CN109146815A - Picture contrast method of adjustment, device and computer equipment - Google Patents
Picture contrast method of adjustment, device and computer equipment Download PDFInfo
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- CN109146815A CN109146815A CN201810949614.2A CN201810949614A CN109146815A CN 109146815 A CN109146815 A CN 109146815A CN 201810949614 A CN201810949614 A CN 201810949614A CN 109146815 A CN109146815 A CN 109146815A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/90—Dynamic range modification of images or parts thereof
- G06T5/92—Dynamic range modification of images or parts thereof based on global image properties
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/90—Determination of colour characteristics
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- 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
- G06T2207/10—Image acquisition modality
- G06T2207/10024—Color image
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Abstract
This application involves a kind of picture contrast method of adjustment, device, computer equipment and storage mediums.The described method includes: the first picture signal to input carries out color space conversion, the second picture signal is obtained；To the adjustment of the second picture signal degree of comparing and color detection, detection color section is obtained, judges to detect color section whether in preset color section；If so, being corrected to the second picture signal degree of comparing, the second picture signal after contrast correction is subjected to color space conversion, makes it restore to priming color space, obtains third picture signal；Export third picture signal.Distortion caused by after picture contrast adjustment is efficiently solved using this method, so that the image after setting contrast is more natural.
Description
Technical field
This application involves technical field of image processing, more particularly to a kind of picture contrast method of adjustment, device, calculating
Machine equipment and storage medium.
Background technique
Setting contrast is technology relatively conventional in field of image processing.The original of current existing setting contrast technology
Reason is to be adjusted by curve according to the distribution of the average brightness of image frame and histogram distribution, obtain the contrast of picture
It is promoted, stereovision is reinforced.
But the prior art, there are a disadvantage, image biggish for color contrast after enhancing by contrast, can make color
The higher region of brightness value will become brighter, the lower region of chroma-luminance value will become darker, it appears that unnatural to generate sternly
It is distorted again.
Therefore, traditional setting contrast technology there are problems that be easy to causeing distortion.
Summary of the invention
Based on this, it is necessary in view of the above technical problems, provide one kind efficiently solve picture contrast adjustment after make
At distortion, the more natural picture contrast method of adjustment of picture, device, computer equipment after setting contrast and
Storage medium.
A kind of picture contrast method of adjustment, which comprises
Color space conversion is carried out to the first picture signal of input, obtains the second picture signal；
To the adjustment of the second picture signal degree of comparing and color detection, detection color section is obtained, judges to detect color section
Whether in preset color section；
If so, correcting to the second picture signal degree of comparing, the second picture signal after contrast correction is subjected to color
Space conversion, makes it restore to priming color space, obtains third picture signal；
Export third picture signal.
The color space of the first picture signal is RGB color in one of the embodiments, to the first figure of input
Include: to convert the first picture signal to YCbCr color space from RGB color as signal carries out color space conversion, obtains
To the second picture signal.
The step of correcting in one of the embodiments, to the second picture signal degree of comparing includes: setting protection system
Number, corrects the second picture signal degree of comparing according to protection factor.
The first picture signal includes a frame or multiple image in one of the embodiments,.
In one of the embodiments, the method also includes: if it is not, then to the second picture signal carry out color space turn
It changes, makes it restore to priming color space, obtain third picture signal.
A kind of picture contrast adjustment device, described device include:
Color-space conversion module obtains the second image letter for carrying out color space conversion to the first picture signal of input
Number；
Color detection and judgment module, for obtaining detection color to the adjustment of the second picture signal degree of comparing and color detection
Color section judges to detect color section whether in preset color section；
Contrast correction module, for if so, being corrected to the second picture signal degree of comparing, by the after contrast correction
Two picture signals carry out color space conversion, make it restore to priming color space, obtain third picture signal.
Output module, for exporting third picture signal.
A kind of computer equipment, including memory, processor, the memory are stored with computer program, the processing
Device performs the steps of when executing the computer program
Color space conversion is carried out to the first picture signal of input, obtains the second picture signal；
To the adjustment of the second picture signal degree of comparing and color detection, detection color section is obtained, judges to detect color section
Whether in preset color section；
If so, correcting to the second picture signal degree of comparing, the second picture signal after contrast correction is subjected to color
Space conversion, makes it restore to priming color space, obtains third picture signal；
Export third picture signal.
