shape of the visible object in the left and right eyes, and the movement of the object. Lag and other effects such as various psychological and memory effects are produced in combination.

Among them, binocular disparity, which appears as two eyes of human being positioned about 6 ~ 7cm apart in the horizontal direction, can be said to be the most important factor of three-dimensional effect. In other words, the binocular parallax makes us look at the angle with respect to the object, and because of this difference, the images coming into each eye have different images, and when these two images are transmitted to the brain through the retina, You can feel the original three-dimensional stereoscopic image by fusion with each other exactly.

The stereoscopic image display apparatus is classified into glasses type using special glasses and non-glass type not using special glasses. Eyeglass type is a color filter method that separates and selects images by using a color filter having a complementary color relationship, a polarization filter method that separates images of left and right eyes using a light shielding effect by a combination of orthogonal polarizing elements, and a left eye video signal and a right eye There is a shutter glass system that allows the user to feel a three-dimensional effect by alternately blocking the left and right eyes in response to a synchronization signal for projecting an image signal onto the screen.

Among them, the shutter glass method is a display method using parallax of both eyes, and synchronizes the image providing of the display device and the on-off of both the left and right eyes of the glasses so that images viewed from different angles recognize the sense of space due to the brain action. That's the way.

Meanwhile, in order for a user to watch a 3D image, the user needs to change the display device to the 3D mode. In general, the 3D display apparatus enters the 3D mode through a different method of operation depending on whether the input image is a 2D image or a 3D image.

However, it is not easy for a user to distinguish whether a current input image is a 2D image or a 3D image. That is, it is difficult for the user to determine what kind of image is being input.

The user wants to easily implement and use the 3D mode without the process of recognizing whether the input image is a 2D image or a 3D image. Accordingly, there is a demand for a method for enabling a user to more easily view a 3D image through a display device.

The present invention has been made to solve the above problems, an object of the present invention, if a specific operation is input by the user in the 2D mode, detecting whether the input image is a 2D image or 3D image, If the image is a 3D image, switch the display mode to 3D mode to display a 3D image.If the input image is a 2D image, convert the input 2D image to a 3D image and then switch the display mode to 3D mode and convert the 3D image. A method of providing a 3D image for displaying an image and a 3D display apparatus using the same are provided.

According to an embodiment of the present invention for achieving the above object, a 3D image providing method of the display device which can operate in a display mode 2D mode for displaying a 2D image and 3D mode for displaying a 3D image, the If a specific operation is input by the user in the 2D mode, detecting whether the input image is a 2D image or a 3D image; Displaying the 3D image by switching the display mode to a 3D mode when the input image is a 3D image; Converting the input 2D image into a 3D image when the input image is a 2D image; And switching the display mode to a 3D mode to display the converted 3D image.

The converting step may be converted to a 3D image including a left eye image and a right eye image generated based on the 2D image.

The converting step may convert the 2D image into a 3D image of a format supported by the display apparatus.

The specific operation may be an operation for switching the display mode to either 2D mode or 3D mode.

The method may further include switching the display mode to the 2D mode when the specific operation is input again by the user in the 3D mode state.

The specific operation may be an operation of pressing a specific button of a remote controller for controlling the display device.

In addition, the specific operation may be an operation of pressing a specific button arranged on the display device.

The specific operation may be an operation of selecting a specific item from a menu displayed on the screen.

On the other hand, according to an embodiment of the present invention, a display device that can operate the display mode in the 2D mode for displaying the 2D image and the 3D mode for displaying the 3D image, the operation unit for receiving a user's operation; When a specific operation is input through the operation unit in the 2D mode state, it is detected whether the input image is a 2D image or a 3D image, and when the input image is a 3D image, the display mode is switched to a 3D mode to display the 3D image. And a controller configured to control to be displayed and to convert the input 2D image into a 3D image and to switch the display mode to a 3D mode to display the converted 3D image when the input image is a 2D image. have.

The controller may convert a 3D image including a left eye image and a right eye image generated based on the 2D image.

The controller may convert the 2D image into a 3D image in a format supported by the display apparatus.

The specific operation may be an operation for switching the display mode to either 2D mode or 3D mode.

The controller may switch the display mode to the 2D mode when the specific manipulation is input again through the manipulation unit in the 3D mode state.

The specific operation may be an operation of pressing a specific button of a remote controller for controlling the display device.

In addition, the specific operation may be an operation of pressing a specific button arranged on the display device.

The specific operation may be an operation of selecting a specific item from a menu displayed on the screen.

As described above, according to various embodiments of the present disclosure, when a specific operation is input by the user in the 2D mode state, it is detected whether the input image is a 2D image or a 3D image, and is displayed when the input image is a 3D image. 3D image is displayed by switching the mode to 3D mode, and if the input image is a 2D image, converts the input 2D image to 3D image and then switches the display mode to 3D mode to provide a 3D image displaying the converted 3D image. It is possible to provide a method and a 3D display device applying the same, so that a user can execute a 3D mode by one type of operation regardless of whether the input image is a 2D image or a 3D image.

