CN106981277B - The method of adjustment of tone for display, apparatus and system - Google Patents
The method of adjustment of tone for display, apparatus and system Download PDFInfo
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- CN106981277B CN106981277B CN201610032618.5A CN201610032618A CN106981277B CN 106981277 B CN106981277 B CN 106981277B CN 201610032618 A CN201610032618 A CN 201610032618A CN 106981277 B CN106981277 B CN 106981277B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
- G09G3/3413—Details of control of colour illumination sources
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
- G09G5/06—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed using colour palettes, e.g. look-up tables
Abstract
The present invention is the method for adjustment of the tone for display, apparatus and system, belongs to color image processing field.This method comprises: providing the picture element signal of primary color space；Picture element signal is converted, the initial hue value of corresponding pixel is obtained；The tone range for comparing initial hue value and preset color to be regulated, judges whether the pixel needs tone to adjust；It is adjusted if necessary to tone, tone value, the regulated value of preset color to be regulated and its tone value of adjacent color and preset regulated value of corresponding color to be regulated is selected according to initial hue value；According to initial hue value, the tone value of color to be regulated, the regulated value of preset color to be regulated and its tone value of adjacent color and preset regulated value, the hue adjustment value of the pixel is obtained；The root hue adjustment value according to pixel, obtains the color space signal after the pixel is adjusted.The present invention can receive the regulated value of multiple colors to be regulated simultaneously, and panel tone is adjusted.
Description
Technical field
This disclosure relates to color image processing more particularly to a kind of method of adjustment of the tone for display, dress
It sets and system.
Background technique
Tone (H), saturation degree (S), lightness (V) form HSV system, are one of color in common use systems.Wherein H represents Hue,
S represents Saturation, and V represents Value.Tone is one of the color three elements for influencing display system perception, in display system
In, can present nature, it is true to nature, make the comfortable picture tone of observer be to show the important measurement standard of quality.
For general display system when adjusting tone, usually using the tone of unified regulated value adjustment image, this is for LCD
Show perhaps available ideal display effect, but for OLED display system, traditional tone adjusting method is single,
Lack flexibility.
Therefore, it is necessary to a kind of methods of adjustment of new tone for display, apparatus and system.
Above- mentioned information are only used for reinforcing the understanding to the background of the disclosure, therefore it disclosed in the background technology part
It may include the information not constituted to the prior art known to persons of ordinary skill in the art.
Summary of the invention
The disclosure provides a kind of method of adjustment of tone for display, apparatus and system, can to panel tone into
Row is separately adjustable.
Other characteristics and advantages of the disclosure will be apparent from by the following detailed description, or partially by the disclosure
Practice and acquistion.
According to the one side of the disclosure, a kind of method of adjustment of tone for display is provided, comprising: provide initial color
The picture element signal of color space；The picture element signal is converted, the initial color of pixel corresponding with the picture element signal is obtained
Tone pitch；The tone range for comparing the initial hue value and preset color to be regulated, judges whether the pixel needs to carry out
Tone is adjusted；It is corresponding described to be regulated according to initial hue value selection if the pixel needs to carry out tone adjusting
The tone value and preset regulated value of the tone value of color, the regulated value of preset color to be regulated and its adjacent color；And
According to the initial hue value, the tone value of color to be regulated, the regulated value of preset color to be regulated and its adjacent color
Tone value and preset regulated value obtain the hue adjustment value of the pixel；According to the hue adjustment value of the pixel, institute is obtained
State color space signal of the pixel after hue adjustment.
According to an embodiment of the disclosure, further includes: if the pixel does not need to carry out tone adjusting, directly
Initial color space signal to the display for exporting the pixel is shown.
According to an embodiment of the disclosure, wherein the color space is RGB.
According to an embodiment of the disclosure, wherein the display is OLED display.
According to an embodiment of the disclosure, wherein the value range of the initial hue value is [0 °, 360 °].
According to an embodiment of the disclosure, wherein the regulated value range of the preset color to be regulated be [- 30 °,
30°]。
According to an embodiment of the disclosure, wherein the tone range of the preset color to be regulated be (H0, H1 ...,
Hn-1, Hn), tone range is less than or equal to the value range of the initial hue value, and wherein each identifier is distinguished
A kind of corresponding color to be regulated, and there is its respective tone range.
According to an embodiment of the disclosure, wherein the tone range according to preset color to be regulated and it is described just
Beginning tone value, judging whether the pixel needs the step of carrying out tone adjusting includes: the initial hue value for judging the pixel
Whether the tone range of the preset to be regulated color is fallen into；If fallen into the tone range, it is determined that the pixel
It needs to carry out tone adjusting；If not in the tone range, it is determined that the pixel does not need to carry out tone adjusting.
