CN1568018A - Apparatus and method for color amendment - Google Patents
Apparatus and method for color amendment Download PDFInfo
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- CN1568018A CN1568018A CN 03148675 CN03148675A CN1568018A CN 1568018 A CN1568018 A CN 1568018A CN 03148675 CN03148675 CN 03148675 CN 03148675 A CN03148675 A CN 03148675A CN 1568018 A CN1568018 A CN 1568018A
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Abstract
The invention discloses a color correction equipment and method that is used in making the color of the first-image displayed in the image forming unit accord with the color of the second-image displayed in the image forming unit. The image-forming unit takes the first-image, and the image is a kind of signal with many first-color signals that accords with the first color mode. Furthermore, the image-forming unit converts many first-color signals into many second-color signals that accords with the second-color mode, and outputs many second-color signals to the display unit. The display unit displays the second-image on the basis of the second-color signals inputted. For concreteness, the first-color rule includes R, G, B(red, green, blue) signals, and the second-color rule includes Y, Cb, Cr(brightness, red chromatic difference, blue chromatic difference) signals.
Description
Technical field
The invention relates to a kind of color correction equipment and method, particularly about allow the color that is shown in the image on the Equipment for forming image be shown in a display unit on the consistent color correction equipment and the method for color of image.
Background technology
No matter the image display as television set and projector of any brand, brightness (Brightness), contrast (Contrast), form and aspect (Tint), colour saturation (Color) and these five basic functions of adjusting of sharpness (Sharpness) all can be provided usually, and its purpose is to allow the user can adjust the image quality of the image that will be presented in television set or projector.
The image original device that image display connected have the DVD/VCD projector or as the digitized video of digital video camera and digital camera form device or the like.And the manufacturer of above-mentioned these image original devices all can make its image demonstration of image original device that this manufacturer produced can both present identical result through a correction program before production marketing.Yet do not have a common calibration standard between the different vendor, so when the user used the different image original device image output of above-mentioned different vendor to image display, brightness, contrast, form and aspect, colour saturation and sharpness that must the manual adjustment image display or the like adjusted parameter to obtain acceptable image frame.Therefore very inconvenience for the user.
Therefore, when digitized videos such as digital camera and digital camera form device output influence to this image display, carry out a colour correction program, so that the color that is shown in this Equipment for forming image image is consistent with the color of image on being shown in a display unit.
Summary of the invention
Therefore, a purpose of the present invention provides a kind of color correction equipment, and color correction equipment can allow the color that is shown in the image on the Equipment for forming image consistent with the color of image on being shown in an image display.In addition, when Equipment for forming image when respectively image output is to different image display,, can make the shown color of each image display all consistent with the color of image on the Equipment for forming image by color correction equipment of the present invention.
According to color correction equipment of the present invention, color correction equipment is to be positioned within the Equipment for forming image (Image forming apparatus), color correction equipment is in order to make the color that is shown in first image of 1 on the Equipment for forming image consistent with the color of one second image on being shown in a display unit, first image by the Equipment for forming image acquisition is made of an array of pixels (Array of pixels), first color-values that each pixel in the array of pixels has (Color values) is to meet one first color mode (Color space), first color mode comprises N first color element (Color components), Equipment for forming image and convert the color-values of each pixel of first image to meet one second color mode second color-values respectively, second color mode comprises N second color element, Equipment for forming image and export second color-values of first image to display unit, display unit shows second image based on second color-values of first image immediately, N is a natural number, and color correction equipment comprises a storage module, one modular converter, one output module, one acquisition module, one measurement module, one computing module and a correcting module.
Storage module is in order to storing at least N the 3rd image, and the 3rd color-values that each the 3rd image has is only to be made of one first color element in N first color element of first color mode.
Modular converter is to convert the 4th color-values that meets second color mode respectively in order to the 3rd color-values that meets first color mode with each the 3rd image.
Output module is to export display unit to from Equipment for forming image respectively in order to the 4th color-values with the 3rd image, wherein display unit shows N the 4th image at least respectively based on the 4th color-values of the 3rd image, and each the 4th image is one the 3rd image in corresponding the 3rd image.