Hereinafter, with reference to the drawings will be described the present invention in more detail. In particular, the operation principle and configuration of the 3D (3-Dimension) image providing system will be described with reference to FIGS. 1 to 4. A process of the 3D image will be described with reference to FIGS. 5A to 5C. In addition, a process of performing the 3D mode and the 2D mode will be described with reference to FIGS. 6 to 9B.

<Operation principle and composition of 3D image providing system>

1 is a diagram illustrating a 3D image providing system according to an exemplary embodiment of the present invention. As shown, the 3D image providing system includes a camera 100 for generating a 3D image, a TV 200 for displaying a 3D image on a screen, a remote controller 290 for controlling the TV 200, and a 3D image. It consists of a shutter glass 300 for viewing.

The camera 100 is a type of photographing apparatus for generating a 3D image, and generates a left eye image photographed for the purpose of providing a user's left eye and a right eye image photographed for the purpose of providing a user's right eye. That is, the 3D image is composed of a left eye image and a right eye image, and the left and right eye images are alternately provided to the user's left and right eyes, respectively, thereby generating a stereoscopic effect due to binocular disparity.

To this end, the camera 100 is composed of a left eye camera for generating a left eye image and a right eye camera for generating a right eye image, and the distance between the left eye camera and the right eye camera is considered from a distance between two eyes of a person.

The camera 100 transmits the captured left eye image and the right eye image to the TV 200. In particular, the left eye image and the right eye image transmitted from the camera 100 to the TV 200 are transmitted in a format consisting of only one image of the left eye image and the right eye image in one frame, or the left eye image and the right eye image in one frame. All of these may be delivered in a format configured to be included.

Hereinafter, a detailed description of the format of the 3D image transmitted to the TV 200 will be made with reference to FIGS. 2A to 2F.

2A to 2F are diagrams for describing a format of a 3D image. 2A to 2F, the left eye image part is displayed in white and the right eye image part is displayed in black for convenience of description.

First, FIG. 2A illustrates a format of a 3D image according to a general frame sequence method. According to the frame sequence method, the 3D image has a format in which one left eye image or one right eye image is inserted into one frame.

According to such a format, a 3D image having a resolution of 1920 * 1080 may include a frame including a left eye image L1 taken by a left eye camera-> a frame including a right eye image R1 taken by a right eye camera-> a left eye. Frame containing left eye image L2 taken by camera-> frame containing right eye image R2 taken by right eye camera->. It will consist of '.

2B is a diagram illustrating a format of a 3D image according to a top & buttom method. The top-bottom method is also called a vertical division method. In this case, the 3D image format includes a left eye image and a right eye image in one frame. In particular, the format of the 3D image according to the top & bottom method is that the left eye image and the right eye image are divided into upper and lower sides.

To this end, the left eye image and the right eye image captured by the camera 100 are scaled down in the vertical direction to be converted to a resolution of 1920 * 540, and then integrated into one frame to have a resolution of 1920 * 1080. Will be delivered.

According to such a format, a 3D image having a resolution of 1920 * 1080 may include a frame including a left eye image L1 (top) taken by a left eye camera and a right eye image R1 (bottom) taken by a right eye camera-> Frame including left eye image L2 (top) taken by left eye camera and right eye image R2 (bottom) taken by right eye camera->. It consists of '.

FIG. 2C is a diagram illustrating a format of a 3D image according to a side by side method. According to the side by side method, the 3D image has a format in which both a left eye image and a right eye image are included in one frame. In particular, the format of the 3D image according to the side by side method is a left eye image and a right eye image divided into left and right, a left eye image is provided on the left side, and a right eye image is provided on the right side.

To this end, the left eye image and the right eye image captured by the camera 100 are scaled down in the left and right directions to be respectively converted to a resolution of 960 * 1080, and then integrated into one frame to have a resolution of 1920 * 1080. Will be delivered.

According to such a format, a 3D image having a resolution of 1920 * 1080 may include a frame including a left eye image L1 (left) photographed by a left eye camera and a right eye image R1 (right) photographed by a right eye camera. Frame including left eye image L2 (left) taken by left eye camera and right eye image R2 (right) taken by right eye camera. It will consist of '.

2D is a diagram illustrating a format of a 3D image according to a horizontal interleaving method. According to the horizontal interleaving method, the 3D image has a format in which both a left eye image and a right eye image are included in one frame. In particular, the format of the 3D image according to the horizontal interleaving method is a format in which the left eye image and the right eye image are alternately arranged in rows.

To this end, the left eye image and the right eye image photographed by the camera 100 are ① scaled down in the vertical direction and converted into a resolution of 1920 * 540, respectively, and then the converted left eye image and the converted right eye image are each odd rows. Alternatively, one frame may be configured by alternately arranging even rows. ② Only the odd-row images are extracted from the left eye image, and only the even-row images are extracted from the right eye image. It may be combined to form a frame.