According to an embodiment of the disclosure, wherein selecting the corresponding color to be regulated according to the initial hue value
Tone value, the regulated value of preset color to be regulated and its tone value of adjacent color and preset regulated value the step of wrap
It includes: when the initial hue value of the pixel falls into the tone range of the corresponding color to be regulated, selecting described to be regulated
The tone value and preset regulated value of one of color is counterclockwise adjacent color.
According to an embodiment of the disclosure, wherein according to the tone value of the color to be regulated, preset face to be regulated
The regulated value of color and its tone value of adjacent color and preset regulated value, the hue adjustment value for obtaining the pixel includes: pair
The initial hue value, the tone value of color to be regulated, the regulated value of preset color to be regulated and its tone of adjacent color
Value and preset regulated value carry out one-line interpolation processing.
According to the another aspect of the embodiment of the present disclosure, a kind of adjustment device of tone for display is provided, comprising: color
Conversion circuit is adjusted, for converting the picture element signal of received primary color space, is obtained opposite with the picture element signal
Answer the initial hue value of pixel；Tone decision circuitry, for comparing the color of the initial hue value and preset color to be regulated
Range is adjusted, judges whether the pixel needs to carry out tone adjusting；And hue adjust circuit, for when the pixel need into
When row tone is adjusted, the tone value, preset to be regulated of the corresponding color to be regulated is selected according to the initial hue value
The regulated value of color and its tone value of adjacent color and preset regulated value, and according to the initial hue value, face to be regulated
The tone value and preset regulated value of the tone value of color, the regulated value of preset color to be regulated and its adjacent color obtain institute
The hue adjustment value of pixel is stated, and according to the hue adjustment value of the pixel, obtains color of the pixel after hue adjustment
Color space signal.
According to an embodiment of the disclosure, when the tone decision circuitry judges that the pixel does not need to carry out tone tune
When section, then initial color space signal to the display for directly exporting the pixel is shown.
According to an embodiment of the disclosure, wherein the color space is RGB.
According to an embodiment of the disclosure, wherein the display is OLED display.
According to an embodiment of the disclosure, wherein the tone conversion circuit includes times add, subtract, in multiplication and division logic
Meaning combination.
It is described to be operated except logic using the first lookup table circuit according to an embodiment of the disclosure.
According to an embodiment of the disclosure, wherein the hue adjust circuit includes linear interpolation circuit, it is used for pair
The initial hue value, the tone value of color to be regulated, the regulated value of preset color to be regulated and its tone of adjacent color
Value and preset regulated value carry out one-line interpolation processing.
It is used for according to an embodiment of the disclosure wherein the hue adjust circuit further includes the second lookup table circuit
The sine and cosine value of the hue adjustment value of the pixel is calculated, and the pixel is obtained through overtone according to the sine and cosine value
Color space signal adjusted.
According to the embodiment of the present disclosure in another aspect, providing a kind of system for adjusting display tone, comprising: display screen
Curtain, is used for the display using color space；System processor, for initial picture element signal to be sent to display driver
Circuit；Display driving circuit, including: processor interface logic is used to provide the described system processor and the display
Interface between drive circuit；Any of the above-described adjustment device；And screen drive, for controlling the display screen
And the display screen will be sent to by the color space signal of hue adjustment with the pixel.The wherein display driver
Circuit passes through the screen by the electrical connection of system processor described in the processor interface logical AND, the display driving circuit
Curtain driver is electrically connected with the display screen, and the adjustment device drives with the processor interface logic and the screen respectively
Dynamic device electrical connection.
According to the method for adjustment of the tone for display of the disclosure, apparatus and system, sentenced by tone conversion, tone
Disconnected and hue adjustment can receive the tone of the independent adjustment image of regulated value of one or more tone simultaneously.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
The disclosure can be limited.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets implementation of the invention
Example, and be used to explain the principle of the present invention together with specification.
Fig. 1 schematically shows the process of the method for adjustment of the tone for display according to disclosure example embodiment
Figure；
Fig. 2 schematically shows the process of the method for adjustment of the tone for display according to disclosure example embodiment
Figure；
Fig. 3 schematically shows the frame of the adjustment device according to the tone for display of disclosure example embodiment
Figure；
Fig. 4 schematically shows the frame of the adjustment device according to the tone for display of disclosure example embodiment
Figure；
Fig. 5 schematically shows the block diagram of the one-line interpolation circuit according to Fig. 4；
Fig. 6 schematically shows the block diagram of the system of the adjustment display tone according to disclosure example embodiment.