Acquisition module is to be shown in the 4th image on the display unit in order to acquisition respectively, and then obtains N the 5th image at least, and each the 5th image is one the 4th image in corresponding the 4th image.
Measurement module is in order to measure the 5th color-values that each the 5th image meets first color mode respectively.
Computing module is in order to the 3rd color-values that meets first color mode according to grade in an imperial examination three images and the 5th color-values that the 5th image meets first color mode, calculates a group correction coefficient.
Correcting module is in order to revising second color-values of first image according to group correction coefficient, so obtain first image through revising and meet second color-values of the correction of second color mode.
Wherein, in first image after second color-values of revising and meet the correction of second color mode is obtained, Equipment for forming image exports second color-values of the correction of first image to display unit, and promptly show second image again based on second color-values of the correction of first image with rear indicator, the color of second image on causing the color that is shown in first image on the Equipment for forming image and being shown in display unit is consistent.
Therefore color correction equipment of the present invention can allow the color that is shown in the image on the Equipment for forming image consistent with the color of image on being shown in a display unit.
Can be further understood by following detailed Description Of The Invention and appended accompanying drawing about the advantages and spirit of the present invention.
Description of drawings
Fig. 1 is the schematic diagram of color correction equipment of the present invention.
Fig. 2 is the schematic diagram of the color correction equipment of another specific embodiment of the present invention.
Fig. 3 A is the 3rd an image schematic diagram of color correction equipment.
Fig. 3 B is the 5th an image schematic diagram of color correction equipment.
Fig. 4 is a color correction method flow diagram of the present invention.
Fig. 5 is a color correction method flow diagram of the present invention.
The drawing reference numeral explanation
10: Equipment for forming image 12,13: color correction equipment
Image 16 in 14: the first: display unit
20: the first color-values of 18: the second images
24: storage module 26: modular converter
28: output module 30: acquisition module
31: measurement module 32: computing module
34: correcting module
36a, 36b, 36c, 37: the three images
38a, 38b, 38c: the 4th image
40a, 40b, 40c, 41: the five images
42a, 42b, 42c: the first color block
44a, 44b, 44c: the second color block
R3, G3, B3, R3a, G3a, B3a: the 3rd color-values
Y4, Cr4, Cb4, Y4a, Cr4a, Cb4a: the 4th color-values
R5, G5, B5, R5a, G5a, B5a: the 5th color-values
Gb, Gr: correction factor
Y ', Cb ', Cr ': second color-values
Y ", Cb ", Cr ": second color-values of correction
Rc, Gc, Bc: first revises color-values
Embodiment
See also Fig. 1, Fig. 1 is the schematic diagram of color correction equipment of the present invention.The color correction equipment 12 that is used in the Equipment for forming image 10 (Image forming apparatus) of the present invention, be in order to make the color that is shown in one first image 14 on the Equipment for forming image 10 consistent with the color of one second image 18 on being shown in a display unit 16, by first image 14 of Equipment for forming image 10 acquisition by an array of pixels (Array of pixels, be not shown in Fig. 1) constitute, first color-values 20 (Color values) that each pixel in this array of pixels has is to meet one first color mode (Color space, be not shown in Fig. 1), this first color mode comprises three first color element (R, G, B, be not shown in Fig. 1, Color components), Equipment for forming image 10 and convert the color-values of each pixel of first image 14 to meet one second color mode (not being shown in Fig. 1) the second color-values Y ' respectively, Cb ', Cr ', this second color mode comprises three second color element Y, Cb, Cr, Equipment for forming image 10 and with the second color-values Y ' of first image 14, Cb ', Cr ' exports display unit 16 to, display unit 16 is immediately based on the second color-values Y ' of first image 14, Cb ', Cr ' shows second image 18, and color correction equipment 12 comprises a storage module 24, one modular converter 26, one output module 28, one acquisition module 30, one measurement module 31, one computing module 32 and a correcting module 34.