For example, according to the format according to the above ①, the 3D image is a 'first row of the left eye image L1 photographed by the left eye camera, and the first row of the right eye image R1 photographed by the right eye camera. , The second row of the left eye image L1 photographed by the left eye camera, and the second row of the right eye image R1 photographed by the right eye image camera. 'This constitutes one frame.

Further, in the next frame, the first row of the left eye image L2 photographed by the left eye camera, the first row of the right eye image R2 photographed by the right eye camera, and the left eye image L2 photographed by the left eye camera ), The second row of the right eye image R2 captured by the right eye image camera. It will consist of '.

FIG. 2E illustrates a format of a 3D image according to a vertical interleaving scheme. According to the vertical interleave method, the 3D image has a format in which both a left eye image and a right eye image are included in one frame. In particular, the format of the 3D image according to the vertical interleaving method is a format in which the left eye image and the right eye image are alternately arranged in columns.

To this end, the left eye image and the right eye image photographed by the camera 100 are ① scaled down in the left and right directions and converted to a resolution of 960 * 1080, respectively, and then the odd left image and the converted right eye image are each odd-numbered row. Alternatively, one frame may be configured by alternately arranging even rows. ② Only the odd-row image is extracted from the left eye image, and only the even-row image is extracted from the right eye image. This may be combined to form a frame.

For example, according to the format according to the above ①, the 3D image is a 'first column of the left eye image L1 photographed by the left eye camera, and the first column of the right eye image R1 photographed by the right eye camera. , The second column of the left eye image L1 photographed by the left eye camera, and the second column of the right eye image R1 photographed by the right eye image camera. 'This constitutes one frame.

Further, in the next frame, the first row of the left eye image L2 photographed by the left eye camera, the first row of the right eye image R2 photographed by the right eye camera, and the left eye image L2 photographed by the left eye camera Column 2 in the right eye image R2 captured by the right eye image camera. It will consist of '.

2F is a diagram illustrating a format of a 3D image according to a checkerboard method. In the checkerboard method, the 3D image has a format in which both a left eye image and a right eye image are included in one frame. In particular, the format of the 3D image according to the checkerboard method is a format in which the left eye image and the right eye image are alternately arranged in pixel units or pixel group units.

To this end, the left eye image and the right eye image captured by the camera 100 are alternately arranged in pixels or pixel groups constituting each frame by being extracted in units of pixels or pixel groups.

For example, according to the format of the 3D image according to the checkerboard method, the 3D image may be 'the first row of the left eye image L1 captured by the left eye camera, the right eye image captured by the right eye camera. First row second column of (R1), first row third column of left eye image L1 photographed by left eye camera, first row fourth column of right eye image R1 photographed by right eye camera. 'This constitutes one frame.

In the next frame, the first row of the first row of the left eye image L2 photographed by the left eye camera, the first row of the second row of the right eye image R2 photographed by the right eye camera, and the left eye camera Row 3 of the first row of the left eye image L2 captured, and Row 4 of the first row of the right eye image R2 captured by the right eye camera. It will consist of '.

Referring back to FIG. 1, the camera 100 determines one of the above-described formats in advance, and transfers the 3D image to the TV 200 according to the determined format.

The TV 200 is a kind of display device, and receives a 3D image received from a photographing apparatus such as a camera 100 or a 3D image taken by a camera 100, edited / processed by a broadcasting station, and then transmitted from the broadcasting station. The received 3D image is processed and displayed on the screen. In particular, the TV 200 processes the left eye image and the right eye image by referring to the format of the 3D image, and allows the processed left eye image and the right eye image to be time-divisionally displayed alternately.

In addition, the TV 200 generates a synchronizing signal synchronized with a timing in which the left eye image and the right eye image are time-divided and displayed, and transmits the synchronization signal to the shutter glass 300.

Reference will be made to FIG. 3 to describe the detailed configuration of such a TV 200. 3 is a block diagram of a TV 200 according to an embodiment of the present invention.

As illustrated, the TV 200 according to the present embodiment includes an image receiver 210, an image processor 220, an image outputter 230, a controller 240, and a graphical user interface (GUI) generator 250. ), A storage unit 260, an operation unit 270, and an IR transmitter 280.

The image receiver 210 receives and demodulates a broadcast received by wire or wireless from a broadcasting station or a satellite. In addition, the image receiver 210 is connected to an external device such as the camera 100 to receive a 3D image from the external device. External devices can be connected wirelessly or wired via interfaces such as S-Video, Component, Composite, D-Sub, DVI, and HDMI.

As described above, the 3D image is an image composed of at least one frame, and includes a left eye image and a right eye image in one image frame or an image in which each frame consists of a left eye image or a right eye image. That is, the 3D image is an image generated by one of the formats according to FIG. 2 described above.

Therefore, the 3D image received by the image receiving unit 210 may be in various formats, and in particular, among the general frame sequence method, top & bottom method, side by side method, horizontal interleaved method, vertical interleaved method, and checkerboard method. It may be in a format according to one.

The image receiver 210 transmits the received 3D image to the image processor 220.