A kind of computer readable storage medium, is stored thereon with computer program, and the computer program is held by processor
It is performed the steps of when row
Color space conversion is carried out to the first picture signal of input, obtains the second picture signal；
To the adjustment of the second picture signal degree of comparing and color detection, detection color section is obtained, judges to detect color section
Whether in preset color section；
If so, correcting to the second picture signal degree of comparing, the second picture signal after contrast correction is subjected to color
Space conversion, makes it restore to priming color space, obtains third picture signal；
Export third picture signal.
Above-mentioned picture contrast method of adjustment, device, computer equipment and storage medium, terminal are sentenced by color detection
Whether the detection color section of disconnected image is in preset color section, to judge that the image is larger with the presence or absence of color contrast
The problem of, if so, being further modified to it after setting contrast, to image fault is modified, effectively
Solves distortion caused by after picture contrast adjustment, so that the image after setting contrast is more natural.
Detailed description of the invention
Fig. 1 is the flow diagram of picture contrast method of adjustment in one embodiment；
Fig. 2 is the flow diagram of picture contrast method of adjustment in another embodiment；
Fig. 3 is the structural block diagram that picture contrast adjusts device in one embodiment；
Fig. 4 is the internal structure chart of computer equipment in one embodiment.
Specific embodiment
It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the application are more clearly understood
The application is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, not
For limiting the application.
Picture contrast method of adjustment provided by the present application, can be applied in terminal.Wherein, terminal can be, but not limited to
It is various personal computers, laptop, mobile phone, tablet computer, vehicle-mounted computer and portable wearable device.
In one embodiment, as shown in Figure 1, providing a kind of picture contrast method of adjustment, it is applied in this way
It is illustrated for above-mentioned terminal, comprising the following steps:
Step 102, color space conversion is carried out to the first picture signal of input, obtains the second picture signal.
Wherein, the first picture signal is picture signal to be processed.In practical applications, picture signal to be processed can be with
But the image for being not limited to the image of user's input or being automatically entered by system or software etc..First picture signal can be
Still image or dynamic image.Wherein, still image can be, but not limited to be jpg format, jpeg format and png format etc., move
State image can be, but not limited to be gif format etc..
When to the adjustment of image degree of comparing corresponding adjustment need to be carried out for specific color space.In the present embodiment,
Terminal converts the priming color space of the first picture signal of input, it is made to be converted into targeted colorspace, acquisition pair
The second picture signal answered.Wherein, targeted colorspace can be used for the adjustment of picture contrast.In the present embodiment, terminal is also
Second picture signal of acquisition is filtered.
Step 104, to the adjustment of the second picture signal degree of comparing and color detection, detection color section, judgement are obtained
Color section is detected whether in preset color section.
The color space of second picture signal is targeted colorspace.In the present embodiment, by the initial of the second picture signal
Contrast is denoted as the first contrast.Specifically, terminal adjusts targeted colorspace, so that the contrast of the second picture signal
It is adjusted.In the present embodiment, contrast adjusted is denoted as the second contrast.Further, terminal believes the second image
Number carry out color detection.Specifically, terminal detects the color space of the second picture signal, obtains the detection color of the second picture signal
Color section.Whether terminal judges the second picture signal in preset color section.Specifically, terminal judges the second picture signal
The numerical value of color space whether fall into preset color section.Wherein, preset color section is color in piece image
The color section of comparison in a certain range can generate biggish figure when adjusting the picture contrast in preset color section
Image distortion, the present embodiment will carry out further contrast correction to such image at this time.
Step 106, if so, being corrected to the second picture signal degree of comparing, by the second image after contrast correction
Signal carries out color space conversion, makes it restore to priming color space, obtains third picture signal.
When the color space numerical value of the second picture signal is fallen in preset color section, terminal is to the second picture signal
Degree of comparing amendment.Wherein, preset color section is certain color space range, setting before being dispatched from the factory by terminal,
It can also be by terminal user's self-setting.Specifically, user is modified targeted colorspace by terminal operation, to weaken step
Rapid 104 setting contrast bring distortion.Further, terminal is empty by the color of the second picture signal after contrast correction
Between conversion to priming color space, obtain third picture signal.In the present embodiment, terminal to obtained third picture signal into
Row filtering processing.
