CN105306930A - Brightness measurement method, brightness measurement device and image quality regulation technology employing the device and the method - Google Patents
Brightness measurement method, brightness measurement device and image quality regulation technology employing the device and the method Download PDFInfo
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Abstract
The present invention provides a brightness measurement method capable of accurately measuring the brightness of each pixel even if pixel images of a display panel are mutually overlapped on the imaging surface of a camera. On the basis of the output of the image pixel with respect to the central part, the central exposure coefficient representing the brightness of the central part of the pixel image is calculated. On the basis of the output of the image pixel with respect to the surrounding part of the pixel image, the surrounding exposure coefficient representing the brightness of the surrounding part of the pixel image. All the pixels of the display panel are divided into groups, and each group is lightened in order and imaged through the camera, and the brightness is calculated based on the imaging images, the central exposure coefficient and the surrounding exposure coefficient.
Description
Technical field
The present invention relates to a kind of the briliancy assay method and the briliancy determinator thereof that measure the briliancy (luminance) of the pixel (pixel) of display floater, and a kind of picture quality regulation technology adopting the method and device.
Background technology
As everyone knows, due to manufacture deviation, the such as display floater such as liquid crystal panel and organic EL panel display uneven (luminance nonuniformity and color inequality).When each pixel of display floater has R, during the sub-pix of G and B, even if the R in each pixel, the relative brightness relation between G and B does not have difference, if the absolute brightness relation between neighbor is different, and, also can there is luminance nonuniformity.In addition, if between neighbor, the R of each pixel, the relative brightness relation between G and B is different, then irregular colour can occur.Especially, in the organic EL panel of consistency of thickness being difficult to the organic compound layer making each pixel, due to the thickness of inequality, display may be there is uneven, therefore be difficult to realize large screen dimensions.
For by reducing the uneven technology improving the picture quality of display floater of this display, such as, Patent Document 1 discloses a kind of briliancy assay method.In the method, light all pixels (being called " picture element " (PictureElement) in this patent documentation) of this display floater, these pixels image in multiple imaging points (ImagingPoints) (Fig. 5 with reference to this patent) of CCD camera, and calculate the briliancy of these pixels based on the luminance data at multiple imaging point place.Generated for reducing the uneven correction data of display by the briliancy of each pixel calculated, and revise the input signal of display floater according to these correction data, thus improve the picture quality of display floater.
Patent documentation
Patent documentation 1:JP2010-203889A
Summary of the invention
Patent documentation 1 supposes that each pixel of display floater independently forms image at the imaging surface of camera, and adjacent pixel image does not overlap each other.But in fact, due to aberration and other factors of camera, adjacent pixel image overlaps each other really.Therefore, in order to correctly measure the briliancy of pixel, if do not eliminate the impact of the pixel adjacent with the pixel on picture element, just directly cannot use the output of the picture element on imaging surface, wherein this imaging surface existing the image of pixel.
The present invention is based on above-mentioned situation to complete, its object is to provide a kind of briliancy assay method, briliancy determinator, and a kind of picture quality regulation technology adopting described method and apparatus, even if when the pixel image on display floater overlaps each other on the imaging surface of camera, the method and device correctly can measure the briliancy of each pixel.
In order to realize above-mentioned target, according to claim 1ly the invention provides a kind of briliancy assay method, it comprises:
Single pixel image-forming step, when the pixel of display floater is by when being provided with the camera imaging of solid state image sensor, light one or more pixels of display floater, and by pixel described in camera imaging, make each pixel image cover multiple picture elements on the imaging surface of described camera, and described pixel image does not overlap each other;
Factor calculation procedure, based on the output of the one or more picture elements corresponding with the core of pixel image, computer center's factor, the core briliancy that described center exposure coefficient table is shown in the pixel image of imaging in described single pixel image-forming step accounts for the ratio of the briliancy of described whole pixel image, and, based on the output of the one or more picture elements corresponding with the peripheral part of pixel image, calculate periphery factor, described periphery factor represents that the peripheral part briliancy of pixel image accounts for the ratio of the briliancy of described whole pixel image;
All pixels of display floater are divided into many groups by all pixel image-forming steps, then each group of pixel are lighted successively, and by pixel described in camera imaging;
Intensity calculation step, based on the image be imaged onto in all pixel image-forming steps, center exposure coefficient and periphery factor, calculates the briliancy of all pixels of display floater.
The another kind of execution mode of described briliancy assay method also comprises: calibration steps, use camera imaging by lighting the intended pixel of display floater and the calibrating pattern (alignmentpattern) that obtains, the image detecting described calibrating pattern is presented on which picture element of described camera, and obtains the corresponding relation between the pixel of display floater and the picture element of camera.
The another kind of execution mode of described degree assay method also comprises: amplify and image-forming step, relative to single pixel image-forming step, amplify described pixel, the pixel that imaging is amplified, and obtain the briliancy of the whole pixel image for calculating described center exposure coefficient and described periphery factor.
Another embodiment of the invention is a kind of briliancy determinator, and it comprises:
Control unit, it controls the imaging lighting and control the camera being provided with solid state imaging sensor of the pixel of display floater;
Computing unit, it calculates based on the image by described camera imaging;
Wherein, when the pixel of display floater is by camera imaging, described control unit lights one or more pixels of display floater, and allow pixel described in described camera imaging, make each pixel image cover multiple picture element on the imaging surface of described camera and described pixel image does not overlap each other;
Described computing unit is then based on the output of one or more picture elements corresponding to the core of the pixel image with imaging, computer center's factor, described center exposure coefficient represents that the core briliancy of described pixel image accounts for the ratio of the briliancy of whole pixel image; And based on the output of the one or more picture elements corresponding with the peripheral part of described pixel image, calculate periphery factor, described periphery factor represents that the briliancy of the peripheral part of described pixel image accounts for the ratio of the briliancy of described whole pixel image;
All pixels of display floater are divided into many groups by described control unit, then light each group successively, allow pixel described in described camera imaging;
Described computing unit then based on the image of imaging, described center exposure coefficient and described periphery factor, calculates the briliancy of all pixels of described display floater.
