CN1581917A - Output image parameter correcting method - Google Patents
Output image parameter correcting method Download PDFInfo
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- CN1581917A CN1581917A CN 03154337 CN03154337A CN1581917A CN 1581917 A CN1581917 A CN 1581917A CN 03154337 CN03154337 CN 03154337 CN 03154337 A CN03154337 A CN 03154337A CN 1581917 A CN1581917 A CN 1581917A
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Abstract
The method for correcting output parameters group includes following steps: first reference image file containing first reference content through output device is output as reference correct photo; next, under environment of specific light source, carrying out white equilibrium process for the digital image picking up device; then, using the digital image picking up device picks up the said reference correct photo so as to form second reference image file containing second reference content data; comparing first reference content data with second reference content data to obtain multiple parameters comparison value; the parameters comparison value through preset program obtains multiple correct parameters value for updating the output parameters group; storing the updated output parameter group on the digital image picking up device, when at least a subsequent image file is generated, the corrected output parameter group is attached to heading area of the subsequent image file.
Description
Technical field
The present invention relates to a kind of output parameter bearing calibration and system thereof,, particularly relate to a kind of output parameter bearing calibration and system thereof and be stored in a output parameter group in the digital image capture apparatus in order to correction in order to proofread and correct an output parameter group.
Background technology
Along with being in fashion of digital photo, printer that can the printing color photograph is also flourish thereupon.Yet; present photochrome printer of a great variety on the market; but it is all inequality that the color of each label printer is set; and printer manufactory is different from digital camera manufacturer usually, so that the user utilizes regular meeting between photochrome that printer prints comes out and the digital image file originally the difference of chroma and brightness to occur.
See also Fig. 1.Fig. 1 is known image file 10 data configuration schematic diagrames.File data shown in Figure 1 is the jpeg format in the digital image format.Jpeg format is that the file data of each image file 10 is divided into header area 12 and image data area 14.The capturing images information of header area 12 store digital image files 10.Image data area 14 is in order to the store images data.
Capturing images information includes the EXIF information that writes down with EXIF form (EXchangeable Image File Format).EXIF is that digital camera is when it stores jpeg file, some information that added, purpose be used for the document image aperture in when acquisition, shutter, ISO, date etc. various with the relevant message of photography prevailing condition, to indicate follow-up digital image file user.
For improving the problem of known technology, part printer manufacturer cooperates with digital camera manufacturer respectively, has worked out the correction parameter group of some digital image file outputs, the usefulness of proofreading and correct when an output device output digital image file is provided.
In the known technology, this correction parameter group is stored in the capturing images information of header area 12 of each digital image file, is right after after the EXIF.The application process of known correction parameter group has two kinds.First kind is before each digital image file exports printer to, allows the user adjust the correction parameter group on personal computer, and printer is exported according to this to reach the in the eyes of ideal effect of user again.Second kind be the correction parameter group that each printer is desirable to be stored in a digital image capture apparatus in advance be in the digital camera, be additional in the header area 12 when being provided in each capturing images, make follow-up printer obtain correct digital picture output.
Yet, the correction parameter group application process of known technology, first kind must be carried out corresponding adjustment through personal computer, just can obtain desirable correction parameter group.If run into the situation that does not have personal computer, the output quality of digital picture will be restricted.In addition, carry out the adjustment of correction parameter group, the inconvenience in the time of will bringing output image to the user at each digital image file.The problem of second kind of application process is, because the correction parameter group is a default value, thereby digital camera can't adjust its correction parameter group automatically according to the type of printer that the user had, and reaches the optimal printing state of this printer.
Therefore, main purpose of the present invention is to provide a kind of parameter calibration system and method thereof, when printing digital image file to improve, and discrepant problem between print quality and the digital image file.
Summary of the invention
The invention provides a kind of parameter calibration system and method thereof, in order to solve the problem of known technology.
The invention provides a kind of parameter calibration system and method thereof, be stored in the digital image capture apparatus for an output parameter group that is additional to an image file in order to correction.
The invention provides a kind of parameter calibration system and method thereof, required a plurality of parameters when its this output parameter group of proofreading and correct is exported this image file in order to an output device to be provided.
Store one first reference picture file in this digital image capture apparatus, this first reference picture file comprises this output parameter group and one first reference content data.Output image bearing calibration of the present invention is earlier this first reference picture file to be output into one with reference to proofreading and correct photograph via this output device.Then under a specific light source environment, this digital image capture apparatus is carried out a white balance program.Under this specific light source environment, utilize this digital image capture apparatus that this is carried out capturing images with reference to proofreading and correct photograph again, include one second reference content data to form one second reference picture file.Relatively these first reference content data and this second reference content data are to obtain a plurality of parameter comparison values.Described parameter comparison value draws a plurality of correction parameter values via a preset program, and upgrades this output parameter group according to this.At last, store output parameter group after this renewal in this digital image capture apparatus, and when at least one subsequent image file produces, additional this output parameter group after proofreading and correct is in the header area of described subsequent image file.
By the present invention, the user can proofread and correct with parameter correcting method of the present invention the digital camera that is had voluntarily in advance directly by the operation-interface of digital camera, obtains the output parameter group between digital camera own and the printer.Digital camera is when follow-up acquisition image, output parameter group after additional automatically this correction of meeting, promptly this digital camera to the best output parameter group of this printer on the header area of each image file, and when printing digital image file, apply mechanically, make this printer obtain best digital picture print quality with respect to this digital camera.
Can describe in detail and appended graphic being further understood by following execution mode about the advantages and spirit of the present invention.
Description of drawings
Fig. 1 is a known image file data configuration schematic diagram;
Fig. 2 proofreaies and correct the photograph schematic diagram according to the reference of the embodiment of the invention;
Fig. 3 carries out white balance program schematic diagram for digital image capture apparatus of the present invention;
Fig. 4 forms the second reference picture file schematic diagram for digital image capture apparatus of the present invention;
Fig. 5 is for using the digital image capture apparatus schematic diagram of parameter calibration system of the present invention; With
Fig. 6 is the flow chart of steps of parameter correcting method of the present invention.
The drawing reference numeral explanation
10: image file 12: header area
14: image data area 15: with reference to proofreading and correct photograph
16: red area 17: green area
18: blue region 19: gray-scale areas
20: digital image capture apparatus 22:LCD screen
25: the second reference picture files 65: blank sheet of paper
30: parameter calibration system 32: memory
34: capturing images module 35: the parameter correction table of comparisons
36: correction module
Embodiment
The invention provides a kind of parameter calibration system, be applied to a digital image capture apparatus as in the digital camera, to proofread and correct an output parameter group.This output parameter group is stored in this digital image capture apparatus for being additional to an image file.Store one first reference picture file in this digital image capture apparatus, this first reference picture file comprises this output parameter group and one first reference content data, and is output into one with reference to proofreading and correct photograph via this output device.
See also Fig. 2.Fig. 2 proofreaies and correct photograph 15 schematic diagrames according to the reference of the embodiment of the invention.With reference to proofreading and correct photograph 15 are these first reference content data of output, comprise a red area 16, a green area 17, a blue region 18 and at least one gray-scale areas 19.The present invention utilizes this digital image capture apparatus to carrying out capturing images with reference to proofreading and correct photograph 15, to form one second reference picture file, comprises one second reference content data in it.The present invention will be further relatively these first reference content data and this second reference content data, obtaining a plurality of parameter comparison values, and draw a plurality of correction parameter values via a preset program according to described parameter comparison value.
Described correction parameter values is in order to upgrading an output device such as color printer etc., required this output parameter group when exporting this image file.As shown in Figure 1, image file 10 comprises a header area 12 (Header) in order to storing this output parameter group, and it will be applied mechanically when follow-up output device output image file.
Really enter in the present invention before the operation of parameter correction, should carry out a white balance program earlier.Known white balance program is a digital camera in order at a different ambient light brightness, carries out the program technic that the digital camera primary colours are proofreaied and correct.Its main purpose is to carry out ambient brightness and proofreaies and correct.Measure and obtain relevant parameter by colour temperature and brightness value, and then when the parameter correction step, consider the parameter of this relevant source environment, make output parameter of the present invention not be subjected to the factor affecting of ambient light brightness and change a specific light source environment.
See also Fig. 3.Fig. 3 carries out white balance program schematic diagram for digital image capture apparatus 20 of the present invention.Digital image capture apparatus 20 is to have two incandescent sources 62,64 respectively in relative direction one, to press from both sides under the specific light source environment of 45 angular illumination one blank sheet of paper 65 of spending with horizontal direction, with vertical angle one blank sheet of paper is carried out capturing images, carrying out ambient brightness proofreaies and correct, and obtain the colour temperature of relevant this specific light source environment and the relevant parameter of brightness, as the reference of subsequent step of the present invention.
See also Fig. 4.Fig. 4 forms the second reference picture file, 25 schematic diagrames for digital image capture apparatus 20 of the present invention.After the white balance EP (end of program) of Fig. 3, then in digital image capture apparatus 20, form this second reference picture file 25.Fig. 4 when showing digital image capture apparatus 20 and acquisition image thereof, is presented on the image on the lcd screen 22.Under this specific light source environment, will be placed on former blank sheet of paper 65 lay down locations with reference to proofreading and correct photograph 15, at this moment, these first reference content data can be presented at earlier on the lcd screen 22, and described redness, green and blue region are represented with solid line on Fig. 4.Then proofread and correct photograph 15 with 20 pairs of references of digital image capture apparatus and carry out capturing images, also can be presented at lcd screen 22 on reference to the image of proofreading and correct photograph 15 this moment, and the frame line of its described redness, green and blue region is represented by dotted lines on Fig. 4.The first reference content data and reference correction photograph 15 shown on lcd screen 22 overlap fully, and solid line shown in Figure 4 and dotted line are overlapped, and press shutter again and capture the second reference picture file 25 to obtain the second reference content data.By this, digital image capture apparatus 20 can be under identical lighting environment condition, relatively these first reference content data and this second reference content data, learn the output photograph of output device and digital image capture apparatus 20 image file difference why.
See also Fig. 5.Fig. 5 is the schematic diagram of the digital image capture apparatus 20 of application parameter calibration system 30 of the present invention.This parameter calibration system comprises a memory 32, a capturing images module 34, a parameter correction table of comparisons 35 and a correction module 36.Memory 32 is in order to store this output parameter group.Capturing images module 34 is in order to carrying out a white balance program to digital image capture apparatus under a specific light source environment, and under this specific light source environment to carrying out capturing images to form one second reference picture file with reference to proofreading and correct photograph 15.
36 of correction modules obtain described parameter comparison value, and draw a plurality of correction parameter values according to described parameter comparison value via a preset program in order to relatively these first reference content data and this second reference content data.Correction module 36 upgrades this output parameter group further according to described correction parameter values, and stores output parameter group after this renewal in digital image capture apparatus 20.This preset program is to proofread and correct the table of comparisons 35 with described parameter comparison value query argument, and correspondence obtains described correction parameter values.
The parameter correction table of comparisons 35 includes the correction parameter of numerous species, for example divides other chroma, brightness to red, green and blue three looks, and the GTG expressivity of each color or the like.
Promote the practice of correction parameter group according to known printer manufacturer, printer manufacturer provides contrast formula between described correction parameter values and actual printer output parameter to digital camera manufacturer.Then digital camera is able to by described correction parameter values and this contrast formula, adjusts the suitableeest output obtain being specific between this digital camera and the printer with reference to figure.When digital camera output subsequent image file, the data of this image file be to should the suitableeest output doing corresponding output with reference to figure, and the best in quality when obtaining this printer prints photochrome.
See also Fig. 6.Fig. 6 is the flow chart of steps of parameter correcting method of the present invention.The inventive method comprises the following step:
Step S40: beginning;
Step S42: this first reference picture file is output into one with reference to proofreading and correct photograph via this output device;
Step S44: under a specific light source environment, digital image capture apparatus 20 is carried out a white balance program;
Step S46: under this specific light source environment, to carrying out capturing images, to obtain one second reference content data with reference to proofreading and correct photograph 15;
Step S48: relatively these first reference content data and this second reference content data are to obtain a plurality of parameter comparison values;
Step S50: inquire about this parameter correction table of comparisons with described parameter comparison value, correspondence obtains described correction parameter values;
Step S52:, upgrade this output parameter group according to described correction parameter values;
Step S54: store output parameter group after this renewal in digital image capture apparatus 20;
Step S56: when at least one subsequent image file produced, the output parameter group after additional this correction was in the header area 12 of described subsequent image file;
Step S58: finish.
By the present invention, the user can proofread and correct with parameter correcting method of the present invention the digital camera that is had voluntarily in advance directly by the operation-interface of digital camera, obtains the output parameter group between digital camera own and the printer.Digital camera is when follow-up acquisition image, output parameter group after additional automatically this correction of meeting, promptly this digital camera to the best output parameter group of this printer on the header area of each image file, and when printing digital image file, apply mechanically, make this printer obtain best digital picture print quality with respect to this digital camera.
Compared to known technology, output image bearing calibration of the present invention is earlier this first reference picture file to be output into one with reference to proofreading and correct photograph via this output device.Then under a specific light source environment, this digital image capture apparatus is carried out a white balance program.Then under this specific light source environment, utilize this digital image capture apparatus that this is carried out capturing images with reference to proofreading and correct photograph, include one second reference content data to form one second reference picture file.Relatively these first reference content data and this second reference content data are to obtain a plurality of parameter comparison values.Described parameter comparison value draws a plurality of correction parameter values via a preset program, and upgrades this output parameter group according to this.At last, store output parameter group after this renewal in this digital image capture apparatus, and when at least one subsequent image file produces, additional this output parameter group after proofreading and correct is in the header area of described subsequent image file.
By this, the print quality the when user of digital camera and printer need not adjust its printer prints image file by personal computer again, making directly to connect digital camera and obtain the optimal printing quality with printer becomes possibility.In addition, the present invention is with the corrective system of digital camera inside and method, further broken through printer and often come from the restriction of different manufacturers, and obtained the best output parameter of digital camera, the usefulness of each printer of optimization at each printer with digital camera.
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 claim of being arranged in of various changes and tool equality institute of the present invention desire application.
Claims (16)
1. output image parameter correcting method, in order to proofread and correct an output parameter group, it is stored in the digital image capture apparatus for being additional to an image file, required a plurality of parameters when this output parameter group provides an output device to export this image file, this image file comprises a header area in order to store this output parameter group, and one image data area in order to store picture material data, store one first reference picture file in this digital image capture apparatus, this first reference picture file comprises this output parameter group and one first reference content data, and this output image parameter correcting method comprises the following step:
This first reference picture file is output into one with reference to proofreading and correct photograph via this output device;
Under a specific light source environment, this digital image capture apparatus is carried out a white balance program;
Under this specific light source environment, utilize this digital image capture apparatus that this is carried out capturing images with reference to proofreading and correct photograph, forming one second reference picture file, in comprise one second reference content data;
Relatively these first reference content data and this second reference content data are to obtain a plurality of parameter comparison values;
Draw a plurality of correction parameter values according to described parameter comparison value via a preset program;
According to described correction parameter values, upgrade this output parameter group; And
Store output parameter group after this renewal in this digital image capture apparatus, and when at least one subsequent image file produces, additional this output parameter group after proofreading and correct is in the header area of described subsequent image file.
2. output parameter bearing calibration as claimed in claim 1 wherein stores a parameter correction table of comparisons in this digital image capture apparatus, this preset program is to inquire about this parameter correction table of comparisons with described parameter comparison value, and correspondence obtains described correction parameter values.
3. output parameter bearing calibration as claimed in claim 1, wherein this white balance program be this digital image capture apparatus under this specific light source environment, with vertical angle one blank sheet of paper is carried out capturing images, proofread and correct in order to make ambient brightness.
4. output parameter bearing calibration as claimed in claim 3, wherein this specific light source environment is meant and utilizes two incandescent sources respectively in relative direction, to press from both sides 45 these blank sheet of paper of angular illumination of spending with horizontal direction.
5. output parameter bearing calibration as claimed in claim 1, wherein these first reference content data comprise a red area, a green area and a blue region.
6. output parameter bearing calibration as claimed in claim 5, wherein said parameter comparison value are by this red area, this green area and this blue region of relatively these first reference content data and these second reference content data and produce.
7. output parameter bearing calibration as claimed in claim 5, wherein these first reference content data further comprise at least one gray-scale areas.
8. output parameter bearing calibration as claimed in claim 7, wherein said parameter comparison value are by this red area, this green area, this blue region and this gray-scale areas of relatively these first reference content data and these second reference content data and produce.