Specific embodiment
Example embodiment is described more fully with reference to the drawings.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to example set forth herein；On the contrary, thesing embodiments are provided so that the disclosure will more
Fully and completely, and by the design of example embodiment comprehensively it is communicated to those skilled in the art.Attached drawing is only the disclosure
Schematic illustrations, be not necessarily drawn to scale.Identical appended drawing reference indicates same or similar part in figure, thus
Repetition thereof will be omitted.
In addition, described feature, structure or characteristic can be incorporated in one or more implementations in any suitable manner
In mode.In the following description, many details are provided to provide and fully understand to embodiment of the present disclosure.So
And it will be appreciated by persons skilled in the art that one in the specific detail can be omitted with technical solution of the disclosure
Or more, or can be using other methods, constituent element, device, step etc..In other cases, it is not shown in detail or describes
Known features, method, apparatus, realization, material or operation are to avoid a presumptuous guest usurps the role of the host and all aspects of this disclosure is made to become mould
Paste.
Some block diagrams shown in the drawings are functional entitys, not necessarily must be with physically or logically independent entity phase
It is corresponding.These functional entitys can be realized using software form, or in one or more hardware modules or integrated circuit in fact
These existing functional entitys, or these functions reality is realized in heterogeneous networks and/or processor device and/or microcontroller device
Body.
Embodiment described in following exemplary embodiment does not represent all embodiment party consistented with the present invention
Formula.On the contrary, they are only consistent with some aspects of the invention as detailed in the appended claims device and side
The example of method.
Fig. 1 schematically shows the process of the method for adjustment of the tone for display according to disclosure example embodiment
Figure.
As shown in Figure 1, providing the picture element signal of primary color space in step S110.
In exemplary embodiment, wherein the color space is RGB.
In step S120, the picture element signal is converted, obtains the initial of pixel corresponding with the picture element signal
Tone value.
In exemplary embodiment, wherein the value range of the initial hue value is [0 °, 360 °].
In step S130, the tone range of the initial hue value and preset color to be regulated is compared, judges the picture
Whether element needs to carry out tone adjusting.
In exemplary embodiment, wherein the tone range of the preset color to be regulated be (H0, H1 ..., Hn-1,
Hn), tone range is less than or equal to the value range of the initial hue value, and wherein each identifier respectively corresponds one
Kind color to be regulated, and there is its respective tone range.
In exemplary embodiment, wherein the tone range according to preset color to be regulated and the initial hue
Value, judging whether the pixel needs the step of carrying out tone adjusting includes: to judge whether the initial hue value of the pixel falls
Enter the tone range of the preset color to be regulated；If fallen into the tone range, it is determined that the pixel need into
Row tone is adjusted；If not in the tone range, it is determined that the pixel does not need to carry out tone adjusting.
In step S140, if the pixel needs to carry out tone adjusting, selected according to the initial hue value corresponding
The tone value and preset tune of the tone value of the color to be regulated, the regulated value of preset color to be regulated and its adjacent color
Section value.
In exemplary embodiment, wherein selecting the tone of the corresponding color to be regulated according to the initial hue value
The step of tone value and preset regulated value of value, the regulated value of preset color to be regulated and its adjacent color includes: to work as institute
When stating the initial hue value of pixel and falling into the tone range of the corresponding color to be regulated, the one of the color to be regulated is selected
The tone value and preset regulated value of a adjacent color counterclockwise.
In exemplary embodiment, wherein the regulated value range of the preset color to be regulated is [- 30 °, 30 °].
In exemplary embodiment, further includes: if the pixel does not need to carry out tone adjusting, directly described in output
The initial color space signal of pixel to the display is shown.
The tone of adjusting digital picture is usually required, to be applicable in the display system for showing the digital picture.If no
Any adjusting is carried out, the viewer of digital picture will be uncomfortable to shown color sensation.Embodiment of the disclosure can answer
For such as colorful ultra-twist nematic (CSTN), thin film transistor (TFT) (TFT), Organic Light Emitting Diode (OLED) or the double-deck super torsion
Any type of display of Qu Xianglie (DSTN) display.
In exemplary embodiment, wherein the display is OLED display.
In step S150, according to the initial hue value, the tone value of color to be regulated, preset color to be regulated tune
The tone value and preset regulated value of section value and its adjacent color, obtain the hue adjustment value of the pixel.
In exemplary embodiment, wherein according to the tone value of the color to be regulated, the adjusting of preset color to be regulated
The tone value and preset regulated value of value and its adjacent color, the hue adjustment value for obtaining the pixel includes: to described initial
Tone value, the tone value of color to be regulated, the regulated value of preset color to be regulated and its tone value of adjacent color and default
Regulated value carry out one-line interpolation processing.
Color of the pixel after hue adjustment is obtained according to the hue adjustment value of the pixel in step S160
Spacing wave.