According to the another kind of execution mode of described briliancy determinator, described control unit by camera imaging by lighting the intended pixel of display floater and the calibrating pattern obtained, described computing unit is presented at which picture element of described camera by the image detecting described calibrating pattern, obtains the corresponding relation between the pixel of described display floater and the picture element of described camera.
According to the another kind of execution mode of described briliancy determinator, relative to the pixel of the output of the output for obtaining the one or more picture elements corresponding with the core of pixel image and the one or more picture elements corresponding with the peripheral part of pixel image, described control unit amplifies described pixel, and the pixel that imaging is amplified, then described computing unit obtains the briliancy of whole pixel image based on the image of imaging, and calculates described center exposure coefficient and described periphery factor.
Another embodiment of the invention is a kind of correction data generating method, and it comprises:
Single pixel image-forming step, when by when being provided with the pixel of camera imaging display floater of solid state imaging sensor, light one or more pixels of display floater, and by pixel described in described camera imaging, make each pixel image cover multiple picture elements on the imaging surface of described camera, and described pixel image does not overlap each other;
Factor calculation procedure, based on the output of the one or more picture elements corresponding with the core of pixel image, computer center's factor, the core briliancy that described center exposure coefficient table is shown in the pixel image of imaging in described single pixel image-forming step accounts for the ratio of the briliancy of described whole pixel image; And based on the output of the one or more picture elements corresponding with the peripheral part of pixel image, calculate periphery factor, described periphery factor represents that the peripheral part briliancy of pixel image accounts for the ratio of the briliancy of described whole pixel image;
All pixels of display floater are divided into many groups by all pixel image-forming steps, then each group of pixel are lighted successively, and by pixel described in camera imaging;
Intensity calculation step, based on the image be imaged onto in all pixel image-forming steps, center exposure coefficient and periphery factor, calculates the briliancy of all pixels of display floater, and
Revise data genaration step, based on the input signal of display floater described in the briliancy correction calculated in intensity calculation step, generate and revise data to reduce the luminance nonuniformity of described display floater.
The another kind of execution mode of described correction data generating method, it also comprises: calibration steps, use camera imaging by lighting the intended pixel of display floater and the calibrating pattern that obtains, the image detecting described calibrating pattern is presented on which picture element of described camera, and obtains the corresponding relation between the pixel of display floater and the picture element of camera.
The another kind of execution mode of described correction data generating method, it also comprises: amplify and image-forming step, relative to single pixel image-forming step, amplify described pixel, the pixel that imaging is amplified, and the briliancy obtaining the whole pixel image for calculating described center exposure coefficient and described periphery factor.
Revise an another kind of execution mode for data generating device, comprising:
Control unit, it controls the imaging lighting and control the camera being provided with solid state imaging sensor of the pixel of display floater;
Computing unit, it calculates based on the image by described camera imaging;
Revise data generating unit, it is generated by the input signal revising display floater and revises data, to reduce the luminance nonuniformity of display floater;
Wherein, when the pixel of display floater is by camera imaging, described control unit lights one or more pixels of display floater, and allow pixel described in described camera imaging, make each pixel image cover multiple picture element on the imaging surface of described camera and described pixel image does not overlap each other;
Described computing unit is then based on the output of one or more picture elements corresponding to the core of the pixel image with imaging, computer center's factor, described center exposure coefficient represents that the core briliancy of described pixel image accounts for the ratio of the briliancy of whole pixel image; And based on the output of the one or more picture elements corresponding with the peripheral part of described pixel image, calculate periphery factor, described periphery factor represents that the briliancy of the peripheral part of described pixel image accounts for the ratio of the briliancy of described whole pixel image,
All pixels of display floater are divided into many groups by described control unit, then light each group successively, allow pixel described in described camera imaging;
Described computing unit then based on the image of imaging, described center exposure coefficient and described periphery factor, calculates the briliancy of all pixels of described display floater;
Described correction data generating unit generates correction data based on the briliancy of all pixels of display floater.
According to the another kind of execution mode of described correction data generating device, described control unit by camera imaging by lighting the intended pixel of display floater and the calibrating pattern obtained, described computing unit is presented on which picture element of camera by the image detecting described calibrating pattern, obtains the corresponding relation between the pixel of described display floater and the picture element of described camera.
According to the another kind of execution mode of described correction data generating device, relative to the pixel of the output of the output for obtaining the one or more picture elements corresponding with the core of pixel image and the one or more picture elements corresponding with the peripheral part of pixel image, described control unit amplifies described pixel, and the pixel that imaging is amplified, then described computing unit obtains the briliancy of whole pixel image based on the image of imaging, and calculates described center exposure coefficient and described periphery factor.
Another embodiment of the invention is a kind of method for making image quality adjustment type display floater, comprising:
Single pixel image-forming step, when by when being provided with the pixel of camera imaging display floater of solid state imaging sensor, light one or more pixels of display floater, and by pixel described in described camera imaging, each pixel image is made to cover multiple picture elements on the imaging surface of described camera, and described pixel image does not overlap each other
Factor calculation procedure, based on the output of the one or more picture elements corresponding with the core of pixel image, computer center's factor, the core briliancy that described center exposure coefficient table is shown in the pixel image of imaging in described single pixel image-forming step accounts for the ratio of the briliancy of described whole pixel image; And based on the output of the one or more picture elements corresponding with the peripheral part of pixel image, calculate periphery factor, described periphery factor represents that the peripheral part briliancy of pixel image accounts for the ratio of the briliancy of described whole pixel image;
All pixels of display floater are divided into many groups by all pixel image-forming steps, then each group of pixel are lighted successively, and by pixel described in camera imaging;
Intensity calculation step, based on the image of imaging in all pixel image-forming steps, center exposure coefficient and periphery factor, calculates the briliancy of all pixels of display floater;
Revise data genaration step, based on the input signal of display floater described in the briliancy correction calculated in intensity calculation step, generate and revise data, to reduce the luminance nonuniformity of described display floater;
Revise data storing steps, described correction data be stored in the memory cell of picture quality regulating circuit,
Installation steps, are installed on display floater by described picture quality regulating circuit, make described picture quality regulating circuit based on described correction data correction input signal.