Storage module 24 is that the 3rd color-values R3, G3, the B3 that each the 3rd image 36a, 36b, 36c have only is made of three first color element R, G of this first color mode, one first color element among the B in order to storage at least three the 3rd image 36a, 36b, 36c.
Modular converter 26 is to convert the 4th color-values Y4, Cr4, the Cb4 that meets this second color mode respectively in order to the 3rd color-values R3, G3, the B3 that meet this first color mode with each the 3rd image 36a, 36b, 36c.
Output module 28 is to export display unit 16 to from Equipment for forming image 10 respectively in order to the 4th color-values Y4, Cr4, Cb4 with the 3rd image 36a, 36b, 36c, wherein display unit 16 shows at least three the 4th image 38a, 38b, 38c respectively based on the 4th color-values Y4, Cr4, the Cb4 of the 3rd image 36a, 36b, 36c, and each the 4th image 38a, 38b, 38c are the 3rd image 36a, 36b, the 36c among corresponding the 3rd image 36a, 36b, the 36c.
Acquisition module 30 is in order to capture the 4th image 38a, 38b, the 38c that is shown on the display unit 16 respectively, and then obtaining at least three the 5th image 40a, 40b, 40c, each the 5th image 40a, 40b, 40c are the 4th image 38a, 38b, the 38c among corresponding the 4th image 38a, 38b, the 38c.
Measurement module 31 is in order to measure the 5th color-values R5, G5, the B5 that each the 5th image 40a, 40b, 40c meet this first color mode respectively.
Computing module 32 is the 5th color-values R5, G5, the B5 that meet this first color mode in order to the 3rd color-values R3, G3, B3 and the 5th image 40a that meets this first color mode according to the 3rd image 36a, 36b, 36c, 40b, 40c, calculates a group correction coefficient Gb, Gr.
Correcting module 34 is in order to revising the second color-values Y ', Cb ', the Cr ' of first image 14 according to correction factor Gb, Gr, so obtain first image 14 through revising and meet the second color-values Y of the correction of second color mode ", Cb ", Cr ".
Wherein, in first image 14 through revising and meet the second color-values Y of the correction of this second color mode ", Cb ", Cr " obtain after; Equipment for forming image 10 is with the second color-values Y of the correction of first image 14 ", Cb ", Cr " export display unit 16 to, and with rear indicator 16 promptly based on the second color-values Y of the correction of first image 14 ", Cb ", Cr " show second image 18 again, the color of second image 18 on causing the color that is shown in first image 14 on the Equipment for forming image 10 and being shown in display unit 16 is consistent.
In addition, computing module 32 is according to the 3rd color-values R3, G3, B3, and the 5th color-values R5, G5, B5, and calculates correction factor Gb, Gr via following formula.
Correcting module 34 then uses correction factor Gb, Gr, and via following formula calculating, revise the second color-values Y ', Cb ', the Cr ' of first image 14, with obtain first image 14 through revising and meet the second color-values Y of the correction of second color mode ", Cb ", Cr ".
Y″＝Y′；
Cb "=Cb ' * Gb; And
Cr″＝Cr′×Gr。
And, Equipment for forming image 10 is with the second color-values Y of the correction of first image 14 ", Cb ", Cr " export display unit 16 to; and with rear indicator 16 promptly based on the second color-values Y of the correction of first image 14 ", Cb ", Cr " show second image 18 again, the color of second image 18 on causing the color that is shown in first image 14 on the Equipment for forming image 10 and being shown in display unit 16 is consistent.
Therefore color correction equipment 12 of the present invention can allow the color that is shown in the image on the Equipment for forming image consistent with the color of image on being shown in a display unit.
See also Fig. 2, Fig. 3 A and Fig. 3 B, Fig. 2 is the schematic diagram of the color correction equipment 13 of another specific embodiment of the present invention.Fig. 3 A is the 3rd image 37 schematic diagrames of color correction equipment 13.Fig. 3 B is the 5th image 41 schematic diagrames of color correction equipment 13.The storage module 24 of color correction equipment 13 is in order to store one the 3rd image 37, the 3rd image 37 has at least three first color block 42a, 42b, 42c (Color blocks), and each the first color block 42a among the first color block 42a, 42b, the 42c, the 3rd color-values R3a that 42b, 42c have, G3a, B3a only are made of three first color element R, G of this first color mode, one first color element among the B respectively.Therefore, also all have the corresponding second color block 44a, 44b, 44c with the 3rd image 37 corresponding the 5th images 41.
Modular converter 26 is to convert the 4th color-values Y4a, Cr4a, the Cb4a that meets this second color mode respectively in order to the 3rd color-values R3a, G3a, the B3a that meet this first color mode with the 3rd image 37, and see through output module 28 and export display unit 16 to, and to demonstrate one the 4th image, 39, the four images 39 on display unit 16 are corresponding the 3rd images 37.
30 acquisitions of acquisition module are shown in the 4th image 39 on the display unit 16, and then to obtain one the 5th image, 41, the five images 41 be corresponding the 4th image 39 and the 3rd image 37, therefore.The 5th image 41 is to have at least three second color block 44a, 44b, 44c, and the second color block 44a, 44b, 44c are the first color block 42a, 42b, the 42c corresponding to the 3rd image 37.
Measurement module 31 is in order to measure the second color block 44a, the 5th color-values R5a of 44b, 44c, G5a, the B5a that the 5th image 41 meets this first color mode respectively.
Computing module 32, then according to the first color block 42a, the 3rd color-values R3a of 42b, 42c, G3a, the B3a of the 3rd image 37, and the second color block 44a, the 5th color-values R5a of 44b, 44c, G5a, the B5a of the 5th image 41, calculate a group correction coefficient Gb, Gr.
Therefore color correction equipment 13 of the present invention can allow the color that is shown in the image on the Equipment for forming image consistent with the color of image on being shown in a display unit.
See also Fig. 4, Fig. 4 is a color correction method flow diagram of the present invention.Below detailed description is applied to the modification method of the color correction equipment of the present invention 12 of Fig. 1.The inventive method comprises the following step:
S50: continue and handle at least three the 3rd image 36a that are pre-stored in the Equipment for forming image 10,36b, 36c, each the 3rd image 36a, 36b, the 3rd color-values R3 that 36c has, G3, B3 is only by three first color element R of this first color mode, G, one first color element among the B constitutes, the three image 36a of decision about handling, 36b, 36c and meet first of this first color mode and revise color-values Rc, Gc, Bc causes the 3rd image 36a that is handling that is shown on the Equipment for forming image 10,36b, the color of 36c be shown in display unit 16 on and corresponding one the 4th image 38a that is handling, 38b, the color unanimity of 38c.
S52: the 3rd color-values R3, G3, B3 and the 3rd image 36a, the first correction color-values Rc of 36b, 36c, Gc, Bc according to the 3rd image 36a, 36b, 36c calculate a group correction coefficient Gb, Gr.
S54: revise the second color-values Y ', Cb ', the Cr ' of first image 14 according to correction factor Gb, Gr, and then obtain the second color-values Y that first image 14 meets the correction of this second color mode ", Cb ", Cr ".
S56: with the second color-values Y of the correction of first image 14 ", Cb ", Cr " export display unit 16 to from Equipment for forming image 10.
S58: based on the second color-values Y of the correction of first image 14 ", Cb ", Cr " show second image 18 again on display unit 16, the color of second image 18 on causing the color that is shown in first image 14 on the Equipment for forming image 10 and being shown in display unit 16 is consistent.
See also Fig. 5, Fig. 5 is a color correction method flow diagram of the present invention.S50 step shown in Figure 2 further comprises the following step:
S501: the 3rd image 36a that will handle, the 3rd color-values R3 of 36b, 36c, G3, B3 are set at existing color-values, and convert this existing color-values to meet this second color mode the 4th color-values Y4, Cr4, Cb4.
S502: the 3rd image 36a that will handle, the 4th color-values Y4 of 36b, 36c, Cr4, Cb4 export display unit 16 to from Equipment for forming image 10.
S503:, show that corresponding the 4th image 38a that is handling, 38b, 38c are on display unit 16 based on the 3rd image 36a that is handling, the 4th color-values Y4 of 36b, 36c, Cr4, Cb4.
S504: capture the 4th image 38a, 38b, the 38c that just is being shown on the display unit 16 by Equipment for forming image 10, and then obtain corresponding the 3rd image 36a, one the 5th image 40a of 36b, 36c, 40b, the 40c that is handling.
S505: measure corresponding the 3rd image 36a, the 5th image 40a of 36b, 36c that is handling, the 5th color-values R5, G5, the B5 that 40b, 40c meet this first color mode.
S506: whether the value of chromatism of judging the 5th color-values R5, G5, B5 and the existing color-values that are measured closes in a tolerance interval, and judged result is for negating, then should existing color-values replace, and repeating step S501 is to step S506 with the 5th color-values R5, G5, B5.
S507: decision will be closed in the 5th color-values R5, G5, the B5 of a tolerance interval with the value of chromatism of existing color-values and will be considered as the first correction color-values Rc, Gc, Bc.
Therefore color correction method of the present invention can allow the color that is shown in the image on the Equipment for forming image consistent with the color of image on being shown in a display unit.
By the above detailed description of preferred embodiments, be to wish to know more to describe feature of the present invention and spirit, and be not to come category of the present invention is limited with above-mentioned disclosed preferred embodiment.On the contrary, its objective is that hope can contain in the category of scope of claim of being arranged in of various changes and tool equality institute of the present invention desire application.
Claims (22)
1. one kind is used in the interior color correction equipment of an Equipment for forming image, this color correction equipment is in order to make the color that is shown in one first image on this Equipment for forming image consistent with the color of one second image on being shown in a display unit, this first image by this Equipment for forming image acquisition is made of an array of pixels, first color-values that each pixel in this array of pixels has is to meet one first color mode, this first color mode comprises N first color element, this Equipment for forming image and convert the color-values of each pixel of this first image to meet one second color mode second color-values respectively, this second color mode comprises N second color element, this Equipment for forming image and export second color-values of this first image to this display unit, this display unit shows this second image based on second color-values of this first image immediately, N is a natural number, and this color correction equipment comprises:
One storage module, this storage module are in order to storing at least N the 3rd image, and the 3rd color-values that each the 3rd image has is only to be made of one first color element in N the color element of this first color mode;
One modular converter, this modular converter are to convert the 4th color-values that meets this second color mode respectively in order to the 3rd color-values that meets this first color mode with each the 3rd image;
One output module, this output module is to export this display unit to from this Equipment for forming image respectively in order to the 4th color-values with these grade in an imperial examination three images, wherein this display unit shows N the 4th image at least respectively based on the 4th color-values of these grade in an imperial examination three images, and each the 4th image is one the 3rd image in corresponding these grade in an imperial examination three images;
One acquisition module, this acquisition module are to be shown in these grade in an imperial examination four images on this display unit in order to acquisition respectively, and then obtain N the 5th image at least, and each the 5th image is one the 4th image in corresponding these grade in an imperial examination four images;
One measurement module, this measurement module are in order to measure the 5th color-values that each the 5th image meets this first color mode respectively;
One computing module, this computing module are in order to the 3rd color-values that meets this first color mode according to these grade in an imperial examination three images and the 5th color-values that this grade in an imperial examination five images meet this first color mode, calculate a group correction coefficient; And
One correcting module, this correcting module are in order to revising second color-values of this first image according to this group correction coefficient, so obtain this first image through revising and meet second color-values of the correction of this second color mode;
Wherein, in this first image after second color-values of revising and meet the correction of this second color mode is obtained, this Equipment for forming image exports second color-values of the correction of this first image to this display unit, and this display unit promptly shows this second image again based on the color-values through revising of this first image subsequently, and the color of second image on causing the color that is shown in first image on this Equipment for forming image and being shown in this display unit is consistent.
2. color correction equipment as claimed in claim 1, wherein this first color mode comprises R, G, B (red, green, blue) color element.
3. color correction equipment as claimed in claim 2, wherein this second color mode comprises Y, Cb, Cr (brightness, blue poor, red poor) color element.
4. color correction equipment as claimed in claim 3, wherein on behalf of these grade in an imperial examination three images, R3, G3, B3 meet the 3rd color-values of this first color mode respectively, R5, G5, B5 these grade in an imperial examination five images respectively meet the 5th color-values of this first color mode, and Gb, Gr represent this group correction coefficient and calculate and get via following formula:
5. color correction equipment as claimed in claim 4, wherein Y ', Cb ', Cr ' represent second color-values of this first image, Y respectively ", Cb ", Cr " represent respectively this first image through revising and meet the second color-values Y of the correction of this second color mode ", Cb ", Cr " and calculate and get via following formula:
Y″＝Y′；
Cb "=Cb ' * Gb: and
Cr″＝Cr′×Gr。
6. color correction method, this method is in order to make the color that is shown in one first image on the Equipment for forming image consistent with the color of one second image on being shown in a display unit, this first image by this Equipment for forming image acquisition is made of an array of pixels, first color-values that each pixel in this array of pixels has is to meet one first color mode, this first color mode comprises N first color element, this Equipment for forming image and convert the color-values of each pixel of this first image to meet one second color mode second color-values respectively, this second color mode comprises N second color element, this Equipment for forming image and export second color-values of this first image to this display unit, this display unit shows this second image based on second color-values of this first image immediately, N is a natural number, and this method comprises the following step:
(a) continue and handle N at least the 3rd image that is pre-stored in this Equipment for forming image, the 3rd color-values that each the 3rd image has is only to be made of one first color element in N the color element of this first color mode, decision is about the 3rd image handled and meet first of this first color mode and revise color-values, on causing the color that is shown in the 3rd image of handling on this Equipment for forming image and being shown in this display unit and consistent to the color of one the 4th image that should handle;
(b) according to the 3rd color-values of these grade in an imperial examination three images and the first correction color-values of this grade in an imperial examination three images, calculate a group correction coefficient;
(c) revise second color-values of this first image according to this group correction coefficient, and then obtain second color-values that this first image meets the correction of this second color mode;
(d) second color-values with the correction of this first image exports this display unit to from this Equipment for forming image; And
(e) second color-values based on the correction of this first image shows this second image again on this display unit, and the color of second image on causing the color that is shown in first image on this Equipment for forming image and being shown in this display unit is consistent.
7. method as claimed in claim 6, wherein step (a) is to carry out by the following step at this 3rd image of handling:
The 3rd color-values of the 3rd image of (a1) this being handled is set at existing color-values, and converts this existing color-values to meet this second color mode the 4th color-values;
The 4th color-values of the 3rd image of (a2) this being handled exports this display unit to from this Equipment for forming image;
(a3), show the 4th image that should handle on this display unit based on the 4th color-values of this 3rd image of handling;
(a4) capture the 4th image that just is being shown on this display unit by this Equipment for forming image, and then obtain one the 5th image the 3rd image that should handle;
(a5) measure the 5th color-values that the 5th image of the 3rd image that handle is met this first color mode;
(a6) judge whether the 5th color-values that is measured closes in a tolerance interval with the value of chromatism of this existing color-values, and judged result then should existing color-values replace with the 5th color-values, and repeating step (a1) is to step (a6) for negating;
(a7) decision will be closed the 5th color-values that equates in this tolerance interval with the value of chromatism of this existing color-values and will be considered as this first correction color-values.
8. method as claimed in claim 7, wherein this first color mode comprises R, G, B (red, green, blue) color element.
9. method as claimed in claim 8, wherein this second color mode comprises Y, Cb, Cr (brightness, blue poor, red poor) color element.
10. method as claimed in claim 8, wherein R3, G3, B3 represent the 3rd color-values respectively, and Rc, Gc, Bc be this first correction color-values respectively, and Gb, Gr represent this group correction coefficient and calculate and get via following formula:
11. method as claimed in claim 9, wherein Y ', Cb ', Cr ' represent second color-values of this first image respectively; Y ", Cb ", Cr " represent respectively this first image through revising and meet the color-values of this second color mode, Y ", Cb ", Cr " and calculate and get via following formula:
Y″＝Y′；
Cb "=Cb ' * Gb; And
Cr″＝Cr′×Gr。
12. color correction equipment that is used in the Equipment for forming image, this color correction equipment is in order to make the color that is shown in one first image on this Equipment for forming image consistent with the color of one second image on being shown in a display unit, this first image by this Equipment for forming image acquisition is made of an array of pixels, first color-values that each pixel in this array of pixels has is to meet one first color mode, this first color mode comprises N first color element, this Equipment for forming image and convert the color-values of each pixel of this first image to meet one second color mode second color-values respectively, this second color mode comprises N second color element, this Equipment for forming image and export second color-values of this first image to this display unit, this display unit shows this second image based on second color-values of this first image immediately, N is a natural number, and this color correction equipment comprises:
One storage module, this storage module is in order to store one the 3rd image, the 3rd image has N first color block at least, and the 3rd color-values that each the first color block in these first color blocks has only is made of one first color element in N the color element of this first color mode respectively;
One modular converter, this modular converter are to be converted into the 4th color-values that meets this second color mode in order to the 3rd color-values with the 3rd image;
One output module, this output module are to export this display unit in order to the 4th color-values with the 3rd image to from this Equipment for forming image, and wherein this display unit shows one the 4th image based on the 4th color-values of the 3rd image;
One image acquisition module is shown in the 4th image of this display unit in order to acquisition, comprises the 5th image of N color block at least to form one in this Equipment for forming image, and the 5th image is corresponding to the 3rd image;
One measurement module meets the 5th color-values of the 5th image of this first color mode in order to measurement;
One computing module, in order to meeting these grade in an imperial examination three color-values of this first color mode according to this, and this meets color value of these grade in an imperial examination five colors of this first color mode, calculates a group correction coefficient; And
One correcting module, in order to organizing second color-values of first image to revise this that meet this second color mode after this conversion according to this group correction coefficient, and then obtain this first image through revising and meet second color-values of the correction of this second color mode;
Wherein, after second color-values that this group of this revised first image is revised produces, this Equipment for forming image will this revised first image second color-values revised of this group export this display unit to, second color-values that this display unit is then revised according to this group of this revised first image, again show this second image, so that the color that is shown in this first image on this Equipment for forming image is consistent with the color of this second image on being shown in this display unit.
13. color correction equipment as claimed in claim 12, wherein this first color mode comprises R, G, B (red, green, blue) color element.
14. color correction equipment as claimed in claim 13, wherein this second color mode comprises Y, Cb, Cr (brightness, blue poor, red poor) color element.
