CN104125373A - Image processing method of transparent display system - Google Patents
Image processing method of transparent display system Download PDFInfo
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- CN104125373A CN104125373A CN201410323676.4A CN201410323676A CN104125373A CN 104125373 A CN104125373 A CN 104125373A CN 201410323676 A CN201410323676 A CN 201410323676A CN 104125373 A CN104125373 A CN 104125373A
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Abstract
The invention relates to an image processing method of a transparent display system. The image processing method comprises providing the transparent display system which comprises an image processor and a transparent display panel; receiving an input image through the image processor; strengthening the chromaticity of the input image according to the preset weight through the image processor so as to generate an image after the chromaticity strengthening; sharpening the contour of an object in the input image through the image processor so as to generate image sharpening data; adding the image after the chromaticity strengthening and the image sharpening data together through the image processor so as to generate an adjusted image; displaying the adjusted image through the transparent display panel.
Description
Technical field
The present invention discloses a kind of image treatment method of transparent display system, espespecially a kind of image treatment method that increases the transparent display system of image identification degree and panel transparency.
Background technology
Along with scientific and technological progress, various types of flat display apparatus are developed to meet user's demand.Conventional planar display unit is nontransparent display unit, and its principle is to utilize the light-emitting device of display interior to make display show image.Yet, because the flat display unit of tradition is the nontransparent light penetration of not having, therefore display article below will be shown device, cover and cannot show.
For more convenient displaying articles, a kind of transparent display (Transparent Display Device) is developed.Transparent display and conventional planar display unit difference are that transparent display is except can utilizing surround lighting show image, and because transparent display has light penetration, so the article at transparent display rear are visual.Yet because transparent display does not have stable backlight or light emitting source, the shown image of transparent display often can be smudgy.In addition, when transparent display show image, the transparency of transparent display is poor, and this will make the article at transparent display rear be clearly shown.
Based on above-mentioned 2 points; the image that transparent display itself is shown and often have the low problem of image quality to show profile and the image of rear article according to light penetration, therefore developing a kind of light penetration that simultaneously promotes is very important with the transparent display of clearly showing the article at rear and promoting show image definition.
Summary of the invention
The object of the present invention is to provide a kind of image treatment method of transparent display system.
For achieving the above object, technical scheme of the present invention is: a kind of image treatment method of transparent display system, and comprise transparent display system is provided, described transparent display system comprises image processor and transparent display panel; Described image processor receives input image; Described image processor is strengthened the colourity of described input image to produce the image after strengthening colourity according to predefined weight; Described in described image processor sharpening, input the profile of object in image to produce sharpened image data; Described image processor is added to produce the image after adjustment by the image after described strengthening colourity and described sharpened image data; Described transparent display panel shows the image after described adjustment.
The present invention also provides a kind of transparent display system, comprises image processor and transparent display panel; Image processor is in order to receive input image, according to predefined weight, strengthen the colourity of described input image to produce the image after strengthening colourity, described in sharpening, input the profile of object in image to produce sharpened image data, and the image after described strengthening colourity and described sharpened image data are added to produce the image after adjustment; Transparent display panel is to be coupled to described image processor, in order to show the image after described adjustment.
Compared to prior art, the present invention has following beneficial effect: the image treatment method of the present invention's transparent display system can increase the identification of image in transparent display panel, and the transparency while increasing transparent display panel show image; Therefore when the transparent display system of the present invention is applied to display displaying articles, the transparent display system of the present invention can clearly illustrate image and the article of showing rear simultaneously.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of transparent display system of the present invention.
Fig. 2 is the schematic diagram that the image processor of the transparent display system of Fig. 1 carries out the first embodiment of image processing.
Fig. 3 is the schematic diagram that the image processor of the transparent display system of Fig. 1 carries out the second embodiment of image processing.
Fig. 4 is the schematic diagram that the image processor in Fig. 3 embodiment carries out the first transparency reinforcement schedule.