9. parameter calibration system, be applied in the image capturing device to proofread and correct an output parameter group, it is stored in this digital image capture apparatus for being additional to an image file, required a plurality of parameters when this output parameter group provides an output device to export this image file, this image file comprises a header area in order to store this output parameter group, and one image data area in order to store picture material data, store one first reference picture file in this digital image capture apparatus, this first reference picture file comprises this output parameter group and one first reference content data, and be output into one with reference to proofreading and correct photograph via this output device, this parameter calibration system comprises:
One memory is in order to store this output parameter group;
One capturing images module, in order to
Under a specific light source environment, this digital image capture apparatus is carried out a white balance program; And
Under this specific light source environment, utilize this digital image capture apparatus that this is carried out capturing images with reference to proofreading and correct photograph, forming one second reference picture file, in comprise one second reference content data; And
One correction module, in order to
Relatively these first reference content data and this second reference content data are to obtain a plurality of parameter comparison values;
Draw a plurality of correction parameter values according to described parameter comparison value via a preset program; And
According to described correction parameter values, upgrade this output parameter group; And
Store output parameter group after this renewal in this digital image capture apparatus,
Wherein, this digital image capture apparatus and when at least one subsequent image file produces, additional this output parameter group after proofreading and correct is in the header area of described subsequent image file.
10. parameter calibration system as claimed in claim 9 further comprises a parameter correction table of comparisons, and this preset program is to inquire about this parameter correction table of comparisons with described parameter comparison value, and correspondence obtains described correction parameter values.
11. parameter calibration system as claimed in claim 9, wherein this white balance program be this digital image capture apparatus under this specific light source environment, with vertical angle one blank sheet of paper is carried out capturing images, proofread and correct in order to make ambient brightness.
12. parameter calibration system as claimed in claim 11, wherein this specific light source environment is meant and utilizes two incandescent sources respectively in relative direction, to press from both sides 45 these blank sheet of paper of angular illumination of spending with horizontal direction.
13. parameter calibration system as claimed in claim 9, wherein these first reference content data comprise a red area, a green area and a blue region.
14. parameter calibration system as claimed in claim 13, wherein said parameter comparison value by this red area, this green area and this blue region of relatively these first reference content data and these second reference content data and produce.
15. parameter calibration system as claimed in claim 13, wherein these first reference content data further comprise at least one gray-scale areas.
16. parameter calibration system as claimed in claim 15, wherein said parameter comparison value are by this red area, this green area, this blue region and this gray-scale areas of relatively these first reference content data and these second reference content data and produce.
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| CN 03154337 CN1581917A (en) | 2003-08-15 | 2003-08-15 | Output image parameter correcting method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100444614C (en) * | 2005-06-17 | 2008-12-17 | 虹光精密工业（苏州）有限公司 | Image acquisition apparatus capable of rapidly processing image and its image acquisition method |
| CN101395576B (en) * | 2006-03-02 | 2012-01-04 | Abb公司 | A method for comparing, an automation system and a controller |
| CN106028015A (en) * | 2015-03-24 | 2016-10-12 | 富士施乐株式会社 | Color processing device and method, and color processing system |
| US10708561B2 (en) | 2014-03-27 | 2020-07-07 | Nec Corporation | POS terminal, information processing device, white balance adjustment method, and recording medium |
-
2003
- 2003-08-15 CN CN 03154337 patent/CN1581917A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100444614C (en) * | 2005-06-17 | 2008-12-17 | 虹光精密工业（苏州）有限公司 | Image acquisition apparatus capable of rapidly processing image and its image acquisition method |
| CN101395576B (en) * | 2006-03-02 | 2012-01-04 | Abb公司 | A method for comparing, an automation system and a controller |
| US10708561B2 (en) | 2014-03-27 | 2020-07-07 | Nec Corporation | POS terminal, information processing device, white balance adjustment method, and recording medium |
| CN106164988B (en) * | 2014-03-27 | 2021-03-16 | 日本电气株式会社 | POS terminal, information processing apparatus, white balance adjustment method, and recording medium |
| CN106028015A (en) * | 2015-03-24 | 2016-10-12 | 富士施乐株式会社 | Color processing device and method, and color processing system |
| CN106028015B (en) * | 2015-03-24 | 2018-05-29 | 富士施乐株式会社 | Color processing apparatus and method and color processing system |
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