CN1924970A - Image processing method for plasma display device - Google Patents
Image processing method for plasma display device Download PDFInfo
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- CN1924970A CN1924970A CNA2006101394449A CN200610139444A CN1924970A CN 1924970 A CN1924970 A CN 1924970A CN A2006101394449 A CNA2006101394449 A CN A2006101394449A CN 200610139444 A CN200610139444 A CN 200610139444A CN 1924970 A CN1924970 A CN 1924970A
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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
- G09G3/22—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 using controlled light sources
- G09G3/28—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 using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
- G09G3/288—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 using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels
- G09G3/296—Driving circuits for producing the waveforms applied to the driving electrodes
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- 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
- G09G3/2007—Display of intermediate tones
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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
- G09G3/22—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 using controlled light sources
- G09G3/28—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 using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
- G09G3/288—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 using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels
- G09G3/291—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 using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels controlling the gas discharge to control a cell condition, e.g. by means of specific pulse shapes
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0247—Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes
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Abstract
The present invention concerns a method for processing the image of PDP, especially concerns an image processing method of PDP which enhances the gray display ability, reducing the semit noise and running space error diffusion and time error diffusion synchronously. Semit wobble method and space error diffusion method mentioned herein are used to improve the image gray scale displayed on the PDP in current technique, as a result, the display quality is reduced due to the inherent lines when displaying a certain gray scale or image. In order to solve the above problem, time error diffusion is introduced according to the visual characteristics that accumulating the light to sense the brightness. The flicker happened under a certain condition is eliminated by space error diffusion. Therefore, lines of space error diffusion or wobble and the flicker of time error diffusion are greatly reduced to improve the display quality.
Description
Technical field
The invention relates to the image processing method of plasma display, especially about, improve the image processing method of plasma display, in order to improve the GTG display capabilities, reduce semitone noise (halftone noise), and carry out the image processing method of the plasma display of spatiality error diffusion and timeliness error diffusion simultaneously.
Background technology
Plasma display (the Plasma Display Panel that together gets most of the attention with TFT liquid crystal display cells (LCD), organic EL, FED etc. as display element of new generation, hereinafter to be referred as PDP) be the ultraviolet ray excited R of 147nm, G, the B fluorophor that produces when utilizing helium (He)+xenon (Xe) in the discharge cell (cell) of being isolated or neon (Ne)+xenon (Xe) gas discharge by interlayer (barrier rib), when above-mentioned fluorophor is back to the base stage state from excited state, the display element of the luminescence phenomenon that energy difference produces.Above-mentioned PDP display element, because of it is simple in structure, easy to manufacture, high brightness and high-luminous-efficiency, memory function, high non-linear, characteristics such as visual angle more than 160 °, to capture the market of large-scale display element more than the 40inch, the 102inch product is also developed.
Generally, plasma display is not as CRT or LCD etc., control light with analog form, thereby obtain required GTG, can open (on)/the close matrix array (matrix array) of the discharge cell (cell) of (off), modulating light pulse quantity but utilize, show GTG, therefore have the linear luminance characteristic, but not the curve light characteristic (CRT, LCD).
This PDP GTG display packing can be called a kind of pulse amplitude modulation (Pulse WidthModulation) method.The brightness of PDP is along with the number of pulses linear change, is non-linear and the people visual angle can be discerned, therefore will produce noise (noise) when low GTG field demonstration GTG.Therefore, for addressing the above problem, PDP carries out contrary gamma compensated (reverse gammacompensation) to the video data of input.Contrary gamma compensated (reverse gamma compensation) is the work that makes intrinsic brilliance keep required state, carries out before semitone (halftone) compensation that shows correct GTG.Generally, PDP shines upon (mapping) through contrary gamma compensated (reverse gamma compensation), semitone (halftone) compensation with view data and subdomain (sub-field), is presented on the picture then.