The image processor 220 performs a signal processing such as video decoding, format analysis, video scaling, and GUI addition, etc. on the 3D image received by the image receiver 210.

In particular, the image processor 220 generates a left eye image and a right eye image corresponding to a size (1920 * 1080) of a screen by using a format of the 3D image input to the image receiver 210.

That is, when the format of the 3D image is a format according to the top & bottom, side by side, horizontal interleave, vertical interleave, or checkerboard method, the image processor 220 performs a left eye image portion and a right eye image in each image frame. Each part is extracted and the left and right eye images are enlarged and scaled or interpolated to generate left and right eye images for providing to the user.

In addition, when the format of the 3D image is a general frame sequence method, the image processor 220 may prepare to extract a left eye image or a right eye image from each frame and provide the same to the user.

A left eye image and a right eye image generation process according to a 3D image format will be described later.

Meanwhile, the information about the format of the input 3D image may or may not be included in the 3D image signal.

For example, when the information on the format of the input 3D image is included in the 3D image signal, the image processor 220 analyzes the 3D image to extract information about the format, and the received 3D according to the extracted information. The image is processed. On the other hand, when the information about the format of the input 3D image is not included in the 3D image signal, the image processor 220 processes the 3D image received according to the format input from the user or received the 3D image according to a preset format. The image is processed.

In addition, the image processor 220 allows the GUI received from the GUI generator 250 to be described later to be added to the left eye image, the right eye image, or both.

The image processor 220 time-divisions the extracted left eye image and the right eye image, and alternately transfers the extracted left eye image to the image output unit 230. That is, the image processing unit 220 is a left eye image (L1)-> right eye image (R1)-> left eye image (L2)-> right eye image (R2)->. The left eye image and the right eye image are transmitted to the image output unit 130 in a temporal order of '.

The image output unit 230 alternately outputs the left eye image and the right eye image output from the image processor 220 to provide to the user.

The GUI generator 250 generates a GUI to be displayed on the display. The GUI generated by the GUI generator 250 is applied to the image processor 220 to be added to the left eye image, the right eye image, or both to be displayed on the display.

The storage unit 260 is a storage medium that stores various programs necessary for operating the TV 200, and may be implemented as a memory, a hard disk drive (HDD), or the like.

The operation unit 270 receives a user's operation. In detail, the operation unit 270 receives a user command received from an operation unit such as a remote controller 290 through the user command receiving unit 275. In addition, the manipulation unit 270 may receive a user's manipulation through a button (not shown) disposed on the TV 200. In addition, the operation unit 290 transmits the received user operation to the control unit 240.

The IR transmitter 280 generates a synchronization signal synchronized with the left eye image and the right eye image that are alternately output, and transmits the generated synchronization signal to the shutter glass 300 in an infrared form. Since the shutter glass 300 is alternately opened and closed, the left eye image is displayed at the image output unit 230 at the left eye open timing of the shutter glass 300, and the image is output at the right eye open timing of the shutter glass 300. 230 to display the right eye image.

The controller 240 controls the overall operation of the TV 200 according to a user manipulation received from the manipulation unit 270.

In particular, the controller 240 controls the image receiving unit 210 and the image processing unit 220 so that a 3D image is received, the received 3D image is divided into a left eye image and a right eye image, respectively. Allows scaling or interpolation to a size that can be displayed on this single screen.

In addition, the controller 240 controls the GUI generator 250 to generate a GUI corresponding to the user's operation received from the operator 270, and controls the IR transmitter 280 to control the left eye image and the right eye. A synchronization signal synchronized with the output timing of the image is generated and transmitted.

Meanwhile, the shutter glass 300 alternately opens and closes the left eye glass and the right eye glass according to the synchronization signal received from the TV 200, so that the user can view the left eye image and the right eye image through the left eye and the right eye, respectively. Hereinafter, a detailed configuration of the shutter glass 300 will be described with reference to FIG. 4.

4 is a block diagram of a shutter glass 300 according to an embodiment of the present invention. As illustrated, the shutter glass 300 includes an IR receiver 310, a controller 320, a glass driver 330, and a glass 340.

The IR receiver 310 receives a synchronization signal for the 3D image from the IR transmitter 280 of the TV 200 connected by wire or wirelessly. In particular, the IR transmitter 280 emits a synchronization signal by using infrared rays having straightness, and the IR receiver 310 receives a synchronization signal from the emitted infrared rays.

For example, the synchronization signal transmitted from the IR transmitter 280 to the IR receiver 310 may be a signal in which a high level and a low level are alternated at predetermined time intervals. The left eye image may be transmitted in time, and the right eye image may be transmitted in a low level time.

The IR receiver 310 transmits the synchronization signal received from the IR transmitter 280 to the controller 320.

The controller 320 controls the overall operation of the shutter glass 300. In particular, the controller 320 generates a control signal based on the synchronization signal received from the IR receiver 310, and transfers the generated control signal to the glass driver 330 to control the glass driver 330. In particular, the controller 320 controls the glass driver 330 such that a driving signal for driving the glass unit 340 is generated by the glass driver 330 based on the synchronization signal.

