WO2011013745A1 - 階調調整装置、画像表示装置、テレビ受像機、プログラム、及び、プログラムが記録されたコンピュータ読み取り可能な記憶媒体 - Google Patents
階調調整装置、画像表示装置、テレビ受像機、プログラム、及び、プログラムが記録されたコンピュータ読み取り可能な記憶媒体 Download PDFInfo
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- gradation
- luminance
- gradation correction
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Definitions
- the present invention relates to a gradation adjustment device, an image display device, a television receiver, a program, and a computer-readable program on which the program is recorded, provided in an image display device that changes the image quality of an input image and displays the image with the changed image quality It relates to a possible storage medium.
- an image display device capable of changing the image quality setting according to the type of image or the viewing environment has been put into practical use.
- the image display device displays an image adjustment menu, accepts settings of image quality parameter values such as brightness, black level, contrast, color density, hue, and image quality, and uses the received image quality parameter values to The image quality is adjusted and displayed.
- image quality parameter values such as brightness, black level, contrast, color density, hue, and image quality
- Patent Documents 1 to 3 disclose an apparatus having such an adjustment function.
- contrast adjustment which is one of the adjustment functions, is usually performed by correcting a gamma curve representing a so-called gamma characteristic.
- a method of using a luminance distribution based on a histogram distribution of an input image For example, when the luminance distribution is distributed in the intermediate luminance region, the gamma curve is corrected from L100 to L101 as shown in FIG. 14, for example.
- the luminance distribution is distributed in the intermediate luminance region as shown in the curve of FIG. 14, generally, the high gradation portion of gamma is raised and the low gradation portion is lowered. Adjustment (so-called picture making) is performed.
- the degree of correction amount (the size indicated by the arrow in FIG. 14) set for each luminance level when correcting this gamma curve is called a gain.
- the originally smooth gradation portion is raised or lowered, resulting in a gradation step, which causes image display.
- a gradation step which causes image display.
- the apparatus it may appear that there is a pseudo contour in an intermediate gradation part such as skin color.
- the present invention has been made in view of the above problems, and an object of the present invention is to provide a gradation adjusting device, an image display device, and a television receiver for realizing an image display device that maintains a higher quality as an original image.
- An object of the present invention is to provide a computer, a program, and a computer-readable storage medium on which the program is recorded.
- a gradation adjusting device is a gradation adjusting device for correcting the gradation of an image displayed on an image display device, and in order to solve the above-described problem, Regarding two adjacent pixels having luminance included in the intermediate luminance region in the luminance distribution, (1) The luminance difference between the two pixels is larger after the gradation correction is performed than before the gradation correction is performed on the input image data in accordance with a predetermined gradation correction amount, and (2) For the two pixels in which the luminance difference after the gradation correction is performed is equal to or less than a predetermined threshold value, After the gradation correction is performed, a correction mechanism for correcting the luminance of the two pixels so as to reduce the luminance difference is provided.
- the gradation adjusting apparatus performs a gradation correction (correction of a gamma curve representing a gamma characteristic) according to a predetermined gradation correction amount (gain), so that an originally smooth gradation level is obtained.
- a gradation correction correction of a gamma curve representing a gamma characteristic
- gain predetermined gradation correction amount
- a gradation adjusting device is a gradation adjusting device for correcting the gradation of an image displayed on an image display device, and in order to solve the above problems, Gradation correction means for performing gradation correction on input image data according to a predetermined gradation correction amount; Intermediate luminance region determining means for determining whether or not the luminance of two adjacent pixels is included in the intermediate luminance region in the luminance distribution; The two adjacent pixels determined to have the luminance included in the intermediate luminance region by the intermediate luminance region determining means, the gradation correction than before the gradation correction is performed according to a predetermined gradation correction amount.
- a luminance difference determination means for determining whether or not the luminance difference between the two pixels becomes larger after
- a luminance difference threshold determination means for determining whether or not the luminance difference determined by the luminance difference determination means is equal to or less than a predetermined threshold;
- Correction means for correcting the luminance of the two adjacent pixels determined to be equal to or less than the predetermined threshold by the luminance difference threshold determination means so as to reduce the luminance difference. It is a feature.
- the gradation adjusting apparatus corrects the gamma curve representing the gamma characteristic, thereby generating a gradation that is caused by raising or lowering the originally smooth gradation portion.
- the step can be made small, that is, the step can be made smooth.
- the gradation adjusting device is Regarding two adjacent pixels having luminance included in the intermediate luminance region in the luminance distribution, (1) The luminance difference between the two pixels is larger after the gradation correction is performed than before the gradation correction is performed on the input image data in accordance with a predetermined gradation correction amount, and (2) For the two pixels in which the luminance difference after the gradation correction is performed is equal to or less than a predetermined threshold value, It is characterized in that a correction mechanism for correcting the luminance of the two pixels so as to reduce the luminance difference after the gradation correction is performed is provided.
- FIG. 1 It is the block diagram which showed the structure of the television receiver (image display apparatus) which concerns on one Embodiment of this invention. It is the figure which showed the structure of the video processing part provided in the television receiver shown in FIG. It is the figure which showed the change of the gradation by the gradation correction performed in a general image display apparatus. It is the figure which showed the gradation level
- the image display device in the present embodiment can be used as an image display device such as a television receiver or a mobile phone having a function of displaying an image (video).
- the present invention is particularly characterized by a mechanism for changing (correcting) input image data.
- a television receiver which is an example of an image display device, will be described as an overall configuration, and then the details of a correction mechanism for input image data will be described.
- FIG. 1 is a block diagram showing a configuration of an image display apparatus according to an embodiment of the present invention.
- the television receiver (image display device) according to the present embodiment reduces a gradation step generated by correcting two adjacent pixels having luminance included in the intermediate luminance region with a predetermined gain amount in the luminance distribution. Thus, it is possible to perform correction so as to obtain a smooth gradation expression from a low gradation portion to a high gradation portion.
