CN107590780A - Method for displaying image, terminal and computer-readable recording medium - Google Patents
Method for displaying image, terminal and computer-readable recording medium Download PDFInfo
- Publication number
- CN107590780A CN107590780A CN201710679863.XA CN201710679863A CN107590780A CN 107590780 A CN107590780 A CN 107590780A CN 201710679863 A CN201710679863 A CN 201710679863A CN 107590780 A CN107590780 A CN 107590780A
- Authority
- CN
- China
- Prior art keywords
- data
- hdr
- sdr
- image
- display
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 50
- 238000006243 chemical reaction Methods 0.000 claims abstract description 23
- 230000009467 reduction Effects 0.000 claims abstract description 20
- 238000010606 normalization Methods 0.000 claims description 18
- 108090000623 proteins and genes Proteins 0.000 claims description 16
- 230000008859 change Effects 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 238000013139 quantization Methods 0.000 description 7
- 238000004891 communication Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 238000013507 mapping Methods 0.000 description 3
- 238000004422 calculation algorithm Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000005314 correlation function Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000003702 image correction Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/90—Dynamic range modification of images or parts thereof
- G06T5/92—Dynamic range modification of images or parts thereof based on global image properties
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/20—Special algorithmic details
- G06T2207/20172—Image enhancement details
- G06T2207/20208—High dynamic range [HDR] image processing
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Picture Signal Circuits (AREA)
- Controls And Circuits For Display Device (AREA)
- Transforming Electric Information Into Light Information (AREA)
Abstract
The present invention provides a kind of method for displaying image, and this method includes：Standard dynamic range SDR data is obtained, and coding reduction treatment is carried out to the SDR data, obtains original linear data corresponding to the SDR data；HDR HDR conversions are carried out to the original linear data according to the peak brightness of graphic display terminal, obtain nonlinear data；The preset adjustment of gamma is carried out to the nonlinear data, obtains HDR data, and the image according to corresponding to being shown the HDR data.The present invention also provides a kind of graphic display terminal and computer-readable recording medium.SDR original contents can be reduced into original linear data by the present invention, initial data is remapped again, obtain matching view data with target HDR display, SDR contents are shown on HDR display with rational brightness, and the characteristic of HDR content high dynamics is showed, improve the experience of user.
Description
Technical field
The present invention relates to technical field of image processing, more particularly to a kind of method for displaying image, terminal and computer-readable
Storage medium.
Background technology
Standard dynamic range SDR (Standard-Dynamic Range), comes from the CRT monitor epoch, its normal brightness
It is 100cd/m2, the color space used is BT709 (high definition) or BT601 (SD), with BT1886 (gamma) 8bit quantization volumes
Code.And as Display Technique continues to develop and updates, the New Type Display Devices such as current LCD, OLED start to employ height
Dynamic range HDR (HighDynamic Range) Display Technique, it uses BT2020 color space, and gamut range is significantly
Expand, brightness considerably beyond CRT devices.
But on the basis of 100cd/m, the SDR contents edited and recorded are gathered using BT1886, it is only left in 100cd/m such as CRT
Shown on right low bright display, original contents could be correctly reappeared, so as to reappear the intention directed in editing cubicle.With 100cd/m
The SDR programs of making, when being shown on 500cd/m or higher 1000cd/m HDR displays, its brightness can excessively be amplified,
User can think that image content seems dazzling, uncomfortable during viewing, reduce the experience of user.
The content of the invention
It is a primary object of the present invention to propose a kind of method for displaying image, terminal and computer-readable recording medium, purport
The too high technical problem of brightness when solving SDR image content and being shown on HDR display.
To achieve the above object, the present invention provides a kind of method for displaying image, and described image display methods is applied to image
Display terminal, described image display methods comprise the following steps：
Standard dynamic range SDR data is obtained, and coding reduction treatment is carried out to the SDR data, obtains the SDR numbers
According to corresponding original linear data；
HDR HDR is carried out according to the peak brightness of described image display terminal to the original linear data to turn
Change, obtain nonlinear data；
The preset adjustment of gamma is carried out to the nonlinear data, obtains HDR data, and show pair according to the HDR data
The image answered.
Optionally, the acquisition standard dynamic range SDR data, and coding reduction treatment is carried out to the SDR data, obtain
Obtain includes corresponding to the SDR data the step of original linear data：
SDR data is obtained, and the SDR data is normalized according to SDR image signal locating depth, obtains normalizing
Change data；
The normalization data is carried out linearly also according to the gamma characteristic of SDR display systems or electro-optic conversion EOTF characteristics
Original place is managed, and obtains original linear data corresponding to the SDR data.
Optionally, it is described that the preset adjustment of gamma is carried out to the nonlinear data, HDR data are obtained, and according to the HDR
Data show corresponding to image the step of include：
It is pre- that gamma is carried out to the nonlinear data according to the gamma characteristic of SDR display systems or electro-optic conversion EOTF characteristics
Put, and the nonlinear data is adjusted according to default Dynamic gene, obtain HDR data；
The image according to corresponding to being shown the HDR data.
Optionally, the preset adjustment of gamma is carried out to the nonlinear data, obtains HDR data, and according to the HDR data
Corresponding to display the step of image after, in addition to：
When the brightness for receiving user's triggering manually adjusts instruction, according to the brightness manually adjusts instruction adjustment
HDR data, to adjust the brightness of current display image, and Dynamic gene is preset according to the HDR data point reuses after adjustment.