Step 108, third picture signal is exported.
Terminal exports third picture signal.Specifically, terminal exports third picture signal in the form of images, can incite somebody to action
Image is shown on the display screen of terminal, or external equipment of the output extremely with terminal communication connection.
In the picture contrast method of adjustment of the present embodiment, terminal judges the detection color zones of image by color detection
Between whether in preset color section, to judge the image with the presence or absence of the larger problem of color contrast, if so, right
Than being further modified to it after degree adjustment, so that image fault is modified, efficiently solve in picture contrast
Distortion caused by after adjustment, so that the image after setting contrast is more natural.
In one embodiment, the color space of the first picture signal is RGB(Red, Green, Blue, RGB) color
Space, carrying out color space conversion to the first picture signal of input includes: to convert the first picture signal from RGB color
To YCbCr color space, the second picture signal is obtained.
Specifically, terminal converts the first picture signal to YCbCr from RGB color according to formula (1), (2), (3)
Color space:
(1)
(2)
(3)
Wherein, Y is the luminance component of YCbCr color space, and Cb is the chroma blue component of YCbCr color space, Cr YCbCr
The red chrominance component of color space；R is the red chrominance component of RGB color, and G is the green chroma of RGB color
Component, B are the chroma blue component of RGB color.
The targeted colorspace of second picture signal is YCbCr color space made of being converted according to above formula.
Terminal adjusts the second picture signal degree of comparing.Specifically, terminal is adjusted in Y channel degree of comparing.This
In embodiment, the first contrast is the channel the Y input value before adjusting contrast, is denoted as Yin, and the second contrast is adjustment comparison
Y channel value after degree, is denoted as Yout.Terminal carries out color detection in YCbCr color space.Specifically, terminal detection the channel Y,
The value in the channel Cb and the channel Cr.Whether terminal judges targeted colorspace in preset color section.Specifically, terminal according to
Whether the value in the channel Y, the channel Cb and the channel Cr judges the YCbCr color space of the second picture signal in preset color section
It is interior.
Wherein, color section can need diversified selection according to function.In the present embodiment, preset color section is corresponding
For the color section of human skin, referred to as colour of skin section.Mean value (the Cr+ of the colour of skin Cr and Cb of people in YCbCr color space
Cb)/2 and better robustness is presented to illumination in the difference of Cr and Cb, and when the colour of skin changes, the value of (Cr+Cb)/2 begins
It keeps in a certain range eventually, and the value also flat variation in another range for non-colour of skin section (Cr+Cb)/2, simultaneously
(Cr-Cb) value is larger in colour of skin section, and the value of (Cr-Cb) is almost nil in non-colour of skin section.Analysis obtains: if
Cr the and Cb value of one pixel meets formula (4), (5) simultaneously, then is judged as being colour of skin section:
(4)
(5)
When the color of object section of the second picture signal is in preset color section, terminal carries out pair the second picture signal
It is corrected than degree, the second picture signal after contrast correction is subjected to color space conversion, makes it restore to priming color space,
Obtain third picture signal.
Terminal profile protection factor in one of the embodiments, carries out pair the second picture signal according to protection factor
It is corrected than degree.Wherein, the value range of protection factor is [0,1], that is, is greater than or equal to 0 to less than or equal to 1.Terminal is according to guarantor
Shield coefficient, the first contrast and the second contrast are modified the contrast of the second picture signal, obtain revised third
Contrast specifically can be used formula (6) and be modified:
Yout '=(1- α) * Yout+ α * Yin (6)
Wherein, Yin is the first contrast, and Yout is the second contrast, Yout’For third contrast, α is protection factor.
As α=0, Yout '=Yout does not do skin tones protection；
As α=1, Yout '=Yin does not do the adjustment of dynamic contrast；
α value is bigger, and skin tones protection degree is higher, i.e. colour of skin contrast distortion is lower.
Picture contrast entrained by third picture signal is third contrast.Terminal is by the second figure after contrast correction
Picture signal obtains third picture signal from YCbCr color space conversion to RGB color.Further, terminal is by third figure
As the external equipment that signal exports, and the display screen or output that can output this to terminal are communicated to connect as terminal.