15. color correction equipment as claimed in claim 14, wherein on behalf of these grade in an imperial examination three images, R3, G3, B3 meet the 3rd color-values of this first color mode respectively, R5, G5, B5 these grade in an imperial examination five images respectively meet the 5th color-values of this first color mode, and Gb, Gr represent this group correction coefficient and calculate and get via following formula:
16. color correction equipment as claimed in claim 15, wherein Y ', Cb ', Cr ' represent second color-values of this first image respectively; Y ", Cb ", Cr " represent respectively this first image through revising and meet the color-values of this second color mode, Y ", Cb ", Cr " and calculate and get via following formula:
Y″＝Y′；
Cb "=Cb ' * Gb; And
Cr″＝Cr′×Gr。
17. color correction method, this method is in order to make the color that is shown in one first image on the Equipment for forming image consistent with the color of one second image on being shown in a display unit, this first image by this Equipment for forming image acquisition is made of an array of pixels, first color-values that each pixel in this array of pixels has is to meet one first color mode, this first color mode comprises N first color element, this Equipment for forming image and convert the color-values of each pixel of this first image to meet one second color mode second color-values respectively, this second color mode comprises N second color element, this Equipment for forming image and export second color-values of this first image to this display unit, this display unit shows this second image based on second color-values of this first image immediately, N is a natural number, and this method comprises the following step:
(a) handle the 3rd image that is pre-stored in this Equipment for forming image, the 3rd image has N first color block at least, the 3rd color-values that each first color block in these first color blocks has only is made of one first color element in N the color element of this first color mode respectively, decision is about the 3rd image and meet first of this first color mode and revise color-values, and the color of one the 4th image on causing the color that is shown in the 3rd image on this Equipment for forming image and being shown in this display unit is consistent;
(b) according to these grade in an imperial examination three color-values of the 3rd image and these first correction color-values of the 3rd image, calculate a group correction coefficient;
(c) revise second color-values of this first image according to this group correction coefficient, and then obtain second color-values that this first image meets the correction of this second color mode;
(d) second color-values with the correction of this first image exports this display unit to from this Equipment for forming image; And
(e) second color-values based on the correction of this first image shows this second image again on this display unit, and the color of second image on causing the color that is shown in first image on this Equipment for forming image and being shown in this display unit is consistent.
18. method as claimed in claim 17, wherein step (a) is to carry out by the following step at this 3rd image of handling:
(a1) these grade in an imperial examination three color-values with the 3rd image are set at existing color-values, and convert this existing color-values to meet this second color mode the 4th color-values;
(a2) the 4th color-values with the 3rd image exports this display unit to from this Equipment for forming image;
(a3) based on the 4th color-values of the 3rd image, show to should the 4th image on this display unit;
(a4) be shown in the 4th image on this display unit by the acquisition of this Equipment for forming image, and then obtain one the 5th image that should the 3rd image;
(a5) measure the 5th color-values that the 5th image that should the 3rd image is met this first color mode;
(a6) judge whether the 5th color-values that is measured closes in a tolerance interval with the value of chromatism of this existing color-values, and judged result then should existing color-values replace with the 5th color-values, and repeating step (a1) is to step (a6) for negating;
(a7) decision will be closed the 5th color-values that equates in this tolerance interval with the value of chromatism of this existing color-values and will be considered as this first correction color-values.
19. method as claimed in claim 18, wherein this first color mode comprises R, G, B (red, green, blue) color element.
20. method as claimed in claim 19, wherein this second color mode comprises Y, Cb, Cr (brightness, blue poor, red poor) color element.
21. method as claimed in claim 19, wherein R3, G3, B3 represent the 3rd color-values respectively, and Rc, Gc, Bc be this first correction color-values respectively, and Gb, Gr represent this group correction coefficient and calculate and get via following formula:
22. method as claimed in claim 20, wherein Y ', Cb ', Cr ' represent second color-values of this first image respectively; Y ", Cb ", Cr " represent respectively this first image through revising and meet the color-values of this second color mode, Y ", Cb ", Cr " and calculate and get via following formula:
Y″＝Y′；
Cb "=Cb ' * Gb; And
Cr″＝Cr′×Gr。
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101253762B (en) * | 2005-08-31 | 2012-06-13 | 微软公司 | Multimedia color management system |
| WO2012159586A1 (en) * | 2011-05-26 | 2012-11-29 | 北京泰邦天地科技有限公司 | Color distortion correction method and device for imaging systems and image output systems |
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2003
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101253762B (en) * | 2005-08-31 | 2012-06-13 | 微软公司 | Multimedia color management system |
| WO2012159586A1 (en) * | 2011-05-26 | 2012-11-29 | 北京泰邦天地科技有限公司 | Color distortion correction method and device for imaging systems and image output systems |
| CN102946501A (en) * | 2011-05-26 | 2013-02-27 | 北京泰邦天地科技有限公司 | Color distortion correction method and device in imaging system or image output system |
| CN102946501B (en) * | 2011-05-26 | 2015-03-04 | 北京泰邦天地科技有限公司 | Color distortion correction method and device in imaging system or image output system |
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