- 10 indicates the entire television receiver having the liquid crystal display device 22 having a screen size of 16: 9 (1920 ⁇ 1010 dots), for example.
- the television receiver 10 includes a CPU 6 and a memory 7 connected to the bus 8, and the operation of the television receiver 10 is controlled by various control programs stored in the CPU 6 and the memory 7.
- the television receiver shown in FIG. 1 is controlled by a computer system including a CPU 6, and a program for operating the television receiver by the computer system is stored in the memory 7.
- the memory 7 is usually constituted by a RAM, but may include a ROM in part. Further, a rewritable flash memory or the like may be included.
- the memory 7 stores an OS for operating the CPU, various control software, and the like, data relating to program information such as EPG data received via broadcast waves, and an OSD image necessary for OSD display. Data etc. are stored.
- the memory 7 has a work area that functions as a work memory necessary for various control operations.
- the television receiver 10 is provided with an analog tuner section 12 in addition to the digital tuner section 14, and can receive analog broadcasts.
- the external input unit 31 can be connected to various external devices 30 such as a solid-state memory such as an HDD and an SD card, and a disk device such as a BD (Blu-ray disc), DVD, and CD.
- a BD / DVD / CD recording / reproducing unit 32 is also built in the main body of the apparatus 10.
- an IP broadcast tuner unit 23 is provided, and IP broadcast reception is also possible.
- the television receiver 10 includes an AV switch unit 13, a digital demodulation unit 15, a separation unit (DMUX) 16, a video decode / capture unit 17, a video selector unit 18, a video processing unit 19, an addition circuit 20, and a display control unit. 21, liquid crystal display device 22, EPG / OSD / reservation processing unit 24, audio decoding unit 25, audio selector unit 26, audio output conversion unit 27, speaker 28, channel selection unit 33, communication control unit 34, and remote control light receiving unit 35 is doing.
- the television receiver 10 is further provided with an OPC (light) sensor 38 for detecting ambient brightness.
- OPC light
- the analog tuner unit 12 selects an analog television broadcast signal received via the antenna 11 for receiving an analog broadcast, and selects a channel according to a channel selection instruction from the channel selection unit 33.
- the received signal from the analog tuner unit 12 is separated into an audio signal and a video signal in the AV switch unit 13, the video signal is input to the video selector unit 18, and the audio signal is input to the audio selector unit 26.
- the digital tuner unit 14 selects a digital television broadcast signal received via the digital broadcast receiving antenna 40, and selects a channel to be received according to a channel selection instruction from the channel selection unit 33.
- the received signal from the digital tuner unit 14 is demodulated by the digital demodulation unit 15 and sent to the separation unit (DMUX) 16.
- the IP broadcast tuner unit 23 selects an IP broadcast received via a communication control unit 34 connected to a telephone line / LAN or the like, and receives a specific IP received in response to a channel selection instruction from the channel selection unit 33. The broadcast is selected and the output is sent to the separation unit (DMUX) 16.
- DMUX separation unit
- the separation unit (DMUX) 16 separates the multiplexed video data and audio data input from the digital demodulation unit 15 or the IP broadcast tuner unit 23, sends the video data to the video decoding / capture unit 17, and the audio data Is sent to the audio decoding unit 25. Further, the separation unit (DMUX) 16 extracts data such as EPG data included in the broadcast signal and sends it to the EPG / OSD / reservation processing unit 24. The broadcast wave signal extracted by the separation unit (DMUX) 16 is recorded in the memory 7 by writing control by the CPU 6 as necessary.
- the video decode / capture unit 17 decodes the video data separated by the separation unit (DMUX) 16 and captures video information included in the video data as a still image.
- the video signal decoded by the video decoding / capture unit 17 is sent to the video selector unit 18.
- the video signal from the analog tuner unit 12 is input to the video selector unit 18, and the video signal from the external input unit 31 is also input.
- the video selector unit 18 selects and outputs one video signal from these input video signals according to the control signal from the CPU 6, and sends it to the video processing unit 19.
- the video processing unit 19 performs various types of video processing on the input video signal. In the present invention, since the video processing unit 19 has a feature, details of the video processing unit 19 will be described later. For example, video processing such as noise reduction processing, sharpness adjustment, contrast adjustment, and the like is performed, and the video data is converted to an optimal video signal for the liquid crystal display device 22.
- the display control unit 21 includes a drive circuit for displaying the received video data on the liquid crystal display device 22, and an electronic program table (from the EPG / OSD / reservation processing unit 24) added by the addition circuit 20 ( EPG (Electronic Program Guide) data or OSD (On Screen Display) data is sent to the liquid crystal display device 22 in addition to the video data from the video processing unit 19.
- EPG Electronic Program Guide
- OSD On Screen Display
- the audio decoding unit 25 decodes the audio data separated by the separation unit (DMUX) 16.
- the audio decoding unit 25 sends the decoded audio signal to the audio selector unit 26.
- the audio selector unit 26 receives the audio signal from the AV switch unit 13, the audio signal from the external input unit 31, and the audio signal from the audio decoding unit 25, and is selected by the video selector unit 18 under the control of the CPU 6. An audio signal corresponding to the video signal is selected, and the audio signal is sent to the speaker 28 via the audio output conversion unit 27.
- the audio output conversion unit 27 converts the received audio signal into a signal optimal for reproduction on the speaker 28 and supplies the converted signal to the speaker 28.
- the remote control light receiving unit 35 receives an optical signal from a remote controller 36 (hereinafter referred to as a remote controller 36) and receives a control signal from the remote controller 36. Instructions from the viewer, such as transition to scaling display described later, selection and determination of various buttons at the time of scaling display, are performed via the remote controller 36.
- the EPG / OSD / reservation processing unit 24 creates an electronic program guide based on EPG data periodically updated and stored, and draws OSD data stored in the memory 7 in advance.
- the OSD data is data for drawing various information such as a setting menu screen, a volume cage, a current time, a channel selection, and the like stored in advance in the memory 7, for example. Further, the EPG / OSD / reservation processing unit 24 performs program reservation processing using the electronic program guide.