The glass driver 330 generates a driving signal based on the control signal received from the controller 320. In particular, since the glass unit 340 to be described later is composed of the left eye glass 350 and the right eye glass 360, the glass driver 330 is the left eye drive signal and the right eye glass 360 for driving the left eye glass 350. Each of the right eye driving signals for driving the driving signal is generated, the left eye driving signal is transmitted to the left eye glass 350, and the right eye driving signal is transmitted to the right eye glass 360.

As described above, the glass unit 340 includes a left eye glass 350 and a right eye glass 360, and opens and closes each glass according to a driving signal received from the glass driver 330.

<3D image processing process>

Hereinafter, a process of generating a left eye image and a right eye image by processing a 3D image according to a format of a 3D image will be described with reference to FIGS. 5A to 5C.

5A to 5C are diagrams for describing a processing method according to a format of a 3D image. First, FIG. 5A illustrates a method of displaying a 3D image on a screen when a 3D image is received according to a general frame sequence method.

As shown, the format of the 3D image according to the frame sequence method is a format in which one left eye image or one right eye image is inserted into one frame. Accordingly, the 3D image includes a frame including a left eye image L1 taken by a left eye camera-> a frame including a right eye image R1 taken by a right eye camera-> a frame including a left eye image L2 taken by a left eye camera. -> Frame with the right eye image R2 taken by the right eye camera->. Are entered in order of ', and they will be displayed on the screen in the order of input.

5B illustrates a method of displaying a 3D image on a screen when a 3D image is received according to a side by side method.

As shown, the format of the 3D image according to the side by side method is a format in which both the left eye image and the right eye image are included in one frame. In particular, the format of the 3D image according to the side by side method is a left eye image and a right eye image divided into left and right, a left eye image is provided on the left side, and a right eye image is provided on the right side.

According to such a format, the TV 200 divides each frame of the received 3D image into left and right by dividing each frame into left and right eye images, and alternately scales the separated left and right eye images by doubling the left and right images. Will be displayed on the screen.

Accordingly, the 3D image may include a left eye image in which the left portion L1 is enlarged 2 times among images included in the first frame, and a right eye image in which the right portion R1 is enlarged 2 times larger than the image included in the first frame. > Left eye image in which the left part L2 is enlarged 2 times among images included in the second frame-> Right eye image in which the right part R2 is enlarged 2 times among the images included in the second frame->. It is displayed on the screen in the order of '.

On the other hand, the process for processing the format of the 3D image according to the side-by-side method has been described as an example, but the process of processing the format of the 3D image according to the top-bottom method can be inferred therefrom. That is, for the 3D image format according to the top-bottom method, the image is separated into a left eye image and a right eye image by applying up and down scaling instead of left and right scaling scaling, and alternately outputs the separated left and right eyes images. In addition, the 3D image may be provided to the user.

5C illustrates a method of displaying a 3D image on a screen when a 3D image is received in a horizontal interleaving scheme.

As shown, the format of the 3D image according to the horizontal interleaving method is a format in which both the left eye image and the right eye image are included in one frame. In particular, the format of the 3D image according to the horizontal interleaving method is a format in which the left eye image and the right eye image are alternately arranged in rows.

In this format, the TV 200 divides each frame of the received 3D image into odd rows and even rows, and separates the left and right eyes images, and enlarges the separated left and right eyes images up and down twice. It will scale and display on the screen alternately.

Accordingly, the 3D image includes a left eye image in which the odd row portions L1-1 and L1-2 are enlarged twice by two times, and the right portion R1-in the image included in the first frame. 1, R1-2), respectively, 2 times magnified right eye image-> Left portion (L2-1, L2-2) of the image included in the second frame, respectively, 2 times in the left eye image-> included in the second frame Right eye image in which the right portions R2-1 and R2-2 are enlarged twice by 2 times. It is displayed on the screen in the order of '.

Of course, for the format of the 3D image according to the horizontal interleaving method, the left eye image is generated by interpolating even row portions using odd row portions among the images included in one frame without using the above-described scaling scaling method. It may be possible to generate a right eye image by interpolating odd row parts using the row parts.

In addition, a left eye image may be generated by outputting an image only for odd rows, and a right eye image may be generated by outputting an image only for even rows without using an enlarged scaling method or an interpolation method.

In the above description, a process of processing a format of a 3D image according to a horizontal interleaving method has been described as an example, but a process of processing a format of a 3D image according to a vertical interleaving method or a checkerboard method may be inferred therefrom. .

That is, the 3D image format according to the vertical interleaving method is divided into left and right eye images by column scaling or interpolation instead of row scaling or interpolation, and alternately outputs the separated left and right eye images. Thus, the 3D image may be provided to the user.

In addition, as for the format of the 3D image according to the checkerboard method, pixel scaling or interpolation, pixel group scaling or interpolation may be used.