Fig. 5 is the schematic diagram that the image processor in Fig. 3 embodiment carries out the second transparency reinforcement schedule.
Fig. 6 is the schematic diagram that the image processor of the transparent display system of Fig. 1 carries out the 3rd embodiment of image processing.
Fig. 7 is the flow chart of the first image treatment method of the transparent display system of corresponding diagram 3 embodiment.
Fig. 8 is the flow chart of the second image treatment method of the transparent display system of corresponding diagram 6 embodiment.
In figure:
100 transparent display systems
110 image processors
120 transparent display panel
I, Ip input image
Image after I ' adjusts
Image after Ic, It strengthening colourity
L image low frequency data
D image difference data
S image sharpening data
λ prearranged multiple
A, B solid line
700,800 flow charts
710 ~ 770,810 ~ 870 steps.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is specifically described.
Fig. 1 is the schematic diagram of the transparent display system of the present invention.As shown in Figure 1, the transparent display system 100 of the present invention comprises an image processor 110, and a transparent display panel 120.Image processor 110 can carry out image processing to the input image I receiving.And transparent display panel 120 is to be coupled to image processor 110, in order to the image I ' after the adjustment of show image processor 110 outputs.Transparent display system 100 of the present invention can utilize 110 pairs of image processors input image I to carry out image processing, has higher image display quality and higher light penetration (transparency) when image I ' that display floater 120 shows after adjusting.And the step of image processor 110 processing input image I will describe in detail in subsequent paragraphs.
Fig. 2 is the schematic diagram that the image processor of transparent display system of the present invention carries out the first embodiment of image processing.As shown in Figure 2, when image processor 110 receives after input image I, first input image I is produced to an image Ic after strengthening colourity through colourity reinforcement schedule.Theory according to image processing.After one of them enhancing of the saturation of any image (Saturation), form and aspect (Hue) and lightness (Chroma), the stereovision of this image can increase, the distortion that the edge of image itself but (Edge) and highlights/dark portion can produce some degree, its reason is that the dynamic range (Dynamic Range) of image itself diminishes.And the problem of dtmf distortion DTMF that image after strengthening colourity can produce because of strengthening colourity to compensate the edge (Edge) of image itself through a sharpening program (profile reinforcement schedule) in the present embodiment.And the colourity reinforcement schedule of the present embodiment and sharpening program will be specified in down.
Please continue to refer to Fig. 2.After receiving input image I, image processor 110 carries out a colourity reinforcement schedule.In brief, image processor 110 can be according to the colourity of predefined weight strengthening input image I to produce an image Ic after strengthening colourity.In the present embodiment, first image processor 110 can utilize a formula to calculate the original colorimetric parameter of input image I, and this formula can be expressed as down:
Co=1-[min (R, G, B)/max (R, G, B)] formula (1)
Wherein, Co is the original colorimetric parameter of input image I, min (R, G, B) be the minimum gray value in the three primary colors picture element of red, green, blue in input image I, max (R, G, B) be the maximum gray value in the three primary colors picture element of red, green, blue in input image I.
When utilizing formula (1), image processor 110 calculates after the original colorimetric parameter Co in raw video I, image processor 110 calculates the colourity after raw video I weighting according to following formula again, and produce an image Ic after strengthening colourity, this formula can be expressed as down:
Cw=Co+Co*Wc formula (2)
Wherein, Cw is the colorimetric parameter after input image I weighting, and Wc is predefined weight value.As described in paragraph above, after the colourity of image strengthens, the stereovision of this image can increase, but the distortion that the edge of image itself (Edge) and highlights/secretly portion can produce some degree.In order to allow image definition increase and don't can to cause a large amount of distortions at image highlights/dark portion and edge, the weights W c optimum value that the colourity reinforcement schedule of the present embodiment is used is between 0.5 to 3.
Please continue to refer to Fig. 2.In Fig. 2, in dotted portion, be the schematic diagram of sharpening program.As shown in Figure 2, the image Ic after strengthening colourity is first through a low pass filter (Low-pass Filter).And the image of process low pass filter, its physical significance is that image signal medium and low frequency signal is separated out to obtain an image low frequency data L.And image processor 110 then subtracts each other to draw an image difference data D by image Ic and image low frequency data L after strengthening colourity.With the angle of image processing, in image difference data D, implied the profile information of image.Image processor 110 is multiplied by a prearranged multiple λ to obtain image sharpening data S by image difference data D again.This program is equivalent to the profile information of image to strengthen.Finally, image processor 110 is added to draw an image I ' after adjustment by image sharpening data S and the image Ic strengthening after colourity.And image I ' after adjusting is according to the processing of aforesaid colourity reinforcement schedule and sharpening program, the tone of stereovision and a small amount of edge distortion will be possessed.Yet according to the theory of image processing, excessive sharpening (prearranged multiple λ is too large) can produce halo (Halo) effect, this effect can cause image edge to occur the white edge of distortion.Therefore the prearranged multiple λ optimum value that, the sharpening program of the present embodiment is used is between 5 ~ 10.
Yet, in the transparent display system 100 of the present embodiment, although sharpening program can will be inputted in image I because the edge contour information of colourity reinforcement schedule distortion is done and strengthened again, yet according to message theoretical (Information Theory), the edge details of distortion cannot be replied completely, and its detail section of image I ' after therefore adjusting in the present embodiment still has the distortion phenomenon of part.In order to solve the problem of dtmf distortion DTMF of image detail completely, following embodiment is separately provided in the present invention so that the quality of the image I ' after adjusting obtains further improvement.
Fig. 3 is the schematic diagram that the image processor of transparent display system of the present invention carries out the second embodiment of image processing.As shown in Figure 3, when image processor 110 receives after input image I, first input image I is produced to an image Ic after strengthening colourity through colourity reinforcement schedule.Again by strengthening the image Ic after colourity through a transparency reinforcement schedule, and image processor 110 replaces image output after transparency reinforcement schedule image Ic after strengthening colourity again to produce an image It (here in order to express conveniently, the image It after the strengthening colourity after renewal is still called the image after strengthening colourity) after the strengthening colourity after renewal.And transparency reinforcement schedule will describe in detail in back segment.
Fig. 3 is that second embodiment of the invention and the first embodiment maximum difference part are, sharpening program shown in Fig. 3 dotted line is that input image I is carried out to sharpening, finally image sharpening data S and the image It strengthening after colourity is added to produce the image I ' after adjustment.The sharpening step of the embodiment that the step that its sharpening is detailed is same as, therefore will repeat no more in this.And the present embodiment is compared to the advantage of the sharpening step of the first embodiment, because image sharpening data S captures in original input image I, and in original input image I, the marginal information of image is undistorted information.Therefore image sharpening data S will can cannot not reduce via strengthening the edge details distortion causing after colourity because of image completely.After image It after image sharpening data S and strengthening colourity is added, except image is well arranged, its image edge is because increasing substantially its discrimination power through maximized distortion reduction effect.Moreover owing to having utilized transparency reinforcement schedule to increase light penetration in image processing, so the transparent display system 100 of the present embodiment can clearly illustrate image and the article of showing rear simultaneously.
The image processor that Fig. 4 and Fig. 5 are respectively the transparent display system of the present invention carries out the schematic diagram of two kinds of transparency reinforcement schedules.In Fig. 4, X-axis is input GTG value, and Y-axis is output GTG value.If input GTG value and output GTG value are that slope is 1 linear relationship, to input GTG value and equal to export GTG value, image will not done any correction.In the first transparency reinforcement schedule of the present embodiment, image processor 110 can reduce the GTG value of the low GTG picture element in the image Ic after strengthening colourity, and the GTG value of high gray picture element is increased, as solid line A in Fig. 4.After so adjusting, its highlights of image Ic after strengthening colourity can rise with the reduced value (Contrast) of dark portion, and then increases the transparency of transparent display system.This beautiful pattern of transparency reinforcement schedule Cheng Wei Yan that highlights and dark portion reduced value are risen in the present embodiment.