For example, to R (red), G (green), three kinds of colors of B (blue) (these three colors be for exemplary illustration,
The type for the color that can actually be adjusted can be set and be divided according to actual needs by system) tone adjusting is carried out,
Three regulated values can be received simultaneously, and (including angular dimension, direction) is adjusted to R, G, B respectively.It is aobvious relative to existing LCD
Show the unified regulated value in system, the disclosure can receive three or the regulated value of multiple " independences " carries out tone adjusting, energy
Free adjusting is carried out to one or more tone simultaneously.
Disclosure mode provides a kind of method of adjustment of tone for display, can receive multiple face to be regulated simultaneously
The regulated value of color makes the maximum for obtaining vision-control with the setting of each color oneself come individually adjusted
Applicability.It can be adapted in a variety of display systems such as OLED, LCD, LED simultaneously.
Fig. 2 schematically shows the process of the method for adjustment of the tone for display according to disclosure example embodiment
Figure.
As shown in Fig. 2, the picture element signal of primary color space is converted in step S210, obtain corresponding pixel
Initial hue value.
Do you in step S220, judge that the initial hue value of the pixel falls into the tone range of preset color to be regulated?
If fallen into the tone range of the preset color to be regulated, enter in next step；Conversely, jumping to step S260.
In step S230, determine that the pixel needs to carry out tone adjusting, it is corresponding to be regulated according to the selection of initial hue value
The tone value of color, the tone value of the regulated value of preset color to be regulated and adjacent color counterclockwise and preset adjusting
Value.
In step S240, to the tone value of initial hue value, color to be regulated, the regulated value of preset color to be regulated and
The tone value and preset regulated value of this is counterclockwise adjacent color carry out one-line interpolation processing, obtain the hue adjustment of pixel
Value.
Color space signal of the pixel after hue adjustment is obtained according to the hue adjustment value of pixel in step S250,
And it is sent to display and shows.
In step S260, determine that the pixel does not need to carry out tone adjusting, the initial color for directly exporting the pixel is empty
Between signal to display show.
In exemplary embodiment, the display is OLED display.Because the colour gamut ratio LCD of OLED is wide, colour gamut is extensively shown
Show that the color that device is shown is more gorgeous, abundant, if but easily cause viewing discomfort without adjusting, it is adjusted in existing LCD display
The method that the unified regulated value adjustment image an of tone can only be received when tone lacks flexibility when adjusting OLED display,
The characteristics of can not adapting to OLED.
Colour gamut in the disclosure is extensively defined as follows: international standard is that color coverage rate can reach NTSC (National
Television Standards Committee, (U.S.) National Television Standards Committee) 92% be wide colour gamut, this public affairs
The colour gamut opened, which is extensively defined for common LCD, to be compared, and the wide of the colour gamut than common LCD can be the colour gamut in the disclosure
Wide display, and the colour gamut of OLED is than its " wide ".At present with sRGB (standard Red GreenBlue, general color standard)
Colour gamut coverage area be reference, OLED often exceeds this range.
Fig. 3 schematically shows the frame of the adjustment device according to the tone for display of disclosure example embodiment
Figure.
As shown in figure 3, the device includes: tone conversion circuit 310, for believing the pixel of received primary color space
It number is converted, obtains the initial hue value of pixel corresponding with the picture element signal；Tone decision circuitry 320, for comparing
The tone range of the initial hue value and preset color to be regulated, judges whether the pixel needs to carry out tone adjusting；
Hue adjust circuit 330, for being selected according to the initial hue value corresponding when the pixel needs to carry out tone adjusting
The tone value and preset tune of the tone value of the color to be regulated, the regulated value of preset color to be regulated and its adjacent color
Section value, and according to the initial hue value, the tone value of color to be regulated, the regulated value of preset color to be regulated and its adjacent
The tone value of color and preset regulated value obtain the hue adjustment value of the pixel, and according to the hue adjustment of the pixel
Value, obtains color space signal of the pixel after hue adjustment.
In exemplary embodiment, wherein the tone conversion circuit 310 is including adding, subtracting, any group in multiplication and division logic
It closes.
For example, in the operation of tone conversion circuit 310 conversion of rgb space to HUE can be implemented according to following equation:
It is, of course, also possible to realized using other conversion logics, such as:
As max (RGB)=min (RGB), then HUE=undefined；
As max (RGB)=R and G >=B, then
As max (RGB)=R and G >=B, then
As max (RGB)=R and G < B, then
As max (RGB)=G, then
As max (RGB)=B, then
Max (RGB), min (RGB) in above formula represent the maxima and minima in current pixel RGB three-component.
It is described to be operated except logic using the first lookup table circuit in exemplary embodiment.
