JP5496043B2 - Display control apparatus and display control method - Google Patents

Description

  The present invention relates to a display control apparatus and a display control method capable of displaying a stereoscopic image by performing an image quality enhancement process.

In recent years, the resolution of a monitor has been increased, and a technique for increasing the number of pixels of a low-quality image to improve the image quality and displaying it on the monitor is required.
As one of such high image quality processing, an image processing apparatus described in Patent Document 1 has been reported.
Specifically, in the cited document 1, an image frame is separated into a plurality of planes having different signal components, and the separated planes are separated into even line planes and odd line planes, and even line planes and odd line planes are separated. Are interpolated to detect the edges of the even and odd line planes that have been interpolated, and perform edge correction by multiplying the edge portion by a predetermined coefficient. A technique for synthesizing odd line planes is disclosed.

On the other hand, as a recent technical trend, a personal computer with a television function equipped with a built-in monitor capable of displaying stereoscopic images has been developed. When viewing a stereoscopic video content such as a stereoscopic video broadcast or a stereoscopic video DVD using such a personal computer, the polarizing plate method is adopted as the display method of the monitor, and the user wears polarized glasses to stereoscopic video. Can be watched.
However, when displaying stereoscopic images using the polarizing plate method, it is necessary to alternately distribute the image for the right eye and the image for the left eye for each line, so edge enhancement processing or dither processing that performs inter-line correction as high image quality processing, etc. When the image is applied to the image, there is a problem in that the image quality significantly decreases between the vertical lines.

JP 2000-115519 A

Therefore, when displaying stereoscopic images by the polarizing plate method, there is a strong demand for a technology that can prevent deterioration in image quality between vertical lines even when image quality enhancement processing is performed on stereoscopic images by an image quality enhancement circuit. ing.
The present invention relates to a display control apparatus capable of preventing deterioration in image quality between lines in the vertical direction even when a high-quality image processing is performed on a stereoscopic image by an image quality enhancement circuit when a stereoscopic image is displayed by a polarizing plate method. It is another object of the present invention to provide a display control method.

  In order to solve the above problem, the invention according to claim 1 is provided with an image quality improving circuit for displaying an image by performing an image quality improving process, and displays a stereoscopic image by a polarizing plate system. When displaying a stereoscopic video read from the application software in the display area, the display control means is provided for controlling to stop vertical line-to-line correction by the image quality improving circuit in the display area. It is characterized by that.

  The invention according to claim 5 is a display control method for displaying a stereoscopic image by a polarizing plate system, comprising a high image quality circuit for performing an image quality enhancement process on the image and displaying the image. When the read stereoscopic image is displayed in the display area, the display area includes a display control step for controlling to stop vertical line-to-line correction by the image quality improving circuit in the display area area.

  According to the present invention, when a stereoscopic image is displayed by the polarizing plate method, it is possible to prevent the image quality from being deteriorated between lines in the vertical direction even if the image quality improving process is performed on the stereoscopic image by the image quality improving circuit.

It is a block diagram for demonstrating the structure of the display control apparatus which concerns on embodiment of this invention. It is a flowchart for demonstrating operation | movement of the display control apparatus which concerns on embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

With reference to FIG. 1, the structure of the display control apparatus which concerns on embodiment of this invention is demonstrated.
FIG. 1 shows a characteristic configuration of a display control apparatus according to an embodiment of the present invention, and shows a characteristic configuration among hardware resources and software resources provided on a personal computer. In FIG. 1, video information (moving image data) and graphics information (still image data) recorded in target application software (hereinafter referred to as target software) SW 10 are appropriately transmitted via an image quality enhancement circuit 11. It is a figure which shows the example of the interface for displaying on the screen of the display 12, This display control apparatus has the control part provided with CPU and memory which are not shown in figure, a graphics controller, VRAM, etc.

  The target software SW10 is managed by an OS executed by the control unit, and the OS can notify the target software SW10 of the size of the desktop screen (corresponding to the screen size of the LCD) as necessary. The target software SW10 sends to the image quality adjustment software SW20 control information such as a moving image reproduction unit SW10c that outputs a video signal and 3D reproduction information, a 3D flag, a use start instruction, and an end instruction, and controls the image quality adjustment software. SW 10 a, window information SW 10 b including identification information such as a window title and window class, and a video output unit SW 10 d that outputs a video signal to the graphic driver 10 are provided.

The image quality adjustment software SW20 is installed in the HD in advance and is managed by the OS executed by the control unit. When the target software SW10 is activated by, for example, a user operation, the image quality adjustment software SW20 is activated as necessary. Then, the OS can notify the image quality adjustment software SW20 of the size of the desktop screen (corresponding to the screen size of the LCD) and the like as necessary.
The image quality adjustment software SW20 includes an image quality setting information storage unit SW20a and a target software list SW20e, and an active window determination unit SW20b, an image quality setting selection unit SW20c, an image quality enhancement circuit control unit SW20d, and the like are executed by the control unit. .

Specifically, the image quality setting information storage unit SW20a stores target software image quality setting information such as brightness, saturation, hue, contrast value, and gamma correction value, and these information are output to the image quality setting selection unit SW20c. The The active window determination unit SW20b receives window information SW10b including window identification information such as a window title and a window class from the target software SW10, and determines an active window on the current display 12.
The image quality setting selection unit SW20c selects appropriate information from a plurality of target software image quality setting information based on the active software information, and outputs the target software image quality setting information to the image quality enhancement circuit control unit SW20d. The image quality enhancement circuit control unit SW20d transmits information such as the image quality setting information for the target software and a control command for vertical correction processing to the image quality enhancement circuit 11.

  The graphic driver 10 is driver software for outputting the video output from the video output unit SW10d of the target software SW10 to the image quality improving circuit 11.

  The image quality enhancement circuit 11 includes image quality enhancement circuits such as a dither circuit and an edge enhancement circuit for performing an image quality enhancement function. The image quality setting information for the target software output from the image quality enhancement circuit control unit SW20d, the vertical direction Receive and set information such as control instructions for the correction process.

  Specifically, the dither circuit generates a dither coefficient corresponding to each pixel position of each of a plurality of pixel groups in the horizontal direction and the vertical direction on the frame image for a predetermined video area in the frame image, and Is obtained by adding the dither coefficient to the pixel data of the video corresponding to the above as dither processing pixel data. The dither circuit outputs the dithered pixel data in the vertical direction and the dithered pixel data in the horizontal direction when the vertical direction correction valid flag is set, while the vertical direction correction stop flag is set. If it is, the dither processing in the vertical direction is stopped and the dither processing pixel data in the horizontal direction is output.

  The edge enhancement circuit compares pixel values of center pixels with respect to peripheral pixels in the horizontal and vertical directions for a predetermined video area in a frame image, and performs center pixel enhancement processing based on the comparison result. An emphasis determination process for determining whether or not to perform and a process for determining the pixel value of the center pixel are performed. The edge emphasis circuit emphasizes the vertical edge when the vertical direction correction valid flag is set, and emphasizes the horizontal edge while the vertical direction correction stop flag is set. Stops edge enhancement in the vertical direction and emphasizes edges in the horizontal direction.

  The display 12 is composed of, for example, an LCD, and the screen (panel) has a resolution of, for example, 1024 × 768.

Next, a basic operation of the display control apparatus according to the embodiment of the present invention will be described with reference to FIG. Note that steps S10 to S80 shown in FIG. 2 represent characteristic processing of the image quality adjustment software SW10, and are executed by the control unit under the management of the OS.
As described above, the image quality adjustment software SW10 is installed in the HD in advance and is managed by the OS executed by the control unit. When the target software SW10 is activated by a user operation, for example, it is activated as necessary. Is done.

  First, in step S10, the control unit acquires information on the active window. That is, identification information including the window title and window class of the foremost active window among a plurality of applications being displayed on the display 12 is acquired.

  In step S20, the control unit determines whether the active window displayed on the forefront of the display 12 is the target software. That is, if the window title of the active window acquired in step S10 matches the window title in the identification information acquired from the target software SW10, it is the target software, so the process proceeds to step S30. If it is not the target software, the process returns to step S10.

Incidentally, it may be assumed that the user changes the active window from the target software window to another window using a mouse (not shown).
Therefore, in step S30, the control unit determines whether or not the active window has changed. That is, when the window title of the active window changes from the window title of the previous window to the window title of another window, the process proceeds to step S40. On the other hand, if there is no change in the active window, the process proceeds to step S70.

  Next, in step S40, the control unit determines whether there is a 3D flag. That is, it is determined whether there is a 3D flag indicating that the target software is 3D video as one piece of information notified from the target software SW10. If there is a 3D flag, the process proceeds to step S50. On the other hand, if there is a 3D flag, the process proceeds to step S60.

  Next, in step S50, the control unit invalidates the vertical correction processing of the image quality improving circuit 11 and sets the image quality setting for active software to be valid. That is, vertical indicating that the vertical correction processing is stopped for the edge emphasis processing and the dither circuit that perform vertical correction processing among the plurality of circuits included in the high image quality circuit 11a of the image quality improvement circuit 11. The direction correction stop flag is set to invalidate the processing, and the image quality setting of the target software displayed in the active window is set to be valid. The vertical direction correction stop flag and the target software image quality setting information are transmitted to the image quality improving circuit 11 by the image quality improving circuit control unit SW20d.

The image quality enhancement circuit 11 that has received the vertical direction correction stop flag and the target software image quality setting information stops the vertical direction correction processing for the edge enhancement circuit and dither circuit provided therein. Similarly, the image quality is set using the image quality setting information for the target software.
As a result of this processing, in the stereoscopic video of the target software displayed in the active window, the stereoscopic video in which the vertical line-to-line correction by edge enhancement processing and dither processing is stopped is displayed from the display 12 in the active window.
As a result, when a stereoscopic image is displayed by the polarizing plate method, it is possible to prevent the image quality from being deteriorated between the lines in the vertical direction even if the image quality improving circuit 11 performs the image quality improving process on the stereoscopic image.

Next, in step S60, the control unit effectively sets the image quality setting for the active software. That is, the image quality setting of the target software displayed in the active window is set to be valid. The image quality setting information for the target software is selected by the image quality setting selection unit SW20c, and this information is transmitted to the image quality improvement circuit 11 by the image quality improvement circuit control unit SW20d.
The image quality enhancement circuit 11 that has received the target software image quality setting information sets the image quality using the target software image quality setting information.

  Next, in step S70, the control unit determines whether or not there is a change in the 3D flag. That is, it is determined whether or not the 3D flag notified from the target software SW10 in the previous process has changed from valid to invalid, or changed from invalid to valid. If the 3D flag has changed, the process proceeds to step S80. On the other hand, if the 3D flag has not changed, the process proceeds to step S10.

Next, in step S80, the control unit changes the ON / OFF state of the vertical correction process. That is, since the 3D flag notified from the target software SW10 has changed, the vertical correction processing of the image quality improving circuit 11 is reset to be valid or invalid.
Here, when the 3D flag changes from valid to invalid, 3D display is not performed in the window. Therefore, edge enhancement processing for performing vertical correction processing among a plurality of circuits included in the image quality enhancement circuit 11 and A vertical direction correction valid flag indicating that the vertical direction correction process is to be enabled is set for the dither circuit to enable the process. The vertical direction correction valid flag is transmitted to the image quality improvement circuit 11 by the image quality improvement circuit control unit SW20d.

The image quality improving circuit 11 that has received the image quality setting information SW20a including the vertical direction correction valid flag effectively sets the vertical direction correction processing for the edge enhancement circuit and dither circuit included in the image quality improving circuit 11. .
As described above, when the 3D flag acquired from the target software indicates invalidity, vertical line-to-line correction is performed by the image quality enhancement circuit 11 on the display area displaying the 2D video read from the target software. To control. As a result, line correction can be performed in the edge emphasis circuit and dither circuit, so that the user can enjoy high-quality video.

  On the other hand, when the 3D flag changes from invalid to valid, 3D display is performed in the window, so that the edge enhancement processing and dither circuit for performing vertical correction processing among a plurality of circuits included in the image quality enhancement circuit 11 are performed. On the other hand, a vertical direction correction stop flag indicating that the vertical direction correction process is invalidated is set to invalidate the process. The vertical direction correction stop flag and the target software image quality setting information are transmitted to the image quality improving circuit 11 by the image quality improving circuit control unit SW20d.

The image quality enhancement circuit 11 that has received the vertical direction correction stop flag and the image quality setting information for the target software sets the vertical direction correction processing to be invalid with respect to the edge enhancement circuit and dither circuit provided therein. Then, the image quality improving circuit 11 that has received the target software image quality setting information sets the image quality using the target software image quality setting information.
As described above, when the 3D flag acquired from the target software indicates validity, the vertical line-to-line correction by the image quality improving circuit 11 is stopped for the display area displaying the 3D video read from the target software. To control. As a result, the line-to-line correction is stopped in the edge enhancement circuit and the dither circuit, so that a high-quality image can be output by the edge enhancement circuit and the dither circuit without causing a significant deterioration in image quality between the lines in the vertical direction. Therefore, the user can enjoy high-quality video.

  The present invention can be used for a personal computer capable of displaying a stereoscopic image by performing a high quality image processing.

DESCRIPTION OF SYMBOLS 10 Graphic driver 11 Image quality improvement circuit 12 Display SW10 Target application SW10a Image quality adjustment software control part SW10b Window information SW10c Movie reproduction part SW10d Image | video output part SW20 Image quality adjustment software SW20a Image quality setting information preservation | save part SW20b Active window discrimination | determination part SW20c Image quality setting selection part SW20d Image quality control circuit controller SW20e List of target software

Claims (5)

A display control device that includes a high image quality circuit for performing high image quality processing on an image for display, and displays a stereoscopic image by a polarizing plate method,
When displaying a stereoscopic image read out from application software in a display area, the display area includes display control means for controlling to stop vertical line-to-line correction by the image quality improving circuit in the display area area. Display control device.   2. The display control apparatus according to claim 1, wherein the display control means controls a dither circuit and an edge enhancement circuit provided in the image quality improving circuit. An acquisition means for acquiring a solid flag notified from application software is provided.
When the acquired stereoscopic flag indicates validity, the display control means performs vertical line-to-line correction by the image quality improving circuit on a display area for displaying the stereoscopic video read from the application software. The display control apparatus according to claim 1, wherein the display control apparatus is controlled to stop.   When the stereoscopic flag acquired by the acquisition unit indicates invalidity, the display control unit performs a vertical direction by the image quality improving circuit on the display area displaying the 2D video read from the application software. The display control apparatus according to claim 1, wherein control is performed so that interline correction is performed. A display control method for displaying a stereoscopic image by a polarizing plate method, including a high image quality circuit for performing a high image quality processing on the image and displaying the image,
And a display control step for controlling to stop vertical line-to-line correction by the image quality improving circuit in the display area when the stereoscopic image read from the application software is displayed in the display area. Display control method to be performed.

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