Optionally, it is described that the preset adjustment of gamma is carried out to the nonlinear data, HDR data are obtained, and according to the HDR
Data show corresponding to image the step of after, in addition to：
When receiving the contrast idsplay order of user's triggering, institute is shown with default display rule simultaneously in same interface
State image corresponding to image corresponding to SDR data and the HDR data.
In addition, to achieve the above object, the present invention also provides a kind of graphic display terminal, and described image display terminal includes
Processor, memory and it is stored on the memory and can be by the image display program of the computing device, wherein described
Following steps are realized when image display program is by the computing device：
Standard dynamic range SDR data is obtained, and coding reduction treatment is carried out to the SDR data, obtains the SDR numbers
According to corresponding original linear data；
HDR HDR is carried out according to the peak brightness of described image display terminal to the original linear data to turn
Change, obtain nonlinear data；
The preset adjustment of gamma is carried out to the nonlinear data, obtains HDR data, and show pair according to the HDR data
The image answered.
Optionally, the acquisition standard dynamic range SDR data, and coding reduction treatment is carried out to the SDR data, obtain
Obtain includes corresponding to the SDR data the step of original linear data：
SDR data is obtained, and the SDR data is normalized according to SDR image signal locating depth, obtains normalizing
Change data；
The normalization data is carried out linearly also according to the gamma characteristic of SDR display systems or electro-optic conversion EOTF characteristics
Original place is managed, and obtains original linear data corresponding to the SDR data.
Optionally, it is described that the preset adjustment of gamma is carried out to the nonlinear data, HDR data are obtained, and according to the HDR
Data show corresponding to image the step of include：
It is pre- that gamma is carried out to the nonlinear data according to the gamma characteristic of SDR display systems or electro-optic conversion EOTF characteristics
Put, and the nonlinear data is adjusted according to default Dynamic gene, obtain HDR data；
The image according to corresponding to being shown the HDR data；
When described image shows program by the computing device, following steps are also realized：
When the brightness for receiving user's triggering manually adjusts instruction, according to the brightness manually adjusts instruction adjustment
HDR data, to adjust the brightness of current display image, and Dynamic gene is preset according to the HDR data point reuses after adjustment.
Optionally, when described image shows program by the computing device, following steps are also realized：
When receiving the contrast idsplay order of user's triggering, institute is shown with default display rule simultaneously in same interface
State image corresponding to image corresponding to SDR data and the HDR data.
In addition, to achieve the above object, the present invention also provides a kind of computer-readable recording medium, described computer-readable
Had image display program stored therein in storage medium, described image is shown realizes that image described above shows when program is executed by processor
The step of showing method.
The present invention carries out coding reduction treatment by obtaining standard dynamic range SDR data, and to the SDR data, obtains
Obtain original linear data corresponding to the SDR data；According to the peak brightness of described image display terminal to the original linear
Data carry out HDR HDR conversions, obtain nonlinear data；The preset adjustment of gamma is carried out to the nonlinear data, obtained
Obtain HDR data, and the image according to corresponding to being shown the HDR data.By with upper type, the present invention by SDR original contents also
Original is into original linear data, then initial data is remapped (MAPPING), obtains matching with target HDR display
View data so that SDR contents can be shown on HDR display with rational brightness, and show HDR content high dynamics
Characteristic, improve the experience of user.
Brief description of the drawings
Fig. 1 is the hardware architecture diagram for the graphic display terminal that scheme of the embodiment of the present invention is related to；
Fig. 2 is the schematic flow sheet of method for displaying image first embodiment of the present invention；
Fig. 3 is to carry out the preset adjustment of gamma to the nonlinear data described in Fig. 2, obtains HDR data, and according to described
HDR data carry out the refinement schematic flow sheet that image is shown；
Fig. 4 is the schematic flow sheet of method for displaying image second embodiment of the present invention.
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The main thought of scheme of the embodiment of the present invention is：Standard dynamic range SDR data is obtained, and to the SDR data
Coding reduction treatment is carried out, obtains original linear data corresponding to the SDR data；According to HDR HDR display
Peak brightness carries out HDR conversions to the original linear data, obtains nonlinear data；Gamma is carried out to the nonlinear data
Preset adjustment, HDR data are obtained, and carry out image according to the HDR data and show.
Reference picture 1, Fig. 1 are the hardware architecture diagram for the graphic display terminal that scheme of the embodiment of the present invention is related to.
Graphic display terminal in the embodiment of the present invention can be intelligent television, smart mobile phone, tablet personal computer, portable calculating
Machine etc. possesses HDR display screens and with the terminal device of display playing function.As shown in figure 1, the image of the embodiment of the present invention shows
Show that terminal can include processor 1001 (such as CPU), communication bus 1002, user interface 1003, network interface 1004, storage
Device 1005.Wherein, communication bus 1002 is used to realize the connection communication between these components；User interface 1003 includes wrapping
Include display screen (Display), input block such as keyboard (Keyboard)；Network interface 1004 can optionally include standard
Wireline interface, wave point (such as WI-FI interfaces)；Memory 1005 can be high-speed RAM memory or stable deposit
Reservoir (non-volatile memory), such as magnetic disk storage, memory 1005 optionally can also be independently of foregoing place
Manage the storage device of device 1001.