In the picture contrast method of adjustment of the present embodiment, terminal is corresponding with RGB color by YCbCr color space
Each channel value calculating, the conversion both obtained, by according to protection factor combination primary contrast and comparison adjusted
The amendment for spending degree of comparing, so that the amendment of contrast is more fine.
In one embodiment, the first picture signal includes a frame or multiple image.As shown in Fig. 2, the present embodiment provides
Picture contrast method of adjustment include:
Step 202, terminal carries out color space conversion to each frame image of the first picture signal of input, obtains the second image letter
Number.
Specifically, each pixel of each frame image of the first picture signal of input is carried out color space conversion by terminal,
Obtain the second picture signal.Wherein, terminal can carry out color space conversion to each frame image according to image frame sequential frame by frame, also
Color space conversion can be carried out to each frame image simultaneously.Terminal can be according to position of the pixel of each frame image in image
Sequence carries out color space conversion to each pixel, can also carry out color space to all pixels point of each frame image simultaneously and turn
It changes.
Step 204, dynamic contrast adjustment and color detection are carried out to the second picture signal, obtain detection color section,
Judge to detect color section whether in preset color section.
Terminal can carry out dynamic contrast adjustment to the second picture signal frame by frame according to the storage order of picture frame, or
Each picture frame is adjusted simultaneously.Terminal can be according to sequence of positions of the pixel of each frame image in image to each pixel
Point carries out setting contrast, can also carry out setting contrast to all pixels point of each frame image simultaneously.Terminal is according to target
Color space carries out color detection to the second picture signal, wherein targeted colorspace is YCbCr color space.Specifically, eventually
End carries out color detection in YCbCr color space, counts the color section of each frame image, and judgement is that each color section of statistics is no
In preset color section.
Step 206, if so, dynamic contrast amendment is carried out to the second picture signal, by second after contrast correction
Picture signal carries out color space conversion, makes it restore to priming color space, obtains third picture signal.
Step 208, third picture signal is exported.
In the picture contrast method of adjustment of the present embodiment, the amendment to the dynamic image degree of comparing of multiframe is provided
Method of adjustment expands the scope of application of the method for the present invention, provides users with the convenient.
In one embodiment, picture contrast method of adjustment further include: if it is not, then carrying out color to the second picture signal
Space conversion, makes it restore to priming color space, obtains third picture signal.
When the second picture signal is not in preset color section, i.e., targeted colorspace is not or not preset color section
When interior, terminal carries out color space conversion to the second picture signal, makes it restore to priming color space, obtains third image letter
Number.I.e. terminal directly adjusts the second image degree of comparing, and does not carry out further contrast correction to it.
In the picture contrast method of adjustment of the present embodiment, when terminal judges according to color detection the detection color zones of image
Between not in preset color section when, i.e., image original color to it is smaller be not unlikely to constitute adjustment contrast after cause compared with
When big distortion, then adjusted contrast is not corrected further, unnecessary amendment operation has been subtracted, so that image pair
It is higher than degree regulated efficiency.
It should be understood that although each step in the flow chart of Fig. 1, Fig. 2 is successively shown according to the instruction of arrow,
It is these steps is not that the inevitable sequence according to arrow instruction successively executes.Unless expressly stating otherwise herein, these steps
There is no stringent sequences to limit for rapid execution, these steps can execute in other order.Moreover, at least one in Fig. 1
Part steps may include that perhaps these sub-steps of multiple stages or stage are not necessarily in synchronization to multiple sub-steps
Completion is executed, but can be executed at different times, the execution sequence in these sub-steps or stage is also not necessarily successively
It carries out, but can be at least part of the sub-step or stage of other steps or other steps in turn or alternately
It executes.
In one embodiment, as shown in figure 3, providing a kind of picture contrast adjustment device, comprising: color space turns
Change the mold block 310, color detection and judgment module 320, contrast correction module 330 and output module, in which:
Color-space conversion module 310 obtains the second image for carrying out color space conversion to the first picture signal of input
Signal；
Color detection and judgment module 320, for being detected to the adjustment of the second picture signal degree of comparing and color detection
Color section judges to detect color section whether in preset color section；
Contrast correction module 330, for if so, being corrected to the second picture signal degree of comparing, after contrast correction
The second picture signal carry out color space conversion, make it restore to priming color space, obtain third picture signal.