<3D mode  And 2D Mode  What to do>

Hereinafter, a process of performing the 3D mode and the 2D mode will be described with reference to FIGS. 3 and 6 to 9B. 3, the operation of the components of the TV 200 according to the present embodiment will be described in detail.

The TV 200 may operate the display mode in 2D mode and 3D mode. Here, the 2D mode is a mode for displaying a two-dimensional image. When the TV 200 operates in the 2D mode, the image processing unit 220 of the TV 200 outputs the input image to the image output unit 230 by performing only a general image processing process.

The 3D mode is a mode for displaying a 3D image. When the TV 200 operates in the 3D mode, the image processor 220 of the TV 200 processes the input image as shown in FIGS. 5A to 5C to generate a left eye image and a right eye image. In this case, the image processor 220 generates one of a left eye image and a right eye image by applying any one of various types of 3D image formats. The image processor 220 alternately outputs the image output unit 230 to the left eye image and the right eye image. As such, in the 3D mode, the TV 200 displays the input image to implement the 3D image.

When a specific operation is input through the operation unit 270 in the 2D mode state, the control unit 240 of the TV 200 detects whether the input image is a 2D image or a 3D image. Here, the specific operation is an operation for switching the display mode to either 2D mode or 3D mode. That is, when the current display mode is the 2D mode, the specific operation is an operation for switching the display mode to the 3D mode. When the current display mode is the 3D mode, the specific operation is an operation for switching the display mode to the 2D mode.

Specifically, the specific operation may be an operation of pressing a specific button (for example, a display mode switching button) of the remote controller 290 controlling the TV 200. In addition, the specific operation may be an operation of pressing a specific button (for example, a display mode switching button) arranged on the TV 200. The specific operation may be an operation of selecting a specific item (for example, a display mode switching item) from a menu displayed on the screen.

The controller 240 may detect whether the input image is a 2D image or a 3D image by using header information of the input image. For example, a tag of whether an input image is a 2D image or a 3D image may be included in the header information of the input image.

In addition, the controller 240 may compare the upper, lower, left, and right regions of the input image with each other to determine whether a similar image exists for each region, and detect whether the input image is a 2D image or a 3D image. For example, when the input image is a top & bottom 3D image, the controller 240 compares the upper and lower regions of the input image, and the input image is 3 because the upper and lower regions are similar to each other. It is detected as a three-dimensional image. As such, the controller 240 may detect whether the input image is a 2D image or a 3D image.

When the input image is a 3D image, the controller 240 switches the display mode to the 3D mode and controls the 3D image to be displayed. That is, the controller 240 controls the input 3D image to be displayed as the left eye image and the right eye image through the processing shown in FIGS. 5A to 5C.

In addition, when the input image is a 2D image, the controller 240 converts the input 2D image into a 3D image. The controller 240 converts the 2D image into two and processes the 3D image to be expressed in 3D to generate a left eye image and a right eye image. In addition, the controller 240 converts the 2D image into a 3D image including a left eye image and a right eye image based on the input 2D image using various methods. At this time, the controller 240 converts the 2D image into a 3D image in a format that the TV 200 can support.

In addition, the controller 240 switches the display mode to the 3D mode and controls the converted 3D image to be displayed.

In addition, when a specific operation is input again through the operation unit 270 in the 3D mode state, the control unit 240 switches the display mode to the 2D mode. That is, it can be seen that a specific operation performs a toggle function of switching between 3D mode and 2D mode.

As such, the TV 200 may display the input image in the 3D mode regardless of whether the input image is a 2D image or a 3D image through one specific operation. Accordingly, the user can input one specific operation to execute the 3D mode and watch the 3D image without having to know whether the type of the input image is the 2D image or the 3D image.

6 is a flowchart provided to explain a 3D image providing method according to an embodiment of the present invention.

First, the TV 200 performs the 2D mode (S610) and receives an image (S620). Then, the TV 200 displays an image input in the 2D mode.

In this state, the TV 200 detects whether a specific operation is input (S630). When a specific operation is input (S630-Y), the TV 200 detects the type of the input image (S640). That is, the TV 200 detects whether the input image is a 2D image or a 3D image. Here, the specific operation is an operation for switching the display mode to either 2D mode or 3D mode. That is, when the current display mode is the 2D mode, the specific operation is an operation for switching the display mode to the 3D mode. When the current display mode is in the 3D mode, the specific operation is an operation for switching the display mode to the 2D mode.

Specifically, the specific operation may be an operation of pressing a specific button (for example, a display mode switching button) of the remote controller 290 controlling the TV 200. In addition, the specific operation may be an operation of pressing a specific button (for example, a display mode switching button) arranged on the TV 200. The specific operation may be an operation of selecting a specific item (for example, a display mode switching item) from a menu displayed on the screen.

The TV 200 may detect whether the input image is a 2D image or a 3D image by using header information of the input image. For example, a tag about whether an input image is a 2D image or a 3D image may be included in the header information of the input image.