Optionally, graphic display terminal can also include camera, RF (Radio Frequency, radio frequency) circuit, sensing
Device, voicefrequency circuit, WiFi module etc..Wherein, sensor ratio such as optical sensor, motion sensor and other sensors.Tool
Body, optical sensor may include ambient light sensor and proximity transducer, wherein, ambient light sensor can be according to ambient light
Light and shade adjusts the brightness of display screen, proximity transducer can according to the distance of lighting apparatus and object of reference, close display screen and/or
Backlight.As one kind of motion sensor, gravity accelerometer can detect in all directions (generally three axles) acceleration
Size, size and the direction of gravity are can detect that when static, (for example horizontal/vertical screen is cut available for the application of identification terminal posture
Change, dependent game, magnetometer pose calibrating), Vibration identification correlation function (such as pedometer, tap) etc.；Certainly, image is shown
Terminal can also configure the other sensors such as gyroscope, barometer, hygrometer, thermometer, infrared ray sensor, no longer superfluous herein
State.
It will be understood by those skilled in the art that the hardware configuration of the graphic display terminal shown in Fig. 1 is not formed to this
The restriction of invention graphic display terminal, can be included than illustrating more or less parts, either combine some parts or not
Same part arrangement.
With continued reference to Fig. 1, in Fig. 1 as a kind of computer-readable storage medium memory 1005 can include operating system,
Network communication module and image display program.
In the terminal shown in Fig. 1, network communication module is mainly used in connection server, and carrying out data with server leads to
Letter；And processor 1001 can call the image display program stored in memory 1005, and perform following operate：
Standard dynamic range SDR data is obtained, and coding reduction treatment is carried out to the SDR data, obtains the SDR numbers
According to corresponding original linear data；
HDR HDR is carried out according to the peak brightness of described image display terminal to the original linear data to turn
Change, obtain nonlinear data；
The preset adjustment of gamma is carried out to the nonlinear data, obtains HDR data, and show pair according to the HDR data
The image answered.
Further, the acquisition standard dynamic range SDR data, and coding reduction treatment is carried out to the SDR data,
The step of obtaining original linear data corresponding to the SDR data includes：
SDR data is obtained, and the SDR data is normalized according to SDR image signal locating depth, obtains normalizing
Change data；
The normalization data is carried out linearly also according to the gamma characteristic of SDR display systems or electro-optic conversion EOTF characteristics
Original place is managed, and obtains original linear data corresponding to the SDR data.
Further, it is described that the preset adjustment of gamma is carried out to the nonlinear data, HDR data are obtained, and according to described
HDR data show corresponding to image the step of include：
It is pre- that gamma is carried out to the nonlinear data according to the gamma characteristic of SDR display systems or electro-optic conversion EOTF characteristics
Put, and the nonlinear data is adjusted according to default Dynamic gene, obtain HDR data；
The image according to corresponding to being shown the HDR data；
When described image shows program by the computing device, following steps are also realized：
When the brightness for receiving user's triggering manually adjusts instruction, according to the brightness manually adjusts instruction adjustment
HDR data, to adjust the brightness of current display image, and Dynamic gene is preset according to the HDR data point reuses after adjustment.
Further, when described image shows program by the computing device, following steps are also realized：
When receiving the contrast idsplay order of user's triggering, institute is shown with default display rule simultaneously in same interface
State image corresponding to image corresponding to SDR data and the HDR data.
Based on the hardware configuration of above-mentioned graphic display terminal, each embodiment of method for displaying image of the present invention is proposed.
Reference picture 2, Fig. 2 are the schematic flow sheet of method for displaying image first embodiment of the present invention.
In the present embodiment, described image display methods comprises the following steps：
Step S10, standard dynamic range SDR data is obtained, and coding reduction treatment is carried out to the SDR data, obtained
Original linear data corresponding to the SDR data；
Standard dynamic range SDR (Standard-Dynamic Range), comes from the CRT monitor epoch, its normal brightness
It is 100cd/m2, the color space used is BT709 (high definition) or BT601 (SD), with BT1886 (gamma) 8bit quantization volumes
Code.And as Display Technique continues to develop and updates, the New Type Display Devices such as current LCD, OLED start to employ height
Dynamic range HDR (High Dynamic Range) Display Technique, it uses BT2020 color space, and gamut range is significantly
Expand, brightness considerably beyond CRT devices.SDR content is made based on 100cd/m2, therefore is only existed
100cd/m2SDR displays on, could faithful reproduction director end picture state.And EOTF (the electric light that existing SDR is used
Transfer characteristic) it is BT1886, it is relative quantization encoding system, therefore same 100cd/m2The content of making, with same
EOTF is in 1000cd/m2HDR display on show, reappear brightness then by proportional Linear Amplifer, i.e.,：Script 100cd/m2's
Original SDR content pixels point, in 1000cd/m21000cd/m is then shown as on display2.Therefore script mean flow rate is relatively low
SDR contents, in highlighted 1000cd/m2, will be too high because of mean flow rate when being shown on display, to user cause it is uncomfortable,
Dazzling sensation.
For these reasons, a kind of method for displaying image is proposed in the present embodiment, is shown with solving SDR image content in HDR
Show the technical problem that brightness is too high when being shown on device.
