KR20110090640A - Image display device and operating method for the same - Google Patents
Image display device and operating method for the same Download PDFInfo
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- KR20110090640A KR20110090640A KR1020100010548A KR20100010548A KR20110090640A KR 20110090640 A KR20110090640 A KR 20110090640A KR 1020100010548 A KR1020100010548 A KR 1020100010548A KR 20100010548 A KR20100010548 A KR 20100010548A KR 20110090640 A KR20110090640 A KR 20110090640A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/40—Image enhancement or restoration by the use of histogram techniques
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/302—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays
- H04N13/31—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays using parallax barriers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/324—Colour aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/327—Calibration thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/361—Reproducing mixed stereoscopic images; Reproducing mixed monoscopic and stereoscopic images, e.g. a stereoscopic image overlay window on a monoscopic image background
Abstract
Description
The present invention relates to an image display apparatus and an operation method thereof. More particularly, the present invention relates to an image display apparatus or an image display method for correcting a stereoscopic image.
The image display device is a device having a function of displaying an image that a user can watch. The user can watch the broadcast through the image display device. A video display device displays a broadcast selected by a user among broadcast signals transmitted from a broadcast station on a display. Currently, broadcasting is shifting from analog broadcasting to digital broadcasting all over the world.
Digital broadcasting refers to broadcasting for transmitting digital video and audio signals. Digital broadcasts are more resistant to false noise than analog broadcasts, resulting in lower data loss, better error correction, higher resolution, and clearer pictures. In addition, unlike analog broadcasting, digital broadcasting is capable of bidirectional services.
Recently, researches on various contents that can be provided through stereoscopic images and stereoscopic images have been actively conducted, and stereoscopic image technology has become more and more common and practical in computer graphics as well as in various other environments and technologies. In addition, the above-described digital broadcasting can transmit a stereoscopic image, and a development for a device for reproducing the same is also in progress.
However, a stereoscopic image is displayed using a left eye image and a right eye image, and the image quality of the stereoscopic image is basically determined by the image quality of the left eye image and the right eye image. In particular, when the left eye image and the right eye image have different image quality or have different gradations or contrast ratios, the left eye image and the right eye image have different image quality, thereby providing better stereoscopic image quality.
Accordingly, an object of the present invention is to increase the quality of an image when displaying a stereoscopic image. In particular, when the pixel values of the same point of the left eye image and the right eye image are different, the left eye image and the right eye image are equally corrected based on the image having better image quality, so that the image already provided and the information on the image are within the range. I want to improve the quality of the image. In particular, the emphasis is on image gradation, contrast ratio, and sharpness.
In accordance with another aspect of the present invention, there is provided a method of displaying a stereoscopic image using a left eye image and a right eye image, including extracting a histogram between the left eye image and the right eye image; If the histogram of the left eye image and the histogram of the right eye image are different, correcting pixel values of the left eye image corresponding pixel of the left eye image and the right eye image corresponding pixel of the right eye image; and correcting the pixel value of the left eye image. And outputting a right eye image, wherein the left eye image corresponding pixel and the right eye image corresponding pixel have the same coordinate values and different pixel values within the left eye image and the right eye image, respectively.
In addition, the image display device according to an embodiment of the present invention for displaying the three-dimensional image by using a left eye image and a right eye image, extracting the histogram of the left eye image and the right eye image and the histogram of the left eye image And a control unit for equally correcting pixel values of a left eye image corresponding pixel of the left eye image and a right eye image corresponding pixel of the right eye image when the histogram of the right eye image is different from the histogram. And a display unit, wherein the left eye image corresponding pixel and the right eye image corresponding pixel have the same coordinate values and different pixel values in the left eye image and the right eye image, respectively.
According to the exemplary embodiment of the present invention, the stereoscopic image may be provided to the user, and the image quality of the stereoscopic image may be improved. By correcting the other image based on a better quality image by using histograms and meta information included in the left eye image and the right eye image, the image quality of the stereoscopic image can be improved without obtaining additional information. In particular, the quality of an image is improved in terms of gradation, contrast ratio, and sharpness of a stereoscopic image. In addition, the operation process required for image correction can be minimized, and different calculation methods can be applied according to the characteristics of each pixel.
1 is an internal block diagram of an image display apparatus according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating an example of an external device connectable to the image display device of FIG. 1. FIG.
3 is a diagram illustrating an example of an internal block diagram of the controller of FIG. 1;
4 is a diagram illustrating separation of a 2D video signal and a 3D video signal in the formatter of FIG. 3.
FIG. 5 is a diagram illustrating various formats of 3D images output from the formatter of FIG. 3. FIG.
FIG. 6 is a diagram referred to describe scaling of 3D images output from the formatter of FIG. 3. FIG.
7A to 7C illustrate an example of an image displayed on the image display apparatus of FIG. 1.
8 is a flowchart illustrating a method of operating an image display apparatus according to an exemplary embodiment.
9 is a flowchart illustrating a method of operating an image display apparatus according to another exemplary embodiment.
10 is a flowchart illustrating a method of operating an image display apparatus according to another exemplary embodiment.
11 and 12 are diagrams illustrating a left eye image, a right eye image, and histograms before correction.
FIG. 13 is a diagram illustrating a left eye image, a right eye image, and histograms corrected by the image display apparatus and the operation method according to the exemplary embodiment described with reference to FIG. 10.
Hereinafter, with reference to the drawings will be described the present invention in more detail.
The suffixes "module" and "unit" for components used in the following description are merely given in consideration of ease of preparation of the present specification, and do not impart any particular meaning or role by themselves. Therefore, the "module" and "unit" may be used interchangeably.
1 is a block diagram illustrating an image display apparatus according to an exemplary embodiment of the present invention.
Referring to FIG. 1, the
The
For example, if the selected RF broadcast signal is a digital broadcast signal, it is converted into a digital IF signal (DIF). If the analog broadcast signal is converted into an analog baseband video or audio signal (CVBS SIF). That is, the
Also, the
Meanwhile, the
The
For example, when the digital IF signal output from the
For example, when the digital IF signal output from the
The
On the other hand, the
The stream signal output from the
The external signal input /
The external signal input /
The A / V input / output unit includes an Ethernet terminal, a USB terminal, a Composite Video Banking Sync (CVBS) terminal, a component terminal, and an S-video to input video and audio signals of an external device to the
The wireless communication unit may perform a wireless internet connection. The
In addition, the wireless communication unit may perform near field communication with other electronic devices. The
In addition, the external signal input /
For example, when the set-top box is a set-top box for an Internet Protocol (IP) TV, the video, audio, or data signal processed by the set-top box for the IP TV may be transmitted to the
Meanwhile, the above-described IPTV may mean ADSL-TV, VDSL-TV, FTTH-TV, etc. according to the type of transmission network, and include TV over DSL, Video over DSL, TV overIP (TVIP), and Broadband TV ( BTV) and the like. In addition, IPTV may also mean an Internet TV capable of accessing the Internet, or a full browsing TV.
In addition, the external signal input /
The
In addition, the
The
1 illustrates an embodiment in which the
The
The
Although not shown in FIG. 1, the
The
The
In addition, the
In addition, the
The image signal processed by the
In addition, the
In addition, the
The voice signal processed by the
In addition, the
In addition, the
The signal generated for the graphic or text display described above may include various data such as a user interface screen, various menu screens, widgets, and icons of the
Meanwhile, when generating an OSD signal, the
In addition, the
Although not shown in the drawing, a channel browsing processor may be further provided to generate a thumbnail image corresponding to the channel signal or the external input signal. The channel browsing processor receives a stream signal TS output from the
The
As another example, the user may input another type of video or audio output command through the
The
The
The
To this end, the
The independent display method may implement a 3D image by the
Meanwhile, the additional display method may implement a 3D image by using an additional display in addition to the
The
The
The
Although not shown in the drawing, the
The touch sensor may be a touch screen constituting the
Each sensor described above transmits a result of sensing a user's voice, touch, location, and motion to a separate sensing signal processor (not shown), or first interprets the sensing result and generates a corresponding sensing signal to control the controller. It can be entered at 170.
The sensing signal processor (not shown) may process a signal generated by the sensing unit (not shown) and transmit the signal to the
The
On the other hand, the video display device described in the present specification is a TV receiver, a mobile phone, a smart phone (notebook computer), a digital broadcasting terminal, PDA (Personal Digital Assistants), PMP (Portable Multimedia Player), etc. May be included.
Meanwhile, a block diagram of the
FIG. 2 is a diagram illustrating an example of an external device connectable to the image display device of FIG. 1. As shown, the
In the present embodiment, an external device that may be connected to the
The
In addition, the
Data of an external device connected through the
The
When the
3 is a diagram illustrating an example of an internal block diagram of the controller of FIG. 1, FIG. 4 is a diagram illustrating separation of a 2D video signal and a 3D video signal in the formatter of FIG. 3, and FIG. 5 is an output from the formatter of FIG. 3. FIG. 6 is a diagram illustrating various formats of 3D images, and FIG. 6 is a diagram referred to describe scaling of 3D images output from the formatter of FIG. 3.
The
First, as shown in FIG. 3 (a), the
The
Meanwhile, as described above, the signal input to the
For example, when the demultiplexed video signal is an encoded 2D video signal of MPEG-2 standard, it may be decoded by an MPEG-2 decoder.
In addition, for example, when the demultiplexed 2D video signal is a digital video broadcasting (DMB) method or an encoded video signal of H.264 standard according to DVB-H, it may be decoded by an H.264 decoder.
Also, for example, when the demultiplexed video signal is a depth image of MPEC-
Also, for example, when the demultiplexed video signal is a multi-view video according to MVC (Multi-view Video Coding), it may be decoded by an MVC decoder.
Also, for example, when the demultiplexed video signal is a free view video according to a free-viewpoint TV (FTV), it may be decoded by an FTV decoder.
Meanwhile, the image signal decoded by the
The image signal decoded by the
Here, the format of the 3D video signal is a side by side format (FIG. 5A) in which the left eye video signal L and the right eye video signal R are arranged left and right, as shown in FIG. Top / Down format (FIG. 5B) to arrange, Frame Sequential format (FIG. 5C) to arrange by time division, Interlaced format which mixes the left eye signal and the right eye video signal by line 5d), a checker box format (FIG. 5E) for mixing the left eye image signal and the right eye image signal for each box.
Meanwhile, when the decoded video signal includes a caption or video signal related to data broadcasting, the
The
Whether the decoded video signal is a 2D video signal or a 3D video signal includes a 3D video flag or 3D video metadata or 3D video in a header of a stream indicating that the video signal is a 3D video. The determination may be made by referring to the format information and the like.
The 3D image flag, the 3D image metadata, or the format information of the 3D image may include location information, area information, or size information of the 3D image in addition to the 3D image information.
Meanwhile, the 3D video flag, the 3D video metadata, or the format information of the 3D video may be decoded at the time of stream demultiplexing and input to the
The
The
The formatter 175 may determine the format of an input video signal by referring to a data signal related to the video signal. The formatter 175 may convert the input image signal into a format suitable for the
4, a 2D video signal and a 3D video signal are separated from the decoded video signal received by the
First, as shown in FIG. 4A, when the
Next, as shown in FIG. 4B, when both of the
Next, as shown in FIG. 4C, when the
Next, as shown in FIGS. 4D and 4E, when one of the
For example, an edge may be detected within a 2D image signal according to a 3D image generation algorithm, and an object according to the detected edge may be separated and generated into a 3D image signal. For example, the selectable object may be detected within the 2D video signal according to the 3D video generating algorithm, and the object may be generated by separating the object into the 3D video signal. In this case, the generated 3D image signal may be separated into a left eye image signal L and a right eye image signal R as described above. Meanwhile, a portion of the 2D image signal except for the object region generated as the 3D image signal may be output as a new 2D image signal.
Meanwhile, when both the
Meanwhile, when there is 3D image flag, 3D image metadata, or format information of the 3D image, the
Meanwhile, the 3D image signal output from the
FIG. 5 is a diagram referred to for describing a 3D video signal format that may be generated through the
Meanwhile, the user may select any one of the formats illustrated in FIG. 5 as an output format. When the user selects the Top / Down format as the output format of the
Meanwhile, the 3D video signal input to the
Meanwhile, 3D image signals having different depths may be separated into different left eye image signals and right eye image signals due to depth differences. That is, the left eye image signal and the right eye image signal may be changed according to the depth of the 3D image signal.
Meanwhile, when the depth of the 3D video signal is changed according to a user's input or setting, the
In addition, the
Referring to FIG. 6, the
As shown in FIG. 6A, the 3D image signal or the 3D object in the 3D image signal may be enlarged or reduced as a whole at a predetermined ratio, and as shown in FIG. 6B, the 3D object may be partially enlarged or reduced (a trapezoidal shape). )You may. In addition, as shown in FIG. 6C, at least a part of the 3D object may be rotated (parallel quadrilateral form). Through such scaling, a 3D effect, or 3D effect, can be emphasized on the 3D image signal or the 3D object in the 3D image signal.
Meanwhile, the 3D image signal of FIG. 6 may be a left eye image signal or a right eye image signal corresponding to the second image signal of FIG. 4A. That is, the image may be a left eye image signal or a right eye image signal corresponding to the PIP image.
As a result, the
The
Whether the object is a 2D OSD object or a 3D OSD object may be determined according to a user input or according to the size of the object or whether the object is a selectable object.
Unlike the
As shown in FIG. 5, the output format may be any one of various formats in which a left eye and a right eye are combined. In this case, the output format is the same as the output format of the
The
The
On the other hand, the internal block diagram inside the
First, the
The
Meanwhile, a block diagram of the
FIG. 7 is a diagram illustrating an example of an image displayed on the image display apparatus of FIG. 1.
Referring to the drawing, the
FIG. 7A illustrates an image displayed on the
On the other hand, for example, when displaying a 3D image or the like by an additional display method such as polarized glasses, if the user does not wear polarized glasses or the like, the image to be viewed is not in focus.
That is, as shown in FIG. 7B, when viewing without wearing polarized glasses, the 3D objects 353a, 353b, and 353c may not be in focus. The same may be true of the
FIG. 7C illustrates that the
Meanwhile, in the image display apparatus displaying a 3D image according to a single display method, the image and the 3D object shown to the user may be as shown in FIG. 7C even if the user does not wear polarized glasses.
On the other hand, the object in the present specification, the object is information on the
For example, the object may include a volume control button, a channel control button, an image display control menu, an icon, a navigation tab, a scroll bar, a progressive bar, a text box, and a window displayed on the
Through such an object, the user may recognize information about the
Meanwhile, in the present specification, the depth of the 3D object protruding in the user direction is set to (+), and the depth of the 2D image or the 3D image displayed on the
Meanwhile, the 3D object in the present specification is an object processed to have a three-dimensional effect, and includes an object having a three-dimensional effect or an object having a different depth by scaling illustrated in FIG. 6.
In FIG. 7C, an example of a 3D object is illustrated as a PIP image, but is not limited thereto, and may be an EPG representing broadcast program information, various menus, widgets, icons, etc. of an image display device.
8 is a flowchart illustrating a method of operating an image display apparatus according to an exemplary embodiment.
As described above, the image display apparatus according to an embodiment of the present invention generates a left eye image and a right eye image for displaying a stereoscopic image, or receives a left eye image signal for the left eye image and a right eye image signal for the right eye image. However, when the histogram of the left eye image and the right eye image are different, the image quality of the stereoscopic image may be improved by correcting pixel values of the image based on the image having better image quality.
To this end, the
When the histogram for the binocular image is derived through the above-described process, the histogram of the left eye image and the histogram of the right eye image are compared (S820). As a result of the comparison, if the histograms of the two images are different, the pixel values are corrected at points having the same pixel value but different positions in the image (S830). Here, a point or a pixel at the same position in the image is referred to as a corresponding pixel. In particular, a corresponding pixel in the left eye image may be referred to as a left eye image corresponding pixel and a corresponding pixel in the right eye image may be referred to as a right eye image corresponding pixel.
The left eye image corresponding pixel and the right eye image corresponding pixel are two pixels which represent the same point in the stereoscopic image when the image is output. Therefore, the left eye image corresponding pixel and the right eye image corresponding pixel have the same coordinate values in the left eye image and the right eye image, respectively. When the left eye image corresponding pixel and the right eye image corresponding pixel have different pixel values, these corresponding pixels are subjected to pixel value correction, and a step of searching for the corresponding pixels may be added.
When the left eye image corresponding pixel and the right eye image corresponding pixel having different pixel values are found, the
There may be various examples of what value the pixel values of the left eye image corresponding pixel and the right eye image corresponding pixel are corrected. For example, the image quality of the stereoscopic image may be improved by correcting the pixel value of the corresponding pixel of the other image based on the image having the better image quality among the left eye image and the right eye image. In addition, as described above, the pixel value of the corresponding pixel of the other image may be corrected based on the better image of the left eye image and the right eye image, or the pixel value of the two pixels may be corrected by an average value of the pixel values of the two pixels. It may be. A method of correcting a pixel value of a left eye image corresponding pixel or a right eye image corresponding pixel will be described in detail later with reference to other embodiments.