- the communication control unit 34 performs control so as to establish communication via a network such as a telephone line, a LAN, and the Internet.
- the television receiver is particularly described as an example.
- the television is received by a portable device capable of viewing the television, for example, a mobile phone, a car navigation system, a portable game terminal, or the like.
- a portable device capable of viewing the television
- a mobile phone for example, a mobile phone, a car navigation system, a portable game terminal, or the like.
- the gradation correction of the present invention can be applied also in this case.
- FIG. 2 shows a configuration example of the video processing unit 19 shown in FIG.
- the video processing unit 19 is a gradation adjustment device for correcting the gradation of an image displayed on the television receiver 10, and relates to two adjacent pixels having luminance included in the intermediate luminance region in the luminance distribution.
- the luminance difference between the two pixels is larger after the gradation correction is performed than before the gradation correction is performed on the input image data in accordance with a predetermined gradation correction amount, and
- For the two pixels whose luminance difference after the gradation correction is performed is equal to or less than a predetermined threshold, after the gradation correction is performed, the two differences are reduced.
- a correction mechanism for correcting the luminance of the pixel is provided.
- the video processing unit 19 includes a gradation correction unit 2 (gradation correction unit), an intermediate luminance region determination unit 3 (intermediate luminance region determination unit), and a luminance difference determination unit.
- 4a luminance difference determination means
- luminance difference threshold determination section 4b luminance difference threshold determination means
- gradation adjustment section 5 correction means
- the gradation correction unit 2 receives input image data 1 such as an input video signal, detects an amount (gain) of correcting the gradation of luminance according to the value of the input video signal, and detects the detected gradation correction. Tone correction is performed based on the amount.
- the intermediate luminance region determination unit 3 receives the gradation-corrected image data obtained from the gradation correction unit 2, and whether or not the luminance of the adjacent two pixels is included in the intermediate luminance region in the luminance distribution. Determine.
- the intermediate luminance region in the luminance distribution means luminance having an input gradation in a range from 100 gradations to 130 gradations, and if converted into output gradations by gamma as shown in FIG. , Luminance in a range from 100 to 169 gradations.
- the two adjacent pixels indicate two pixels arranged along the scanning line or two pixels arranged perpendicular to the scanning line.
- the luminance difference determination unit 4a is configured to receive the input image data 1 and the image data after gradation correction.
- the luminance difference determination unit 4a obtains a luminance difference between two adjacent pixels in the input image data 1 (that is, in a state where gradation correction is not performed), and image data after gradation correction (that is, gradation correction is performed). In this state, the luminance difference between two adjacent pixels is obtained and whether the luminance difference of the image data after gradation correction is larger than the luminance difference of the input image data 1 out of the two luminance differences. Determine. If the luminance difference is determined to be large, the luminance difference determination unit 4a sends a difference value between the luminance difference of the image data after gradation correction and the luminance difference of the input image data 1 to the luminance difference threshold determination unit 4b.
- the luminance difference threshold determination unit 4b determines whether the difference value is equal to or less than a predetermined threshold value.
- the predetermined threshold value is set based on an amount (gain) for correcting the luminance gradation in accordance with the value of the input video signal, and is a value determined in conjunction with the gain.
- the luminance difference threshold value determination unit 4 b sends a signal to the gradation adjustment unit 5.
- the tone adjustment unit 5 When the tone adjustment unit 5 receives a signal from the luminance difference threshold determination unit 4b, the tone adjustment unit 5 acquires the tone-corrected image data generated by the tone correction unit 2.
- a gradation correction method for a general image display apparatus will be described with reference to FIGS.
- a general image display device an image is analyzed, and a gamma curve shown in the upper part of FIG. 3 is created, and a high gradation part is raised or a low gradation part is submerged as shown in the lower part of FIG. Is done.
- the original smooth gradation part shown in the upper part of FIG. 4 is lifted, and as shown in the lower part of FIG. End up. That is, the gradation-corrected image data obtained from the gradation correction unit 2 is a gradation expression in a state as shown in the lower side of FIG.
- the intermediate luminance region determination unit 3, the luminance difference determination unit 4a, the luminance difference threshold determination unit 4b, and the gradation adjustment unit 5 provide a threshold for the luminance difference between adjacent pixels. 5 is recognized as gradation, and the recognized portion is blurred between pixels, thereby leveling the step shown in the upper side of FIG. 5 (same as the step shown in the lower side of FIG. 4) and lower side of FIG. As shown in FIG.
- the gradation adjustment unit 5 blurs the pixels that are recognized as gradation. Specifically, it can be easily blurred by using a blur filter as shown in the following embodiment.
- the image data processed by the gradation adjusting unit 5 is sent to the adder circuit 20 as output image data.
- the determination in the intermediate luminance region determination unit 3 is performed. It is not limited.
- the determination in the intermediate luminance region determination unit 3 may be performed before the gradation correction in the gradation correction unit 2, or the determination in the intermediate luminance region determination unit 3 is a luminance difference threshold determination. It may be performed after the determination in the unit 4b, or may be performed in parallel with the processing in any unit. That is, the processing in each unit is not limited to the configuration shown in FIG. 2, and two adjacent pixels are included in the intermediate luminance region in the luminance distribution during the processing in the gradation adjusting unit 5.
- the two pixels after the gradation correction is performed rather than before the gradation correction is performed on the input image data in accordance with a predetermined gradation correction amount. It is only necessary to be able to determine whether or not the difference in luminance is satisfied and whether the luminance difference after the gradation correction is equal to or less than a predetermined threshold is satisfied. .
- Example ⁇ As a method for changing gamma for picture making, when the amount of increase (gain) of the high gradation part of the input signal is determined by a graph, as shown in FIG. If the gain is increased, the gamma curve has a shape as shown in FIG.
- FIG. 8 a 4 ⁇ 4 pixel group shown in FIG. 8 will be described as an example.
- the numerical values in FIG. 8 and the input luminance values input to each pixel group are shown.