Specifically, the method for displaying image in the present embodiment is applied to graphic display terminal, the graphic display terminal can be with
It is that intelligent television, smart mobile phone, tablet personal computer, pocket computer etc. possess HDR display screens and with the end of display playing function
End equipment, illustrated with the intelligent television with HDR display screens in the present embodiment.User watches some in opening intelligent television
During program, now intelligent television will pass through program data corresponding to the Network Capture program；The program data is standard dynamic model
The data of SDR forms are enclosed, and intelligent television is HDR HDR display screen, if directly carrying out image according to the SDR data
It has been shown that, then occur the problem of brightness is too high；Therefore need the SDR data of the program changing into corresponding HDR data, then root
Image is carried out according to HDR data to show.Now intelligent television will reduce to SDR data, due to existing SDR display systems
All it is that original linear data L is obtained into SDR data by BT1886 (gamma) 8bit quantization encodings, can be right according to this case
SDR data carries out coding reduction, so as to obtain the original linear data before the SDR data quantization encoding.
Further, SDR data is carried out in coding reduction process in the present embodiment, is that SDR data is returned first
One change is handled, and obtains normalization data；Linear reduction treatment is carried out to normalization data again, obtained original corresponding to SDR data
Linear data.Wherein normalization is for the convenience of subsequent data processing, is accelerated next to that protecting convergence during trace sort run, therefore
Data are normalized, are limited in the certain limit of needs.
Normalization process in the present embodiment, it is to be carried out according to SDR image signal locating depth, is carried out using equation below：
N1=SSDR/(2n-1)。
Wherein, N1For normalization data；SSDRFor SDR data；N is picture signal bit locating depths, usual SDR image signal position
Depth is 8bit, i.e. n takes 8.Before normalized, SDR data SSDRData value is between 0 to 255；After normalization, obtain
Normalization data N1Data value is between 0 to 1.
After normalization data is obtained, linear reduction treatment is carried out to normalization data, reduction SDR signals are in quantization encoding
Preceding linear data.Reduction treatment in the present embodiment is gamma characteristic or electro-optic conversion EOTF spies based on SDR display systems
Property carry out, carried out using equation below：
L=N1 γ。
Wherein, L is original linear data corresponding to SDR data；N1For normalization data；γ is the gal of SDR display systems
Horse characteristic or electro-optic conversion EOTF characteristics.According to above-mentioned processing, that is, the original linear number before SDR data quantization encoding is obtained
According to.
Step S20, high dynamic range is carried out to the original linear data according to the peak brightness of described image display terminal
HDR conversions are enclosed, obtain nonlinear data；
In the present embodiment, when reduction obtains the original linear data of program, you can original linear data L is carried out again
Map (mapping), to obtain the data for being adapted to the HDR display screens of intelligent television to show.And the characteristics of HDR technology maximums, is exactly
Possess very high luminance dynamic range, therefore, in the present embodiment, when obtaining original linear data, image display will be obtained eventually
The brightness attribute value of the HDR display screens at end, and HDR conversions are carried out to original linear data according to peak brightness, convert thereof into
With the nonlinear data (being re-encoded to the corresponding initial data of SDR data) of HDR display screens matching.
HDR transfer processes in the present embodiment, are carried out using equation below：
N=Lγ1。
Wherein, N is the nonlinear data of HDR conversions；L is normalization data；γ 1=1+alog10(Yp/ 1000), YpFor
Peak brightness (the cd/m of display screen2), a is the constant between 0 to 1.
Step S30, the preset adjustment of gamma is carried out to the nonlinear data, obtains HDR data, and according to the HDR numbers
Shown according to image is carried out.
In the present embodiment, when obtaining nonlinear data, do not shown immediately according to the nonlinear data；But will
The preset adjustment of gamma is carried out to nonlinear data, offsets the gamma characteristic of display.Specifically, to video camera in reality or imaging
For equipment, input energy and the relation being recorded between the colour brightness in picture file are linear；But due to tradition
CRT monitor (SDR) is to use kinescope, and it is come the brightness on control display screen curtain, so by control electric current size
And the relation between brightness and electric current is not linear, this results in what the image that CRT monitor is shown was caught with picture pick-up device
Real image is inconsistent, and in order to correct this difference, video camera all can carry out a gamma to data automatically when preserving image
Correction.Based on this reason, the present embodiment is when obtaining nonlinear data, it is necessary to carry out the preset adjustment of gamma to nonlinear data
(" anti-gamma " corrects), so as to obtain HDR data.When obtaining HDR data, you can it is corresponding to carry out display according to the HDR data
Picture material.
The preset adjustment process of gamma in the present embodiment, is carried out using equation below：
SHDR=(2m-1)N1/γ。
Wherein, SHDRFor HDR data；M is output image signal locating depth；N is nonlinear data；γ is SDR display systems
Gamma characteristic or EOTF characteristics.
The HDR data obtained by said process, its corresponding EOTF characteristic curve have changed.Corresponding image with
Image is compared corresponding to SDR, and its average brightness level is decreased.Now intelligent television is shown pair according to the HDR data
The image answered, watched for user.
Further, the method for displaying image in the present embodiment is realized by intelligent television, and certain image is shown
Method can also be realized by other image display devices.The device can also be independently of the external equipment outside TV,
The interior arrangement that can also be mounted among TV, the device have the above-mentioned image display function of television set, certain dress
Putting can also accordingly set up other functions, so as to realize each step of above-mentioned method for displaying image.
In the present embodiment, by obtaining standard dynamic range SDR data, and to the SDR data encode also original place
Reason, obtains original linear data corresponding to the SDR data；According to the peak brightness of described image display terminal to described original
Linear data carries out HDR HDR conversions, obtains nonlinear data；The preset tune of gamma is carried out to the nonlinear data
It is whole, obtain HDR data, and the image according to corresponding to being shown the HDR data.By the way that with upper type, SDR original contents are reduced
Into original linear data, then initial data is remapped (MAPPING), obtain matching figure with target HDR display
As data so that SDR contents can be shown on HDR display with rational brightness, and show HDR content high dynamics
Characteristic, improve the experience of user.