Output module 340, for exporting third picture signal.
In one embodiment, the color space of the first picture signal is RGB color, color-space conversion module
310 are also used to from RGB color convert the first picture signal to YCbCr color space, obtain the second picture signal.
In one embodiment, contrast correction module 330 is also used to set protection factor, according to protection factor to second
The amendment of picture signal degree of comparing.
In one embodiment, the first picture signal includes a frame or multiple image.
In one embodiment, contrast correction module 330 is also used to if it is not, then carrying out color sky to the second picture signal
Between convert, make it restore to priming color space, obtain third picture signal.
Specific restriction about picture contrast adjustment device may refer to above for picture contrast method of adjustment
Restriction, details are not described herein.Modules in above-mentioned picture contrast adjustment device can be fully or partially through software, hard
Part and combinations thereof is realized.Above-mentioned each module can be embedded in the form of hardware or independently of in the processor in computer equipment,
It can also be stored in a software form in the memory in computer equipment, execute the above modules in order to which processor calls
Corresponding operation.
In one embodiment, a kind of computer equipment is provided, which can be terminal, internal structure
Figure can be as shown in Figure 3.The computer equipment includes processor, the memory, network interface, display connected by system bus
Screen and input unit.Wherein, the processor of the computer equipment is for providing calculating and control ability.The computer equipment is deposited
Reservoir includes non-volatile memory medium, built-in storage.The non-volatile memory medium is stored with operating system and computer journey
Sequence.The built-in storage provides environment for the operation of operating system and computer program in non-volatile memory medium.The calculating
The network interface of machine equipment is used to communicate with external terminal by network connection.When the computer program is executed by processor with
Realize a kind of picture contrast method of adjustment.The display screen of the computer equipment can be liquid crystal display or electric ink is aobvious
Display screen, the input unit of the computer equipment can be the touch layer covered on display screen, be also possible to computer equipment shell
Key, trace ball or the Trackpad of upper setting can also be external keyboard, Trackpad or mouse etc..
It will be understood by those skilled in the art that structure shown in Fig. 3, only part relevant to application scheme is tied
The block diagram of structure does not constitute the restriction for the computer equipment being applied thereon to application scheme, specific computer equipment
It may include perhaps combining certain components or with different component layouts than more or fewer components as shown in the figure.
In one embodiment, a kind of computer equipment, including memory and processor are provided, is stored in memory
Computer program, the processor perform the steps of when executing computer program
Color space conversion is carried out to the first picture signal of input, obtains the second picture signal；
To the adjustment of the second picture signal degree of comparing and color detection, detection color section is obtained, judges to detect color section
Whether in preset color section；
If so, correcting to the second picture signal degree of comparing, the second picture signal after contrast correction is subjected to color
Space conversion, makes it restore to priming color space, obtains third picture signal；
Export third picture signal.
In one embodiment, the color space of the first picture signal is RGB color, is believed the first image of input
Number carrying out color space conversion includes: to convert the first picture signal to YCbCr color space from RGB color, obtains the
Two picture signals.
In one embodiment, the step of correcting to the second picture signal degree of comparing includes: setting protection factor, root
The second picture signal degree of comparing is corrected according to protection factor.
In one embodiment, the first picture signal includes a frame or multiple image.
In one embodiment, it also performs the steps of when which executes computer program if it is not, then to the second figure
As signal progress color space conversion, priming color space is made it restore to, third picture signal is obtained.
In one embodiment, a kind of computer readable storage medium is provided, computer program is stored thereon with, is calculated
Machine program performs the steps of when being executed by processor
Color space conversion is carried out to the first picture signal of input, obtains the second picture signal；
To the adjustment of the second picture signal degree of comparing and color detection, detection color section is obtained, judges to detect color section
Whether in preset color section；
If so, correcting to the second picture signal degree of comparing, the second picture signal after contrast correction is subjected to color
Space conversion, makes it restore to priming color space, obtains third picture signal；
Export third picture signal.
In one embodiment, the color space of the first picture signal is RGB color, is believed the first image of input
Number carrying out color space conversion includes: to convert the first picture signal to YCbCr color space from RGB color, obtains the
Two picture signals.