- applying gain by applying the gain table of FIG. 7 (1) results in the right side of FIG. 8, and attention is paid to the portion surrounded by a thick frame.
- FIG. 9 it can be seen that the difference in luminance between adjacent pixels increases the gain compared to x before. This amplified difference becomes a gradation step and may appear as a pseudo contour on the display.
- an input gradation threshold value and a difference threshold value are provided to correct a gradation portion to be corrected and a portion that was originally smooth.
- a maximum value (limit) may be provided separately from the difference threshold so that correction can be applied without determining the upper limit of the gradation as the threshold.
- the input gradation threshold value is converted into the output gradation threshold value by multiplying the lifting amount (gain) by the gradation determined in FIG.
- Flags are added to the pixels to be corrected based on the output gradation threshold values (100 to 169 gradations) thus obtained (FIG. 11).
- the flag may be set to 1 for a pixel to be corrected and 0 for a pixel not to be corrected.
- a blur filter 5a is applied to smooth the gradation (FIG. 12).
- the blur filter 5a is also set to 0.
- a filter corresponding to three horizontal pixels is used, but the same filter may be used for the vertical, and further, a horizontal and vertical 3 ⁇ 3 filter may be used.
- the processing is advanced horizontally by one pixel as shown from (1) to (2) in FIG. 12, but when the target itself is flag 0, the blur filter You don't have to hang yourself.
- the portion where the gradation step is 7 (difference is 7) on the left side of FIG. 9 becomes 5 as shown in (2) of FIG.
- the adjustment step can be relaxed.
- the difference is obtained by applying the blurring filter 5a as shown in FIG. It is possible to smoothly relieve the gradation portion in which is opened.
- the television receiver (image display apparatus) has (1) predetermined input image data with respect to two adjacent pixels having luminance included in the intermediate luminance region in the luminance distribution.
- the luminance difference between the two pixels is larger after the gradation correction is performed than before the gradation correction is performed according to the gradation correction amount of (2), and (2) the gradation correction is performed.
- a correction mechanism that corrects the luminance of the two pixels so that the luminance difference is reduced after the gradation correction is performed on the two pixels whose luminance difference is equal to or less than a predetermined threshold. ing.
- the smooth gradation part is originally raised or lowered by performing gradation correction (correction of the gamma curve representing the gamma characteristic) according to a predetermined gradation correction amount (gain).
- gradation correction correction of the gamma curve representing the gamma characteristic
- gain predetermined gradation correction amount
- the video processing unit 19 included in the television receiver 10 may be configured by hardware logic. Alternatively, it may be realized by software using a CPU (Central Processing Unit) as follows.
- CPU Central Processing Unit
- the television receiver 10 includes a CPU that executes instructions of a program that realizes each function, a ROM (Read Only Memory) that stores the program, a RAM (Random Access Memory) that expands the program into an executable format, and And a storage device (recording medium) such as a memory for storing the program and various data.
- a predetermined recording medium such as a memory for storing the program and various data.
- This recording medium only needs to record the program code (execution format program, intermediate code program, source program) of the program of the television receiver 10 which is software that realizes the above-described functions so that it can be read by a computer.
- This recording medium is supplied to the television receiver 10.
- the television receiver 10 or CPU or MPU as a computer may read and execute the program code recorded on the supplied recording medium.
- the recording medium for supplying the program code to the television receiver 10 is not limited to a specific structure or type. That is, the recording medium includes, for example, a tape system such as a magnetic tape and a cassette tape, a magnetic disk such as a floppy (registered trademark) disk / hard disk, and an optical disk such as a CD-ROM / MO / MD / DVD / CD-R. System, a card system such as an IC card (including a memory card) / optical card, or a semiconductor memory system such as a mask ROM / EPROM / EEPROM / flash ROM.
- a tape system such as a magnetic tape and a cassette tape
- a magnetic disk such as a floppy (registered trademark) disk / hard disk
- an optical disk such as a CD-ROM / MO / MD / DVD / CD-R.
- a card system such as an IC card (including a memory card) / optical card, or a semiconductor memory system such as
- the object of the present invention can be achieved.
- the program code is supplied to the television receiver 10 via the communication network.
- the communication network is not limited to a specific type or form as long as it can supply program codes to the television receiver 10.
- the Internet intranet, extranet, LAN, ISDN, VAN, CATV communication network, virtual private network, telephone line network, mobile communication network, satellite communication network, etc. may be used.
- the transmission medium constituting the communication network may be any medium that can transmit the program code, and is not limited to a specific configuration or type.
- a specific configuration or type for example, even wired such as IEEE 1394, USB (Universal Serial Bus), power line carrier, cable TV line, telephone line, ADSL (Asymmetric Digital Subscriber Line) line, infrared such as IrDA or remote control, Bluetooth (registered trademark), 802.11
- radio such as radio, HDR, mobile phone network, satellite line, terrestrial digital network.
- the present invention can also be realized in the form of a computer data signal embedded in a carrier wave in which the program code is embodied by electronic transmission.
- the gradation adjustment device is a gradation adjustment device for correcting the gradation of an image displayed on the image display device, and in order to solve the above-described problem, Regarding two adjacent pixels having luminance included in the intermediate luminance region in the luminance distribution, (1) The luminance difference between the two pixels is larger after the gradation correction is performed than before the gradation correction is performed on the input image data in accordance with a predetermined gradation correction amount, and (2) For the two pixels in which the luminance difference after the gradation correction is performed is equal to or less than a predetermined threshold value, After the gradation correction is performed, a correction mechanism for correcting the luminance of the two pixels so as to reduce the luminance difference is provided.
- the gradation adjusting apparatus performs a gradation correction (correction of a gamma curve representing a gamma characteristic) according to a predetermined gradation correction amount (gain), so that an originally smooth gradation level is obtained.
- a gradation correction correction of a gamma curve representing a gamma characteristic
- gain predetermined gradation correction amount
- a gradation adjusting device is a gradation adjusting device for correcting the gradation of an image displayed on an image display device, and in order to solve the above problems, Gradation correction means for performing gradation correction on input image data according to a predetermined gradation correction amount; Intermediate luminance region determining means for determining whether or not the luminance of two adjacent pixels is included in the intermediate luminance region in the luminance distribution; The two adjacent pixels determined to have the luminance included in the intermediate luminance region by the intermediate luminance region determining means, the gradation correction than before the gradation correction is performed according to a predetermined gradation correction amount.
- a luminance difference determination means for determining whether or not the luminance difference between the two pixels becomes larger after
- a luminance difference threshold determination means for determining whether or not the luminance difference determined by the luminance difference determination means is equal to or less than a predetermined threshold;
- Correction means for correcting the luminance of the two adjacent pixels determined to be equal to or less than the predetermined threshold by the luminance difference threshold determination means so as to reduce the luminance difference. It is a feature.
- the gradation adjusting apparatus corrects the gamma curve representing the gamma characteristic, thereby generating a gradation that is caused by raising or lowering the originally smooth gradation portion.
- the step can be made small, that is, the step can be made smooth.
- the gradation adjusting device includes: It is preferable to use a blur filter to correct the luminance of the two pixels so as to reduce the luminance difference.
- the gradation adjusting device is a level that is generated by performing gradation correction (correction of a gamma curve representing a gamma characteristic) according to a predetermined gradation correction amount (gain).
- the step of the tone can be easily smoothed.
- a gradation adjustment method is a gradation adjustment method for correcting the gradation of an image displayed on an image display device.
- the luminance difference between the two pixels is larger after the gradation correction is performed than before the gradation correction is performed on the input image data in accordance with a predetermined gradation correction amount, and (2) For the two pixels in which the luminance difference after the gradation correction is performed is equal to or less than a predetermined threshold value, After the gradation correction is performed, the luminance of the two pixels is corrected so as to reduce the luminance difference.
- the gradation adjustment method performs gradation correction (correction of a gamma curve representing a gamma characteristic) according to a predetermined gradation correction amount (gain), so that an originally smooth level is obtained.
- gradation correction correction of a gamma curve representing a gamma characteristic
- gain predetermined gradation correction amount
- the gradation adjustment method according to the present invention to the image display device, it is possible to eliminate the problem that the intermediate gradation portion such as the skin color appears to have a pseudo contour, and the original image is more It is possible to provide an image display device that realizes image display with high quality.
- the present invention also includes an image display device or a television receiver provided with the gradation adjusting device having the above-described configuration.
- the gradation adjusting device By providing the gradation adjusting device, it is possible to provide an image display device or a television receiver that realizes image display with higher quality as the original image.
