WO2019045227A1 - 디스플레이장치 및 그 제어방법 - Google Patents
디스플레이장치 및 그 제어방법 Download PDFInfo
- Publication number
- WO2019045227A1 WO2019045227A1 PCT/KR2018/005691 KR2018005691W WO2019045227A1 WO 2019045227 A1 WO2019045227 A1 WO 2019045227A1 KR 2018005691 W KR2018005691 W KR 2018005691W WO 2019045227 A1 WO2019045227 A1 WO 2019045227A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pixel
- pixel value
- difference
- image
- decrease
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 59
- 238000012545 processing Methods 0.000 claims abstract description 105
- 230000007423 decrease Effects 0.000 claims abstract description 93
- 238000012937 correction Methods 0.000 claims description 37
- 230000003247 decreasing effect Effects 0.000 claims description 22
- 238000001914 filtration Methods 0.000 claims description 14
- 238000004590 computer program Methods 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 abstract description 3
- 239000013598 vector Substances 0.000 description 22
- 230000008569 process Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 11
- 238000004891 communication Methods 0.000 description 10
- 230000008859 change Effects 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 8
- 230000006870 function Effects 0.000 description 5
- 239000004973 liquid crystal related substance Substances 0.000 description 4
- 230000007704 transition Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/73—Deblurring; Sharpening
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/20—Image enhancement or restoration using local operators
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/20—Circuitry for controlling amplitude response
- H04N5/205—Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic
- H04N5/208—Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic for compensating for attenuation of high frequency components, e.g. crispening, aperture distortion correction
Definitions
- the present invention relates to a display device and a control method thereof, and more particularly, to a display device and a control method thereof for correcting an image so as to improve detail of an image.
- Image detail enhancement technology is a technology that makes the shape of objects in the image clear and sharp by using processing methods such as increasing the transition of the image signal or increasing the variation of the size. As the display becomes larger, the importance of image detail enhancement technology is increasing. This is because the necessity of sharpening the blurred image is increasing more and more in the process of enlarging the small image according to the large display.
- Unsharp filtering technology is a typical image detail enhancement technology.
- the implementation is simple and effective, and has been widely used for a long time.
- the operating principle of unsharp filtering is to extract the middle and high frequency components of an input signal using a low pass filter and amplify the mid / high frequency components of the input signal.
- unsharp filtering is performed by using a low-frequency filter 401 passing only a low-frequency signal to generate a low-frequency signal in which high frequency is lost in an input signal, that is, a low-
- the difference of the low frequency signal is found 402 and then added 403 to the input signal to obtain the final output signal.
- unsharp filtering amplifies the high frequency of the image.
- FIG. 5 shows the relationship between the input signal and the output signal in an example in which unsharp filtering is applied to the image. It can be seen that the output signal is temporarily smaller or larger than the input signal (hereinafter, referred to as "overshoot") 501, 502 before and after the transition of the middle part of the signal. That is, overshoot occurs when the detail of the image is improved by unsharp filtering.
- the overshoots 501 and 502 have a problem in that the overall image quality of the image is degraded. This is because the noise included in the overshoot portion is amplified together with the signal. In other words, there is a problem that noise is also amplified when the image detail is improved by using unsharp filtering. Therefore, it is very important to prevent generation and increase of noise in video detail enhancement technology.
- a display apparatus including: a signal receiver for receiving a video signal; A display unit for displaying an image based on the image signal; And calculating a degree of increase / decrease of a difference in pixel value between at least one first pixel and two or more second pixels of the image, and calculating a difference between the pixel value difference between the at least one first pixel and the at least one second pixel using the relatively small value of the pixel value difference, And a processing unit for correcting the pixel value of one pixel.
- the processing unit determines a pixel positioned in a direction in which the pixel value difference is decreased based on the degree of increase and decrease of the calculated pixel value difference and corrects the pixel value of the first pixel using the determined pixel .
- the processing unit may correct the value of the first pixel by changing the pixel value of the first pixel to the pixel value of the determined pixel.
- the detail of the image can be improved without generating or increasing the noise.
- the present invention can be implemented by a simple operation and logic, the details of the image can be improved practically and economically.
- the processing section may perform the correction for the first pixel whose difference in pixel value from the adjacent pixel is greater than a predetermined value and may not perform the correction for the first pixel whose difference in pixel value from the adjacent pixel is less than a predetermined value . According to this, the processing efficiency can be improved as the processing target area is reduced.
- the processing unit may correct the pixel value of the first pixel based on the degree of increase / decrease of the pixel value difference between two or more second pixel groups including the second pixel, respectively. According to this, the reliability of the image detail processing is improved from the viewpoint of the entire image.
- the processing unit may calculate the pixel value difference by calculating a pixel value difference within each second pixel group by varying the specific gravity according to the proximity to the first pixel. According to this, more various factors can be considered in determining the degree of increase and decrease and the direction of increase and decrease.
- the processing unit performs a first correction by setting the second pixel group to have a first size and sets the second pixel group to have a second size for the image subjected to the first correction, 2 calibration can be performed. According to this, the reliability of the image detail processing is improved from the viewpoint of the entire image while improving the image detail accurately.
- the processing unit may calculate the degree of increase / decrease after calculating the direction of increase / decrease of the pixel value difference. Also, the processing unit may calculate the increase / decrease direction based on a result of performing low-frequency filtering on the pixel value difference. This improves the reliability of the video detail processing technique.
- a method of controlling a display device comprising: receiving a video signal; Calculating a degree of increase / decrease of a pixel value difference between at least one first pixel and at least two second pixels of the image, and calculating a difference between the first and second pixels of the first image by using a relatively small value of the pixel value difference, Correcting a pixel value of a pixel; And displaying the corrected image.
- the correcting step comprises the steps of: determining a pixel located in a direction in which the pixel value difference is decreased based on the degree of increase / decrease of the calculated difference in pixel value, and calculating a pixel value of the first pixel using the determined pixel Can be corrected.
- the correcting step may correct the value of the first pixel by changing the pixel value of the first pixel to the pixel value of the determined pixel.
- the detail of the image can be improved without generating or increasing the noise.