Reference picture 3, Fig. 3 are to carry out the preset adjustment of gamma to the nonlinear data described in Fig. 2, obtain HDR data, and root
The refinement schematic flow sheet shown according to HDR data progress image.
Based on above-mentioned embodiment illustrated in fig. 2, step S30 includes：
Step S31, the nonlinear data is entered according to the gamma characteristic of SDR display systems or electro-optic conversion EOTF characteristics
Row gamma is preset, and the nonlinear data is adjusted according to default Dynamic gene, obtains HDR data；
Step S32, the image according to corresponding to being shown the HDR data.
In the present embodiment, when obtaining nonlinear data, do not shown immediately according to the nonlinear data；But will
The preset adjustment of gamma is carried out to nonlinear data, offsets the gamma characteristic of display.During the preset processing of gamma is carried out,
Can be carried out using equation below：
SHDR=(2m-1)N1/γ。
Wherein, SHDRFor HDR data；M is output image signal locating depth；N is nonlinear data；γ is SDR display systems
Gamma characteristic or EOTF characteristics.YpFor the peak brightness (cd/m of display screen2), a is the constant between 0 to 1.
During gamma is preset, it can also be added according to actual conditions in the formula of the preset processing of above-mentioned gamma
Dynamic gene is adjusted, and with the display properties according to different displays, individual character adjustment is carried out to HDR data.Adjusted adding
During the factor, the specific process that adjusts can use equation below：
SHDR=(2m-1)Nβ/γ。
Wherein, SHDRFor HDR data；M is output image signal locating depth；N is nonlinear data；γ is the gamma of SDR systems
Characteristic or EOTF characteristics；β is default Dynamic gene, and for its data value between 0 to 1, the default Dynamic gene can be by user or factory
Family is configured when dispatching from the factory.
The HDR data obtained by said process, its corresponding EOTF characteristic curve have changed.Corresponding image with
Image is compared corresponding to SDR, and its average brightness level is decreased；Simultaneously by adjusting Dynamic gene β, HDR data are carried out
Further adaptation adjustment.The now intelligent television i.e. image according to corresponding to being shown HDR data, is watched for user.
Further, intelligent television is after image corresponding to being shown according to HDR data, if user thinks that the brightness is improper
(image is excessively bright or excessively dark), user manually can be adjusted to display brightness.Specifically, user can pass through
Brightness adjustment option corresponding to button selection on remote control or intelligent television body, finger is manually adjusted so as to trigger brightness
Order；Intelligent television manually adjusts instruction to HDR when the brightness for receiving user's triggering manually adjusts instruction according to the brightness
Data are adjusted again, so as to change the brightness of current display image；User is when completing to manually adjust operation, intelligent television
According to formula S in HDR data and step S31 after can user be manually adjustedHDR=(2m-1)Nβ/γThe HDR data of gained are carried out
Compare, and determine difference between the two, amendment is automatically adjusted to default Dynamic gene (β) further according to the difference, so as to
So that the adjustment algorithm of intelligent television is more accurate, the data to be converted according to the adjustment algorithm and and shown image more can
Meet the actual viewing demand of user, improve the experience of user.
Reference picture 4, Fig. 4 are the schematic flow sheet of method for displaying image second embodiment of the present invention.
Based on above-mentioned embodiment illustrated in fig. 2, after step S30, in addition to：
Step S40, it is same with default display rule in same interface when receiving the contrast idsplay order of user's triggering
When show image corresponding to image corresponding to the SDR data and the HDR data.
In the present embodiment, intelligent television is when obtaining HDR data, you can the image according to corresponding to being shown HDR data, and this
When intelligent television do not delete former SDR data immediately；User can also trigger corresponding instruction, make intelligence during viewing
Energy TV shows image corresponding to image corresponding to SDR data and HDR data simultaneously in same interface with default display rule,
So as to more intuitively by SDR image content and HDR image content contrasted.Specifically, user can by remote control or
Contrast corresponding to button selection on intelligent television body shows option, so as to trigger contrast idsplay order；Intelligent television is connecing
When receiving the contrast display option of user's triggering, i.e., file for reference inside and find former SDR data, and according to the SDR data and HDR data
Image is carried out in same interface with default display rule to show；Wherein default display rule includes display location, and user can be with
The display location of two images is configured, such as the viewing area of display screen is divided into left and right two parts, the left side is used
In picture material corresponding to display SDR data, the right is used to show picture material corresponding to HDR data；Certainly can also be by
Viewing area is divided into two parts up and down, and top is used to show picture material corresponding to SDR data, following to be used to show HDR
Picture material corresponding to data；Certainly other display modes be can also be, facilitate user by SDR image content and HDR scheme
As content is contrasted, further adjusted further according to brightness of the comparing result to image.
The present invention also provides a kind of computer-readable recording medium.
Had image display program stored therein on computer-readable recording medium of the present invention, described image shows program by processor
Realized during execution such as the step of above-mentioned method for displaying image.
Wherein, the method realized when image display program is performed can refer to each reality of method for displaying image of the present invention
Example is applied, here is omitted.