- the invention of the present application is a program for operating a computer as each means of the above display device, and a computer-readable storage medium in which the program is recorded. Yes.
- the liquid or thermosetting member locally formed on the substrate can be heated and dried to be used as a local heating device for forming a film.
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Abstract
Description
輝度分布において中間輝度領域に含まれる輝度を有した隣り合う2つの画素に関して、
(1)入力画像データに対して所定の階調補正量に応じて階調補正がおこなわれる前よりも、階調補正がおこなわれた後のほうが該2つの画素の輝度差が大きく、且つ、
(2)該階調補正がおこなわれた後の該輝度差が、所定の閾値以下である該2つの画素について、
該階調補正がおこなわれた後に、輝度差が小さくなるように該2つの画素の輝度を補正する補正機構を備えていることを特徴としている。
入力画像データに対して所定の階調補正量に応じて階調補正をおこなう階調補正手段と、
隣り合う2つの画素の輝度が輝度分布において中間輝度領域に含まれるか否かを判定する中間輝度領域判定手段と、
上記中間輝度領域判定手段によって上記中間輝度領域に含まれる輝度を有すると判定された隣り合う2つの画素に関して、所定の階調補正量に応じて階調補正がおこなわれる前よりも、階調補正がおこなわれた後のほうが、該2つの画素の輝度差が大きくなるか否かを判定する輝度差判定手段と、
上記輝度差判定手段によって輝度差が大きくなったと判定された輝度差が、所定の閾値以下であるか否か判定する輝度差閾値判定手段と、
上記輝度差閾値判定手段により所定の閾値以下であると判定された該隣り合う2つの画素について、輝度差を小さくするように該2つの画素の輝度を補正する補正手段とを備えていることを特徴としている。
輝度分布において中間輝度領域に含まれる輝度を有した隣り合う2つの画素に関して、
(1)入力画像データに対して所定の階調補正量に応じて階調補正がおこなわれる前よりも、階調補正がおこなわれた後のほうが該2つの画素の輝度差が大きく、且つ、
(2)該階調補正がおこなわれた後の該輝度差が、所定の閾値以下である該2つの画素について、
該階調補正がおこなわれた後に、輝度差を小さくするように該2つの画素の輝度を補正する補正機構を備えていることを特徴としている。
図1は、本発明の一実施形態に係る画像表示装置の構成を示したブロック図である。本実施形態におけるテレビ受像機(画像表示装置)は、輝度分布において中間輝度領域に含まれる輝度を有した隣り合う2つの画素を所定のゲイン量によって補正することによって生じる階調の段差を小さくして、低階調部分から高階調部分まで滑らかな階調表現となるように補正することを可能にしている。
図2は、図1に示した映像処理部19の一構成例を示している。映像処理部19は、テレビ受像機10に表示する画像の階調を補正するための階調調整装置であって、輝度分布において中間輝度領域に含まれる輝度を有した隣り合う2つの画素に関して、(1)入力画像データに対して所定の階調補正量に応じて階調補正がおこなわれる前よりも、階調補正がおこなわれた後のほうが該2つの画素の輝度差が大きく、且つ、(2)該階調補正がおこなわれた後の該輝度差が、所定の閾値以下である該2つの画素について、該階調補正がおこなわれた後に、輝度差が小さくなるように該2つの画素の輝度を補正する補正機構を備えている。
絵作り用にガンマを変更する方法として、入力信号の高階調部分の持ち上げ量(ゲイン)をグラフによって決定する場合、図7(1)のように、100階調目から140階調目まで線形にゲインが上がっているとすると、ガンマ曲線は図7(2)のような形になる。
<条件>
差分閾値:8以下
入力階調閾値:100階調~130階調。
以上のように、本実施形態に係るテレビ受像機(画像表示装置)は、輝度分布において中間輝度領域に含まれる輝度を有した隣り合う2つの画素に関して、(1)入力画像データに対して所定の階調補正量に応じて階調補正がおこなわれる前よりも、階調補正がおこなわれた後のほうが該2つの画素の輝度差が大きく、且つ、(2)該階調補正がおこなわれた後の該輝度差が、所定の閾値以下である該2つの画素について、該階調補正がおこなわれた後に、輝度差を小さくするように該2つの画素の輝度を補正する補正機構を備えている。これにより、所定の階調補正量(ゲイン)に応じて階調補正(ガンマ特性を表すガンマ曲線の補正)をおこなうことによって元々滑らかな階調部分が持ち上げられたり、下げられたりすることにより生じてしまう階調の段差を、小さく、すなわち段差を滑らかなものにすることができ、肌色などの中間階調部分に擬似輪郭があるように見えてしまうといった不具合を解消し、本来の画像としてのより品位を保った画像表示を実現した画像表示装置を提供することができる。
最後に、テレビ受像機10に含まれている映像処理部19は、ハードウェアロジックによって構成すればよい。または、次のように、CPU(Central Processing Unit)を用いてソフトウェアによって実現してもよい。
輝度分布において中間輝度領域に含まれる輝度を有した隣り合う2つの画素に関して、
(1)入力画像データに対して所定の階調補正量に応じて階調補正がおこなわれる前よりも、階調補正がおこなわれた後のほうが該2つの画素の輝度差が大きく、且つ、
(2)該階調補正がおこなわれた後の該輝度差が、所定の閾値以下である該2つの画素について、
該階調補正がおこなわれた後に、輝度差が小さくなるように該2つの画素の輝度を補正する補正機構を備えていることを特徴としている。
入力画像データに対して所定の階調補正量に応じて階調補正をおこなう階調補正手段と、
隣り合う2つの画素の輝度が輝度分布において中間輝度領域に含まれるか否かを判定する中間輝度領域判定手段と、
上記中間輝度領域判定手段によって上記中間輝度領域に含まれる輝度を有すると判定された隣り合う2つの画素に関して、所定の階調補正量に応じて階調補正がおこなわれる前よりも、階調補正がおこなわれた後のほうが、該2つの画素の輝度差が大きくなるか否かを判定する輝度差判定手段と、
上記輝度差判定手段によって輝度差が大きくなったと判定された輝度差が、所定の閾値以下であるか否か判定する輝度差閾値判定手段と、
上記輝度差閾値判定手段により所定の閾値以下であると判定された該隣り合う2つの画素について、輝度差を小さくするように該2つの画素の輝度を補正する補正手段とを備えていることを特徴としている。
ぼかしフィルタを用いて、輝度差を小さくするように該2つの画素の輝度を補正するように構成されていることが好ましい。
輝度分布において中間輝度領域に含まれる輝度を有した隣り合う2つの画素に関して、
(1)入力画像データに対して所定の階調補正量に応じて階調補正がおこなわれる前よりも、階調補正がおこなわれた後のほうが該2つの画素の輝度差が大きく、且つ、
(2)該階調補正がおこなわれた後の該輝度差が、所定の閾値以下である該2つの画素について、
該階調補正がおこなわれた後に、輝度差を小さくするように該2つの画素の輝度を補正することを特徴としている。
2 階調補正部(階調補正手段)
3 中間輝度領域判定部(中間輝度領域判定手段)
4a 輝度差判定部(輝度差判定手段)
4b 輝度差閾値判定部(輝度差閾値判定手段)
5 階調調整部(補正手段)
5a ボカシフィルタ
6 CPU
7 メモリ
8 バス
10 テレビ受像機(画像表示装置)
11 アンテナ
12 アナログチューナー部
13 AVスイッチ部
14 デジタルチューナー部
15 デジタル復調部
16 分離部
17 ビデオデコード/キャプチャ部
18 ビデオセレクタ部
19 映像処理部(階調調整装置)
20 加算回路
21 表示制御部
22 液晶表示装置
23 IP放送チューナー部
24 EPG/OSD/予約処理部
25 オーディオデコード部
26 オーディオセレクタ部
27 音声出力変換部
28 スピーカ
30 外部機器
31 外部入力部
32 記録/再生部
33 選局部
34 通信制御部
35 リモコン受光部
36 リモートコントローラ
36 リモコン
38 OPCセンサ
40 デジタル放送受信用アンテナ
Claims (8)
- 画像表示装置に表示する画像の階調を補正するための階調調整装置であって、
輝度分布において中間輝度領域に含まれる輝度を有した隣り合う2つの画素に関して、
(1)入力画像データに対して所定の階調補正量に応じて階調補正がおこなわれる前よりも、階調補正がおこなわれた後のほうが該2つの画素の輝度差が大きく、且つ、
(2)該階調補正がおこなわれた後の該輝度差が、所定の閾値以下である該2つの画素について、
該階調補正がおこなわれた後に、輝度差が小さくなるように該2つの画素の輝度を補正する補正機構を備えていることを特徴とする階調調整装置。 - 画像表示装置に表示する画像の階調を補正するための階調調整装置であって、
入力画像データに対して所定の階調補正量に応じて階調補正をおこなう階調補正手段と、
隣り合う2つの画素の輝度が輝度分布において中間輝度領域に含まれるか否かを判定する中間輝度領域判定手段と、
上記中間輝度領域判定手段によって上記中間輝度領域に含まれる輝度を有すると判定された隣り合う2つの画素に関して、所定の階調補正量に応じて階調補正がおこなわれる前よりも、階調補正がおこなわれた後のほうが、該2つの画素の輝度差が大きくなるか否かを判定する輝度差判定手段と、
上記輝度差判定手段によって輝度差が大きくなったと判定された輝度差が、所定の閾値以下であるか否か判定する輝度差閾値判定手段と、
上記輝度差閾値判定手段により所定の閾値以下であると判定された該隣り合う2つの画素について、輝度差を小さくするように該2つの画素の輝度を補正する補正手段とを備えていることを特徴とする階調調整装置。 - ぼかしフィルタを用いて、輝度差を小さくするように該2つの画素の輝度を補正するように構成されていることを特徴とする請求項1または2に記載の階調調整装置。
- 画像表示装置に表示する画像の階調を補正するための階調調整方法であって、
輝度分布において中間輝度領域に含まれる輝度を有した隣り合う2つの画素に関して、
(1)入力画像データに対して所定の階調補正量に応じて階調補正がおこなわれる前よりも、階調補正がおこなわれた後のほうが該2つの画素の輝度差が大きく、且つ、
(2)該階調補正がおこなわれた後の該輝度差が、所定の閾値以下である該2つの画素について、
該階調補正がおこなわれた後に、輝度差を小さくするように該2つの画素の輝度を補正することを特徴とする階調調整方法。 - 請求項1から3までの何れか1項に記載の階調調整装置を備えた画像表示装置。
- 請求項1から3までの何れか1項に記載の階調調整装置を備えたテレビ受像機。
- 請求項2に記載の階調調整装置の各手段としてコンピュータを機能させるためのプログラム。
- 請求項7に記載のプログラムを記録したコンピュータ読み取り可能な記憶媒体。
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US13/387,640 US20120127371A1 (en) | 2009-07-31 | 2010-07-29 | Gradation adjustment device, image displaying device, television receiver, program, and computer-readable storage medium having program recorded therein |
JP2011524826A JP5502868B2 (ja) | 2009-07-31 | 2010-07-29 | 階調調整装置、画像表示装置、テレビ受像機、プログラム、及び、プログラムが記録されたコンピュータ読み取り可能な記憶媒体 |
RU2012106583/07A RU2012106583A (ru) | 2009-07-31 | 2010-07-29 | Устройство регулирования градации, устройство отображения изображений, телевизионный приемник, программа и считываемый компьютером носитель данных, имеющий сохраненную программу |
EP10804491.8A EP2461566A4 (en) | 2009-07-31 | 2010-07-29 | GRADING DEVICE, IMAGE DISPLAY, TELEVISION RECEIVER, PROGRAM, AND COMPUTER READABLE STORAGE MEDIUM WITH SAVED PROGRAM |
CN201080039351.3A CN102484675B (zh) | 2009-07-31 | 2010-07-29 | 灰度调整装置、图像显示装置、以及电视接收机 |
MX2012001233A MX2012001233A (es) | 2009-07-31 | 2010-07-29 | Dispositivo de ajuste de graduacion, dispositivo de visualizacion de imagen, receptor de television, programa y medio de almacenamiento legible en computadora que tiene programa grabado en el mismo. |
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JP5810628B2 (ja) * | 2011-05-25 | 2015-11-11 | 富士ゼロックス株式会社 | 画像処理装置及び画像処理プログラム |
JP5514344B2 (ja) * | 2012-05-15 | 2014-06-04 | シャープ株式会社 | 映像処理装置、映像処理方法、テレビジョン受像機、プログラム、及び記録媒体 |
US20130321497A1 (en) * | 2012-06-05 | 2013-12-05 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Method of Signal Compensation, Transformation Circuit in Liquid Crystal Panel, and Liquid Crystal Display Device |
US8958658B1 (en) * | 2013-09-10 | 2015-02-17 | Apple Inc. | Image tone adjustment using local tone curve computation |
NO3167225T3 (ja) | 2014-07-08 | 2018-03-31 | ||
US9691140B2 (en) * | 2014-10-31 | 2017-06-27 | Intel Corporation | Global matching of multiple images |
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JP6428391B2 (ja) * | 2015-03-10 | 2018-11-28 | 株式会社デンソー | 撮像装置 |
WO2017098689A1 (ja) | 2015-12-09 | 2017-06-15 | パナソニック株式会社 | 半導体発光装置 |
JP2017139678A (ja) * | 2016-02-05 | 2017-08-10 | Necプラットフォームズ株式会社 | 画像データ変換装置、画像データ変換方法、画像データ変換用プログラム、pos端末装置、及びサーバ |
JP6797716B2 (ja) * | 2017-02-28 | 2020-12-09 | キヤノン株式会社 | 画像処理装置および画像処理方法 |
US11354789B2 (en) | 2018-09-03 | 2022-06-07 | Canon Kabushiki Kaisha | Image processing apparatus and control method thereof |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1084481A (ja) * | 1996-06-28 | 1998-03-31 | Dainippon Screen Mfg Co Ltd | 画像の階調補間方法及び装置、並びに、その処理を実行するためのプログラムを記録した記録媒体 |
JPH11288242A (ja) | 1998-04-06 | 1999-10-19 | Toshiba Electronic Engineering Corp | γ曲線調整装置、その方法及びそれを用いた平面表示装置 |
JP2002281346A (ja) * | 2001-03-15 | 2002-09-27 | Matsushita Electric Ind Co Ltd | 階調補正装置 |
JP2004032427A (ja) * | 2002-06-26 | 2004-01-29 | Sharp Corp | 画像処理方法、画像処理装置及びそれを備えた画像形成装置、撮像装置、並びにコンピュータプログラム、記録媒体 |
JP2004318461A (ja) * | 2003-04-16 | 2004-11-11 | Seiko Epson Corp | トーンジャンプを目立たなくする画像処理 |