The
9 is a flowchart illustrating a method of operating an image display apparatus according to another exemplary embodiment.
When an image signal for displaying a stereoscopic image (here, the image signal includes a left eye image signal and a right eye image signal) is generated or received, the
Gradation refers to the concentration transition stage from the darkest part of the image to the lightest effective part of the image. As the gray level of the image is better, the level of contrast is subdivided, so that the change from the dark part to the bright part of the image can be naturally expressed sequentially. In order to compare the gradation of the left eye image and the right eye image, the gradation of the image may be numerically converted to a gradation value, and then the gradation value of the left eye image and the gradation value of the right eye image may be compared with each other. In this case, an image having a higher gradation value may be determined as an image having a better gradation.
Contrast ratio refers to the difference in brightness between the brightest and darkest parts of the picture. That is, the contrast ratio of an image represents a difference in luminance between the darkest part (the blackest part) and the brightest part (the whitest part) in the image. Therefore, the sharpness of both images may look different depending on the contrast ratio of left and right eye images.
That is, according to the exemplary embodiment described with reference to FIG. 9, the pixel value may be corrected based on an image having better gradation or an image having higher sharpness according to contrast ratio. The pixel value of the pixel corresponding to the left eye image corresponding pixel or the pixel value of the pixel corresponding to the right eye image is corrected based on the image having a higher gray level value. For example, when the gradation value of the left eye image is higher or the contrast ratio is higher, the pixel value of the right eye image corresponding pixel having another pixel value is corrected based on the pixel value of the left eye image corresponding pixel. Similarly, when the gradation value or contrast ratio of the right eye image is higher, the pixel value of the pixel corresponding to the left eye image is corrected to the pixel value of the pixel corresponding to the right eye image (S930). As a result, according to the exemplary embodiment described with reference to FIG. 9, the pixel value correction of the corresponding pixel is performed only on one of the left eye image and the right eye image.
When the pixel values of the left eye image or the right eye image are corrected, the
10 is a flowchart illustrating a method of operating an image display apparatus according to another exemplary embodiment.
When an image signal for displaying a stereoscopic image (here, the image signal may include a left eye image signal and a right eye image signal) is generated or received, the
As a result of the search, the pixel values of the corresponding pixels having different pixel values, that is, the pixel value correction targets, may be corrected in different ways according to the area of the pixel value. The pixel value of the left eye image corresponding pixel, the pixel value of the right eye image corresponding pixel, the pixel value of the left eye image corresponding pixel and the pixel value of the right eye image corresponding pixel according to a value and a pixel value of the right eye image corresponding pixel. The pixel value is corrected based on one of average values. As an example, it is assumed that the total range of
The
If the pixel value of the left eye image corresponding pixel and the right eye image corresponding pixel is greater than or equal to 0 and smaller than the first reference value, for example, the pixel value of the left eye image corresponding pixel is smaller than the pixel value of the right eye image corresponding pixel, the
When the pixel value of the left eye image corresponding pixel or the right eye image corresponding pixel to be corrected is smaller than the first reference value, the
If the pixel value of the left eye image corresponding pixel or the right eye image corresponding pixel to be corrected is larger than or equal to the first reference value and smaller than the second reference value, in this case, the pixel value of the left eye image corresponding pixel and the pixel value of the right eye image corresponding pixel The average value serves as a reference for pixel value correction. In other words, when a pixel value is corrected for a pixel having a medium brightness in the image, the pixel value is corrected for this part by unifying the brightness between the left and right eye images.
To this end, the method may further include calculating an average value of the pixel value of the pixel corresponding to the left eye image corresponding pixel and the pixel value of the pixel corresponding to the right eye image (S1060). The average value may be any one of an average value according to an arithmetic mean, geometric mean, harmonic mean, and the like. There is no particular limitation on a method of calculating the average value.
That is, when the pixel values of the pixel corresponding to the left eye image and the pixel corresponding to the right eye image are greater than or equal to the first reference value and smaller than the second reference value, the
The
That is, if there is a difference between the left eye image and the right eye image with respect to the brightly displayed portion in the image, the pixel value of the remaining image is corrected based on the brighter side as far as the portion is concerned. As a result, the overall contrast ratio of the screen may increase, and the sharpness or contrast of the screen may increase. The
11 and 12 are diagrams illustrating a left eye image, a right eye image, and histograms before correction. FIG. 13 is a diagram illustrating a left eye image, a right eye image, and histograms corrected by the image display apparatus and the operation method according to the exemplary embodiment described with reference to FIG. 10.
11 illustrates a left eye image before extraction of a left eye image corresponding pixel and correction of pixel values, and a histogram before correction of the left eye image. The left eye
13 illustrates a left / right eye image and a histogram after pixel values of corresponding pixels in the left eye image and the right eye image are equally corrected. Since the left eye image and the right eye image are the same after the correction, the left eye image and the right eye image are not separately illustrated. FIG. 13 is also a histogram of pixels having a pixel value greater than or equal to a second reference value in the corrected
That is, the left eye
Comparing the left eye
Similarly, when comparing the left eye
As a result, it is expected that the corrected first region of the corrected image is corrected according to the left eye first region, the corrected second region according to the right eye second region, and the contrast ratio of the corrected image shown in the histogram becomes more pronounced due to the pixel value correction. have.
110: tuner unit
120: demodulator
130: external signal input and output unit
140: storage unit
150: interface unit
170:
180: display
Claims (18)
Extracting histograms of the left eye image and the right eye image;
Correcting pixel values of a left eye image corresponding pixel of the left eye image and a right eye image corresponding pixel of the right eye image if the histogram of the left eye image is different from the histogram of the right eye image; And
And outputting a left eye image and a right eye image in which the pixel values are corrected.
And the left eye image corresponding pixel and the right eye image corresponding pixel have the same coordinate values and different pixel values in the left eye image and the right eye image, respectively.
After comparing the histogram of the left eye image and the histogram of the right eye image, the left eye image corresponding pixel and the right eye image correspond to the left eye image and the right eye image, respectively, using the histogram of the left eye image and the histogram of the right eye image. Further comprising finding pixels
Correcting the pixel value,
And correcting the other one of the pixel values of the pixel value of the pixel corresponding to the left eye image and the pixel value of the pixel corresponding to the right eye image.
An operation method of an image display apparatus, wherein one of a pixel value of the pixel corresponding to the left eye image or a pixel value of the pixel corresponding to the right eye image is corrected based on an image having a higher gray level value among the left eye image and the right eye image; .
And correcting one of a pixel value of the pixel corresponding to the left eye image or a pixel value of the pixel corresponding to the right eye image based on an image having a higher contrast ratio between the left eye image and the right eye image.
Correcting the pixel value,
A pixel value of the left eye image corresponding pixel, a pixel value of the right eye image corresponding pixel, a pixel value of the left eye image corresponding pixel and the right eye according to a pixel value of the left eye image corresponding pixel and a pixel value of the right eye image corresponding pixel And correcting the pixel value based on one of average values of pixel values of an image corresponding pixel.
Correcting the pixel value,
When the pixel value of the left eye image corresponding pixel and the pixel value of the right eye image corresponding pixel are greater than or equal to 0 and smaller than a first reference value, the smaller value of the pixel value of the left eye image corresponding pixel and the pixel value of the right eye image corresponding pixel. And correcting at least one pixel value of the pixel value of the left eye image corresponding pixel and the pixel value of the right eye image corresponding pixel.
Correcting the pixel value,
When the pixel value of the left eye image corresponding pixel and the pixel value of the right eye image corresponding pixel are greater than or equal to the first reference value and smaller than the second reference value, the pixel value of the left eye image corresponding pixel and the pixel value of the right eye image corresponding pixel And correcting pixel values of the left eye image corresponding pixel and the right eye image corresponding pixel as an average value.
Correcting the pixel value,
When the pixel value of the left eye image corresponding pixel and the pixel value of the right eye image corresponding pixel are greater than or equal to the second reference value and less than or equal to 255, the pixel value of the left eye image corresponding pixel and the pixel value of the right eye image corresponding pixel. And correcting at least one pixel value of the pixel value of the pixel corresponding to the left eye image and the pixel value of the pixel corresponding to the right eye image by a large value.
When the histogram of the left eye image and the right eye image are extracted, and the histogram of the left eye image and the histogram of the right eye image are different, the pixel values of the left eye image corresponding pixel of the left eye image and the right eye image corresponding pixel of the right eye image are the same. A controller for correcting; And
And a display unit for outputting a left eye image and a right eye image in which the pixel values are corrected.
And the left eye image corresponding pixel and the right eye image corresponding pixel have the same coordinate values and different pixel values in the left eye image and the right eye image, respectively.
The control unit compares the histogram of the left eye image and the histogram of the right eye image, and uses the histogram of the left eye image and the histogram of the right eye image, respectively, in the left eye image and the right eye image, respectively, the pixel corresponding to the left eye image and the right eye image. An image display apparatus comprising finding an image corresponding pixel.
And the controller is further configured to correct the other one of the pixel values of the pixel value of the pixel corresponding to the left eye image and the pixel value of the pixel corresponding to the right eye image.
The controller may be configured to correct one of a pixel value of the pixel corresponding to the left eye image or a pixel value of the pixel corresponding to the right eye image based on an image having a higher gray level value among the left eye image and the right eye image. .
And the control unit corrects one of the pixel value of the pixel corresponding to the left eye image or the pixel value of the pixel corresponding to the right eye image based on an image having a higher contrast ratio among the left eye image and the right eye image.
The control unit may include a pixel value of the left eye image corresponding pixel, a pixel value of the right eye image corresponding pixel, and a pixel value of the left eye image corresponding pixel according to a pixel value of the left eye image corresponding pixel and a pixel value of the right eye image corresponding pixel. And correcting the pixel value based on one of an average value of pixel values of the pixel corresponding to the right eye image.
If the pixel value of the pixel corresponding to the left eye image corresponding pixel and the pixel value of the pixel corresponding to the right eye image is greater than or equal to 0 and smaller than a first reference value, the controller may include the pixel value of the pixel corresponding to the left eye image corresponding to the pixel value of the right eye image corresponding pixel. And correcting at least one pixel value of the pixel value of the pixel corresponding to the left eye image and the pixel value of the pixel corresponding to the right eye image by a smaller value.
The controller may be configured to adjust the pixel value of the left eye image corresponding pixel and the right eye image corresponding pixel when the pixel value of the left eye image corresponding pixel and the pixel value of the right eye image corresponding pixel are greater than or equal to the first reference value and smaller than a second reference value. And correcting pixel values of the left eye image corresponding pixel and the right eye image corresponding pixel using an average value of pixel values.
The controller may be configured to adjust the pixel value of the left eye image corresponding pixel and the right eye image corresponding pixel when the pixel value of the left eye image corresponding pixel and the pixel value of the right eye image corresponding pixel are greater than or equal to the second reference value and less than or equal to 255. And at least one pixel value of the pixel value of the pixel corresponding to the left eye image and the pixel value of the pixel corresponding to the right eye image with a larger value among the pixel values.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020100010548A KR20110090640A (en) | 2010-02-04 | 2010-02-04 | Image display device and operating method for the same |
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020100010548A KR20110090640A (en) | 2010-02-04 | 2010-02-04 | Image display device and operating method for the same |
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| KR20110090640A true KR20110090640A (en) | 2011-08-10 |
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| KR1020100010548A KR20110090640A (en) | 2010-02-04 | 2010-02-04 | Image display device and operating method for the same |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101581586B1 (en) | 2014-10-13 | 2016-01-11 | 이화여자대학교 산학협력단 | Compensation method for noise of depth image |
| US9253467B2 (en) | 2012-11-09 | 2016-02-02 | Electronics And Telecommunications Research Institute | Method and apparatus for correcting errors in multiple stream-based 3D images |
| KR101878184B1 (en) * | 2012-03-08 | 2018-07-13 | 엘지디스플레이 주식회사 | Method for detecting jagging area and jagging area detection device |
| KR101988551B1 (en) * | 2018-01-15 | 2019-06-12 | 충북대학교 산학협력단 | Efficient object detection and matching system and method using stereo vision depth estimation |
-
2010
- 2010-02-04 KR KR1020100010548A patent/KR20110090640A/en not_active Application Discontinuation
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101878184B1 (en) * | 2012-03-08 | 2018-07-13 | 엘지디스플레이 주식회사 | Method for detecting jagging area and jagging area detection device |
| US9253467B2 (en) | 2012-11-09 | 2016-02-02 | Electronics And Telecommunications Research Institute | Method and apparatus for correcting errors in multiple stream-based 3D images |
| KR101581586B1 (en) | 2014-10-13 | 2016-01-11 | 이화여자대학교 산학협력단 | Compensation method for noise of depth image |
| KR101988551B1 (en) * | 2018-01-15 | 2019-06-12 | 충북대학교 산학협력단 | Efficient object detection and matching system and method using stereo vision depth estimation |
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