In addition, the TV 200 may compare the top, bottom, left, and right areas of the input image with each other to determine whether a similar image exists for each region, and detect whether the input image is a 2D image or a 3D image. For example, when the input image is a top & bottom 3D image, the TV 200 compares the upper region and the lower region of the input image, and the input image is 3 because the upper region and the lower region are similar to each other. It is detected as a three-dimensional image. As such, the TV 200 may detect whether the input image is a 2D image or a 3D image.

If the input image is a 3D image (S650-Y), the TV 200 switches the display mode to the 3D mode (S660).

On the other hand, when the input image is a 2D image (S650-N), the TV 200 converts the input 2D image into a 3D image (S655). For example, the TV 200 converts the 2D image into two and processes the 3D image to be expressed in 3D to generate a left eye image and a right eye image. In addition, the TV 200 converts the 2D image into a 3D image including a left eye image and a right eye image based on the input 2D image using various methods. At this time, the TV 200 converts the 2D video into a 3D video in a format that can be supported.

The TV 200 switches the display mode to the 3D mode (S660) and displays the converted image in the 3D mode (S670). That is, the TV 200 displays the input 3D image as a left eye image and a right eye image through the processing shown in FIGS. 5A to 5C.

Thereafter, the TV 200 detects whether a specific operation is input again through the operation unit 270 in the 3D mode state (S680). If a specific operation is not input (S680-N), the TV 200 continues to display the image input in the 3D mode (S670).

On the other hand, when a specific operation is input (S680-Y), the TV 200 switches the display mode to the 2D mode (S690). That is, it can be seen that the specific operation performs a toggle function of switching between the 3D mode and the 2D mode. In operation S695, the TV 200 displays an image input in the 2D mode.

As such, the TV 200 may display the input image in the 3D mode regardless of whether the input image is a 2D image or a 3D image through one specific operation. Accordingly, the user can input one specific operation to execute the 3D mode and watch the 3D image without having to know whether the type of the input image is the 2D image or the 3D image.

FIG. 7 is a diagram illustrating a process of inputting a 3D image and a 2D image to a screen in 3D mode according to an embodiment of the present invention. As illustrated in FIG. 7, when the input image is a 3D image, when the specific operation is input, the TV 200 may switch to the 3D mode and confirm that the input 3D image is displayed in the 3D mode. In addition, even when the input image is a 2D image, the TV 200 may switch to the 3D mode when the same specific operation is input, and confirm that the input 2D image is displayed in the 3D mode.

Conventionally, when an input image is a 2D image and a 3D image, an operation for switching to a 3D mode is different from each other, and a user inputs a corresponding operation after knowing whether the input image is a 2D image or a 3D image. I had to. However, according to the present embodiment, when the input image is a 2D image and a 3D image, the user can determine whether the input image is a 2D image or a 3D image since the 3D mode can be executed by one specific operation. You can run 3D mode without the need.

8A and 8B are diagrams illustrating a process of manipulating an input 3D image to be displayed in a 2D mode and a 3D mode according to an embodiment of the present invention.

FIG. 8A illustrates a case where an input image is a 3D image 800 and a display mode of the TV 200 is a 2D mode. As shown in FIG. 8A, when the 3D image 800 is input in the 2D mode, the TV 200 displays the 3D image on the screen as it is without a 3D implementation process. Therefore, it can be seen that the top & bottom 3D image 800 is displayed on the screen as it is.

In this state, when the user presses the display mode switch button 295 of the remote controller 290, the TV 200 switches the display mode to the 3D mode. At this time, the TV 200 detects that the input image is a 3D image and displays the 3D image 800 input in the 3D mode without a separate conversion procedure.

FIG. 8B illustrates a case where the input image is the 3D image 800 and the display mode of the TV 200 is the 3D mode. As shown in FIG. 8B, when the 3D image 800 is input, the TV 200 displays the 3D image 800 in the 3D mode.

In this state, when the user presses the display mode switch button 295 of the remote controller 290, the TV 200 switches the display mode back to the 2D mode. That is, it can be seen that the display mode switch button 295 is a button for toggling the 2D mode and the 3D mode.

As such, when the 3D image 800 is input, the display mode may be switched between the 2D mode and the 3D mode using the display mode switch button 295.

9A and 9B are diagrams illustrating a process of manipulating an input 2D image 900 to be displayed in a 2D mode and a 3D mode, according to an exemplary embodiment.

FIG. 9A illustrates a case where an input image is a 2D image 900 and a display mode of the TV 200 is a 2D mode. As shown in FIG. 9A, when the 2D image 900 is input in the 2D mode, the TV 200 displays the 2D image 900 on the screen as it is. Therefore, it can be seen that the 2D image 900 is displayed on the screen as it is.

In this state, when the user presses the display mode switch button 295 of the remote controller 290, the TV 200 switches the display mode to the 3D mode. In this case, as shown in FIG. 9B, the TV 200 detects that the input image is the 2D image 900, and converts the input 2D image 900 to the 3D image 910. As shown in FIG. 9B, the TV 200 may confirm that the input 2D image 900 is converted into the 3D image 910 of the top & bottom format.

As shown in FIG. 9B, the converted 3D image 910 is displayed in the 3D mode.

In this state, when the user presses the display mode switch button 295 of the remote controller 290, the TV 200 switches the display mode back to the 2D mode. That is, it can be seen that the display mode switch button 295 is a button for toggling the 2D mode and the 3D mode.

As such, even when the 2D image 900 is input, the display mode can be switched between the 2D mode and the 3D mode using the display mode switch button 295 which is the same button.

As such, the TV 200 may display the input image in the 3D mode regardless of whether the input image is the 2D image or the 3D image through one display mode switch button 295. Accordingly, the user can press the one display mode switch button 295 to execute the 3D mode and watch the 3D image without having to know whether the type of the input image is the 2D image or the 3D image.

Meanwhile, in the present embodiment, the display mode switching button 295 disposed on the remote controller 290 is operated to execute the 3D mode. However, this is only an example, and any operation for switching to the 3D mode may be performed. Of course it is possible. For example, the specific operation may be an operation of pressing a specific button arranged on the TV 200, or may be an operation of selecting a specific item of a menu displayed on the TV 200.

Meanwhile, in the present embodiment, the display device is described as a TV, but this is only an example, and any device capable of displaying a 3D image may be possible. For example, the display device may be a 3D monitor, a 3D image projector, or the like.

In the above description, the preferred embodiments of the present invention have been illustrated and described, but the present invention is not limited to the above-described specific embodiments, and the present invention belongs to the present invention without departing from the gist of the present invention as claimed in the claims. Of course, various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention.

1 is a diagram illustrating a 3D image providing system according to an embodiment of the present invention;

2A to 2F are diagrams for describing a format of a 3D image;

3 is a block diagram of a TV according to an embodiment of the present invention;

4 is a block diagram of a shutter glass according to an embodiment of the present invention;

5A to 5C are diagrams for describing a processing method according to a format of a 3D image;

6 is a flowchart provided to explain a 3D image providing method according to an embodiment of the present invention;

FIG. 7 is a diagram illustrating a process of inputting a 3D image and a 2D image to a screen in 3D mode according to an embodiment of the present invention; FIG.

8A and 8B illustrate a process of manipulating an input 3D image to be displayed in a 2D mode and a 3D mode according to an embodiment of the present invention;

9A and 9B illustrate a process of manipulating an input 2D image to be displayed in a 2D mode and a 3D mode according to an embodiment of the present invention.

Claims (16)

In the 3D image providing method of the display device which can operate the display mode in the 2D mode for displaying the 2D image and the 3D mode for displaying the 3D image, Detecting whether an input image is a 2D image or a 3D image when a specific operation is input by a user in the 2D mode state; If the input image is a 3D image, switching the display mode to a 3D mode and displaying the 3D image; Converting the input 2D image into a 3D image when the input image is a 2D image; And And displaying the converted 3D image by switching the display mode to a 3D mode. The method of claim 1, The conversion step, 3D image providing method characterized in that the conversion to the 3D image including the left eye image and the right eye image generated based on the 2D image. The method of claim 1, The conversion step, And converting the 2D image into a 3D image in a format supported by the display device. The method of claim 1, The specific operation, 3D image providing method, characterized in that the operation for switching the display mode to any one of 2D mode and 3D mode. The method of claim 1, And switching the display mode to the 2D mode when the specific manipulation is input again by the user in the 3D mode state. The method of claim 1, The specific operation, 3D image providing method characterized in that the operation of pressing a specific button of the remote control for controlling the display device. The method of claim 1, The specific operation, 3D image providing method characterized in that the operation of pressing a specific button disposed on the display device. The method of claim 1, The specific operation, 3D image providing method characterized in that the operation of selecting a specific item from the menu displayed on the screen. A display apparatus operable in a 2D mode for displaying a 2D image and a 3D mode for displaying a 3D image, the display mode comprising: An operation unit receiving an operation of a user; When a specific operation is input through the operation unit in the 2D mode state, it is detected whether the input image is a 2D image or a 3D image, and when the input image is a 3D image, the display mode is switched to a 3D mode to display the 3D image. And a controller configured to control to be displayed and convert the input 2D image to a 3D image and to switch the display mode to a 3D mode to display the converted 3D image when the input image is a 2D image. Device. 10. The method of claim 9, The control unit, And a 3D image including a left eye image and a right eye image generated based on the 2D image. 10. The method of claim 9, The control unit, And converting the 2D image into a 3D image of a format supported by the display apparatus. 10. The method of claim 9, The specific operation, And an operation for switching the display mode to any one of a 2D mode and a 3D mode. 10. The method of claim 9, The control unit, And when the specific operation is input again through the operation unit in the 3D mode state, changing the display mode to a 2D mode. 10. The method of claim 9, The specific operation, Display operation, characterized in that for pressing the specific button of the remote control to control the display device. 10. The method of claim 9, The specific operation, And a specific button arranged on the display device. 10. The method of claim 9, The specific operation, Display operation, characterized in that for selecting a specific item from the menu displayed on the screen.

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