It should be noted that herein, term " comprising ", "comprising" or its any other variant are intended to non-row
His property includes, so that process, method, article or system including a series of elements not only include those key elements, and
And also include the other element being not expressly set out, or also include for this process, method, article or system institute inherently
Key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that including this
Other identical element also be present in the process of key element, method, article or system.
The embodiments of the present invention are for illustration only, do not represent the quality of embodiment.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on such understanding, technical scheme is substantially done to prior art in other words
Going out the part of contribution can be embodied in the form of software product, and the computer software product is stored in one as described above
In storage medium (such as ROM/RAM, magnetic disc, CD), including some instructions to cause a station terminal equipment (can be mobile phone,
Computer, server, air conditioner, or network equipment etc.) perform method described in each embodiment of the present invention.
The preferred embodiments of the present invention are these are only, are not intended to limit the scope of the invention, it is every to utilize this hair
The equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of method for displaying image, it is characterised in that described image display methods is applied to graphic display terminal, described image
Display methods comprises the following steps：
Standard dynamic range SDR data is obtained, and coding reduction treatment is carried out to the SDR data, obtains the SDR data pair
The original linear data answered；
HDR HDR conversions are carried out to the original linear data according to the peak brightness of described image display terminal, obtained
Obtain nonlinear data；
The preset adjustment of gamma is carried out to the nonlinear data, obtains HDR data, and according to corresponding to being shown the HDR data
Image.
2. method for displaying image as claimed in claim 1, it is characterised in that the acquisition standard dynamic range SDR data, and
The step of carrying out coding reduction treatment to the SDR data, obtaining original linear data corresponding to the SDR data includes：
SDR data is obtained, and the SDR data is normalized according to SDR image signal locating depth, obtains normalization number
According to；
Also original place is carried out linearly to the normalization data according to the gamma characteristic of SDR display systems or electro-optic conversion EOTF characteristics
Reason, obtains original linear data corresponding to the SDR data.
3. method for displaying image as claimed in claim 1, it is characterised in that described pre- to nonlinear data progress gamma
Adjustment is put, obtains HDR data, and include according to corresponding to being shown the HDR data the step of image：
It is preset to nonlinear data progress gamma according to the gamma characteristic of SDR display systems or electro-optic conversion EOTF characteristics,
And the nonlinear data is adjusted according to default Dynamic gene, obtain HDR data；
The image according to corresponding to being shown the HDR data.
4. method for displaying image as claimed in claim 3, it is characterised in that described pre- to nonlinear data progress gamma
Put adjustment, obtain HDR data, and according to corresponding to being shown the HDR data the step of image after, in addition to：
When the brightness for receiving user's triggering manually adjusts instruction, instruction is manually adjusted according to the brightness and adjusts the HDR
Data, to adjust the brightness of current display image, and Dynamic gene is preset according to the HDR data point reuses after adjustment.
5. the method for displaying image as any one of Claims 1-4, it is characterised in that described to the non-linear number
According to carry out the preset adjustment of gamma, obtain HDR data, and according to corresponding to being shown the HDR data the step of image after, also wrap
Include：
When receiving the contrast idsplay order of user's triggering, with described in default display rule display simultaneously in same interface
Image corresponding to image corresponding to SDR data and the HDR data.
6. a kind of graphic display terminal, it is characterised in that described image display terminal includes processor, memory and is stored in institute
State on memory and by the image display program of the computing device, wherein described image program can be shown by the processor
Following steps are realized during execution：
Standard dynamic range SDR data is obtained, and coding reduction treatment is carried out to the SDR data, obtains the SDR data pair
The original linear data answered；
HDR HDR conversions are carried out to the original linear data according to the peak brightness of described image display terminal, obtained
Obtain nonlinear data；
The preset adjustment of gamma is carried out to the nonlinear data, obtains HDR data, and according to corresponding to being shown the HDR data
Image.
7. graphic display terminal as claimed in claim 6, it is characterised in that the acquisition standard dynamic range SDR data, and
The step of carrying out coding reduction treatment to the SDR data, obtaining original linear data corresponding to the SDR data includes：
SDR data is obtained, and the SDR data is normalized according to SDR image signal locating depth, obtains normalization number
According to；
Also original place is carried out linearly to the normalization data according to the gamma characteristic of SDR display systems or electro-optic conversion EOTF characteristics
Reason, obtains original linear data corresponding to the SDR data.
8. graphic display terminal as claimed in claim 6, it is characterised in that described pre- to nonlinear data progress gamma
Adjustment is put, obtains HDR data, and include according to corresponding to being shown the HDR data the step of image：
It is preset to nonlinear data progress gamma according to the gamma characteristic of SDR display systems or electro-optic conversion EOTF characteristics,
And the nonlinear data is adjusted according to default Dynamic gene, obtain HDR data；
The image according to corresponding to being shown the HDR data；
When described image shows program by the computing device, following steps are also realized：
When the brightness for receiving user's triggering manually adjusts instruction, instruction is manually adjusted according to the brightness and adjusts the HDR
Data, to adjust the brightness of current display image, and Dynamic gene is preset according to the HDR data point reuses after adjustment.
9. the graphic display terminal as any one of claim 6 to 8, it is characterised in that described image shows program quilt
During the computing device, following steps are also realized：
When receiving the contrast idsplay order of user's triggering, with described in default display rule display simultaneously in same interface
Image corresponding to image corresponding to SDR data and the HDR data.