The described another kind of execution mode for making image quality adjustment type display floater also comprises: calibration steps, use camera imaging by lighting the intended pixel of display floater and the calibrating pattern that obtains, the image detecting described calibrating pattern is presented on which picture element of camera, and obtains the corresponding relation between the pixel of display floater and the picture element of camera.
The described another kind of execution mode for making image quality adjustment type display floater also comprises: amplify and image-forming step, relative to single pixel image-forming step, amplify described pixel, the pixel that imaging is amplified, and the briliancy obtaining the whole pixel image for calculating described center exposure coefficient and described periphery factor.
Another embodiment of the invention is a kind of picture quality adjustment type display floater, comprising: display floater; And being provided with the picture quality regulating circuit of memory cell, described cell stores has correction data, for revising the input signal of display floater, uneven with the display reducing display floater; Wherein, the correction data that described cell stores has the briliancy based on all pixels of display floater and generates, the briliancy of all pixels of described display floater calculates in the following way: when the pixel of display floater is by when being provided with the camera imaging of solid state imaging sensor, light one or more pixels of display floater, and by pixel described in camera imaging, make each pixel image cover multiple picture elements on the imaging surface of described camera, and described pixel image does not overlap each other; Based on the output computer center factor of one or more picture elements corresponding to the core of the pixel image of imaging, described center exposure coefficient represents that the briliancy of the core of pixel image accounts for the ratio of the briliancy of whole pixel image; Output based on the one or more picture elements corresponding with the peripheral part of pixel image calculates periphery factor, and described periphery factor represents that the briliancy of the peripheral part of pixel image accounts for the ratio of the briliancy of whole pixel image; All pixels of display floater are divided into many groups, then successively each group of pixel are lighted, and by pixel described in camera imaging; Based on the image of imaging, center exposure coefficient and periphery factor, calculate the briliancy of all pixels of display floater.
According to another embodiment of the invention, the pixel of display floater, by camera imaging, makes the pixel of described display floater not overlap each other on the imaging surface of camera; Computer center's factor and periphery factor, described center exposure coefficient represents that the core briliancy of pixel image accounts for the ratio of the briliancy of whole pixel image, and described periphery factor represents that the briliancy of the peripheral part of pixel image accounts for the ratio of the briliancy of whole pixel image; Then all pixels of display floater are divided into many groups, then successively each group are lighted, by camera imaging pixel; And, the briliancy of all pixels of display floater is calculated based on the image of imaging, center exposure coefficient and periphery factor.Therefore, even if when the pixel image of display floater overlaps each other on the imaging surface of camera, the briliancy of Accurate Determining pixel also can be carried out by the impact eliminated between adjacent pixel image.
According to another embodiment of the invention, by camera imaging by lighting the intended pixel of display floater and the calibrating pattern obtained, obtain the corresponding relation between the pixel of display floater and the picture element of camera, and detect the picture element of the camera that the image of described calibrating pattern shows.Therefore, by this corresponding relation, the accuracy of relation between imaging results (output of picture element) and the briliancy of each pixel can be improved, and the briliancy measuring each pixel more accurately can be realized.
According to another embodiment of the invention, obtained the briliancy of whole pixel image by the pixel image amplifying pixel image (making pixel image cover a large amount of picture element on imaging surface) and imaging amplification.Therefore, it is possible to suppress the decline of the accuracy of measurement caused by the non-light receiving element between the picture element be configured on imaging surface, and the briliancy more correctly measuring each pixel can be realized.
According to another embodiment of the invention, the pixel of display floater, by camera imaging, makes the pixel image of display floater not overlap each other on the imaging surface of camera; Described computer center factor and periphery factor, described center exposure coefficient represents that the briliancy of the core of pixel image accounts for the ratio of the briliancy of whole pixel image, and described periphery factor represents that the briliancy of the peripheral part of pixel image accounts for the ratio of the briliancy of whole pixel image; Then all pixels of display floater are divided into many groups, then successively each group are lighted, then use pixel described in camera imaging; The briliancy of all pixels of display floater is calculated based on the image of imaging, center exposure coefficient and periphery factor.Therefore, even if when the pixel image of display floater overlaps each other on the imaging surface of camera, the briliancy of Accurate Determining pixel also can be carried out by the impact eliminated between adjacent pixel image.In addition, the briliancy due to the pixel based on display floater generates revises data, to reduce the luminance nonuniformity of display floater, therefore, it is possible to generate the correction data making the picture quality of display floater regulate with high accuracy.
According to another embodiment of the invention, by camera imaging by lighting the intended pixel of display floater and the calibrating pattern obtained, obtain the corresponding relation between the pixel of display floater and the picture element of camera, and detect the picture element of the camera that the image of described calibrating pattern shows.Therefore, by this corresponding relation, the accuracy of relation between imaging results (output of picture element) and the briliancy of each pixel can be improved, and the briliancy measuring each pixel more accurately can be realized.In addition, the briliancy due to the pixel based on display floater generates revises data, to reduce the luminance nonuniformity of display floater, therefore, it is possible to generate the correction data making the picture quality of display floater regulate with high accuracy.
According to another embodiment of the invention, obtained the briliancy of whole pixel image by the pixel image amplifying pixel image (making pixel image cover a large amount of picture element on imaging surface) and imaging amplification.Therefore, it is possible to suppress the decline of the accuracy of measurement caused by the non-light receiving element between the picture element be exposed in imaging, and the briliancy more correctly measuring each pixel can be realized.In addition, the briliancy due to the pixel based on display floater generates revises data, to reduce the luminance nonuniformity of display floater, therefore, it is possible to generate the correction data making the picture quality of display floater regulate with high accuracy.
According to another embodiment of the invention, owing to generating correction data, and the picture quality regulating circuit storing these correction data is installed in display floater, therefore, it is possible to regulate the picture quality of display floater with high accuracy.
According to another embodiment of the invention, owing to generating correction data, and the picture quality regulating circuit storing these correction data is installed in display floater, therefore, it is possible to regulate the picture quality of display floater with high accuracy.
According to another embodiment of the invention, owing to generating correction data, and the picture quality regulating circuit storing these correction data is installed in display floater, therefore, it is possible to regulate the picture quality of display floater with high accuracy.
According to the present invention, even if the pixel image of display floater overlaps each other on the imaging surface of camera, also can the briliancy of Accurate Determining pixel, and the picture quality of display floater can be improved by the briliancy measured.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the briliancy determinator involved by embodiment 1.
Fig. 2 is the flow chart of the briliancy assay method according to embodiment 1 example.
Fig. 3 is the exemplary plot of calibrating pattern.
Fig. 4 is the exemplary plot of the factor mensuration pattern amplified.
Fig. 5 is the exemplary plot of the pixel image when pixel image defocuses on imaging surface.
Fig. 6 is the exemplary plot of the pixel image when pixel image focuses on imaging surface.
Fig. 7 is the exemplary plot of the briliancy mensuration pattern amplified.
Fig. 8 is the exemplary plot that pixel image overlaps each other on imaging surface.
Fig. 9 is the schematic diagram of the correction data generating device according to embodiment 2 example.
Figure 10 is correction data generating method according to embodiment 2 example, for the method for making image quality adjustment type organic EL panel and the flow chart of picture quality control method.
Description of reference numerals:
1 briliancy determinator
2 organic EL panels (display floater)
3 control units
4 computing units
5 memory cell
6 pattern generating apparatus
7 cameras
8 imaging surfaces
9a to 9p picture element
10 revise data generating device
11ROM write device
12ROM (memory cell)
13 picture quality regulating circuits
14 picture quality adjustment type organic EL panels (picture quality adjustment type display floater)
Embodiment
Describe for implementing the specific embodiment of the present invention referring to accompanying drawing.
Fig. 1 illustrates the briliancy determinator according to the present embodiment.This briliancy determinator 1 measures the briliancy of all pixels of organic EL panel 2, and (each pixel of this organic EL panel 2 is made up of R, G and B sub-pix, and assuming that pixel comprises these sub-pixs in the present invention), comprise control unit 3, computing unit 4 and memory cell 5.This control unit 3 controls the display of organic EL panel 2 by pattern generating apparatus 6, and controls the imaging of black and white solid-state imaging camera 7, and this camera 7 configures towards organic EL panel 2.Computing unit 4 carries out various forms of calculating based on the image etc. of camera 7 imaging, and memory cell 5 stores the imaging results of camera 7 and the result of calculation of computing unit 4.
As shown in Figure 2, when briliancy determinator 1 measures the briliancy of the pixel of organic EL panel 2 in pixel shown in red period, control unit 3 first indicator diagram generating apparatus 6 shows calibrating pattern PA (alignmentpattern), this calibrating pattern PA is presented on the organic EL panel 2 of Fig. 3 (step 1 (in the drawings, this step represents with " S.1 ", is below equally applicable to other steps)).Calibrating pattern PA is red squares form point D is the pattern that matrix arranges, and it is formed by lighting the predetermined pixel (R sub-pix) of the ad-hoc location be positioned on organic EL panel 2.
Control unit 3 makes camera 7 imaging show the organic EL panel 2 (step 2) of calibrating pattern PA, computing unit 4 is based on the image of imaging, the image that picture element on the imaging surface of camera 7 shows test point D exists, and position corresponding relation (step 3) obtained between the pixel of organic EL panel 2 and the picture element of camera 7, store corresponding relation (step 4) by memory cell 5.
Then, control unit 3 indicator diagram generating apparatus 6 shows factor and measures pattern P k1, and this factor measures on pattern P k1 display organic EL panel 2 in the diagram (step 5).It is by the pattern lighting the most upper left pixel of organic EL panel 2, the right of this pixel obtains every the pixel of 3 pixels every the pixel of 3 pixels and the following of these pixels that factor measures pattern P k1; Control unit 3 makes camera 7 be defocused to picture factor and measures pattern P k1 (step 6).Although different according to the position of the pixel image on imaging surface, the shape and size of the pixel image on the imaging surface of camera 7 can be different, but suppose that pixel image has the size of 4 × 4 picture elements of roughly overlaid camera 7 herein, such as, as shown in Figure 5, the picture element 9a to 9p on the imaging surface 8 of pixel image I overlaid camera 7.In addition, adjacent pixel image does not overlap each other on the imaging surface of camera 7.
Computing unit 4 based on imaging in step 5 image and obtain the briliancy (step 7) of whole pixel image.Such as, the briliancy of whole pixel image I can obtain according to the output of picture element 9a to 9p.This acquisition be lit and constitute the briliancy of whole image that factor measures the pixel of pattern P k1 and be stored in memory cell 5 (step 8).
Then, control unit 3 makes camera 7 focus on and Imagewise exposure coefficient determination pattern P k1 (step 9).As mentioned above, although be positioned at the difference of the position on imaging surface according to pixel image, the shape and size of the pixel image on the imaging surface of camera 7 can be different from each other, supposes that pixel image has the size of 3 × 3 picture elements of roughly overlaid camera 7 herein.Such as, as shown in Figure 6, the picture element 9a to 9c on the imaging surface 8 of pixel image I overlaid camera 7,9e to 9g, 9i to 9k.That is, with image be defocused to picture situation (Fig. 5) compared with, the size of pixel image I reduces (in other words, cover the step 6 of more picture element at pixel image than step 9, pixel is exaggerated imaging).In addition, adjacent pixel image does not overlap each other simultaneously.
Computing unit 4 based on imaging in step 9 image and obtain the briliancy (step 10) of pixel image core, obtained briliancy (step 11) is stored by memory cell 5, obtain the briliancy (step 12) of 8 peripheral parts of pixel image, then store obtained briliancy (step 13) by memory cell 5.Herein, the briliancy of pixel image core is the briliancy of the output of the picture element be assumed to residing for the center depending on pixel image, and the briliancy of 8 peripheral parts of pixel image is the briliancy being assumed to the output depending on 8 picture elements adjacent with the picture element residing for described center.Therefore, in figure 6, the briliancy of the core of pixel image I is output according to picture element 9f and obtains, the briliancy of the 1st peripheral part of pixel image I is output according to picture element 9a and obtains, the briliancy of the 2nd peripheral part of pixel image I is output according to picture element 9b and obtains, the briliancy of the 3rd peripheral part of pixel image I is output according to picture element 9c and obtains, the briliancy of the 4th peripheral part of pixel image I is output according to picture element 9e and obtains, the briliancy of the 5th peripheral part of pixel image I is output according to picture element 9g and the briliancy obtaining the 6th peripheral part of pixel image I is output according to picture element 9i and the briliancy obtaining the 7th peripheral part of pixel image I is output according to picture element 9j and obtains, the briliancy of the 8th peripheral part of pixel image I is output according to picture element 9k and obtains.
In addition, computing unit 4 comes computer center's factor (step 14) by the briliancy of the core of the pixel image of acquisition in step 10 divided by the briliancy of the whole pixel image obtained in step 7, calculated center exposure coefficient (step 15) is stored again by memory cell 5, calculate periphery factor (step 16) by each briliancy of 8 peripheral parts of the pixel image of acquisition in step 12 divided by the briliancy of the whole pixel image of acquisition in step 7 again, then store 8 calculated periphery factors (step 17) by memory cell 5.
Then, briliancy determinator 1 carries out similar step to following pattern from step 5 to step 15, described pattern is: measure in pattern P k1 the 1st, the right pixel of the pixel lighted and the factor that obtains measures pattern P k2 by lighting at factor, the 2nd, the right pixel of the pixel lighted is measured in pattern P k1 and the factor that obtains measures pattern P k3 at factor by lighting, the 3rd, the right pixel of the pixel lighted is measured in pattern P k1 and the factor that obtains measures pattern P k4 at factor by lighting, following 1st pixel of the pixel lighted is measured in pattern P k1 and the factor that obtains measures pattern P k5 at factor by lighting, following 1st pixel of the pixel lighted is measured in pattern P k2 and the factor that obtains measures pattern P k6 at factor by lighting, following 1st pixel of the pixel lighted is measured in pattern P k3 and the factor that obtains measures pattern P k7 at factor by lighting, following 1st pixel of the pixel lighted is measured in pattern P k4 and the factor that obtains measures pattern P k8 at factor by lighting, following 2nd pixel of the pixel lighted is measured in pattern P k1 and the factor that obtains measures pattern P k9 at factor by lighting, following 2nd pixel of the pixel lighted is measured in pattern P k2 and the factor that obtains measures pattern P k10 at factor by lighting, following 2nd pixel of the pixel lighted is measured in pattern P k3 and the factor that obtains measures pattern P k11 at factor by lighting, following 2nd pixel of the pixel lighted is measured in pattern P k4 and the factor that obtains measures pattern P k12 at factor by lighting, following 3rd pixel of the pixel lighted is measured in pattern P k1 and the factor that obtains measures pattern P k13 at factor by lighting, following 3rd pixel of the pixel lighted is measured in pattern P k2 and the factor that obtains measures pattern P k14 at factor by lighting, following 3rd pixel of the pixel lighted is measured in pattern P k3 and the factor that obtains measures pattern P k15 at factor by lighting, following 3rd pixel of the pixel lighted is measured in pattern P k4 and the factor that obtains measures pattern P k16 at factor by lighting.Then briliancy determinator 1 to each pixel computer center factor and 8 periphery factors (being collectively referred to as below " factor "), then stores calculated factor (step 18) by memory cell 5.Correspondingly, totally 9 factors have been calculated to all pixels of organic EL panel 2.
Simultaneously, due to the lens aberration etc. of camera 7, due to the pixel image on the imaging surface of camera 7 position (on imaging surface pixel image center of gravity residing for the position of picture element) or position phase (skew between the picture element residing for the center of gravity of described center of gravity and pixel image), factor can change.That is, factor depends on four variablees, i.e. the position δ X of pixel image and δ Y, and position phase α X and α Y; Because different pixels has different positions and position phase, the factor of the pixel obtained in step 5 is to 18 can not easily for step 23 etc. described afterwards.Therefore, computing unit 4 carrys out based on the factor of obtained each pixel the factor (step 19) calculating diverse location and position phase to each region in organic EL panel 2, and by memory cell 5, calculated factor is stored in factor table (step 20).Based on following reason, each region in organic EL panel 2 is calculated to the factor of diverse location and position phase.Depend on the region (depending on the region on the imaging surface of camera 7) of organic EL panel 2, the shape of pixel image is roughly circle, ellipse etc.Correspondingly, prepare pixel image and be roughly a large amount of position in region and the factor of position phase that circular a large amount of position in region and the factor of position phase and pixel image are roughly ellipse, make to obtain the factor being roughly circular pixel image when needing by being roughly a circular region interpolation representational factor to pixel image, and make to obtain the factor being roughly oval pixel image when needing by being roughly an oval region interpolation representational factor to pixel image.
When obtaining factor table, control unit 3 indicator diagram generating apparatus 6 shows briliancy and measures pattern P B1, and this briliancy measures on organic EL panel 2 that pattern P B1 is presented at Fig. 7 (step 21).Briliancy measures pattern P B1 and is presented at the red image on organic EL panel 2, and the most upper left pixel (R sub-pix) by lighting organic EL panel 2, pixel (R sub-pix) to the right every a pixel from this pixel, and from these pixels downwards every a pixel pixel (R sub-pix) and obtain, wherein, when organic EL panel 2 has high resolution camera 7 imaging surface on neighbor image overlap each other.
Control unit 3 makes camera 7 imaging show the organic EL panel 2 (step 22) of briliancy mensuration pattern P B1, computing unit 4 calculates based on the image of this imaging the briliancy (step 23) that composition briliancy measures the pixel of pattern P B1, then stores calculated briliancy (step 24) by memory cell 5.
Especially, based on the corresponding relation between the pixel of the organic EL panel 2 obtained in step 3 and the picture element of camera 7, the factor table that generates in step 19,20, which pixel image of computing unit 4 identifiable design organic EL panel 2 is presented on the picture element of camera 7.That is, because a certain any pixel image can understanding organic EL panel 2 according to this corresponding relation shows centered by a certain picture element of camera 7, and can understand this " any pixel image " according to this factor table and cover to be somebody's turn to do which peripheral picture element of " given picture element ", computing unit 4 can understand the influence degree of each picture element by the given pixel of organic EL panel 2 of camera 7.In addition, according to this mensuration, the output (intensity of the light that each picture element receives) of each picture element of camera 7 can be understood, but not know to form the briliancy that briliancy measures each pixel of pattern P B1 in organic EL panel 2.Such as, as shown in Figure 8, when the picture element 9f of camera 7 corresponds to the core of pixel image I5, during the peripheral part of pixel image I1 to I4 and I6 to I9, following equation is set up:
B9f＝K9X1+K8X2+K7X3+K6X4+K5X5+K4X6+K3X7+K2X8+K1X9
Wherein, B9f represents the briliancy of the output corresponding to picture element 9f,
X5 represents the briliancy of pixel image I5, and K5 represents the factor of core,
X1 represents the briliancy of pixel image I1, and K9 represents the factor of the peripheral part of picture element 9f,
X2 represents the briliancy of pixel image I2, and K8 represents the factor of the peripheral part of picture element 9f,
X3 represents the briliancy of pixel image I3, and K7 represents the factor of the peripheral part of picture element 9f,
X4 represents the briliancy of pixel image I4, and K6 represents the factor of the peripheral part of picture element 9f,
X5 represents the briliancy of pixel image I5, and K5 represents the factor of the peripheral part of picture element 9f,
X6 represents the briliancy of pixel image I6, and K4 represents the factor of the peripheral part of picture element 9f,
X7 represents the briliancy of pixel image I7, and K3 represents the factor of the peripheral part of picture element 9f,
X8 represents the briliancy of pixel image I8, and K2 represents the factor of the peripheral part of picture element 9f,
X9 represents the briliancy of pixel image I9, and K1 represents the factor of the peripheral part of picture element 9f.
Because this equation is also set up other picture elements, the simultaneous linear equations about unknown number X that computing unit 4 can be made up of these equations solution obtains and forms the briliancy that briliancy measures the pixel of pattern P B1.
Afterwards, briliancy determinator 1 pair of briliancy measures pattern P B2, briliancy measures pattern P B3 and briliancy measures pattern P B4 execution to step 21 to 24 similar steps, described briliancy measures pattern P B2 and is pixel by lighting on the right of the pixel be lit that briliancy measures in pattern P B1 and obtains, described briliancy measures pattern P B3 and obtains by lighting briliancy and measuring the following pixel of the pixel be lit in pattern P B1, described briliancy measures pattern P B4 and obtains by lighting briliancy and measuring the following pixel of the pixel be lit in pattern P B2, and then calculate composition briliancy mensuration pattern P B2, the briliancy (step 24) of each pixel of PB3 and PB4.Therefore, the briliancy of all pixels of organic EL panel 2 has been calculated.
Although be described above the method that briliancy determinator 1 measures the briliancy (briliancy of all R sub-pixs) of the pixel of shown in red organic EL panel 2, briliancy determinator 1 also can measure the briliancy (briliancy of all G sub-pixs) of the pixel of shown in green organic EL panel 2 and be shown as the briliancy (briliancy of all B sub-pixs) of pixel of blue organic EL panel 2.
The briliancy assay method of execution according to the briliancy determinator 1 of the present embodiment, the pixel of organic EL panel 2, by camera 7 imaging, makes the pixel image of organic EL panel 2 not overlap each other on the imaging surface 8 of camera 7; Computer center's factor and periphery factor, wherein, described center exposure coefficient represents that the briliancy of the core of described pixel image accounts for the ratio of the briliancy of whole pixel image, and described periphery factor represents that the briliancy of the peripheral part of pixel image accounts for the ratio of the briliancy of whole pixel image; Then all pixels of display floater 2 are divided into many groups (briliancy measures pattern P B1, PB2, PB3 and PB4), then successively each group are lighted, and by camera 7 imaging; The briliancy of all pixels of organic EL panel 2 is calculated based on the image of imaging, heart factor and periphery factor.Therefore, even if the pixel image of organic EL panel 2 overlaps each other on the imaging surface 8 of camera 7, the briliancy of each pixel of Accurate Determining also can be carried out by the impact eliminated between adjacent pixel image.
In addition, in briliancy determinator 1, by camera 7 imaging by lighting the intended pixel of organic EL panel 2 and the calibrating pattern PA obtained obtains corresponding relation between the pixel of organic EL panel 2 and the picture element of camera 7, then the image of testing calibration pattern P A is presented on which picture element of described camera 7, and the use of this corresponding relation adds the accuracy of relation between imaging results and pixel briliancy.In addition, because pixel image is exaggerated and imaging in step 6, then the briliancy of whole pixel image is obtained in step 7, therefore, it is possible to suppress the decline of accuracy of measurement caused by the non-light receiving element between the picture element be configured on imaging surface 8, and can the briliancy of each pixel of Accurate Determining.
Embodiment 2
Fig. 9 example is according to the correction data generating device of the present embodiment.This correction data generating device 10 ROM write device 11 is connected to the briliancy determinator 1 according to embodiment 1 by extra and configured.As shown in Figure 10, the same with briliancy determinator 1, this correction data generating device 10 measures the briliancy (step 1 is to 25) of all pixels of organic EL panel 2, then computing unit 4 generates correction data (step 26), to reduce the display inequality (luminance nonuniformity) of organic EL panel 2 based on the briliancy of each pixel.The correction data generated write ROM (non-volatile storage) (step 27) by ROM write device 11, then manufacture picture quality adjustment type organic EL panel 14 by picture quality regulating circuit 13, its picture quality regulating circuit 13 is provided with the ROM12 (step 28) being configured in organic EL panel 2.
In this picture quality adjustment type organic EL panel 14, when received image signal (step 29), picture quality regulating circuit 13 revises with reference to the correction data of write ROM12 the picture signal (input signal) inputing to organic EL panel 2, thus realize the reduction of the display inequality of organic EL panel 2, and have adjusted picture quality (step 30).
The correction data generating method undertaken by the correction data generating device 10 of the present embodiment, with the method for the manufacture of picture quality adjustment type organic EL panel 14, in the same manner as in Example 1, measure the briliancy of each pixel of organic EL panel 2, and generate correction data based on the briliancy of measured each pixel, uneven with the display reducing organic EL panel 2.
Although be described above exemplary embodiment of the present invention, the present invention is not limited to above execution mode, is not departing under purport of the present invention and can carry out suitable change.
Such as, the panel regulated for picture quality is not limited to organic EL panel, also can be liquid crystal panel, plasma display (PDP), projecting apparatus etc.
In addition, camera is also not limited to grayscale camera, also can be color camera.Camera also can not defocus, but amplifies pixel image by the movement etc. of zoom, camera, and the image that imaging is exaggerated.
Further, the definition of the core of pixel image and the briliancy of peripheral part is not limited to above description.
Claims (16)
1. a briliancy assay method, is characterized in that, it comprises:
Single pixel image-forming step, when the pixel of display floater is by when being provided with the camera imaging of solid state imaging sensor, light one or more pixels of described display floater, and by pixel described in camera imaging, make each pixel image cover multiple picture element on the imaging surface of described camera and described pixel image does not overlap each other;
Factor calculation procedure, based on the output of the one or more picture elements corresponding with the core of described pixel image, computer center's factor, the briliancy that described center exposure coefficient table is shown in the core of the described pixel image of imaging in described single pixel image-forming step accounts for the ratio of the briliancy of whole pixel image; Based on the one or more picture elements corresponding with the peripheral part of described pixel image, calculate periphery factor, described periphery factor represents that the briliancy of the peripheral part of described pixel image accounts for the ratio of the briliancy of whole pixel image;
All pixels of described display floater are divided into many groups, then pixel are lighted successively by all pixel image-forming steps, and by pixel described in camera imaging; And
Intensity calculation step, based on the image of imaging in described all pixel image-forming steps, described center exposure coefficient and described periphery factor, calculates the briliancy of all pixels of described display floater.
2. briliancy assay method according to claim 1, it is characterized in that, also comprise: calibration steps, use described camera imaging by lighting the intended pixel of described display floater and the calibrating pattern obtained, the image detecting described calibrating pattern is presented on which picture element of described camera, and obtains the corresponding relation between the pixel of described display floater and the picture element of described camera.
3. briliancy assay method according to claim 1, it is characterized in that, also comprise: amplify and image-forming step, relative to described single pixel image-forming step, amplify described pixel, the pixel that imaging is amplified, and the briliancy obtaining the whole pixel image for calculating described center exposure coefficient and described periphery factor.
4. a briliancy determinator, is characterized in that, comprising:
Control unit, it controls the imaging lighting and control the camera being provided with solid state imaging sensor of the pixel of display floater; And
Computing unit, it calculates based on the image by described camera imaging,
Wherein, when the pixel of display floater described in described camera imaging, described control unit lights one or more pixels of described display floater, and allow pixel described in described camera imaging, each pixel image is made to cover multiple picture element on the imaging surface of described camera and described pixel image does not overlap each other
Described computing unit is then based on the output of one or more picture elements corresponding to the core of the pixel image with imaging, computer center's factor, described center exposure coefficient represents that the briliancy of the core of described pixel image accounts for the ratio of the briliancy of whole pixel image; And calculate periphery factor based on the output of one or more picture elements corresponding with the peripheral part of described pixel image, described periphery factor represents that the briliancy of the peripheral part of described pixel image accounts for the ratio of the briliancy of whole pixel image,
All pixels of described display floater are divided into many groups by described control unit, then pixel are lighted successively, then make pixel described in described camera imaging,
Then described computing unit calculates the briliancy of all pixels of described display floater based on the image of imaging, described center exposure coefficient and described periphery factor.
5. briliancy determinator according to claim 4, it is characterized in that, described control unit allows described camera imaging by lighting the intended pixel of described display floater and the calibrating pattern obtained, described computing unit is presented on which picture element of described camera by the image detecting described calibrating pattern, obtains the corresponding relation between the pixel of described display floater and the picture element of described camera.
6. briliancy determinator according to claim 4, it is characterized in that, described control unit is relative to the pixel of the output of the output for obtaining the one or more picture elements corresponding with the core of described pixel image and the one or more picture elements corresponding with the peripheral part of described pixel image, amplify described pixel and the imaging pixel of amplifying, then described computing unit obtains the briliancy of whole pixel image based on the image of imaging and calculates described center exposure coefficient and described periphery factor.
7. a correction data generating method, is characterized in that, comprising:
Single pixel image-forming step, when by when being provided with the pixel of camera imaging display floater of solid state imaging sensor, light one or more pixels of described display floater, and by pixel described in described camera imaging, make each pixel image cover multiple picture elements on the imaging surface of described camera, and described pixel image does not overlap each other;
Factor calculation procedure, based on the output computer center factor of the one or more picture elements corresponding with the core of described pixel image, the briliancy that described center exposure coefficient table is shown in the core of the described pixel image of imaging in described single pixel image-forming step accounts for the ratio of the briliancy of whole pixel image; And calculate periphery factor based on the output of one or more picture elements corresponding with the peripheral part of described pixel image, described periphery factor represents that the briliancy of the peripheral part of described pixel image accounts for the ratio of the briliancy of whole pixel image;
All pixels of described display floater are divided into many groups by all pixel image-forming steps, then each group of pixel are lighted successively, and by pixel described in camera imaging;
Intensity calculation step, calculates the briliancy of all pixels of described display floater based on the described image of imaging in described all pixel image-forming steps, described center exposure coefficient and described periphery factor; And
Revise data genaration step, based on the input signal of display floater described in the briliancy correction calculated in described intensity calculation step, generate and revise data, to reduce the luminance nonuniformity of described display floater.
8. correction data generating method according to claim 7, it is characterized in that, also comprise: calibration steps, use described camera imaging by lighting the intended pixel of described display floater and the calibrating pattern obtained, the image detecting described calibrating pattern is presented on which picture element of described camera, and obtains the corresponding relation between the pixel of described display floater and the picture element of described camera.
9. correction data generating method according to claim 7, it is characterized in that, also comprise: amplify and image-forming step, relative to described single pixel image-forming step, amplify described pixel, the pixel that imaging is amplified, and the briliancy obtaining the whole pixel image for calculating described center exposure coefficient and described periphery factor.
10. revise a data generating device, it is characterized in that, comprising:
Control unit, it controls the imaging lighting and control the camera being provided with solid state imaging sensor of the pixel of display floater;
Computing unit, it calculates based on the image by described camera imaging; And
Revise data generating unit, it generates correction data by the input signal revising described display floater, to reduce the luminance nonuniformity of described display floater,
Wherein, when the pixel of described display floater is by described camera imaging, described control unit lights one or more pixels of described display floater, and allow pixel described in described camera imaging, each pixel image is made to cover multiple picture element on the imaging surface of described camera and described pixel image does not overlap each other
Described computing unit is then based on the output computer center factor of one or more picture elements corresponding to the core of the pixel image with imaging, and described center exposure coefficient represents that the briliancy of the core of described pixel image accounts for the ratio of the briliancy of whole pixel image; And calculate periphery factor based on the output of one or more picture elements corresponding with the peripheral part of described pixel image, described periphery factor represents that the briliancy of the peripheral part of described pixel image accounts for the ratio of the briliancy of whole pixel image,
All pixels of described display floater are divided into many groups by described control unit, then each group of pixel are lighted successively, by pixel described in described camera imaging,
Then described computing unit calculates the briliancy of all pixels of described display floater based on the image of imaging, described center exposure coefficient and described periphery factor,
Described correction data generating unit generates correction data based on the briliancy of all pixels of described display floater.
11. correction data generating devices according to claim 10, it is characterized in that, described control unit makes described camera imaging by lighting the intended pixel of described display floater and the calibrating pattern obtained, described computing unit is presented on which picture element of described camera by the image detecting described calibrating pattern, obtains the corresponding relation between the pixel of described display floater and the picture element of described camera.
12. correction data generating devices according to claim 10, it is characterized in that, described control unit is relative to the pixel of the output of the output for obtaining the one or more picture elements corresponding with the core of described pixel image and the one or more picture elements corresponding with the peripheral part of described pixel image, amplify described pixel, and the pixel that imaging is amplified, then described computing unit obtains the briliancy of whole pixel image based on the image of imaging, and calculates described center exposure coefficient and described periphery factor.
13. 1 kinds, for the method for making image quality adjustment type display floater, is characterized in that, comprising:
Single pixel image-forming step, when by when there is the pixel of camera imaging display floater of solid state imaging sensor, light one or more pixels of described display floater, and by pixel described in described camera imaging, make each pixel image cover multiple picture elements on the imaging surface of described camera, and described pixel image does not overlap each other;
Factor calculation procedure, based on the output computer center factor of the one or more picture elements corresponding with the core of described pixel image, the briliancy that described center exposure coefficient table is shown in the core of the pixel image be imaged onto in described single pixel image-forming step accounts for the ratio of the briliancy of whole pixel image; And calculate periphery factor based on the output of one or more picture elements corresponding with the peripheral part of described pixel image, described periphery factor represents that the briliancy of the peripheral part of described pixel image accounts for the ratio of the briliancy of whole pixel image;
All pixels of described display floater are divided into many groups by all pixel image-forming steps, then each group of pixel are lighted successively, and by pixel described in camera imaging;
Intensity calculation step, calculates the briliancy of all pixels of described display floater based on the image of imaging in described all pixel image-forming steps, described center exposure coefficient and described periphery factor;
Revise data genaration step, based on the input signal of display floater described in the briliancy correction that described intensity calculation step calculates, generate correction data, to reduce the luminance nonuniformity of described display floater;
Revise data storing steps, described correction data are stored in the memory cell of picture quality regulating circuit; And
Installation steps, are installed on described display floater by described picture quality regulating circuit, make described picture quality regulating circuit based on input signal described in described correction data correction.
14. methods for making image quality adjustment type display floater according to claim 13, it is characterized in that, also comprise: calibration steps, use described camera imaging by lighting the intended pixel of described display floater and the calibrating pattern obtained, the described image detecting described calibrating pattern is presented on which picture element of described camera, and obtains the corresponding relation between the pixel of described display floater and the picture element of described camera.
15. methods for making image quality adjustment type display floater according to claim 13, it is characterized in that, also comprise: amplify and image-forming step, relative to described single pixel image-forming step, amplify described pixel, the pixel that imaging is amplified, and the briliancy obtaining the whole pixel image for calculating described center exposure coefficient and described periphery factor.
16. 1 kinds of picture quality adjustment type display floaters, is characterized in that, comprising:
Display floater; And
Picture quality regulating circuit, it is provided with memory cell, and described cell stores has correction data, for revising the input signal of described display floater, uneven with the display reducing described display floater,
Wherein, the correction data that described cell stores has the briliancy based on all pixels of described display floater and generates, the briliancy of all pixels of described display floater calculates in the following way: when the pixel of display floater is by when being provided with the camera imaging of solid state imaging sensor, light one or more pixels of described display floater, and by pixel described in described camera imaging, make each pixel image cover multiple picture element on the imaging surface of described camera and described pixel image does not overlap each other; Again based on the output computer center factor of one or more picture elements corresponding to the core of the pixel image of imaging, described center exposure coefficient represents that the briliancy of the core of pixel image accounts for the ratio of the briliancy of whole pixel image; And calculate periphery factor based on the output of one or more picture elements corresponding with the peripheral part of described pixel image, described periphery factor represents that the briliancy of the peripheral part of described pixel image accounts for the ratio of the briliancy of whole pixel image; Again all pixels of described display floater are divided into many groups, then successively each group of pixel are lighted, and by pixel described in camera imaging; The briliancy of all pixels of described display floater is calculated based on the image of imaging, described center exposure coefficient and described periphery factor.
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| TW201600835A (en) | 2016-01-01 |
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