JP2006033469A (ja) * | 2004-07-16 | 2006-02-02 | Hitachi Ltd | 階調補正回路及びこれを用いたテレビジョン受像機 |
WO2006025486A1 (ja) * | 2004-09-01 | 2006-03-09 | Nec Corporation | 画像補正処理システム及び画像補正処理方法 |
JP2006101363A (ja) | 2004-09-30 | 2006-04-13 | Matsushita Electric Ind Co Ltd | 映像信号処理装置 |
WO2007099755A1 (ja) * | 2006-03-02 | 2007-09-07 | Nec Corporation | 画像処理装置、表示装置、画像処理方法及びプログラム |
JP2007336531A (ja) | 2006-05-17 | 2007-12-27 | Sony Corp | 画像補正回路、画像補正方法および画像表示装置 |
WO2009004863A1 (ja) * | 2007-07-04 | 2009-01-08 | Nec Corporation | 画像処理装置、表示装置及び画像処理方法並びにそのプログラム |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08138043A (ja) * | 1994-11-10 | 1996-05-31 | Matsushita Electric Ind Co Ltd | 画像処理装置 |
JP3748786B2 (ja) * | 2000-06-19 | 2006-02-22 | アルプス電気株式会社 | 表示装置および画像信号の処理方法 |
US7251056B2 (en) * | 2001-06-11 | 2007-07-31 | Ricoh Company, Ltd. | Image processing apparatus, image processing method and information recording medium |
JP4260115B2 (ja) * | 2003-03-24 | 2009-04-30 | 日立ソフトウエアエンジニアリング株式会社 | 吸光度読取装置、吸光度読取装置制御方法及び吸光度算出プログラム |
JP3880540B2 (ja) * | 2003-05-16 | 2007-02-14 | キヤノン株式会社 | 表示パネルの駆動制御装置 |
JP4783003B2 (ja) * | 2003-11-28 | 2011-09-28 | 株式会社東芝 | 個人認証媒体発行装置および個人認証媒体発行方法 |
EP1781043B1 (en) * | 2004-07-07 | 2013-01-23 | Nikon Corporation | Image processor and computer program product |
US20060092329A1 (en) * | 2004-10-29 | 2006-05-04 | Canon Kabushiki Kaisha | Image display apparatus and correction apparatus thereof |
WO2006103862A1 (ja) * | 2005-03-29 | 2006-10-05 | Matsushita Electric Industrial Co., Ltd. | 画像表示装置及び画像表示方法 |
JP4750801B2 (ja) * | 2005-12-20 | 2011-08-17 | 富士通株式会社 | 画像判別装置 |
JP4054360B1 (ja) * | 2007-03-30 | 2008-02-27 | 三菱電機株式会社 | 画像処理装置およびプログラム記録媒体 |
WO2009044549A1 (ja) * | 2007-10-03 | 2009-04-09 | Panasonic Corporation | ブロック歪みを減少させる方法および装置 |
-
2010
- 2010-07-29 JP JP2011524826A patent/JP5502868B2/ja not_active Expired - Fee Related
- 2010-07-29 US US13/387,640 patent/US20120127371A1/en not_active Abandoned
- 2010-07-29 WO PCT/JP2010/062783 patent/WO2011013745A1/ja active Application Filing
- 2010-07-29 RU RU2012106583/07A patent/RU2012106583A/ru not_active Application Discontinuation
- 2010-07-29 CN CN201080039351.3A patent/CN102484675B/zh not_active Expired - Fee Related
- 2010-07-29 EP EP10804491.8A patent/EP2461566A4/en not_active Withdrawn
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Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1084481A (ja) * | 1996-06-28 | 1998-03-31 | Dainippon Screen Mfg Co Ltd | 画像の階調補間方法及び装置、並びに、その処理を実行するためのプログラムを記録した記録媒体 |
JPH11288242A (ja) | 1998-04-06 | 1999-10-19 | Toshiba Electronic Engineering Corp | γ曲線調整装置、その方法及びそれを用いた平面表示装置 |
JP2002281346A (ja) * | 2001-03-15 | 2002-09-27 | Matsushita Electric Ind Co Ltd | 階調補正装置 |
JP2004032427A (ja) * | 2002-06-26 | 2004-01-29 | Sharp Corp | 画像処理方法、画像処理装置及びそれを備えた画像形成装置、撮像装置、並びにコンピュータプログラム、記録媒体 |
JP2004318461A (ja) * | 2003-04-16 | 2004-11-11 | Seiko Epson Corp | トーンジャンプを目立たなくする画像処理 |
JP2006033469A (ja) * | 2004-07-16 | 2006-02-02 | Hitachi Ltd | 階調補正回路及びこれを用いたテレビジョン受像機 |
WO2006025486A1 (ja) * | 2004-09-01 | 2006-03-09 | Nec Corporation | 画像補正処理システム及び画像補正処理方法 |
JP2006101363A (ja) | 2004-09-30 | 2006-04-13 | Matsushita Electric Ind Co Ltd | 映像信号処理装置 |
WO2007099755A1 (ja) * | 2006-03-02 | 2007-09-07 | Nec Corporation | 画像処理装置、表示装置、画像処理方法及びプログラム |
JP2007336531A (ja) | 2006-05-17 | 2007-12-27 | Sony Corp | 画像補正回路、画像補正方法および画像表示装置 |
WO2009004863A1 (ja) * | 2007-07-04 | 2009-01-08 | Nec Corporation | 画像処理装置、表示装置及び画像処理方法並びにそのプログラム |
Non-Patent Citations (1)
Title |
---|
See also references of EP2461566A4 |
Also Published As
Publication number | Publication date |
---|---|
CN102484675B (zh) | 2015-03-25 |
MX2012001233A (es) | 2012-03-26 |
JPWO2011013745A1 (ja) | 2013-01-10 |
RU2012106583A (ru) | 2013-10-20 |
CN102484675A (zh) | 2012-05-30 |
EP2461566A1 (en) | 2012-06-06 |
JP5502868B2 (ja) | 2014-05-28 |
US20120127371A1 (en) | 2012-05-24 |
EP2461566A4 (en) | 2013-06-19 |
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