- the present invention can be implemented by a simple operation and logic, the details of the image can be improved practically and economically.
- the correcting step comprises performing the correction on the first pixel whose difference in pixel value from adjacent pixels is greater than a predetermined value and not performing the correction on the first pixel whose difference in pixel value from the adjacent pixel is less than a predetermined value . According to this, the processing efficiency can be improved as the processing target area is reduced.
- the correcting step may correct the pixel value of the first pixel based on the degree of increase / decrease of the pixel value difference between two or more second pixel groups including the second pixel, respectively. According to this, the reliability of the image detail processing is improved from the viewpoint of the entire image.
- the pixel value difference may be calculated by varying the weight depending on the proximity to the first pixel. According to this, more various factors can be considered in determining the degree of increase and decrease and the direction of increase and decrease.
- the step of correcting comprises performing a first correction by setting the second pixel group to have a first size and setting the second pixel group to have a second size with respect to the image on which the first correction is performed To perform a second correction. According to this, the reliability of the image detail processing is improved from the viewpoint of the entire image while improving the image detail accurately.
- the correcting step may calculate the degree of increase / decrease after calculating the increasing / decreasing direction of the pixel value difference.
- the correcting step may calculate the increase / decrease direction based on a result of performing low-frequency filtering on the pixel value difference. This improves the reliability of the video detail processing technique.
- a computer program stored in a medium for executing a control method in combination with a display device.
- the computer program may be stored in a medium in the server and downloaded to the display device via a network.
- FIG. 1 illustrates a display device according to one embodiment of the present invention
- FIG. 2 is a diagram illustrating a configuration of a display device according to an embodiment of the present invention
- FIG. 3 is a diagram illustrating a control method of a display apparatus according to an embodiment of the present invention.
- FIG. 6 is a flowchart illustrating a process of a display apparatus according to an exemplary embodiment of the present invention.
- FIG. 7 is a view showing a processing result of a display device according to an embodiment of the present invention.
- FIG. 8 is a view illustrating another example of a display device processing process according to an embodiment of the present invention.
- FIG. 9 is a flowchart illustrating a process of a display apparatus according to another embodiment of the present invention.
- FIG. 10 is a flowchart illustrating a process of a display apparatus according to another embodiment of the present invention.
- FIG. 11 is a view showing an example of a filter according to another embodiment of the present invention.
- FIG. 12 is a flowchart showing a processing flow of a display apparatus according to another embodiment of the present invention.
- FIG. 13 is a view showing another example of a filter according to another embodiment of the present invention.
- FIG. 14 is a diagram illustrating a pixel value correction concept in a display device according to an embodiment of the present invention
- FIG. 15 is a diagram illustrating a processing procedure and a processing result of a display apparatus according to an embodiment of the present invention.
- 16 is a diagram showing the effect of correction processing of a display device according to an embodiment of the present invention.
- 17 is a view showing the effect of correction processing of a display device according to an embodiment of the present invention.
- FIG. 18 is a diagram illustrating a control method of a display apparatus according to another embodiment of the present invention.
- FIG. 19 is a diagram illustrating a control method of a display apparatus according to another embodiment of the present invention.
- FIG. 20 is a view showing a processing procedure of a display apparatus according to another embodiment of the present invention.
- " comprising, " " including, " " having ", and the like, Or < / RTI >
- 'module' or 'sub-module' performs at least one function or operation, and may be implemented in hardware or software, or a combination of hardware and software, And may be implemented as at least one processor.
- the display device 1 shows a display device according to an embodiment of the present invention.
- the display device 1 according to an embodiment of the present invention can be implemented, for example, as a TV.
- the display device 1 according to another embodiment of the present invention can be applied to a wearable device such as a smart phone, a tablet, a mobile phone, a smart watch, a head-mounted display, a computer, A digital billboard, a digital billboard, a large format display (LFD), a digital signage, a set-top box, a refrigerator, and the like.
- the display device 1 according to the embodiment of the present invention is not limited to this, and any device capable of outputting an image can be used.
- the display device 1 is a block diagram showing a configuration of a display device according to an embodiment of the present invention.
- the display device 1 according to an embodiment of the present invention includes a signal receiving unit 201, a processing unit 202, and a display unit 203.
- the display device 1 according to an embodiment of the present invention may further include a user command input unit 204.
- the configuration of the display device 1 shown in FIG. 2 is merely an example, and the display device according to an embodiment of the present invention may be implemented in other configurations. That is, the display device according to an embodiment of the present invention may be implemented by adding a configuration other than the configuration shown in FIG. 2, or by excluding some of the configurations shown in FIG.
- the signal receiving unit 201 receives a video signal.
- the signal receiving unit 201 may include a tuner for receiving a video signal in the form of a broadcast signal.
- the tuner can receive and receive a broadcast signal of any one of a plurality of channels selected by the user.
- the signal receiving unit 201 may receive a video signal from an external device such as a camera, a server, a USB storage device, a DVD, a computer, or the like.
- the signal receiving unit 201 may include a communication unit for communicating with an external device and receiving a video signal.
- the communication unit is implemented in various ways depending on the external device.
- the communication unit includes a connection unit for wired communication, and the connection unit transmits / receives signals / data according to standards such as HDMI (High Definition Multimedia Interface), HDMI-CFC (Consumer Electronics Control), USB, And includes at least one connector or terminal corresponding to each of these specifications.
- the communication unit can perform wired communication with a plurality of servers through a wired LAN (Local Area Network).
- the communication unit may be implemented by various other communication methods in addition to the connection unit including the connector or terminal for wired connection.
- it may include an RF circuit for transmitting / receiving an RF (Radio Frequency) signal to perform wireless communication with an external device, and may be a Wi-Fi, a Bluetooth, a Zigbee, USB, Near Field Communication (NFC), or the like.
- RF Radio Frequency
- the processing unit 202 performs image processing on a video signal received through the signal receiving unit 201 and outputs the video signal subjected to the video processing to the display unit 203, To be displayed.
- the processing unit 202 may further perform at least one image processing such as scaling for adjusting the resolution of the image.
- the processing unit 202 may be implemented as one or more hardware and / or software modules that perform the above-mentioned image processing, or a combination thereof.
- the display unit 203 displays an output image 206 obtained by the processing unit 202 performing image processing.
- the implementation of the display unit 203 is not limited.
- the display unit 203 includes a backlight unit for supplying light to the liquid crystal display panel and the liquid crystal display panel, and a panel driver for driving the liquid crystal display panel.
- the display unit 203 may be implemented as an OLED panel that is a self-luminous element without a backlight unit.
- the user command input unit 204 receives the user input and transmits the user input to the processing unit 202.
- the user command input unit 204 may be implemented in various forms according to the user input method.
- the user command input unit 204 may include a menu button installed outside the display device 1, a remote control signal receiving unit A touch-screen provided on the display unit 203 for receiving a touch input of a user, a camera for sensing a user's gesture input, and a microphone for recognizing voice input by the user.
- the user command input unit 204 may receive a user input instructing to perform image processing.
- the processing unit 202 can perform control for the operation of all the configurations of the display device 1.
- the processing unit 202 includes a control program (or an instruction) for enabling the control operation to be performed, a nonvolatile memory in which the control program is installed, a volatile memory in which at least a part of the installed control program is loaded, And a central processing unit (CPU).
- a control program can also be stored in other electronic apparatuses other than the display apparatus 1.
- the control program may include program (s) implemented in the form of at least one of a BIOS, a device driver, an operating system, firmware, a platform and an application program.
- the application program is installed or stored in the display device 1 at the time of manufacture of the display device 1, or receives data of an application program from the outside at the time of use, And can be installed in the display device 1.
- the data of the application program may be downloaded to the display device 1 from an external server such as an application market, but is not limited thereto.
- the processing unit 202 may be implemented as a device, a S / W module, a circuit, a chip, or the like.
- the processing unit 202 controls the signal receiving unit 201 to receive a video signal, for example.
- the processing unit 202 performs image processing on a video signal, and then controls the display unit 203 to display an output image.
- the display device 1 shown in FIG. 2 is embodied as a structure for performing image signal processing and control in one processing unit 202, but this is merely an example, and a display according to another embodiment of the present invention
- the apparatus 1 may be implemented with a configuration in which a control unit is additionally provided separately from the processing unit.
- FIG. 3 is a flowchart illustrating a method of controlling a display device according to an embodiment of the present invention.
- the processing unit 202 of the display device controls the signal receiving unit 201 to receive a video signal (S301). Thereafter, the processing unit 202 calculates the degree of increase / decrease of the pixel value difference between at least one first pixel and two or more second pixels of the image (S302).
- the pixel value means a constant value set corresponding to each pixel of the image.
- the pixel value may have a value between 0 and 1, or between 0 and 255.
- a value corresponding to each element according to a color scheme indicating the color image for example, depending on whether the color scheme is RGB, CMY, YCbCr, YIQ or HIS And in the case of RGB, values corresponding to Red, Green, and Blue, respectively).
- the degree of increase or decrease in the pixel value difference is a value indicating the degree of increase or decrease in the difference between the pixel values. For example, assuming that two or more second pixels adjacent to the first pixel are respectively a 2-1 pixel and a 2-2 pixel, the value of the first pixel is 20, the value of the 2-1 pixel is 10, If the value of -2 pixels is 50, then the pixel value difference between the second-first pixel and the first pixel is 10 and the pixel value difference between the first pixel and the second -2 pixel is 40, 40, and the degree of increase is 30 in this case.
- the increasing and decreasing direction of the pixel value difference means a corresponding direction when the pixel value difference increases or decreases corresponding to a certain direction, respectively.
- the pixel value difference increases through the second-first pixel - > the first pixel - > the second-second pixel, and in this case, the increase / decrease direction of the pixel value difference can be referred to as the left direction.
- the above is only an example, and it is also possible to correspond the above and other directions with respect to the increase or decrease of the pixel value difference.
- the processing unit 202 corrects the pixel value of the first pixel using the relatively small value of the pixel value difference obtained based on the calculation (S303).
- the correction of the pixel value means a process which results in the change of the pixel value.
- it may mean applying an arithmetic operation to the pixel value, such as adding, subtracting, or multiplying the pixel value by a certain value, or, in another example, replacing the pixel value with another pixel value.
- the meaning that the pixel value difference uses a relatively small value refers to a process in which the pixel value difference is based on a relatively small value. Therefore, it is possible to directly use a relatively small value of the pixel value difference, and indirectly use a relatively small value of the pixel value difference.
- An example of indirectly utilizing a relatively small value of the pixel value difference is that in the direction in which the pixel value difference is reduced with respect to the first pixel, that is, in the portion where the pixel value difference is relatively large, (Hereinafter also referred to as a reference pixel) in the direction toward the first pixel, and correcting the pixel value of the first pixel with reference to the reference pixel.
- the pixel value of the first pixel may be increased or decreased such that it approaches the pixel value of the reference pixel, But the present invention is not limited thereto.
- the processing unit 202 controls the display unit 203 to display the corrected image (S304).
- FIG. 6 is a graph showing a relationship between a degree of difference in pixel value difference between two or more second pixels (pixel 2, pixel 3) adjacent to a first pixel (pixel 1) .
- the case where the pixels of the input signal are located on the one-dimensional coordinate will be described as an example.
- the coordinates on which the pixels of the present invention are placed are not limited to the one-dimensional coordinates. The invention is applicable.
- a graph 610 is a graph showing an example of an input signal, and is a graph showing a relationship between pixel coordinates and pixel values when pixels of an input signal are located on a one-dimensional coordinate.
- the processing unit 202 of the display device It is judged that the difference between the pixel values between the pixel (1) and the pixel (3) is smaller than the pixel value difference between the pixel (1) and the pixel have. Therefore, the processing unit 202 of the display apparatus can calculate the direction of the increase or decrease in the pixel value difference in the pixel (1) in the direction (rightward direction) toward the pixel 3 (which is the direction in which the pixel value difference decreases).
- FIG. 7 shows a method of correcting a pixel value, and a method of changing a pixel value of the pixel by a value of a reference pixel.
- the method of correcting the pixel value of the pixel is not limited to changing the pixel value of the corresponding pixel to the pixel value of the reference pixel.
- a graph 710 is a graph showing a part of the graph 610 relating to the input signal of FIG. 6 (including a range of coordinates A to B to C), and a graph 720 is a first derivative graph of the input signal 710. Since the degree of increase / decrease of the pixel value difference in the pixel (1) has been calculated to be 20 and the right direction respectively, the processing unit 202 of the display device calculates the distance from the pixel 1 to the right by a distance corresponding to the degree of increase / (Pixel 4) 711, and changes the pixel value of the pixel (1) to the value (712) of the pixel (4). Accordingly, there is an effect (713) visually showing that the pixel? Moves to the position of the pixel?.
- the input signal 710 is changed as the output signal 714 by the correction. It can be seen from the graph 720 that the first derivative value for each pixel from the coordinates A to B gradually decreases, and the pixel value difference for each pixel from the coordinates A to B gradually decreases .
- the processing unit 202 of the display device calculates all the direction of increase / decrease of the pixel value difference for each pixel in the right direction.
- the processing unit 202 sets the pixel value of each pixel from the coordinates A to B to the pixel value of the reference pixel that is farther from the reference pixel ,
- the output signal becomes the same as 714, and the effect that the reference pixels are moved to the left occurs visually.
- the output signal 714 is compared with the input signal 710, the change of the output signal 714 in the same section A-B becomes more abrupt compared to the input signal 710, thereby visually improving the detail of the image.
- the fact that the input signal 710 is corrected by the processing unit 202 of the display device according to the embodiment of the present invention as the output signal 714 indicates that the pixels of the input image have moved in the direction from the low frequency region toward the high frequency region as a whole do.
- the image detail enhancement effect of the embodiment of the present invention is generated by pixel movement in the input image, overshoot that occurs when the conventional unsharp filtering technique for amplifying the high frequency region signal of the image is not generated in the present invention . Therefore, according to the present invention, detail of an image can be improved without generating or increasing noise. In addition, since the present invention can be implemented by a simple operation and logic, the details of the image can be improved practically and economically.
- the processing unit 202 of the display device performs the correction only for pixels having a difference in pixel value from adjacent pixels to a predetermined value or more and for pixels having a difference in pixel value from adjacent pixels to a predetermined value,
- the correction may not be performed. That is, the correction may be performed not only on the entire pixels of the input image but also on the pixels having a difference in pixel value from the adjacent pixels, that is, pixels in the high frequency region. According to this, the processing efficiency can be improved as the processing target area is reduced.
- FIG. 8 is a view showing another example of a process of a display device according to an embodiment of the present invention.
- FIG. 8 is a graph showing the relationship between the degree of change in the pixel value difference between two or more second pixels (pixel 6, pixel 7) adjacent to the first pixel (pixel 5) .
- the processing unit 202 of the display device can calculate the direction of the increase or decrease in the pixel value difference in the pixel 5 (in the direction toward the pixel 6) (the direction in which the pixel value difference decreases) (the left direction).
- the increase / decrease direction of the pixel value difference in the pixel 5 may not match the purpose of improving the detail of the image.
- the direction in which the left and pixel 6 are located with respect to the pixel 5 is the direction toward the high frequency region HIGH
- the direction in which the pixel 7 is located is the direction toward the low frequency region (LOW).
- the direction of the increase or decrease in the pixel value difference with respect to the pixel 5 must be the 'right direction' so that the pixel value of the pixel located in the corresponding direction is referred to, and as a result, the pixel shifts from right to left.
- the direction calculated by the processing unit 202 in the direction of the increase / decrease of the pixel value difference with respect to the pixel 5 is the 'left direction', which is opposite to the above, so that a problem may occur in which the result is opposite to the desired result.
- FIG. 9 is a diagram illustrating a process of a display apparatus according to another embodiment of the present invention.
- the embodiment in Fig. 9 does not calculate the degree of increase and decrease in the pixel value difference between the first pixel and two or more second pixels adjacent thereto, as in the above embodiment,
- the pixel value of the first pixel is corrected on the basis of the degree of increase / decrease of the pixel value difference between the 'group' and the increase / decrease direction. That is, with respect to the pixel 5, the pixel group P from the pixel 5 to the pixel 6 with respect to the pixel 5 is calculated instead of the degree of increase / decrease of the pixel value difference between the pixel 5 and the adjacent pixels 6 and 7, And the pixel group (Q) from the pixel (5) to the pixel (7), and corrects the pixel value of the first pixel based on the calculated increase / decrease direction.
- the sum of the pixel value differences for each pixel in each pixel group is obtained and then the sum of the pixel value differences .
- the sum of the pixel value differences for pixel group P i. E.
- the sum of the pixel value differences for each pixel in the pixel group P is calculated, for example, as the integral value of the pixel group P interval at the first derivative 920 for the input signal 910 But is not limited thereto.
- the sum of the pixel value differences for the pixel group Q can also be calculated in the same way.
- the processing unit 202 of the display device calculates the pixel group P
- the pixel value of the first pixel is corrected based on the degree of increase / decrease of the pixel value difference between at least one first pixel of the image and the pixel value difference between adjacent pixel groups as described above, It is possible to correct the pixel value of the first pixel based on the high frequency region and the low frequency region based on the high frequency region and the low frequency region without being influenced by the region judged to be relatively low frequency. Accordingly, the reliability of the image detail processing is improved from the viewpoint of the entire image.
- the processing unit 202 calculates the degree of increase / decrease of the pixel value difference (sum of pixel values) between adjacent pixel groups for each pixel . Since the calculated degree of increase / decrease and direction of increase / decrease can be expressed by a vector, the processing unit 202 can associate a vector that defines the magnitude and direction of increase / decrease with respect to each pixel as the magnitude and direction of the vector. Further, the vector corresponding to each pixel can be represented by a single graph as shown in a graph 1020. [ The magnitude of the graph value corresponding to each pixel in the graph 1020 indicates the degree of increase or decrease in the magnitude of the vector corresponding to the pixel, and the sign (+ or -) of the graph value indicates the direction of the increase or decrease.
- a process of correcting pixel values of each pixel can be illustrated.
- the vector is zero in size. Therefore, in correcting the pixel corresponding to the point O, the reference pixel to be referred to is itself, so that the pixel value corresponding to the point O is not changed.
- the processing unit 202 refers to the value of the reference pixel located on the left side of the pixels on the left side of the S point The pixel value is corrected.
- FIG. 11 is a view showing an example of a filter according to another embodiment of the present invention
- FIG. 12 is a view showing a processing flow of a display device according to another embodiment of the present invention.
- the processing unit 202 may derive a value indicating a pixel value difference in each pixel with respect to a constant signal region including the first pixel.
- a value indicating the difference of pixel values in each pixel for example, a derivative can be obtained and a pixel value change amount (Gradient) in each pixel can be obtained (1201).
- the processing unit 202 applies a filter such as the filter 1101 shown in FIG. 11 to a signal area in the predetermined signal area including the first pixel, for example, within a distance of 5 pixels from the first pixel (1202).
- the application of the upper filter 1101 means that the sum of the pixel value differences of the pixel group U within 5 pixels to the left from the first pixel is smaller than the sum of the pixel value differences of the pixels of the pixel group V within 5 pixels to the right from the first pixel (Vector) 1203 corresponding to the degree of increase / decrease of the pixel value difference between the two pixel groups and the increasing / decreasing direction can be derived.
- the processing unit 202 may change the pixel value of each pixel with the pixel value of the reference pixel indicated by the vector corresponding to the pixel. In this process, the intensity of the effect may be adjusted by multiplying the vector by a weight (1205).
- the filter in the above embodiment is not limited to the filter in Fig. Any filter that can derive the degree of increase / decrease of the pixel value difference between two pixel groups and the result corresponding to the increasing / decreasing direction according to the application of the filter is possible. An embodiment to which another filter is applied will be described with reference to FIG.
- the processing unit 202 applies the 1301 filter, the degree of increase or decrease in the pixel value difference between the two pixel groups can be obtained as compared with the 1101 filter, but the result that the increase / decrease direction is reversed is obtained.
- the pixel is moved in the direction from the low-frequency region toward the high-frequency region as a result, the detail of the image is improved, the image moves in the direction from the high-frequency region toward the low- Effect can occur. That is, according to the present invention, the present invention can be applied to an effect of blurring an image.
- a pixel closer to the first pixel located at the center thereof is considered as a larger weight in calculating the degree of increase / decrease of the pixel value difference. That is, when the 1302 filter is applied, the processing unit 202 may calculate the pixel value difference by calculating the pixel value difference within the pixel group with different weights according to the proximity to the first pixel.
- 1303 filter is an example of a filter used for calculating the pixel value difference by varying the specific gravity according to the proximity to the first pixel and is considered as a larger weight in calculating the pixel value difference Lt; / RTI > According to this, more various factors can be considered in determining the degree of increase and decrease and the direction of increase and decrease.
- the pixels of the ideal input signal are located on the one-dimensional coordinates.
- the coordinates on which the pixels of the present invention are placed are not limited to the one-dimensional coordinates.
- the present invention is applicable even when the pixels are located in two-dimensional coordinates or more.
- FIG. 14 is a diagram illustrating a concept of pixel value correction in a display device according to an embodiment of the present invention when the pixels are located in two-dimensional coordinates.
- the processing unit 202 of the display device according to an embodiment of the present invention applies one of the above-described embodiments with respect to the x-axis, and one of the above- Can be applied.
- the processing unit 202 may perform the embodiments in parallel for each axis or may be performed in a manner that is performed in series, that is, for one axis and then for the other axis. In either case, the processing unit 202 can determine the reference pixel using a vector corresponding to the sum of the vectors generated by applying the embodiment to each axis.
- the processing unit 202 may first derive a vector 1401 that points to a reference pixel in the x-axis direction by applying one of the above embodiments to the x-axis , Then one of these embodiments may be applied to the y-axis to derive a vector 1402 that points to the reference pixel in the y-axis direction. The processing unit 202 may then derive a vector corresponding to the sum of the two vectors 1401 and 1402 as a vector indicating a reference pixel 1420 with respect to 1410 pixels. If so, the processing unit 202 may correct the pixel value of 1410 pixels by referring to the reference pixel 1420. [ If the method of changing the pixel value of the current pixel to the pixel value of the reference pixel is used as a method of correcting with reference to the reference pixel, this indicates that the reference pixel 1420 moves to the position of 1410 pixels.
- FIG. 15 is a diagram showing in more detail the processing procedure and processing result of the display device according to the embodiment of the present invention when the pixels are located in two-dimensional coordinates.
- the processing unit 202 of the display device When the image 1501 is inputted, the processing unit 202 of the display device according to the embodiment of the present invention derives a pixel value difference or a variation amount (Gradient) for each pixel of the input image (S1502). Thereafter, the processing unit 202 can generate a vector corresponding to each pixel according to the degree of increase / decrease of the pixel value difference and the direction of the increase / decrease with respect to each pixel (1503).
- the output image 1504 can be derived by changing the pixel value of each pixel with the value of the reference pixel indicated by the upper vector for each pixel. When the output image 1504 is compared with the input image 1501, the border of the dark color becomes thinner and clearer, and the detail of the image is improved.
- the effect of applying the present invention over the whole image can be confirmed by comparing with the existing technology.
- the images 1603 and 1703 to which the present invention is applied compare to the images 1602 and 1702 to which the conventional unsharp masking technique is applied to the input images 1601 and 1701, And there is almost no generation and increase of noise.
- the correction of the pixel value is performed many times It is also possible.
- the processing unit 202 of the display device receives a video signal (S1801), and then calculates a pixel value difference between two or more pixel groups adjacent to the first pixel
- the first pixel group may be set to have a first size and the first correction may be performed in step S1802.
- the second correction is performed by setting the pixel group to have the second size again with respect to the image subjected to the first correction, as described above (S1803), and the final corrected image can be displayed (S1804).
- the correction is performed by setting the size of the pixel group to a small value, the correction can be finely performed. However, the correction may be performed in a direction where the detail is locally lowered. On the other hand, if the correction is performed by setting the size of the pixel group to be relatively large, the correction effect in the fine portion can be relatively small, but the possibility of the correction in the direction in which the detail is lowered from the viewpoint of the entire image can be reduced. Therefore, by combining these two, it is possible to mitigate each of the disadvantages when only one of them is applied.
- the degree of increase / decrease of the pixel value difference is obtained at the same time, or the degree of increase / decrease is calculated first, and the increase / decrease direction is calculated later.
- the processing unit 202 of the display device receives a video signal (S1901), and transmits the video signal to at least one first pixel of the video, In correcting the pixel value of the first pixel based on the degree of increase / decrease of the pixel value difference between two or more second pixels, the degree of increase / decrease of the pixel value difference is first calculated (S1902) The degree of increase or decrease in the value difference can be calculated (S1903). Thereafter, the pixel value of the first pixel is corrected using the relatively small value of the pixel value difference obtained based on the calculation (S1904), and the corrected image can be displayed (S1904).
- the degree of increase / decrease of the pixel value difference and the increasing / decreasing direction can be calculated using the pixel group in order to calculate the pixel value difference.
- the above problem can be solved without using the pixel group as described above.
- the above problem can be solved by calculating the increasing / decreasing direction based on the result of performing the low-frequency filtering on the pixel value difference. For example, if a low pass filter is applied to a derivative 2002 representing a pixel value difference corresponding to each pixel of the input signal 2001, the graph of 2003 can be derived. As compared with the graph 2002, the graph 2003 shows a change in the pixel value difference from the viewpoint of the entire image, and thus it is possible to solve the problem that can be caused by locally determining the degree of increase / decrease and the direction of increase / decrease.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Controls And Circuits For Display Device (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Image Processing (AREA)
- Picture Signal Circuits (AREA)
- Transforming Electric Information Into Light Information (AREA)
Abstract
Description
Claims (15)
- 디스플레이장치에 있어서,영상신호를 수신하는 신호수신부;영상을 표시하는 디스플레이부; 및상기 영상의 적어도 하나의 제1픽셀과 둘 이상의 제2픽셀 간의 픽셀값 차이의 증감정도와 증감방향을 계산하고, 상기 계산에 기초하여 얻어지는 상기 픽셀값 차이가 상대적으로 작은 값을 이용하여 상기 제1픽셀의 픽셀값을 보정하는 처리부를 포함하는 디스플레이장치.
- 제1항에 있어서,상기 처리부는, 상기 계산된 픽셀값 차이의 증감정도와 증감방향에 기초하여 상기 픽셀값 차이가 감소하는 방향에 위치한 픽셀을 결정하고, 상기 결정된 픽셀을 이용하여 상기 제1픽셀의 픽셀값을 보정하는 디스플레이장치.
- 제2항에 있어서,상기 처리부는, 상기 제1픽셀의 픽셀값을 상기 결정된 픽셀의 픽셀값으로 변경하여 상기 제1픽셀의 값을 보정하는 디스플레이장치.
- 제1항에 있어서,상기 처리부는, 인접 픽셀과의 픽셀값 차이가 소정 이상인 상기 제1픽셀에 대하여 상기 보정을 수행하고, 인접 픽셀과의 픽셀값 차이가 소정 미만인 상기 제1픽셀에 대하여는 상기 보정을 수행하지 않는 디스플레이장치.
- 제1항에 있어서,상기 처리부는, 각각 상기 제2픽셀을 포함한 둘 이상의 제2픽셀그룹 간의 픽셀값 차이의 증감정도와 증감방향에 기초하여 상기 제1픽셀의 픽셀값을 보정하는 디스플레이장치.
- 제5항에 있어서,상기 처리부는, 상기 각 제2픽셀그룹 내의 픽셀값 차이를 계산함에 있어서, 상기 제1픽셀과의 근접도에 따라 비중을 달리하여 상기 픽셀값 차이를 계산하는 디스플레이장치.
- 제5항에 있어서,상기 처리부는, 상기 제2픽셀그룹이 제1크기를 가지도록 설정하여 제1보정을 수행하고, 상기 제1보정이 수행된 영상에 대하여 상기 제2픽셀그룹이 제2크기를 가지도록 설정하여 제2보정을 수행하는 디스플레이장치.
- 제1항에 있어서,상기 처리부는, 상기 픽셀값 차이의 증감방향을 계산한 후 증감정도를 계산하는 디스플레이장치.
- 제8항에 있어서,상기 처리부는, 상기 픽셀값 차이에 대하여 저주파필터링을 수행한 결과에 기초하여 상기 증감방향을 계산하는 디스플레이장치.
- 디스플레이장치의 제어방법에 있어서,영상신호를 수신하는 단계;상기 영상의 적어도 하나의 제1픽셀과 둘 이상의 제2픽셀 간의 픽셀값 차이의 증감정도와 증감방향을 계산하고, 상기 계산에 기초하여 얻어지는 상기 픽셀값 차이가 상대적으로 작은 값을 이용하여 상기 제1픽셀의 픽셀값을 보정하는 단계; 및상기 보정된 영상을 표시하는 단계를 포함하는 디스플레이장치의 제어방법.
- 제10항에 있어서,상기 보정하는 단계는, 상기 계산된 픽셀값 차이의 증감정도와 증감방향에 기초하여 상기 픽셀값 차이가 감소하는 방향에 위치한 픽셀을 결정하고, 상기 결정된 픽셀을 이용하여 상기 제1픽셀의 픽셀값을 보정하는 디스플레이장치의 제어방법.
- 제11항에 있어서,상기 보정하는 단계는, 상기 제1픽셀의 픽셀값을 상기 결정된 픽셀의 픽셀값으로 변경하여 상기 제1픽셀의 값을 보정하는 디스플레이장치의 제어방법.
- 제10항에 있어서,상기 보정하는 단계는, 인접 픽셀과의 픽셀값 차이가 소정 이상인 상기 제1픽셀에 대하여 상기 보정을 수행하고, 인접 픽셀과의 픽셀값 차이가 소정 미만인 상기 제1픽셀에 대하여는 상기 보정을 수행하지 않는 디스플레이장치의 제어방법.
- 제10항에 있어서,상기 보정하는 단계는, 각각 상기 제2픽셀을 포함한 둘 이상의 제2픽셀그룹 간의 픽셀값 차이의 증감정도와 증감방향에 기초하여 상기 제1픽셀의 픽셀값을 보정하는 디스플레이장치의 제어방법.
- 디스플레이장치와 결합되어 제10항의 제어방법을 실행시키기 위하여 매체에 저장된 컴퓨터프로그램.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16/640,611 US10846830B2 (en) | 2017-08-30 | 2018-05-18 | Display apparatus and control method thereof |
AU2018323652A AU2018323652B2 (en) | 2017-08-30 | 2018-05-18 | Display device and control method thereof |
EP18849773.9A EP3654630B1 (en) | 2017-08-30 | 2018-05-18 | Display device and control method thereof |
CN201880003801.XA CN109792476B (zh) | 2017-08-30 | 2018-05-18 | 显示装置及其控制方法 |
JP2019511603A JP6657476B2 (ja) | 2017-08-30 | 2018-05-18 | ディスプレイ装置及びその制御方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2017-0110239 | 2017-08-30 | ||
KR1020170110239A KR102366232B1 (ko) | 2017-08-30 | 2017-08-30 | 디스플레이장치 및 그 제어방법 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2019045227A1 true WO2019045227A1 (ko) | 2019-03-07 |
Family
ID=65527555
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2018/005691 WO2019045227A1 (ko) | 2017-08-30 | 2018-05-18 | 디스플레이장치 및 그 제어방법 |
Country Status (7)
Country | Link |
---|---|
US (1) | US10846830B2 (ko) |
EP (1) | EP3654630B1 (ko) |
JP (1) | JP6657476B2 (ko) |
KR (1) | KR102366232B1 (ko) |
CN (1) | CN109792476B (ko) |
AU (1) | AU2018323652B2 (ko) |
WO (1) | WO2019045227A1 (ko) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20040062297A (ko) * | 2003-01-02 | 2004-07-07 | 삼성전자주식회사 | 적응형 윤곽 상관 보간에 의한 디스플레이 장치의 순차주사 방법 |
KR20040085891A (ko) * | 2003-04-02 | 2004-10-08 | 삼성전자주식회사 | 방향성을 예측하고 다항식 필터로 보간을 수행하여스케일링 해상도를 높이는 보간기, 이를 구비한 스케일링장치, 및 그 방법 |
KR20070035800A (ko) * | 2005-09-28 | 2007-04-02 | 엘지전자 주식회사 | 인접 화소의 기울기를 이용한 영상 잡음 제거 장치 및 방법 |
KR101481551B1 (ko) * | 2008-06-03 | 2015-01-13 | 엘지전자 주식회사 | 영상 노이즈 제거 장치 및 방법 |
KR20150090455A (ko) * | 2014-01-29 | 2015-08-06 | 강원대학교산학협력단 | 영상 확대 보간 방법 |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4105378B2 (ja) * | 2000-10-10 | 2008-06-25 | 富士フイルム株式会社 | 画像変換装置及び画像変換方法 |
US6965705B1 (en) * | 2001-08-09 | 2005-11-15 | Ndsp, Inc. | Method and system for dynamic angle interpolation in image processing |
US7130483B2 (en) | 2001-12-12 | 2006-10-31 | Samsung Electronics Co., Ltd. | Method for enhancing a digital image while suppressing undershoots and overshoots |
KR100506086B1 (ko) * | 2002-12-26 | 2005-08-03 | 삼성전자주식회사 | 영상의 재현 품질 향상 장치 및 그 방법 |
US7139036B2 (en) | 2003-01-31 | 2006-11-21 | Samsung Electronics Co., Ltd. | Method and apparatus for image detail enhancement using filter bank |
US7110044B2 (en) | 2003-03-27 | 2006-09-19 | Samsung Electronics Co., Ltd. | Image detail enhancement system |
US7751641B2 (en) * | 2005-04-28 | 2010-07-06 | Imagenomic, Llc | Method and system for digital image enhancement |
KR100782812B1 (ko) * | 2005-06-15 | 2007-12-06 | 삼성전자주식회사 | 에지 적응적 컬러 보간 방법 및 장치 |
JP4479600B2 (ja) * | 2005-06-24 | 2010-06-09 | ソニー株式会社 | 画像処理装置および方法、並びにプログラム |
US7982798B2 (en) * | 2005-09-08 | 2011-07-19 | Silicon Image, Inc. | Edge detection |
JP4600775B2 (ja) * | 2006-04-03 | 2010-12-15 | 富士ゼロックス株式会社 | 画像処理装置及びプログラム |
US7957606B2 (en) * | 2006-07-24 | 2011-06-07 | Broadcom Corporation | System and method for edge sharpening |
KR100736356B1 (ko) * | 2006-08-25 | 2007-07-06 | 엠텍비젼 주식회사 | 이미지의 에지 검출 장치 및 그 방법, 선명도 강조 장치 및그 방법, 이를 수행하는 프로그램이 기록된 기록 매체 |
KR100901354B1 (ko) * | 2007-05-31 | 2009-06-05 | 주식회사 코아로직 | 영상의 에지 보정장치 및 그 방법 |
US8559746B2 (en) * | 2008-09-04 | 2013-10-15 | Silicon Image, Inc. | System, method, and apparatus for smoothing of edges in images to remove irregularities |
JP4727720B2 (ja) * | 2008-12-31 | 2011-07-20 | 株式会社モルフォ | 画像処理方法および画像処理装置 |
JP5423697B2 (ja) * | 2011-02-09 | 2014-02-19 | 株式会社ニコン | 画像処理装置、撮像装置、画像処理プログラム、及び画像処理方法 |
US8891906B2 (en) * | 2012-07-05 | 2014-11-18 | Intel Corporation | Pixel-adaptive interpolation algorithm for image upscaling |
KR101744761B1 (ko) * | 2012-11-30 | 2017-06-09 | 한화테크윈 주식회사 | 영상처리장치 및 방법 |
JP6116291B2 (ja) * | 2013-02-27 | 2017-04-19 | オリンパス株式会社 | 画像処理装置、画像処理方法及び画像処理プログラム |
US9639771B2 (en) * | 2013-09-06 | 2017-05-02 | Sharp Kabushiki Kaisha | Image processing device |
JP6378496B2 (ja) * | 2014-02-26 | 2018-08-22 | キヤノン株式会社 | 画像処理装置、制御方法及び記録媒体 |
JP6291940B2 (ja) * | 2014-03-20 | 2018-03-14 | 株式会社ソシオネクスト | 欠陥画素補正装置、撮像装置、及び欠陥画素補正方法 |
CN106412542A (zh) * | 2016-02-03 | 2017-02-15 | 周彩章 | 一种图像处理方法及系统 |
-
2017
- 2017-08-30 KR KR1020170110239A patent/KR102366232B1/ko active IP Right Grant
-
2018
- 2018-05-18 CN CN201880003801.XA patent/CN109792476B/zh active Active
- 2018-05-18 AU AU2018323652A patent/AU2018323652B2/en active Active
- 2018-05-18 JP JP2019511603A patent/JP6657476B2/ja active Active
- 2018-05-18 US US16/640,611 patent/US10846830B2/en active Active
- 2018-05-18 WO PCT/KR2018/005691 patent/WO2019045227A1/ko unknown
- 2018-05-18 EP EP18849773.9A patent/EP3654630B1/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20040062297A (ko) * | 2003-01-02 | 2004-07-07 | 삼성전자주식회사 | 적응형 윤곽 상관 보간에 의한 디스플레이 장치의 순차주사 방법 |
KR20040085891A (ko) * | 2003-04-02 | 2004-10-08 | 삼성전자주식회사 | 방향성을 예측하고 다항식 필터로 보간을 수행하여스케일링 해상도를 높이는 보간기, 이를 구비한 스케일링장치, 및 그 방법 |
KR20070035800A (ko) * | 2005-09-28 | 2007-04-02 | 엘지전자 주식회사 | 인접 화소의 기울기를 이용한 영상 잡음 제거 장치 및 방법 |
KR101481551B1 (ko) * | 2008-06-03 | 2015-01-13 | 엘지전자 주식회사 | 영상 노이즈 제거 장치 및 방법 |
KR20150090455A (ko) * | 2014-01-29 | 2015-08-06 | 강원대학교산학협력단 | 영상 확대 보간 방법 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3654630A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP3654630A1 (en) | 2020-05-20 |
KR102366232B1 (ko) | 2022-02-23 |
JP2020503702A (ja) | 2020-01-30 |
CN109792476A (zh) | 2019-05-21 |
KR20190023877A (ko) | 2019-03-08 |
US20200175653A1 (en) | 2020-06-04 |
EP3654630B1 (en) | 2023-06-28 |
AU2018323652B2 (en) | 2020-03-12 |
JP6657476B2 (ja) | 2020-03-04 |
CN109792476B (zh) | 2021-07-13 |
EP3654630C0 (en) | 2023-06-28 |
AU2018323652A1 (en) | 2020-02-27 |
US10846830B2 (en) | 2020-11-24 |
EP3654630A4 (en) | 2020-08-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2017052102A1 (ko) | 전자 장치, 그의 디스플레이 패널 장치 보정 방법 및 보정 시스템 | |
WO2018084516A1 (ko) | 전지 장치, 디스플레이 장치 및 그의 제어 방법 | |
EP3040967A1 (en) | Color adjustment method and device | |
WO2018080052A1 (en) | Electronic device and method for controlling the same | |
US8289396B2 (en) | Wireless data transmitting method | |
CN104021774A (zh) | 一种图像处理的方法及装置 | |
US10816802B2 (en) | Transparent display apparatus, method for controlling the same, and computer-readable recording medium | |
EP3732670B1 (en) | Mobile terminal adjusting image quality of display, and method of operating the same | |
CN104021746A (zh) | 一种图像检测的方法及装置 | |
WO2019066443A1 (ko) | 디스플레이 장치 및 그 제어방법 | |
WO2019088476A1 (en) | Image processing apparatus, method for processing image and computer-readable recording medium | |
KR102421443B1 (ko) | 표시 장치 및 이의 구동 방법 | |
US10939083B2 (en) | Electronic apparatus and control method thereof | |
CN105528982A (zh) | Rgb信号到rgby信号的图像转换系统及方法 | |
WO2019045227A1 (ko) | 디스플레이장치 및 그 제어방법 | |
US20130335388A1 (en) | Display apparatus and control method | |
US20190057639A1 (en) | Display device and driving method thereof | |
CN108881758B (zh) | 电子设备及其处理图像的方法 | |
WO2019147028A1 (ko) | 영상 처리 장치, 영상 처리 방법 및 컴퓨터 판독가능 기록 매체 | |
WO2018048093A1 (ko) | 디스플레이장치 및 그 제어방법 | |
WO2019013443A1 (ko) | 디스플레이장치 및 그 제어방법 | |
WO2023048465A1 (en) | Skin tone protection using a dual-core geometric skin tone model built in device-independent space | |
WO2024014687A1 (ko) | 전자 장치 및 그 ui 제공 방법 | |
WO2024128518A1 (ko) | 디스플레이 장치 및 그 구동 방법 | |
KR100922723B1 (ko) | 디스플레이 소자에 있어서 명도 및 채도 개선 장치 및 이를수행하기 위한 방법 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ENP | Entry into the national phase |
Ref document number: 2019511603 Country of ref document: JP Kind code of ref document: A |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 18849773 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2018849773 Country of ref document: EP Effective date: 20200212 |
|
ENP | Entry into the national phase |
Ref document number: 2018323652 Country of ref document: AU Date of ref document: 20180518 Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |