CN101431637A - Frame data processing apparatus and method - Google Patents
Frame data processing apparatus and method Download PDFInfo
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- CN101431637A CN101431637A CNA2007101657434A CN200710165743A CN101431637A CN 101431637 A CN101431637 A CN 101431637A CN A2007101657434 A CNA2007101657434 A CN A2007101657434A CN 200710165743 A CN200710165743 A CN 200710165743A CN 101431637 A CN101431637 A CN 101431637A
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Abstract
The invention provides a device and a method for processing frame data. A frame data with M*N pixels is divided into a plurality of sub-frame data. The sub-frame is statistical calculated for pixel amount relative to gray value orderly, the sub frame data is inputted into a multiplier after obtaining calculation statistical value. A space domain filter receives and stores at least one calculation statistical value orderly, applies corresponding weighing according with the calculation statistical value and obtains an operation parameter. Finally, the multiplier processes calculus to the sub-frame data that is sent into the multiplier at least next.
Description
Technical field
The present invention relates to the device and method that a kind of frame data are handled, relate in particular to a kind of pixel quantity that utilizes and carry out the device and method that frame data are handled with respect to the statistical calculation of gray value.
Background technology
Flourish along with Information of Science and Technology makes the user require more and more high to the function and the sound and light program of multimedia equipment.Not only the body of multimedia equipment itself must meet gently, thin, short, little demand, and the display of multimedia equipment is except having abundant color range, also need need higher resolution, higher brightness, higher contrast ratio, bigger visible angle and reaction time faster.
The display of multimedia equipment can utilize the frame data processor to carry out frame data and handle, and the frame data processor comprises the function that strengthens image contrast.Figure 1A shows in known frame data (Frame Data) processor for the block diagram of image frame data processing with the device of enhancing contrast ratio.Shown in Figure 1A, as the frame data (F of whole image
1) input frame memory 102 and when frame memory 102 stores the frame data of whole image thus, the frame data of this whole image are also imported arithmetic element 104 simultaneously.This arithmetic element 104 will be carried out the statistical calculation of pixel quantity with respect to gray value to the frame data of whole image, for example histogram (Histogram) statistics.After this arithmetic element 104 obtains the distribution map (as Figure 1B) of gray value and the pixel quantity of the frame data of its corresponding whole image, from then on arithmetic element 104 chooses the distribution that accounts for whole pixel quantity special ratios in the distribution map, for example accounts for whole pixel quantity 5% corresponding gray scale values and account for whole pixel quantity 95% corresponding gray scale values to be used as counting statistics value C
1, C
2Receive the frame data (F that stores whole image from frame memory 102 when multiplier (-icator) 106
1) time, and receive the counting statistics value C that imports by arithmetic element 104 simultaneously
1, C
2, then according to this counting statistics value C
1, C
2Come the pixel between whole pixel quantities 5% to 95% is performed calculations to realize the purpose to the enhancing of frame data degree of comparing.
But with above-mentioned method realize the gaining effect of frame data, because needing that the entire frame data are stored and deliver to arithmetic element handles, therefore when the data volume of frame data is big, memory relatively also just needs bigger capacity to store, and arithmetic element also just needs the more time to handle so big data volume.Thus, use memory will occupy the space of frame data processor wafer in a large number, and the purpose that can't realize dwindling frame data processor wafer.Generally speaking, be that statistics with histogram is carried out on the basis with the entire frame data, its required memory occupies six, seventy percent area of whole Digital Logic part in the wafer, even higher.
In order to solve owing to handle the problem that the entire frame data need memory capacious and occupy the hardware space, thereby another kind of the gain device consequentiality of image contrast of memory that omits, as shown in Figure 2.Referring to Fig. 2, frame data F
1, F
2, F
3... be input to arithmetic element 202 respectively successively, and be input to multiplier (-icator) 206 synchronously.For example, as frame data F
1When being input to multiplier (-icator) 206, frame data F
1Carry out the statistical calculation of pixel quantity via arithmetic element 202, will obtain one group with whole pixel quantity 5% corresponding gray scale values and account for the counting statistics value CF that whole pixel quantity 95% corresponding gray scale values are formed with respect to gray value
1Same, as frame data F
2When being input to multiplier (-icator) 206, frame data F
2Can obtain a counting statistics value CF via arithmetic element 202
2, simultaneously, be positioned at the frame data F of multiplier (-icator) 206
2Then by frame data F
1Obtain counting statistics value CF
1, come enhancement frame data F
2Reduced value.
Basically, this is by coming to strengthen its contrast to being positioned at follow-up frame data with the counting statistics value that frame data were produced more preceding in the sequence.Though so configuration that the practice need not memory owing to be not to adopt existing frame data counting statistics value to strengthen this existing frame data, but is adopted other frame data counting statistics value this existing frame data that gain, and therefore will produce error.
Summary of the invention
Therefore, the device and method that the object of the present invention is to provide a kind of frame data to handle, with the consumption that reduces memory and dwindle frame data processor wafer, and the consumption that reduces the hardware resource.
The first embodiment of the present invention is to provide a kind of display unit, and it comprises linear memory, arithmetic element, space domain filter, multiplier (-icator) and liquid crystal panel.Wherein, arithmetic element series connection space domain filter; Linear memory series gain device, and space domain filter electrically connects multiplier (-icator).Wherein, the big I of linear memory stores the frame data with M*N pixel of 1/P, and wherein, P is to be natural number greater than 1 natural number and M, N.Promptly the capacity by linear memory can be divided into the frame data with M*N pixel a P sub-frame data, and wherein, each sub-frame data has M*N/P pixel.Arithmetic element can be carried out the statistical calculation of pixel quantity with respect to gray value to sub-frame data, thereby obtains the counting statistics value.The counting statistics value that arithmetic element produced can be sent into space domain filter successively.
Space domain filter is obtained at least two counting statistics values successively, and according to the corresponding ranking operation counting statistics value that sets, and producing a parameter, and this parameter is sent into multiplier (-icator).
And multiplier (-icator) receives the sub-frame data of and output stored by linear memory successively, and the relevant parameter of being exported by space domain filter.Multiplier (-icator) carries out the processing of enhancing contrast ratio according to relevant parameter to corresponding sub-frame data.Ye crystal face Ban The is in order to the display frame data.
Because the parameter (except that the parameter of first sub-frame data that is useful in the start frame data) that is used for handling sub-frame data includes sub-frame data thus and previous sub-frame data produced at least counting statistics value.Therefore, parameter has comprised the contrast characteristic of sub-frame data, and the effective contrast of enhancer frame data, in addition, this parameter has comprised the contrast metric of previous sub-frame data, and the subframe after feasible processing the and the border of the subframe after the previous processing are unlikely to produce discontinuous situation.
The method that the present invention provides a kind of frame data to handle in first embodiment, its step is as described below: at first, the capacity of frame data with M*N pixel by linear memory is divided into P sub-frame data, arithmetic element can be carried out the statistical calculation of pixel quantity with respect to gray value to sub-frame data, thereby obtains a counting statistics value.Wherein, each sub-frame data has M*N/P pixel, and M, N are natural number greater than 1 for natural number P.
Secondly, the counting statistics value that arithmetic element produced can be sent into space domain filter successively.Space domain filter is obtained at least two counting statistics values successively, and according to the corresponding ranking operation counting statistics value that sets, and producing a parameter, and this parameter is sent into multiplier (-icator).
At last, multiplier (-icator) receives the sub-frame data of and output stored by linear memory successively, and the relevant parameter of being exported by space domain filter.Multiplier (-icator) carries out the processing of enhancing contrast ratio according to relevant parameter to corresponding sub-frame data.
The second embodiment of the present invention provides a kind of display unit, and it comprises arithmetic element, space domain filter, time-domain filter, multiplier (-icator), and liquid crystal panel.Arithmetic element electrically connects space domain filter successively, time-domain filter, and multiplier (-icator).In a second embodiment, known time-domain filter is imported, thereby can not need use linear memory, and can guarantee the continuity that data show by the time-domain filter.Therefore, except as first embodiment in the space domain filter that adopted, add the time-domain filter, then can use for the leading portion sub-frame data in the frame data and add up and through computing resulting parameter, strengthen in these frame data than the contrast of back segment sub-frame data or the contrast of different frame data.Ye crystal face Ban The is in order to the display frame data.
The method that the present invention provides a kind of frame data to handle in a second embodiment, its step comprises: at first, have a M*N pixel frame data with one and be divided into P sub-frame data, sub-frame data is sent into arithmetic element according to sequential and is carried out the statistical calculation of pixel quantity with respect to gray value, to obtain the corresponding calculated statistical value respectively.Wherein, each sub-frame data number consecutively is f
tAnd each sub-frame data has M*N/P pixel, and M, N, P are that natural number and t are 1 to P natural number.
Secondly, as a sub-frame data f
tWhen sending into arithmetic element, also send in the multiplier (-icator), incite somebody to action f at least via space domain filter
T-1, f
T-2The counting statistics value that produced through the parameter of weighted calculation gained can be again via the time-domain filter further with other parameters, for example f
T-3, f
T-4Through the value that computing produced, after doing ranking operation and handling, come sub-frame data f
tDo calculation process with enhancing contrast ratio, sub-frame data f
tBe that the time-domain filter is sent into parameter on the time point of multiplier (-icator), be positioned at the sub-frame data of multiplier (-icator).
In the second embodiment of the present invention, owing to import the time-domain filter, therefore can not use the frame data storing memory to store frame data, in addition, add also using of space domain filter, not only guaranteed the continuity that data show, the parameter that can also avoid using the different frame data to produce is carried out the enhancing contrast ratio processing and is produced the problem of distortion.
Description of drawings
For above-mentioned and other purposes of the present invention, feature, advantage and embodiment can be become apparent, will be elaborated with reference to the accompanying drawings, wherein:
Figure 1A shows in the known frame data processor image frame data is handled block diagram with the device of enhancing contrast ratio;
Figure 1B shows the distribution map of gray value and the pixel quantity of the frame data of corresponding whole image;
Fig. 2 shows and has omitted memory in the known frame data processor image frame data are handled block diagram with the device of enhancing contrast ratio;
Fig. 3 A shows the block diagram of the device that a kind of frame data of first embodiment of the invention handle;
Fig. 3 B shows the frame data that will have the M*N pixel and is divided into P sub-frame data S
tSchematic diagram;
Fig. 4 A shows the block diagram of the device that a kind of frame data of second embodiment of the invention handle;
Fig. 4 B shows the frame data that will have the M*N pixel and is divided into P sub-frame data f
tSchematic diagram; And
Fig. 5 shows the data processing method schematic diagram of space domain filter and time-domain filter.
[main element symbol description]
102: frame memory 302: linear memory
104: arithmetic element 304: space domain filter
106: multiplier (-icator) 306: multiplier (-icator)
202: arithmetic element 400: cutting and arithmetic element
204: time-domain filter 402: space domain filter
206: multiplier (-icator) 404: the time-domain filter
300: cutting and arithmetic element 406: multiplier (-icator)
S
1～S
p: sub-frame data S
Ij: the j in i frame data
f
1～f
t: the sub-frame data sub-frame data
Embodiment
With reference to Fig. 3 A and Fig. 3 B, it shows the block diagram of the device of handling according to a kind of frame data of first embodiment of the invention simultaneously.
Fig. 3 A illustrates first embodiment of the invention, and one is applied to the frame data processing unit of display unit.As shown in Figure 3A, the frame data processing unit comprises arithmetic element 300, linear memory 302, space domain filter 304 and multiplier (-icator) 306.Frame data can be sent in the linear memory 302 with the form of sub-frame data successively and store, and send into arithmetic element 300 synchronously and carry out the statistical calculation of pixel quantity with respect to gray value, after linear memory 302 is filled with, arithmetic element 300 can be sent into space domain filter 304 with respect to the counting statistics value that statistics produced that the sub-frame data that stores in the linear memory 302 is done, after the sub-frame data that stores in the isochrone memory 302 can be sent into multiplier (-icator) 304 and empty linear memory 302, repeat the counting statistics value that sub-frame data produced of above-mentioned program to store in the continuous generation corresponding online memory 302.
Can do ranking operation at least two counting statistics values according to user's design in the space domain filter 304 and obtain a parameter, this parameter can be sent into multiplier (-icator) 306 and come the adjustment of corresponding sub-frame data degree of comparing.
Shown in Fig. 3 B, the frame data with M*N pixel utilize the capacity of linear memory to be divided into P sub-frame data S
p, wherein, each sub-frame data S
pHave M*N/P pixel, and M, N are natural number and P for greater than 1 natural number.Linear memory 302 can store a sub-frame data and arithmetic element 300 can be to sub-frame data S
pCarry out the statistical calculation of pixel quantity, to obtain corresponding calculated statistical value V with respect to gray value
p
For instance, work as S
1When sending into linear memory 302 and arithmetic element 300 simultaneously, arithmetic element 300 output sub-frame data S
1Pairing counting statistics value V
1Enter space domain filter 304, simultaneously, sub-frame data S
1Can send into multiplier (-icator) 306.Space domain filter 304 can be done ranking operation with continuous three counting statistics values according to user's design, for example V
P-2* 0.2+V
P-1* 0.2+V
p* 0.6.Work as V
1When sending into space domain filter 304, there is no V
0And V
-1Space domain filter produces, so can produce parameter 0.6*V
1, and it is sent into 306 couples of sub-frame data S of multiplier (-icator)
1Degree of comparing is handled.Then, arithmetic element 300 output sub-frame data S
2Pairing counting statistics value V
2Enter space domain filter 304, simultaneously, sub-frame data S
2Can send into multiplier (-icator) 306.Because there is no V
0, space domain filter 304 can produce parameter 0.6*V
2+ 0.2*V
1, and it is sent into 306 couples of sub-frame data S of multiplier (-icator)
2Degree of comparing is handled.As arithmetic element 300 output sub-frame data S
3Pairing counting statistics value V
3Enter space domain filter 304, simultaneously, sub-frame data S
3Can send into multiplier (-icator) 306.Send into 306 couples of sub-frame data S of multiplier (-icator)
3Parameter 0.6*V according to space domain filter 304 generations
3+ 0.2*V
2+ 0.2*V
1Degree of comparing is handled.Certainly, 306 couples of sub-frame data S of multiplier (-icator)
4Parameter 0.6*V according to space domain filter 304 generations
4+ 0.2*V
3+ 0.2*V
2Degree of comparing is handled, follow-up sub-pixel S
pParameter 0.6*V according to space domain filter 304 generations
p+ 0.2*V
P-1+ 0.2*V
P-2Degree of comparing is handled.
The quantity and the pairing weight that apply to the counting statistics value Vp of space domain filter 30 can be designed according to actual demand by the designer, above-mentioned three counting statistics values and pairing weight only are to illustrate for example, can not therefore limit the present invention.Therefore according to the needs on should designing, also can adopt discontinuous counting statistics value to produce the contrast processing parameter.
By the above-mentioned first embodiment of the present invention as can be known, because the data volume of subframe only is the 1/p of frame data (Frame), so the size of linear memory only needs the 1/p of known as memory device, so the space of the shared hardware of memory will significantly reduce, and the consumption of hardware resource also reduces.
In addition, the use of space domain filter makes each subframe and strengthens except the counting statistics value degree of comparing that can both utilization itself be produced, outside the error of the subframe before making subframe after the gain with respect to gain reduces.Each parameter that is used for handling sub-frame data has also comprised the counting statistics value that previous sub-frame data produced at least, so when each subframe was combined into an entire frame after gain, the subframe after each gain can not produce the discontinuous problem in border each other.
With reference to Fig. 4 A and Fig. 4 B, it shows another preferred embodiment according to the present invention, a kind of block diagram that is applied to the frame data processing unit of explicit device simultaneously.
Fig. 4 A shows the frame data processing unit of second embodiment of the invention.Shown in Fig. 4 A, the frame data processing unit comprises arithmetic element 400, space domain filter 402, time-domain filter 404 and multiplier (-icator) 406.Frame data can be sent into multiplier (-icator) 406 successively, and send into arithmetic element 400 synchronously and carry out the statistical calculation of pixel quantity with respect to gray value.
Shown in Fig. 4 B, the frame data with M*N pixel utilize the block signal and are divided into P sub-frame data S
p, wherein each sub-frame data has M
*N/P pixel, and M, N are natural number and P for greater than 1 natural number.Number of sub frames is sent to arithmetic element 400 and multiplier (-icator) 406 according to sequential.After arithmetic element 400 is read the block signal, the pixel quantity that arithmetic element 400 can be done at sub-frame data produces the counting statistics value with respect to the statistical calculation result of gray value, and send into space domain filter 402, as disclosing of first embodiment, space domain filter 402 can compute weighted a plurality of counting statistics values according to user's design, obtains sending into time-domain filter 404 after first parameter.Time-domain filter 404 obtains second parameter after also can being weighted processing according to first parameter or a plurality of first parameter.Second parameter can be sent into 406 pairs of follow-up sub-frame datas of multiplier (-icator) and carry out the processing of enhancing contrast ratio.