The time is calculated to save, the division calculation in the tone conversion circuit 310 is tabled look-up (Look using described first
Up Table, LUT) circuit operation.Here 20 power that precision suggestion of tabling look-up is 2.
In exemplary embodiment, the tone decision circuitry 320, according to the tone range of the preset color to be regulated
I.e. preset adjustment target, such as red (H0), yellow (H1), green (H2), cyan (H3), blue (H4) ... etc. sentence
Whether the tone of the disconnected current pixel obtained by the tone conversion circuit 310 is in the tone range of color to be regulated.Such as
Fruit is to be judged as the tone of current pixel to belong to any tone to be regulated (Hx), and be sent into the hue adjust circuit 330.
If it is not, then not doing any processing, direct output system to the current pixel.
In exemplary embodiment, when the tone decision circuitry 320 judges that the pixel does not need to carry out tone adjusting,
Initial color space signal to the display for then directly exporting the pixel is shown.
In exemplary embodiment, wherein the color space is RGB.
In exemplary embodiment, wherein the display is OLED display.
In exemplary embodiment, wherein the hue adjust circuit 330 includes linear interpolation circuit, it is used for described first
Beginning tone value, the tone value of color to be regulated, the regulated value of preset color to be regulated and its tone value of adjacent color and pre-
If regulated value carry out one-line interpolation processing.
It is used to calculate institute wherein the hue adjust circuit 330 further includes the second lookup table circuit in exemplary embodiment
The sine and cosine value of the hue adjustment value of pixel is stated, and the pixel is obtained after hue adjustment according to the sine and cosine value
Color space signal.
The disclosure provides a kind of adjustment device of tone for display, which includes tone conversion circuit, tone
Decision circuitry and hue adjust circuit can receive the tone of the regulated value adjustment image of multiple colors to be regulated simultaneously, adjust
Flexibly, it realizes simple.
Fig. 4 schematically shows the frame of the adjustment device according to the tone for display of disclosure example embodiment
Figure.
As shown in figure 4, the device includes: tone conversion circuit 410, for believing the pixel of received primary color space
Number (RGB) is converted, and the initial hue value of pixel corresponding with the picture element signal is obtained；Tone decision circuitry 420, is used for
The tone range for comparing the initial hue value and preset color to be regulated, judges whether the pixel needs to carry out tone tune
Section；Hue adjust circuit 430, for selecting phase according to the initial hue value when the pixel needs to carry out tone adjusting
The tone value for the color to be regulated answered, the tone value of the regulated value of preset color to be regulated and its adjacent color and default
Regulated value, and according to the initial hue value, the tone value of color to be regulated, preset color to be regulated regulated value and its
The tone value of adjacent color and preset regulated value obtain the hue adjustment value of the pixel, and according to the tone of the pixel
Adjusted value obtains color space signal (R ' G ' B ') of the pixel after hue adjustment, and is sent to OLED display
440.And when the tone decision circuitry 420 judges that the current pixel does not need to carry out tone adjusting, directly output RGB believes
Number to the OLED display 440.
System receives the picture element signal that format is RGB and obtains the tone of the pixel by the tone conversion circuit 410
Value HUE is then sent into the tone decision circuitry 420, according to the tone range of the preset color to be regulated (H0,
H1 ..., Hn-1, Hn), such as red, green, blue, yellow ... etc., judge whether current pixel belongs to tone to be adjusted, such as
Fruit judgement is that the pixel is admitted to the hue adjust circuit 430, according to preset regulated value (H0_set, the H1_
Set ..., Hn-1_set, Hn_set), carry out hue adjustment, R ' G ' B ' after being adjusted transmitting system afterwards.If it is determined that it is no,
Then the pixel with no treatment, is directly sent out.
Wherein H0, H1 ..., Hn-1, Hn respectively represent the tone to be regulated of different colours, and H0, H1 ..., Hn-1's, Hn takes
Value is section, and the tone generally adjusted as needed is chosen.H0_set, H1_set ..., Hn-1_set, Hn_set are pair
The regulated value (regulated quantity) answered.Even if identical regulated value is arranged in H1_set ..., Hn-1_set, Hn_set to H0_set,
The tone for carrying out same amplitude to different colours is represented to adjust.The disclosure can receive the tone regulated value of different colours simultaneously,
The tone of different colours is adjusted with realizing.
Wherein the value of the initial hue value HUE is between 0 to 360, unit degree of being (°).
Realize that pixel to the conversion of tone, obtains the initial color of the pixel after conversion according to the tone conversion circuit 410
Tone pitch HUE, the tone range H0, H1 ..., Hn-1 with the preset color to be regulated, Hn are compared and (are shown in Table 1).Such as
The tone of certain pixel is 30 °, should belong to red, because 30 °>0 ° and 30 °<60 °, and red exactly preset needs to carry out tone tune
The color of section then recalculates the initial hue value HUE of the pixel.
| Red (H0) | 0≤HUE < 60 |
| Yellow (H1) | 60≤HUE < 120 |
| Green (H2) | 120≤HUE < 180 |
| Cyan (H3) | 180≤HUE < 240 |
| Blue (H4) | 240≤HUE < 300 |
Table 1: the tone range distribution of preset color to be regulated
Wherein the range of HUE is 0 to 360 degree, and the tone range of the color to be regulated in table 1 is 0-300 degree, is illustrated such as
The value of fruit HUE is between 300 to 360 degree ranges, just illustrates that the tone of the pixel is not at the preset color to be regulated
Tone range in, directly export original rgb value.
Here 0-300 degree is to can according to need optional one between range, such as 50-200 etc., and being can
With." red " delimited between 0 °~60 ° in table 1, and actually the range contains orange (30 °~60 °), if actual needs
It is adjusted to orange, can further segment the tone range of color to be regulated.Likewise, if certain pixel belong to it is newly-increased
Color to be regulated is adjusted using tone of the same method to the adjusting color.
The tone range distribution division of color to be regulated is thinner, and adjustable tone is more, and resource shared by certain circuit is just
Bigger, specific implementation needs to consider actual demand.
In exemplary embodiment, the color of the regulated value of the preset color to be regulated and the preset color to be regulated
It is the relationship of regulated quantity and point of adjustment between tune.
For example, the preset color to be regulated is red, green, blue etc., the tune of the preset color to be regulated
Between section value suggestion value [- 30,30], unit degree of being (°).For another example the tone to color red to be regulated is needed to adjust
Section, presetting red tone regulated value is 10 °.
In exemplary embodiment, the hue adjust circuit 430 includes linear interpolation circuit 431 and the second lookup table circuit
432。
Fig. 5 schematically shows the block diagram of the one-line interpolation circuit according to Fig. 4.
Into after the hue adjust circuit 430, the regulated value of the preset color to be regulated is selected according to Hx first
Such as H0_set, while choosing the tone regulated value adjacent with the color to be regulated.For example, current pixel belong to red (H0) to
The tone range of color is adjusted, therefore chooses tone the regulated value H0_set and H1_ to be regulated of red (H0) and yellow (H1)
Set is sent into the linear interpolation circuit 431 and carries out interpolation.The linear interpolation circuit 431 is common interpolating logic circuit,
This is not described in detail.
In exemplary embodiment, adjacent tone regulated value can only select one, and direction is adjacent counterclockwise.
For example, it is assumed that H0, H1, HUE are respectively the initial hue of the preset red, tone value of yellow and current pixel
Value, H0_set, H1_set are respectively preset red, yellow tone regulated value.Implement currently when operation according to following equation
The calculating of the hue adjustment value of pixel.
The present embodiment is realized based on circuit hardware, uses one-dimensional interpolation from computation complexity, circuit volume cost consideration, together
When also meet regulating effect.One-line interpolation circuit counting is simple, and interpolation is brought during can effectively eliminate hue adjustment
Tone between transition unevenness problem.
Then the hue adjustment value (HUE_set) of the current pixel of acquisition is sent into second lookup table circuit 432.Due to
Sin cos functions have periodically, same in operation to implement sine and cosine value using (Look Up Table, LUT) circuit of tabling look-up
It calculates.Here precision of tabling look-up suggests 2 10 power.
The rgb value of current pixel is finally adjusted according to following equation.Wherein R ' G ' B ' is respectively after hue adjustment
Color three-component.
The wherein following equation of the variable-definition:
Here the multiple tone regulated values of reception refer to that the regulated value for setting tone to be regulated according to demand is (green as red
Color, blue need to adjust, and the regulated value is respectively set).And " while choosing the tone adjacent with the tonal color to be regulated and adjusting
Value " is then specific calculating process.
Disclosure mode provides a kind of adjustment device of tone for display, can receive multiple tones simultaneously and adjust
Value carries out independent adjusting to the tone of color to be regulated.Tone adjusting can be directly carried out in rgb space to image, is adjusted
It is high to save freedom degree；And operation time is reduced by using lookup table circuit and one-line interpolation circuit, adjust simple, operation time
Fastly.Meanwhile Gu being related to algorithm part can be integrated in FPGA and/or ASIC with the soft core/stone/core of separately made IP, tool
The advantages of being easily integrated.
Fig. 6 schematically shows the block diagram of the system of the adjustment display tone according to disclosure example embodiment.
As shown in fig. 6, the system includes: display screen 610, it to be used for the display using color space RGB；At system
Device 620 is managed, for initial picture element signal to be sent to display driving circuit 630；Display driving circuit 630, wherein wrapping
Include: processor interface logic 631 is used to provide the described connecing between system processor 620 and the display driving circuit 630
Mouthful；Any of the above-described adjustment device 632；Screen drive 633, for controlling the display screen 610 and will be with the picture
The color space signal by hue adjustment of element is sent to the display screen 610.The wherein display driving circuit 630
It is electrically connected by the processor interface logic 631 with the system processor 620, the display driving circuit 630 passes through
The screen drive 633 is electrically connected with the display screen 610, the adjustment device 632 respectively with the processor interface
Logic 631 and the screen drive 633 are electrically connected.
The system processor 620 is that particular display such as OLED sets the colors to be regulated such as red, green and blue
Tone adjust register.
It should be appreciated that the execution that used mathematical operation can be very fast by the simple operation of internal register.
For realization of the above-mentioned algorithm in adjustment device 632, register transfer level has been used in one embodiment
Code (register transfer level code, RTL) language.Although RTL is highly effective, also can be used other
Hardware description language (HDL).
Other contents are with reference to the content in foregoing invention embodiment in the embodiment of the present invention, and details are not described herein.
Fig. 1 and 2 shows the flow chart of the method for adjustment of the tone for display according to disclosure example embodiment.
This method can be realized for example using the adjustment device for the tone for being used for display as shown in Fig. 3,4,5 or 6, but the disclosure is unlimited
In this.It should be noted that Fig. 1 and 2 is only the schematic of the processing according to included by the method for disclosure example embodiment
Illustrate, rather than limits purpose.It can be readily appreciated that the time that processing shown in Fig. 1 and 2 did not indicated or limited these processing is suitable
Sequence.In addition, be also easy to understand, these processing, which can be, for example either synchronously or asynchronously to be executed in multiple module/process/threads.
Through the above description of the embodiments, those skilled in the art is it can be readily appreciated that example described herein is implemented
Mode can also be realized by software realization in such a way that software is in conjunction with necessary hardware.Therefore, according to the disclosure
The technical solution of embodiment can be embodied in the form of software products, which can store non-volatile at one
Property storage medium (can be CD-ROM, USB flash disk, mobile hard disk etc.) in or network on, including some instructions are so that a calculating
Equipment (can be personal computer, server, mobile terminal or network equipment etc.) is executed according to disclosure embodiment
Method.
The method of adjustment of the tone for display of the disclosure, apparatus and system can receive multiple colors to be regulated
Regulated value to obtain the maximum of vision-control with the setting of each color oneself come individually adjusted
Applicability；It is separately adjustable to panel tone progress, have the advantages that adjust simple, free, quick.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to of the invention its
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the invention, these modifications, purposes or
Person's adaptive change follows general principle of the invention and including the undocumented common knowledge in the art of the disclosure
Or conventional techniques.The description and examples are only to be considered as illustrative, and true scope and spirit of the invention are by following
Claim is pointed out.
It is particularly shown and described the illustrative embodiments of the disclosure above.It should be appreciated that the disclosure is unlimited
In detailed construction described herein, set-up mode or implementation method；On the contrary, disclosure intention covers included in appended claims
Spirit and scope in various modifications and equivalence setting.
Claims (19)
1. a kind of method of adjustment of the tone for display characterized by comprising
The picture element signal of primary color space is provided；
The picture element signal is converted, the initial hue value of pixel corresponding with the picture element signal is obtained；
The tone range for comparing the initial hue value and preset color to be regulated, judges whether the pixel needs to carry out color
Tune section；
If the pixel needs to carry out tone adjusting, the corresponding color to be regulated is selected according to the initial hue value
The tone value and preset regulated value of tone value, the regulated value of preset color to be regulated and its adjacent color；
According to the initial hue value, the tone value of color to be regulated, the regulated value of preset color to be regulated and its adjacent face
The tone value of color and preset regulated value obtain the hue adjustment value of the pixel；And
According to the hue adjustment value of the pixel, color space signal of the pixel after hue adjustment is obtained.
2. the method according to claim 1, wherein further include: if the pixel does not need to carry out tone tune
When section, then initial color space signal to the display for directly exporting the pixel is shown.
3. the method according to claim 1, wherein wherein the color space is RGB.
4. the method according to claim 1, wherein wherein the display is OLED display.
5. the method according to claim 1, wherein wherein the value range of the initial hue value be [0 °,
360°]。
6. the method according to claim 1, wherein the wherein regulated value range of the preset color to be regulated
It is [- 30 °, 30 °].