In one embodiment, the step of correcting to the second picture signal degree of comparing includes: setting protection factor, root
The second picture signal degree of comparing is corrected according to protection factor.
In one embodiment, the first picture signal includes a frame or multiple image.
In one embodiment, it is also performed the steps of when computer program is executed by processor if it is not, then to the second figure
As signal progress color space conversion, priming color space is made it restore to, third picture signal is obtained.
Those of ordinary skill in the art will appreciate that realizing all or part of the process in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, the computer program can be stored in a non-volatile computer
In read/write memory medium, the computer program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein,
To any reference of memory, storage, database or other media used in each embodiment provided herein,
Including non-volatile and/or volatile memory.Nonvolatile memory may include read-only memory (ROM), programming ROM
(PROM), electrically programmable ROM(EPROM), electrically erasable ROM(EEPROM) or flash memory.Volatile memory may include
Random-access memory (ram) or external cache.By way of illustration and not limitation, RAM is available in many forms,
Such as static state RAM(SRAM), dynamic ram (DRAM), synchronous dram (SDRAM), double data rate sdram (DDRSDRAM), enhancing
Type SDRAM(ESDRAM), synchronization link (Synchlink) DRAM(SLDRAM), memory bus (Rambus) direct RAM
(RDRAM), direct memory bus dynamic ram (DRDRAM) and memory bus dynamic ram (RDRAM) etc..
Each technical characteristic of above embodiments can be combined arbitrarily, for simplicity of description, not to above-described embodiment
In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance
Shield all should be considered as described in this specification.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the concept of this application, various modifications and improvements can be made, these belong to the protection of the application
Range.Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (10)
1. a kind of picture contrast method of adjustment, which comprises
Color space conversion is carried out to the first picture signal of input, obtains the second picture signal；
To the adjustment of the second picture signal degree of comparing and color detection, detection color section is obtained, judges the detection color
Whether section is in preset color section；
If so, correcting to the second picture signal degree of comparing, the second picture signal after contrast correction is subjected to color
Space conversion, makes it restore to priming color space, obtains third picture signal；
Export third picture signal.
2. the method according to claim 1, wherein the color space of the first image signal is RGB color
Space, the first picture signal of described pair of input carry out color space conversion and include:
The first image signal is converted from RGB color to YCbCr color space, the second picture signal is obtained.
3. the method according to claim 1, wherein described to the second modified step of picture signal degree of comparing
Suddenly include:
Protection factor is set, the second picture signal degree of comparing is corrected according to protection factor.
4. the method according to claim 1, wherein the first image signal includes a frame or multiple image.
5. the method according to claim 1, wherein the method also includes:
If it is not, then carrying out color space conversion to the second picture signal, priming color space is made it restore to, obtains third image
Signal.
6. a kind of picture contrast adjusts device, which is characterized in that described device includes:
Color-space conversion module obtains the second image letter for carrying out color space conversion to the first picture signal of input
Number；
Color detection and judgment module, for obtaining detection color to the adjustment of the second picture signal degree of comparing and color detection
Whether color section judges the detection color section in preset color section；
Contrast correction module, for if so, being corrected to the second picture signal degree of comparing, by the after contrast correction
Two picture signals carry out color space conversion, make it restore to priming color space, obtain third picture signal；
Output module, for exporting third picture signal.
7. device according to claim 6, which is characterized in that the color space of the first image signal is RGB color
Space, the color-space conversion module are also used to from RGB color convert the first image signal to YCbCr color
Space obtains the second picture signal.
8. device according to claim 6, which is characterized in that the contrast correction module is also used to set protection system
Number, corrects the second picture signal degree of comparing according to protection factor.
9. a kind of computer equipment, including memory and processor, the memory are stored with computer program, feature exists
In the step of processor realizes any one of claims 1 to 5 the method when executing the computer program.
10. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer program
The step of method described in any one of claims 1 to 5 is realized when being executed by processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810949614.2A CN109146815B (en) | 2018-08-20 | 2018-08-20 | Image contrast adjusting method and device and computer equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810949614.2A CN109146815B (en) | 2018-08-20 | 2018-08-20 | Image contrast adjusting method and device and computer equipment |
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| CN109146815A true CN109146815A (en) | 2019-01-04 |
| CN109146815B CN109146815B (en) | 2022-08-30 |
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