In Fig. 5, X-axis is input GTG value, and Y-axis is output GTG value.If input GTG value and output GTG value are that slope is 1 linear relationship, represent that input GTG value equals to export GTG value, image will not done any correction.In the second transparency reinforcement schedule of the present embodiment, image processor 110 can increase the GTG value of intermediate value GTG picture element in the image Ic after strengthening colourity and the GTG value of high gray picture element, as solid line B in Fig. 5.After so adjusting, its median brightness of image Ic after strengthening colourity and the brightness meeting of highlight area are risen, and then increase the transparency of transparent display system.This transparency reinforcement schedule by median brightness and highlight area brightness rising is called blast pattern in the present embodiment.
Fig. 6 is the schematic diagram that the image processor of transparent display system of the present invention carries out the 3rd embodiment of image processing.Be that with the second embodiment difference transparency reinforcement schedule is before colourity reinforcement schedule, and sharpening program is same as the sharpening program described in the second embodiment, therefore the edge details distortion that image sharpening data S will be can cause after via strengthening colourity because of image and cannot not reducing completely.And transparency reinforcement schedule, colourity reinforcement schedule and sharpening program have described in detail in paragraph before all, therefore will repeat no more in this.Described in the 3rd embodiment, the transparent display system of the present embodiment can also clearly illustrate image and the article of showing rear simultaneously.
Fig. 7 is the flow chart 700 of the first image treatment method of the transparent display system of the present invention.See also Fig. 3, the flow process of the first image treatment method of the present invention is as the following step:
Step 710: transparent display system 100 is provided, comprises image processor 110 and transparent display panel 120;
Step 720: image processor 110 receives input image I;
Step 730: image processor 110 is strengthened the image Ic after colourity according to the colourity of predefined weight Wc strengthening input image I with generation;
Step 740: image processor 110 reduces the GTG value of the low GTG picture element in the image Ic after strengthening colourity and/or the GTG value of high gray picture element is increased, maybe the GTG value of intermediate value GTG picture element in the image Ic after strengthening colourity and the GTG value of high gray picture element are increased to upgrade the image Ic after strengthening colourity, and the image Ic after the strengthening colourity in step of replacing 730;
Step 750: in image processor 110 sharpening input image I, the profile of object is to produce sharpened image data S;
Step 760: image processor 110 is added to produce the image I ' after adjustment by image Ic and sharpened image data S after strengthening colourity; And
Step 770: the image I ' that transparent display panel 120 shows after adjusting.
Fig. 8 is the flow chart 800 of the second image treatment method of the transparent display system of the present invention.See also Fig. 6, the flow process of the second image treatment method of the present invention is as the following step:
Step 810: transparent display system 100 is provided, comprises image processor 110 and transparent display panel 120;
Step 820: image processor 110 receives input image I;
Step 830: image processor 110 reduces the GTG value of the low GTG picture element in input image I and/or the GTG value of high gray picture element is increased, maybe the GTG value of intermediate value GTG picture element in input image I and the GTG value of high gray picture element are increased to upgrade input image I, and replace input image I;
Step 840: image processor 110 is strengthened the image Ic after colourity according to the colourity of predefined weight Wc strengthening input image I with generation;
Step 850: in the input image I in image processor 110 sharpening steps 820, the profile of object is to produce sharpened image data S;
Step 860: image processor 110 is added to produce the image I ' after adjustment by image Ic and sharpened image data S after strengthening colourity; And
Step 870: transparent display panel 120 shows the image I ' after this adjustment.
In sum, the present invention has illustrated a kind of image treatment method and transparent display system of transparent display system, the main idea of image processing is by the colourity strengthening of image, then the image after undistorted image sharpening data is strengthened in conjunction with colourity is to reach stereovision clearly and the image of clear-cut.In addition, the present invention has more utilized two kinds of transparency reinforcement schedules to increase light penetration.Therefore, transparent display system of the present invention can promote light penetration clearly to show the article at rear, and can promote the definition of show image simultaneously.