For example, set by two sub-frame data (S in the space domain filter 402
1, S
2) counting statistics value (V
1, V
2) generation first parameters R
1And two sub-frame data (S
2, S
3) counting statistics value (V
2, V
3) generation first parameters R
2First parameter (the R
1, R
2) send into time-domain filter 404 and can produce second parameters R '
1, second parameters R that produced of time-domain filter 404 then '
1Can be used for to the sub-frame data S in the multiplier (-icator) on the different time points 406
4(at this moment, arithmetic element 400 is being carried out sub-frame data S to carry out the processing of enhancing contrast ratio
4The statistics of grey scale pixel value).Then, two sub-frame data (S
2, S
3) counting statistics value (V
2, V
3) generation first parameters R
2, and two sub-frame data (S
3, S
4) counting statistics value (V
3, V
4) generation first parameters R
3First parameter (the R
2, R
3) send into time-domain filter 404 and can produce second parameters R '
2, second parameters R that produced of time-domain filter 404 then '
2Can be used to sub-frame data S
5Carrying out enhancing contrast ratio handles.Though, to sub-frame data S
4Or S
5Carrying out enhancing contrast ratio, to handle employed second parameter be not to be from sub-frame data S
4Or S
5The middle generation, but produce from corresponding sub-frame data three counting statistics values that sub-frame data produced before.
Identical with first embodiment, apply to the counting statistics value V of space domain filter 402 and time-domain filter 404
pNumber and pairing weight can design according to actual demand by the designer, therefore it only is to illustrate for example that three counting statistics values of above-mentioned use produce second parameter, can not be and restriction the present invention.Therefore according to the needs in the design, also can adopt discontinuous counting statistics value to produce the contrast processing parameter.
By second preferred embodiment of the invention described above as can be known, but adopt also joining day territory filter of mode that space domain filter can carry out dividing processing to frame data.Adopt the time-domain filter linear memory among first embodiment can be removed, and then further reduce the demand in hardware space.Thus, not only do not need memory, and frame data processor wafer dwindles, increased the market competitiveness by the consumption that reduces the hardware resource.The data processing method schematic diagram that space domain filter and time-domain filter carry out can be with reference to figure 5, wherein S
IjRepresent j sub-frame data in i the frame data.
Moreover, because the use of time-domain and space domain filter, allow each sub-frame data can both be through corresponding calculation, when being combined into entire frame data after making each sub-frame data through gain, the subframe after each gain can not produce border issue each other.And the gain after sub-frame data with the gain before sub-frame data compare, error each other is less, and when image switching, can not produce the phenomenon of flicker.
Though below adopted preferred embodiment to disclose the present invention; but it is not to be used to limit the present invention; under the situation that does not break away from the spirit and scope of the present invention; those skilled in the art can carry out various modifications and retouching; therefore, protection scope of the present invention is to be defined by subsidiary claim.
Claims (11)
1, a kind of display unit, it comprises at least:
Linear memory is used for storing one of a plurality of sub-frame datas in the frame data;
Arithmetic element is carried out the statistical calculation of pixel quantity with respect to gray value to each sub-frame data that is stored in the described linear memory, thereby is obtained a counting statistics value;
Space domain filter, the counting statistics value of at least two sub-frame datas of reception is to calculate a parameter;
Multiplier (-icator) receives described parameter, and corresponding sub-frame data is carried out the processing of enhancing contrast ratio according to described parameter; And
Liquid crystal panel is in order to show described frame data.
2, display unit as claimed in claim 1, wherein, described counting statistics value is for accounting for whole pixel quantity 5% corresponding gray scale values and accounting for whole pixel quantity 95% corresponding gray scale values.
3, a kind of method of frame data processing, its step comprises:
(A) with sub-frame data while incoming line memory and arithmetic element, wherein, described sub-frame data is divided into one of them equal portions after P part for the frame data that have a M*N pixel with, wherein, described sub-frame data has M*N/P pixel, and P is to be natural number greater than 1 natural number and M, N;
(B) arithmetic element is carried out the statistical calculation of pixel quantity with respect to gray value to described sub-frame data, to obtain a counting statistics value;
(C) space domain filter receives and stores the described counting statistics value that described arithmetic element is exported successively, and according to described counting statistics value it is applied corresponding weights, obtains a parameter;
(D) multiplier (-icator) receives each sub-frame data of and output stored by described linear memory synchronously, and by the pairing parameter of described sub-frame data of described space domain filter output, described multiplier (-icator) according to described parameter to the processing that performs calculations of described sub-frame data.
4, the method for frame data processing as claimed in claim 3, wherein, described counting statistics value is for accounting for whole pixel quantity 5% corresponding gray scale values and accounting for whole pixel quantity 95% corresponding gray scale values.
5, the method handled of frame data as claimed in claim 3, wherein, the lifting that is used to realize the overall contrast when described frame data show is handled in described calculation.
6, a kind of display unit, it comprises at least:
Arithmetic element, it is according to the sub-frame data of sequential frames received certificate, and each sub-frame data is carried out the statistical calculation of pixel quantity with respect to gray value, to obtain a counting statistics value;
Space domain filter, it receives at least two counting statistics values, and union obtains one first parameter;
The time-domain filter, it receives at least two first parameters, and union obtains one second parameter;
Multiplier (-icator), with the synchronous sub-frame data that receives described frame data of described arithmetic element, and described second parameter, and adopt described second parameter that the sub-frame data that is positioned at described multiplier (-icator) on this time point is gained; And
Liquid crystal panel is in order to show described frame data.
7, display unit as claimed in claim 6, wherein, described counting statistics value is for accounting for whole pixel quantity 5% corresponding gray scale values and accounting for whole pixel quantity 95% corresponding gray scale values.
8, as display unit as described in the claim 6, wherein, described multiplier (-icator) gains to the sub-frame data that is positioned at described multiplier (-icator) on this time point, the lifting of the overall contrast when realizing that described frame data show.
9, a kind of method of frame data processing, its step comprises:
(A) arithmetic element receives a sub-frame data with frame data of M*N/P pixel successively, and each sub-frame data carried out the statistical calculation of pixel quantity with respect to gray value, to obtain a counting statistics value, described sub-frame data is divided into one of them equal portions after P part for the frame data that have a M*N pixel with, and P is to be natural number greater than 1 natural number and M, N;
(B) space domain filter receives and stores the described counting statistics value of described arithmetic element output successively, and space domain filter selects a plurality of numerical value from the counting statistics value that has stored, respectively it is applied corresponding weights and summation, obtain one first parameter;
(C) the time-domain filter receives and stores first parameter of described space domain filter output, and selects a plurality of numerical value from first parameter that has stored, respectively it is applied corresponding weights and summation, obtains one second parameter;
(D) multiplier (-icator) receives another sub-frame data of and output stored by described linear memory successively, and by second parameter of described space domain filter output, and described multiplier (-icator) utilizes described second parameter that described another sub-frame data is gained.
10, the method for frame data processing as claimed in claim 9, wherein, described counting statistics value is for accounting for whole pixel quantity 5% corresponding gray scale values and accounting for whole pixel quantity 95% corresponding gray scale values.
11, the method handled of frame data as claimed in claim 9, wherein, described multiplier (-icator) utilizes described second parameter that described another sub-frame data is gained, the lifting of the overall contrast when realizing that described frame data show.
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| CN108962155A (en) * | 2017-05-19 | 2018-12-07 | 奇景光电股份有限公司 | Luminance regulating method and display |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1770847A (en) * | 2004-10-15 | 2006-05-10 | 创世纪微芯片公司 | Adaptive contrast enhancement |
| CN101010937A (en) * | 2004-09-01 | 2007-08-01 | 日本电气株式会社 | Image correction system and image correction method |
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| KR20040008067A (en) * | 2002-07-15 | 2004-01-28 | 삼성전자주식회사 | Image enhancing circuit using corelation between frames and method therefor |
| US7426312B2 (en) * | 2005-07-05 | 2008-09-16 | Xerox Corporation | Contrast enhancement of images |
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| CN101010937A (en) * | 2004-09-01 | 2007-08-01 | 日本电气株式会社 | Image correction system and image correction method |
| CN1770847A (en) * | 2004-10-15 | 2006-05-10 | 创世纪微芯片公司 | Adaptive contrast enhancement |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108962155A (en) * | 2017-05-19 | 2018-12-07 | 奇景光电股份有限公司 | Luminance regulating method and display |
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