The object brightness of PDP is shown as different brightness values respectively by the GTG value of certain phase, generally is suitable for 61 stages (0-60), 256 stages (0-255) etc.But even utilize this brightness value, intrinsic brilliance is not multiple GTG values such as demonstration above-mentioned 61 or 256 yet, but shows several brightness values that are defined as subdomain (sub-field).Brightness value (quantity of subdomain (sub-field)) about among the general use 8-15.Therefore, PDP can't show sufficient GTG in darker field when carrying out against gamma compensated (reverse gamma compensation), therefore generation is seemed the agglomerating profile noise of image (Contour Noise).
This, for the GTG that shows that PDP lacks, after carrying out contrary gamma compensated (reverse gammacompensation), use semitone (halftone) methods such as vibration (dithering) method and error diffusion (error diffusion) method.At first, error diffusion method is described.
Fig. 1 is that explanation is general that use, the simplest shake (dithering) method, and vibration image (ditherpattern) synoptic diagram when being 2 * 2 vibration masks (dithering mask) that are suitable for shown in Fig. 1 a is as Fig. 1 b-Fig. 1 f.That is, shake (dithering) method is that the GTG value of each pixel (pixel) is made comparisons with the specified threshold (threshold) of vibration mask (dither mask), judges whether to take place the method for carry (carry).At this moment, open the pixel (pixel) that carry takes place (on), close the pixel (pixel) that carry (carry) do not take place (off), improve the display capabilities of the GTG that lacks.
But, in shake (dithering) method, vibration image (dither pattern) will appear in static image or the field with value of homogeneous, be suitable for by each frame (frame) in multiple vibration mask (dither mask) applicable pattern of PDP of vibration image (dithering pattern) of different modes, when pixel (pixel) is mobile, no matter low GTG or high gray all glimmer (Flicker); With diagonal, when whenever moving a pixel (pixel), produce perpendicular line vibration noise (dither noise).Again, compare with threshold value (threshold) during carry (carry), big or little, concrete difference value equal error degree is not considered fully.
Fig. 2 is the concept map of error diffusion method, and Fig. 3 is a calcspar of carrying out above-mentioned error diffusion, is be applicable to semitone (halftone) mode on the plasma display of the prior art a kind of.
Error diffusion method is the error effect adjacent pixels (pixel) that produces when making corresponding pixel (pixel) quantization (Quantization) as shown in Figure 2, with the method for spatiality ground solution to the compensation of error of generation.Wherein, error diffusion method is that the error amount that produces in adjacent pixels (pixel) a, b, c, d multiply by specific coefficient respectively.Then, quantization (Quantization) is implemented in above-mentioned error amount and the addition of i value of multiply by coefficient.Again then, will be stored in the line memory (line memory) with the error amount that above-mentioned quantization (Quantization) produces, and in each pixel (pixel) repeatedly method.The particular factor that multiplies each other with above-mentioned error amount, promptly error weight (weight) and be 1, mainly handle with a left side → right side, right → following direction, its threshold value (threshold) is the intermediate value in GTG stage.
As shown in Figure 3, error diffusion square (block) is carried out spatiality feedback process (feedbackroutine) repeatedly, mapping (mapping) and output and the immediate brightness value of above-mentioned object brightness.Again, among Fig. 3, the course of work can be represented with following mathematical formulae 1:
Mathematical formulae 1:
E
n(i，j)＝f
n(i，j)-B
n(i，j)
Wherein, n is present frame (frame), and (i j) is the GTG value of above-mentioned contrary gamma compensated (reverse gammacompensation) back input to F.Q square (block) the 10th, quantization square (Quantization block), (i j) is quantization (Quantization) GTG value to B.(i j) is the error amount that produces in the quantization (Quantization) to E, and (i is that contrary gamma compensated (reversegamma compensation) back is imported j), with the value of GTG value and the addition of quantization (Quantization) error amount to f.That is, (i is with (i, j) error amount of adjacent pixels (pixel) and error are filtered (filter), i.e. the error diffusion coefficient h of H square (block) (11) (i, j) multiply each other out the value of addition with the F of present frame (frame) j) to f.
On the one hand, in the above-mentioned error diffusion method, the above-mentioned error diffusion coefficient of adjacent pixels (pixel) all equates, along with in each row (line) and frame (frame) repeatedly, because certain error diffusion coefficient the error diffusion lines will occur in the GTG field of homogeneous.
Summary of the invention
In view of this, suitable semitone (halftone) mode has for the GTG that improves the image that shows on the above-mentioned prior art ionic medium body display panel: shake (dithering) method and spatiality error diffusion method, above-mentioned shake (dithering) method or spatiality error diffusion method, under specific GTG or picture show state, lines to occur, reduce display quality.
In view of this, in order to address the above problem, the object of the present invention is to provide utilization by each time period accumulation light, the people's of perceived brightness visual characteristic imports timeliness error diffusion mode.For contingent flicker (flickering) under specific circumstances, remove with spatiality error diffusion mode.Thereby solve the image processing method of the plasm display device of the problem that produces flicker (flickering) and specific lines.
For addressing the above problem the image processing method of the plasm display device of inventing, comprise: the stage of partly using certain bit (bit) to cut apart the minority of picture signal of input; The above-mentioned bit of having cut apart (bit) unit signal is divided into timeliness error diffusion and spatiality error diffusion and execution respectively, the carry (carry) that obtains after one of them error diffusion of execution is applicable to the stage of another error diffusion.
The image processing method of aforesaid plasm display device, it is characterized in that above-mentioned timeliness error diffusion method, carry out quantization (Quantization) error that takes place in will a last frame (frame) and the input data addition of a new frame (frame) repeatedly, and it is carried out quantization (Quantization) and output, thereby obtain the mode of above-mentioned quantization (Quantization) error again.
The image processing method of aforesaid plasm display device, it is characterized in that the above-mentioned carry (carry) that draws after the error diffusion of will carrying out was applicable in the stage of another error diffusion, comprised: with the stage of the output and above-mentioned carry (carry) addition of above-mentioned another error diffusion.
The image processing method of aforesaid plasm display device, it is characterized in that the above-mentioned carry (carry) that draws after the error diffusion of will carrying out was applicable in the stage of another error diffusion, when above-mentioned fraction part is divided into bit (bit) unit, by its sequence of positions, carry out the error diffusion of handling corresponding to the data of next bit (bit), utilize its result then, carry out the error diffusion of handling corresponding to the data of a last bit (bit).The image processing method of aforesaid plasm display device, it is characterized in that in the stage of above-mentioned execution error diffusion, comprise: carry out in the carry (carry) and the above-mentioned bit of cutting apart (bit) that obtains after above-mentioned 2 kinds of error diffusion, carry out the stage of shake (dithering) for the bit of not carrying out error diffusion (bit).
The image processing method of aforesaid plasm display device is characterized in that stage of above-mentioned partition bit (bit), uses the numeral identical with the kind of semitone (halftone) mode of pre-use to cut apart.The image processing method of aforesaid plasm display device, the stage that it is characterized in that above-mentioned partition bit (bit) also comprises: carry out the input of above-mentioned spatiality, timeliness error diffusion in advance or carry out among the result of error diffusion the stage of giving weight (weight) at least one value.
The beneficial effect of the image processing method of the plasm display device among the present invention is to utilize by each time period accumulation light, and the people's of perceived brightness visual characteristic imports timeliness error diffusion mode.For contingent flicker (flickering) under specific circumstances, remove with spatiality error diffusion mode.The flicker (flickering) that occurs when specific lines that occurs when making it can reduce usage space error diffusion or vibration (dithering) in a large number and property service time error diffusion, thus display quality improved.
Description of drawings
Fig. 1 is vibration image (ditherpattern) synoptic diagram of general vibration mask (dither mask) in the prior art.
Fig. 2 is the concept map of error diffusion method in the prior art.
Fig. 3 is an error diffusion calcspar in the prior art
Fig. 4 is the calcspar by each time period propagated error.
Fig. 5 is the data entry format synoptic diagram.
Fig. 6 to Fig. 7 is semitone in the embodiment of the invention (halftone) mode calcspar.
Fig. 8 to Fig. 9 is semitone in the another embodiment of the present invention (halftone) mode calcspar.
The symbol description of major part in the diagram
10,20: quantization square (Quantization block) 11: error is filtered (filter)
21: error is filtered (filter) 30,40,50,60: vibration (dither) portion
31,42,52,61: timeliness error diffusion portion 32,41,51,62: spatiality error diffusion portion
53,54,63,64: weight (weight) assigning unit
Embodiment
Below, lift preferred embodiment, and conjunction with figs. is described in detail as follows:
Fig. 4 is the calcspar that is applicable to the execution time property error diffusion of the embodiment of the invention, and is similar with the calcspar of carrying out the spatiality error diffusion as shown in the figure, works in the mode of diffusion feedback error.
The course of work of above-mentioned Fig. 4 can be represented with following mathematical formulae 2:
Mathematical formulae 2:
E
n(i，j)＝f
n(i，j)-B
n(i，j)
Wherein, n is present frame (frame), and (i is the GTG value of contrary gamma compensated (reverse gammacompensation) back input j) to F, can be called view data simply.Q square (block) the 20th, quantization square (Quantization block), (i j) is quantization (Quantization) GTG value to B.(i is to carry out the error amount that quantization (Quantization) is generation j) to E, and (i j) is the GTG value of contrary gamma compensated (reverse gamma compensation) back input and the value of quantization (Quantization) error amount addition to f.That is, (i is that (i is j) with the value that postpones the value addition that quantization (Quantization) error that square (block) 21 postpones generation in the last frames (frame) draws by 1 frame (frame) with the F of present frame (frame) j) to f.The delay scale (staff) of above-mentioned delay square (block) 21 can be adjusted, but 1 frame (frame) delay is enough.
In the above-mentioned timeliness error diffusion calcspar, (i j) means the timeliness error to E, therefore gets most of the attention, and this is the error that produces in the aforesaid last frame (frame).Promptly, general error diffusion is dispersed to adjacent pixels (pixel) with the spatiality error, in contrast, the timeliness error is accommodated the error that produces in the last frame (frame) in the present frame (frame), the error that produces in the present frame (frame) is applicable to again in the next frame (frame), error will be accumulated along with the time, and will be irrelevant with the size of error, can avoid damage.
Therefore, error or quantization (Quantization) value that static image or field with GTG of homogeneous are carried out producing in the process of quantization (Quantization) all equate, thereby can prevent the specific lines that produces in the space error diffusion.
But, as mentioned above, when merely carrying out the timeliness error diffusion, if the picture that occurs having same gray level repeatedly in the whole image, or be initial point rest image to occur, when the error of timeliness accumulation has identical value to whole image, will glimmer in the picture (flickering).That is, quite a few the display part GTG value in the picture, then with while carry (carry), the brightness of picture integral body shows unnecessary GTG.
Therefore, during this single method of where applicable intersexuality error diffusion, will produce flicker (flicker) noise under specific circumstances, and compare with the lines that the spatiality error diffusion causes, its picture quality will reduce more.
In the embodiment of the invention, above-mentioned timeliness error diffusion method is combined with spatiality error diffusion method of the prior art, more superior semitone (halftone) method is provided.Again, also be suitable for original vibration (dither) mode,, suitably make up the carry (carry) that takes place in each method, the carry (carry) that finally obtains is disperseed brokenly by the time and space to more spaces and time dispensing error diffusion.That is, disposablely GTG can not changed rapidly, and, carry out irregular carry (carry), make it fixedly lines not occur the field of the GTG that shows homogeneous to the multi-field carry (carry) of carrying out.
Fig. 5 is suitable in the invention described above, carries out view data (GTG value) the form synoptic diagram of contrary gamma compensated (reverse gammacompensation).As shown in the figure, by the integer portion part of certain bit (bit), partly form with the fractional part of certain bit (bit).Above-mentioned fractional part partly is the part that produces error when carrying out quantization (Quantization), is the part that carry (carry) can be taken place by error diffusion or vibration (dither).
Therefore, if above-mentioned fraction part is n bit (bit) (being 7 bits (bit) in the diagram), then it is divided into i, j, k bit (bit), the method that each bit (bit) is suitable for different semitones (halftone) is a core content of the present invention.If, pre-semitone (halftone) method that is suitable for is spatiality error-diffusion method and timeliness error-diffusion method, (for example then can be divided into 2 unit bits (bit), 4 bits (bit) are applicable to the spatiality error diffusion, 3 bits (bit) are applicable to the timeliness error diffusion), if pre-semitone (halftone) method that is suitable for is a spatiality, timeliness error-diffusion method and vibration (dither) method, (for example then be divided into 3 unit bits (bit), 2 bits (bit) are applicable to vibration (dither) method, 3 bits (bit) are applicable to the spatiality error-diffusion method, 2 bits (bit) are applicable to the timeliness error-diffusion method), and be applicable to each semitone (halftone) mode.Interconnect the method for aforesaid way, the method of the carry (carry) that will provide by a kind of semitone (halftone) mode and the addition of another kind of semitone (halftone) mode input signal can be provided, at this moment, even the fractional part of the picture signal of input is provided dispersedly, also can obtain the final single output that error is spread equably.
Fig. 6 to Fig. 7 is the structure calcspar in the embodiment of the invention, be to use semitone (halftone) mode, i.e. vibration (dither) method, timeliness error-diffusion method, spatiality error-diffusion method, the mode that the data of fraction part are separated into i bit (bit), j bit (bit), k bit (bit) respectively and are suitable for.
With reference to figure 6, the fraction part of the view data relevant with the GTG value of gamma compensated (reversegamma compensation) (carry out contrary) of input is divided into i bit (bit), j bit (bit), k bit (bit) respectively, by spatiality error diffusion square (block) 32 processing k bit (bit) parts.Output with above-mentioned spatiality error diffusion square (block) 32, be carry (carry) as the input of the temporal error diffusion square (block) 31 of handling j bit (bit) part and provide, with the output of above-mentioned temporal error diffusion square (block) 31, promptly carry (carry) provides as the input of handling i bit (bit) vibration (dither) square (block) 30 partly.Each carry (carry) dispersion can be reflected that the quantization of fraction part (Quantization) value also obtains as the output of vibration (dither) portion 30.Certainly, above-mentioned i, j, k value may be exchanged, and can also be set at multiple bit (bit) unit.
Fig. 7 is the position that spatial error diffusion square (block) 41 and temporal error spread square (block) 42, situation with situation opposed alignment among last Fig. 6, output is provided by vibration (dither) square (block) 40, be provided as its output, the carry of fraction part (carry) is disperseed in time and space brokenly.
Promptly, spatial error method of diffusion and the interrelated and where applicable of temporal error method of diffusion, all can (on 2 dimension mode bases of spatial error diffusion, add timing error and spread this new direction by the dimension of 3 among the present invention error diffusion, therefore can be called 3 dimension error diffusion), prevent the generation and the fixedly generation of lines of flicker (flicker).
As above in the example as can be known, for when carrying out other error diffusion or vibration (dither), be suitable for the carry (carry) that obtains by error diffusion, to determine a kind of error diffusion processing sequence, at this moment, will follow the error diffusion of at first carrying out next bit (bit), then on carrying out when the error diffusion of a bit (bit) or shake (dithering), be suitable for its result, the i.e. order of carry (carry).
Fig. 8 to Fig. 9 is as above-mentioned Fig. 6 to Fig. 7, spatial error is spread square (block) 51,62 with temporal error diffusion square (block) 52,61 and the vibration (dither) 50,60, offer output in the square (block) of same kind, during the square (block) that carry (carry) information is different is imported, be that temporal error is spread 2 kinds of situations that change mutually the position of square (block) and spatial error diffusion square (block), at this moment, weight (weight) can be provided in fractional part specific unit bit (bit) data that provide as the output of each square (block), or, promptly be suitable for weight (weight) in the carry (carry) in the output of each square (block).
Weight (weight) square (block) 53 is provided in j bit (bit) data that provide to spatiality error diffusion square (block) 51 Fig. 8, in carry (carry) output of the timeliness error diffusion square (block) 52 of handling k bit (bit) data, be suitable for weight (weight) square (block) 54, and its value is offered the situation of above-mentioned spatiality error diffusion square (block) 51, and Fig. 9 is suitable for weight (weight) square (block) 63 and offers timeliness error diffusion square (block) 61 in j bit (bit) data, in carry (carry) output of the spatiality error diffusion square (block) 62 of handling k bit (bit) data, be suitable for weight (weight) square (block) 64, and its value offered the situation of above-mentioned timeliness error diffusion square (block) 61.
Used spatiality error diffusion square (block) in the above-mentioned situation, timeliness error diffusion square (block) and vibration (dither) square (block), also used weight (weight) square (block) as required, can also not use vibration (dither) square (block), and only usage space error diffusion square (block) and timeliness error diffusion square (block).
For example, when fraction part is 7 bits (bit), 3 bits (bit) are carried out the spatiality error diffusion,, then the carry (carry) that obtains in the above-mentioned spatiality error diffusion can be applicable in the above-mentioned timeliness error diffusion preceding 4 bits (bit) execution time property error diffusion.In order to break away from the restriction of flicker (flicker), above-mentioned spatiality error diffusion can be used the error diffusion of Z (ZigZag) font mode.
With last opposite, can also cut apart input bit (bit) and handle, but should follow the error diffusion of at first carrying out corresponding to the data of next bit (bit), and then when carrying out data error diffusion corresponding to a last bit (bit), be suitable for its result's order.The bit of above-mentioned fraction part (bit) is if more than number 1 bit (bit), can use the present invention.
Above-mentioned enforcement does not limit the present invention in any form, and all technical schemes that form obtained of taking to be equal to replacement or equivalent transformation all drop within protection scope of the present invention.
Claims (7)
1, the image processing method of plasm display device comprises: the stage that the minority of picture signal of input is partly cut apart with certain bit; The above-mentioned bit base signal of having cut apart is divided into timeliness error diffusion and spatiality error diffusion and execution respectively, the carry that obtains after one of them error diffusion of execution is applicable to the stage of another error diffusion.
2, the image processing method of plasm display device according to claim 1, it is characterized in that above-mentioned timeliness error diffusion method, carry out the quantized error that will take place in the last frame and the input data addition of a new frame repeatedly, and it is carried out quantization and output, thereby obtain the mode of above-mentioned quantized error again.
3, the image processing method of plasm display device according to claim 1, it is characterized in that the above-mentioned carry that draws after the error diffusion of will carrying out was applicable in the stage of another error diffusion, comprised: with the stage of the output and the above-mentioned carry addition of above-mentioned another error diffusion.
4, the image processing method of plasm display device according to claim 1, it is characterized in that the above-mentioned carry that draws after the error diffusion of will carrying out was applicable in the stage of another error diffusion, when above-mentioned fraction part is divided into bit base, by its sequence of positions, carry out the error diffusion of handling corresponding to the data of next bit, utilize its result then, carry out the error diffusion of handling corresponding to the data of a last bit.
5, the image processing method of plasm display device according to claim 1, it is characterized in that in the stage of above-mentioned execution error diffusion, comprise: carry out in the carry and the above-mentioned bit of cutting apart that obtains after above-mentioned 2 kinds of error diffusion, carry out the stage of vibration for the bit of not carrying out error diffusion.
6, the image processing method of plasm display device according to claim 1 is characterized in that stage of above-mentioned partition bit, uses the numeral identical with the kind of the semitone mode of pre-use to cut apart.
7, the image processing method of plasm display device according to claim 1, the stage that it is characterized in that above-mentioned partition bit also comprises: carry out above-mentioned spatiality in advance, among the result of the input of timeliness error diffusion or execution error diffusion, at least one value, give the stage of weight.
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| KR1020050090811A KR20070035885A (en) | 2005-09-28 | 2005-09-28 | Image processing method for plasma display panel |
| KR1020050090811 | 2005-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2006101394449A Pending CN1924970A (en) | 2005-09-28 | 2006-09-22 | Image processing method for plasma display device |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR20070035885A (en) |
| CN (1) | CN1924970A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011000202A1 (en) * | 2009-06-30 | 2011-01-06 | 四川虹欧显示器件有限公司 | Half-tone dithering algorithm |
| WO2014113488A1 (en) * | 2013-01-20 | 2014-07-24 | Qualcomm Incorporated | Spatio-temporal error diffusion for imaging devices |
| CN105282398A (en) * | 2014-11-06 | 2016-01-27 | 宏祐图像科技(上海)有限公司 | Self-adaptive time domain and space domain 3D dithering processing method |
| CN106887220A (en) * | 2015-10-26 | 2017-06-23 | 弘益技术株式会社 | Display panel bearing calibration and correction module |
| CN109389958A (en) * | 2018-12-12 | 2019-02-26 | 惠科股份有限公司 | Display panel driving method and driving device and display device |
| CN113436087A (en) * | 2021-06-04 | 2021-09-24 | 暨南大学 | Image binarization and display method, storage medium and terminal equipment |
-
2005
- 2005-09-28 KR KR1020050090811A patent/KR20070035885A/en not_active Application Discontinuation
-
2006
- 2006-09-22 CN CNA2006101394449A patent/CN1924970A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011000202A1 (en) * | 2009-06-30 | 2011-01-06 | 四川虹欧显示器件有限公司 | Half-tone dithering algorithm |
| WO2014113488A1 (en) * | 2013-01-20 | 2014-07-24 | Qualcomm Incorporated | Spatio-temporal error diffusion for imaging devices |
| US9105226B2 (en) | 2013-01-20 | 2015-08-11 | Qualcomm Incorporated | Spatio-temporal error diffusion for imaging devices |
| CN104937917A (en) * | 2013-01-20 | 2015-09-23 | 高通股份有限公司 | Spatio-temporal error diffusion for imaging devices |
| CN105282398A (en) * | 2014-11-06 | 2016-01-27 | 宏祐图像科技(上海)有限公司 | Self-adaptive time domain and space domain 3D dithering processing method |
| CN105282398B (en) * | 2014-11-06 | 2018-07-06 | 宏祐图像科技(上海)有限公司 | A kind of adaptive time domain spatial domain 3D dithering process methods |
| CN106887220A (en) * | 2015-10-26 | 2017-06-23 | 弘益技术株式会社 | Display panel bearing calibration and correction module |
| CN106887220B (en) * | 2015-10-26 | 2019-10-11 | 弘益技术株式会社 | Display panel bearing calibration and correction module |
| CN109389958A (en) * | 2018-12-12 | 2019-02-26 | 惠科股份有限公司 | Display panel driving method and driving device and display device |
| US11308899B2 (en) | 2018-12-12 | 2022-04-19 | HKC Corporation Limited | Method and device for driving a display panel, and a display device |
| CN113436087A (en) * | 2021-06-04 | 2021-09-24 | 暨南大学 | Image binarization and display method, storage medium and terminal equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20070035885A (en) | 2007-04-02 |
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