The foregoing is only preferred embodiment of the present invention, all equalizations of being done according to the present patent application the scope of the claims change and modify, and all should belong to the present invention's covering scope.
Be more than preferred embodiment of the present invention, all changes of doing according to technical solution of the present invention, when the function producing does not exceed the scope of technical solution of the present invention, all belong to protection scope of the present invention.
Claims (10)
1. an image treatment method for transparent display system, is characterized in that: comprise the following step:
One transparent display system is provided, comprises an image processor and a transparent display panel;
Described image processor receives an input image;
Described image processor is strengthened the colourity of described input image to produce the image after a strengthening colourity according to a predefined weight;
Described in described image processor sharpening, input the profile of object in image to produce a sharpened image data;
Described image processor is added to produce the image after an adjustment by the image after described strengthening colourity and described sharpened image data; And
Described transparent display panel shows the image after described adjustment.
2. the image treatment method of transparent display system according to claim 1, is characterized in that: also comprise:
Described image processor reduces the GTG value of the low GTG picture element in the image after described strengthening colourity and/or the GTG value of high gray picture element is increased, and replaces the image after described strengthening colourity.
3. the image treatment method of transparent display system according to claim 1, is characterized in that: also comprise:
Described image processor increases the GTG value of intermediate value GTG picture element in the image after described strengthening colourity and the GTG value of high gray picture element, and replaces the image after described strengthening colourity.
4. the image treatment method of transparent display system according to claim 1, is characterized in that: also comprise:
Described image processor reduces the GTG value of the low GTG picture element in described input image and/or the GTG value of high gray picture element is increased, and replaces described input image.
5. the image treatment method of transparent display system according to claim 1, is characterized in that: also comprise:
Described image processor increases the GTG value of intermediate value GTG picture element in described input image and the GTG value of high gray picture element, and replaces described input image.
6. according to the image treatment method of the transparent display system described in claim 1 to 5 any one, it is characterized in that:
Described image processor is strengthened the colourity of described input image to produce the step of the image after described strengthening colourity according to described predefined weight, comprise:
Described image processor calculates an original colourity of described input image, and wherein this original colourity is to try to achieve according to following formula:
Co?=?1-?[min(R,G,B)/max(R,G,B)]
Wherein, Co is the original colourity of described input image, and min (R, G, B) is the minimum gray value of red, green, blue look picture element in described input image, and max (R, G, B) is the maximum gray value of red, green, blue look picture element in described input image.
7. the image treatment method of transparent display system according to claim 6, is characterized in that:
Described image processor is strengthened the colourity of described input image to produce the step of the image after described strengthening colourity according to described predefined weight, also comprise:
Described image processor by the described original colourity of described input image be multiplied by 1 and described predefined weight sum to produce the image after described strengthening colourity, wherein, described predefined weight is between 0.5 to 3.
8. according to the image treatment method of the transparent display system described in claim 1 to 5 any one, it is characterized in that:
Described in described image processor sharpening, input the profile of object in image to produce the step of described sharpened image data, comprise:
Utilize a raw video data that a low pass filter filters described input image to obtain an image low frequency data of described input image;
The described raw video data of described input image and described image low frequency data are subtracted each other to obtain an image difference data; And
This image difference data is multiplied by a prearranged multiple to obtain this sharpened image data.
9. the image treatment method of transparent display system according to claim 8, is characterized in that:
Described prearranged multiple is between 5 ~ 10.
10. a transparent display system, comprises:
One image processor, in order to receive an input image, according to a predefined weight, strengthen the colourity of described input image to produce the image after a strengthening colourity, described in sharpening, input the profile of object in image to produce a sharpened image data, and the image after described strengthening colourity and described sharpened image data are added to produce the image after an adjustment, and
One transparent display panel, is coupled to described image processor, in order to show the image after described adjustment.
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Application publication date: 20141029 |