7. the method according to claim 1, wherein wherein the tone range of the preset color to be regulated is
(H0, H1 ..., Hn-1, Hn), tone range are less than or equal to the value range of the initial hue value, wherein H0 to Hn
A kind of color to be regulated is respectively corresponded, and there is its respective tone range.
8. the method according to the description of claim 7 is characterized in that the wherein tone model according to preset color to be regulated
Enclose with the initial hue value, judge whether the pixel needs the step of carrying out tone adjusting to include:
Judge whether the initial hue value of the pixel falls into the tone range of the preset color to be regulated；
If fallen into the tone range, it is determined that the pixel needs to carry out tone adjusting；
If not in the tone range, it is determined that the pixel does not need to carry out tone adjusting.
9. the method according to the description of claim 7 is characterized in that wherein corresponding described according to initial hue value selection
The tone value and preset regulated value of the tone value of color to be regulated, the regulated value of preset color to be regulated and its adjacent color
The step of include:
When the initial hue value of the pixel falls into the tone range of the corresponding color to be regulated, select described to be regulated
The tone value and preset regulated value of one of color is counterclockwise adjacent color.
10. the method according to claim 1, wherein wherein according to the tone value of the color to be regulated, default
The regulated value of color to be regulated and its tone value of adjacent color and preset regulated value, obtain the hue adjustment of the pixel
Value includes:
To the regulated value and its adjacent color of the tone value of the initial hue value, color to be regulated, preset color to be regulated
Tone value and preset regulated value carry out one-line interpolation processing.
11. a kind of adjustment device of the tone for display characterized by comprising
Tone conversion circuit obtains and believes with the pixel for converting the picture element signal of received primary color space
The initial hue value of number corresponding pixel；
Tone decision circuitry, for comparing the tone range of the initial hue value and preset color to be regulated, described in judgement
Whether pixel needs to carry out tone adjusting；And
Hue adjust circuit, for being selected according to the initial hue value corresponding when the pixel needs to carry out tone adjusting
Tone value, the regulated value of preset color to be regulated and its tone value of adjacent color of the color to be regulated and preset
Regulated value, and according to the initial hue value, the tone value of color to be regulated, preset color to be regulated regulated value and its phase
The tone value of adjacent color and preset regulated value obtain the hue adjustment value of the pixel, and according to the tone tune of the pixel
Whole value obtains color space signal of the pixel after hue adjustment.
12. device according to claim 11, which is characterized in that when the tone decision circuitry judges that the pixel is not required to
When carrying out tone adjusting, then initial color space signal to the display for directly exporting the pixel is shown.
13. device according to claim 11, which is characterized in that wherein the color space is RGB.
14. device according to claim 11, which is characterized in that wherein the display is OLED display.
15. device according to claim 11, which is characterized in that wherein the tone conversion circuit include add, subtract, multiplying,
Except any combination in logic.
16. device according to claim 15, which is characterized in that when the tone conversion circuit includes except logic, institute
It states and is operated except logic using the first lookup table circuit.
17. device according to claim 11, which is characterized in that wherein the hue adjust circuit includes linear interpolation electricity
Road is used for the tone value to the initial hue value, color to be regulated, the regulated value of preset color to be regulated and its adjacent
The tone value of color and preset regulated value carry out one-line interpolation processing.
18. device according to claim 11, which is characterized in that wherein the hue adjust circuit further includes second tabling look-up
Circuit is used to calculate the sine and cosine value of the hue adjustment value of the pixel, and according to sine and cosine value acquisition
Color space signal of the pixel after hue adjustment.
19. a kind of system for adjusting display tone characterized by comprising
It shows screen, is used for the display using color space；
System processor, for initial picture element signal to be sent to display driving circuit；
Display driving circuit, including:
Processor interface logic, the interface being used to provide the described between system processor and the display driving circuit；
Any adjustment device in the claims 11 to 18；And
Screen drive, for controlling the display screen and being sent out with the pixel by the color space signal of hue adjustment
It send to the display screen；Wherein
The display driving circuit is driven by the electrical connection of system processor described in the processor interface logical AND, the display
Dynamic device circuit is electrically connected by the screen drive with the display screen, and the adjustment device connects with the processor respectively
Mouth logic and screen drive electrical connection.
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| DE102018219371A1 (en) * | 2018-11-13 | 2020-05-14 | Vega Grieshaber Kg | Method and device for adapting the signaling of a field device |
| US11355078B2 (en) | 2018-12-11 | 2022-06-07 | HKC Corporation Limited | Display panel driving method, driving system and display device |
| CN112907459B (en) * | 2021-01-25 | 2024-04-09 | 北京达佳互联信息技术有限公司 | Image processing method and device |
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