10. a kind of computer-readable recording medium, it is characterised in that be stored with image on the computer-readable recording medium and show
Show program, described image, which is shown, realizes that the image as any one of Claims 1-4 is shown when program is executed by processor
The step of method.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710679863.XA CN107590780B (en) | 2017-08-09 | 2017-08-09 | Image display method, terminal and computer readable storage medium |
| PCT/CN2018/093474 WO2019029294A1 (en) | 2017-08-09 | 2018-06-28 | Image display method, terminal and computer-readable storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710679863.XA CN107590780B (en) | 2017-08-09 | 2017-08-09 | Image display method, terminal and computer readable storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107590780A true CN107590780A (en) | 2018-01-16 |
| CN107590780B CN107590780B (en) | 2023-01-20 |
Family
ID=61041540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710679863.XA Active CN107590780B (en) | 2017-08-09 | 2017-08-09 | Image display method, terminal and computer readable storage medium |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107590780B (en) |
| WO (1) | WO2019029294A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106686363A (en) * | 2016-11-01 | 2017-05-17 | 青岛海信电器股份有限公司 | Signal mixed processing method and device in display terminal |
| CN108495108A (en) * | 2018-03-02 | 2018-09-04 | 深圳创维－Rgb电子有限公司 | Image conversion method and device, terminal, storage medium |
| CN109327734A (en) * | 2018-11-27 | 2019-02-12 | 成都索贝数码科技股份有限公司 | A method of HDR video that surveying light based on dynamic downconverts to SDR video |
| WO2019029294A1 (en) * | 2017-08-09 | 2019-02-14 | 深圳Tcl新技术有限公司 | Image display method, terminal and computer-readable storage medium |
| CN110415634A (en) * | 2018-04-27 | 2019-11-05 | 苹果公司 | Standard and high dynamic range display system and method for high dynamic range displays |
| CN115393197A (en) * | 2022-10-27 | 2022-11-25 | 摩尔线程智能科技(北京)有限责任公司 | Image synthesis method and device and image processing equipment |
| WO2023035943A1 (en) * | 2021-09-10 | 2023-03-16 | 北京字跳网络技术有限公司 | Color card generating method, image processing method, and apparatuses, and readable storage medium |
| CN116072059A (en) * | 2023-02-27 | 2023-05-05 | 卡莱特云科技股份有限公司 | Image display method and device, electronic equipment and storage medium |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103617792A (en) * | 2013-11-14 | 2014-03-05 | 天津三星电子有限公司 | Method for adjusting image display of display terminal and display terminal |
| CN105393525A (en) * | 2013-07-18 | 2016-03-09 | 皇家飞利浦有限公司 | Methods and apparatuses for creating code mapping functions for encoding an hdr image, and methods and apparatuses for use of such encoded images |
| CN105976325A (en) * | 2016-06-29 | 2016-09-28 | 上海小蚁科技有限公司 | Method for adjusting brightness of multiple images |
| CN105981361A (en) * | 2014-02-21 | 2016-09-28 | 皇家飞利浦有限公司 | High definition and high dynamic range capable video decoder |
| US20160292834A1 (en) * | 2014-09-08 | 2016-10-06 | Sony Corporation | Image processing apparatus and image processing method |
| CN106097948A (en) * | 2015-04-29 | 2016-11-09 | 乐金显示有限公司 | Image processing method, image processing circuit and use its display device |
| CN106341635A (en) * | 2016-09-23 | 2017-01-18 | 赵立峰 | Full HD video generating system and method |
| US20170111661A1 (en) * | 2015-10-20 | 2017-04-20 | Intelcorporation | Method and system of video coding with post-processing indication |
| CN106686363A (en) * | 2016-11-01 | 2017-05-17 | 青岛海信电器股份有限公司 | Signal mixed processing method and device in display terminal |
| CN106791865A (en) * | 2017-01-20 | 2017-05-31 | 杭州当虹科技有限公司 | The method of the self adaptation form conversion based on high dynamic range video |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016063475A1 (en) * | 2014-10-24 | 2016-04-28 | パナソニックＩｐマネジメント株式会社 | Transmission method and reproduction device |
| KR102337159B1 (en) * | 2015-05-21 | 2021-12-08 | 삼성전자주식회사 | Apparatus and method for outputting content, and display apparatus |
| AU2016270443B2 (en) * | 2015-06-05 | 2019-01-03 | Apple Inc. | Rendering and displaying high dynamic range content |
| CN107590780B (en) * | 2017-08-09 | 2023-01-20 | 深圳Tcl新技术有限公司 | Image display method, terminal and computer readable storage medium |
-
2017
- 2017-08-09 CN CN201710679863.XA patent/CN107590780B/en active Active
-
2018
- 2018-06-28 WO PCT/CN2018/093474 patent/WO2019029294A1/en active Application Filing
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105393525A (en) * | 2013-07-18 | 2016-03-09 | 皇家飞利浦有限公司 | Methods and apparatuses for creating code mapping functions for encoding an hdr image, and methods and apparatuses for use of such encoded images |
| CN103617792A (en) * | 2013-11-14 | 2014-03-05 | 天津三星电子有限公司 | Method for adjusting image display of display terminal and display terminal |
| CN105981361A (en) * | 2014-02-21 | 2016-09-28 | 皇家飞利浦有限公司 | High definition and high dynamic range capable video decoder |
| US20160292834A1 (en) * | 2014-09-08 | 2016-10-06 | Sony Corporation | Image processing apparatus and image processing method |
| CN106097948A (en) * | 2015-04-29 | 2016-11-09 | 乐金显示有限公司 | Image processing method, image processing circuit and use its display device |
| US20170111661A1 (en) * | 2015-10-20 | 2017-04-20 | Intelcorporation | Method and system of video coding with post-processing indication |
| CN105976325A (en) * | 2016-06-29 | 2016-09-28 | 上海小蚁科技有限公司 | Method for adjusting brightness of multiple images |
| CN106341635A (en) * | 2016-09-23 | 2017-01-18 | 赵立峰 | Full HD video generating system and method |
| CN106686363A (en) * | 2016-11-01 | 2017-05-17 | 青岛海信电器股份有限公司 | Signal mixed processing method and device in display terminal |
| CN106791865A (en) * | 2017-01-20 | 2017-05-31 | 杭州当虹科技有限公司 | The method of the self adaptation form conversion based on high dynamic range video |
Non-Patent Citations (3)
| Title |
|---|
| CAMBODGE BIST等: "Style Aware Tone Expansion for HDR Displays", 《GI "16: PROCEEDINGS OF THE 42ND GRAPHICS INTERFACE CONFERENCE》 * |
| 王亚明: "索尼与HDR制作", 《现代电视技术》 * |
| 王京生: "图像状态及HDR图像", 《演艺科技》 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106686363A (en) * | 2016-11-01 | 2017-05-17 | 青岛海信电器股份有限公司 | Signal mixed processing method and device in display terminal |
| WO2019029294A1 (en) * | 2017-08-09 | 2019-02-14 | 深圳Tcl新技术有限公司 | Image display method, terminal and computer-readable storage medium |
| CN108495108A (en) * | 2018-03-02 | 2018-09-04 | 深圳创维－Rgb电子有限公司 | Image conversion method and device, terminal, storage medium |
| CN108495108B (en) * | 2018-03-02 | 2019-11-05 | 深圳创维－Rgb电子有限公司 | Image conversion method and device, terminal, storage medium |
| CN110415634A (en) * | 2018-04-27 | 2019-11-05 | 苹果公司 | Standard and high dynamic range display system and method for high dynamic range displays |
| CN110415634B (en) * | 2018-04-27 | 2023-01-17 | 苹果公司 | Standard and high dynamic range display systems and methods for high dynamic range displays |
| CN109327734A (en) * | 2018-11-27 | 2019-02-12 | 成都索贝数码科技股份有限公司 | A method of HDR video that surveying light based on dynamic downconverts to SDR video |
| CN109327734B (en) * | 2018-11-27 | 2020-11-13 | 成都索贝数码科技股份有限公司 | Method for down-converting HDR video to SDR video based on dynamic photometry |
| WO2023035943A1 (en) * | 2021-09-10 | 2023-03-16 | 北京字跳网络技术有限公司 | Color card generating method, image processing method, and apparatuses, and readable storage medium |
| CN115393197A (en) * | 2022-10-27 | 2022-11-25 | 摩尔线程智能科技(北京)有限责任公司 | Image synthesis method and device and image processing equipment |
| CN116072059A (en) * | 2023-02-27 | 2023-05-05 | 卡莱特云科技股份有限公司 | Image display method and device, electronic equipment and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019029294A1 (en) | 2019-02-14 |
| CN107590780B (en) | 2023-01-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107590780A (en) | Method for displaying image, terminal and computer-readable recording medium | |
| CN107302663B (en) | Image brightness adjusting method, terminal and computer readable storage medium | |
| CN107608785A (en) | Process management method, mobile terminal and readable storage medium | |
| CN107484034A (en) | Caption presentation method, terminal and computer-readable recording medium | |
| CN108234882B (en) | Image blurring method and mobile terminal | |
| KR102259693B1 (en) | Transparent display apparatus and display method thereof | |
| US11849250B2 (en) | Signal processing device and video display device comprising same | |
| US20160337557A1 (en) | Image de-noising methods and apparatuses using the same | |
| KR20190017303A (en) | Mobile terminal | |
| KR102662951B1 (en) | Signal processing device and image display apparatus including the same | |
| CN108605151B (en) | Methods and apparatus for creating, streaming, and rendering HDR images | |
| US11082614B2 (en) | Display apparatus configured to display an image harmonized with an installation space, and an associated system and recording medium | |
| US20160337628A1 (en) | Methods for generating and employing a camera noise model and apparatuses using the same | |
| KR102549537B1 (en) | Mobile terminal adjusting quality of display, and method thereof | |
| US11128909B2 (en) | Image processing method and device therefor | |
| CN110660365A (en) | Regional backlight control method, display and storage medium | |
| CN106548763A (en) | A kind of method for displaying image and device and terminal | |
| US20170330502A1 (en) | Organic Light Emitting Diode Display Device And Operating Method Thereof | |
| CN114067733B (en) | Display screen correction method, display screen correction device and display chip | |
| CN113347372A (en) | Shooting light supplement method, mobile terminal and readable storage medium | |
| US11962950B2 (en) | HDR film source playing method, device and storage medium | |
| WO2021063135A1 (en) | Saturation enhancement method and device, and computer readable storage medium | |
| CN112383818A (en) | Intelligent television system and intelligent control method thereof | |
| KR102640670B1 (en) | Display device and the control method thereof | |
| US11961206B2 (en) | Image generation using non-linear scaling and tone-mapping based on cubic spline curves |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |