CN1614987A - Image fetcher and method for automatic correcting image size - Google Patents
Image fetcher and method for automatic correcting image size Download PDFInfo
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- CN1614987A CN1614987A CN 200310113814 CN200310113814A CN1614987A CN 1614987 A CN1614987 A CN 1614987A CN 200310113814 CN200310113814 CN 200310113814 CN 200310113814 A CN200310113814 A CN 200310113814A CN 1614987 A CN1614987 A CN 1614987A
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Abstract
The method includes following steps: a reference mark is scanned; according to the pixel numbers obtained from scanning the reference mark and the pixel numbers that should be obtained, the correction parameter is generated; according to the correction parameter corrects the size of image obtained scanning file.
Description
Technical field
The invention provides the system and method that an image fetch device is proofreaied and correct, refer to the system and method for an image fetch device correcting image size especially.
Technical background
The product that has image fetch device at present, for example (multi-function printer MFP), utilizes optical sensor or touch sensor to read file data more for scanner, facsimile machine and multifunctional paper feeding machine.In optical profile type sensing mode, its optical module comprises fluorescent tube, speculum, lens and charge coupled device (charged coupled device, CCD) etc., through accurate calculating and design, file data to be read is via the irradiation of fluorescent tube, and the reflection ray that obtains is through mirror reflects, can be guided through lens, through the refraction action of lens, the light of image can be received and sensing by CCD, and then obtains image data.The correctness of image data and the precision of mechanism arrangement are closely bound up.
Image fetch device can provide multiple different resolution (resolution) to read image usually, and the read-out resolution of selection is higher, and master copy image will show with more pixel (pixels); Otherwise resolution is lower, and the image pixel that scanning obtains is also just few.Therefore, same image reads with different resolution, and resulting data length is also inequality.In addition, because the characteristic and the structural restriction of sensing module of transducer, can make the data that read to pass through some image processing, as cover correction (shading correction) and gamma correction (Gamma correction), could obtain truer and correct image data.
In order to utilize devices such as photocopier or printer to copy the image identical, can the accurate image that reads be a considerable ring with original original text.The product that has at present image fetch device on the market, via a series of calibration, the correctness that the image that can provide on the hardware reads is just fixed when dispatching from the factory in manufacture process for it; Yet owing to still have error on the manufacture process, or the time bump in carrying, or machine time one of using cause the deviation in the mechanism for a long time, the precision of machine will change, and cause between the image size that read and full-size(d) difference to some extent.So, then the image that printer or photocopier are printed and duplicating is come out will be exaggerated or dwindle, and other further image processing for the image data that is read also error will take place.For example when the one scan instrument scanned an image with resolution 600dpi (600 pixels of every English inch, 600 dots per inch), if the cross-directional length of this image is 1 English inch, then this scanner should read 600 pixels in the horizontal direction.Yet former thereby produce the error of precision because of some when this scanner, this scanner can't correctly read 600 pixels.Suppose that this scanner has read 625 pixels, this represents that this image has been exaggerated when scanning, if it is not calibrated, then Zhi Hou image processing or printing, will make a mistake when duplicating this image, if for example with this image of resolution processes of 600dpi, then the length that prints on horizontal direction of this image can become
The English inch, different with the size of former figure, produce error.
For the various collimation techniques of the product of image fetch device, mostly be at the error that is produced in its manufacture process and proofread and correct in the known technology, that is the error that all promptly exists before dispatching from the factory at product is calibrated.And for the image fetch device product after dispatching from the factory, no matter be because of still having error on the manufacture process, or the time bump in carrying afterwards, or machine has used of a specified duration and the error of the precision that reads image that deviation in the mechanism etc. causes has been arranged, and all can't be remedied.
Summary of the invention
Therefore main purpose of the present invention is to provide the method for the automatic correcting image size of a kind of image fetch device, it utilizes an ad-hoc location and a size that is fixed on the file carrying platform of this image fetch device to be known reference identification, according to the number of the pixel of this reference identification gained of scanning and scan this reference identification the number of the pixel that should obtain, produce the correction parameter that image reads, and then the error of adjustment image size size, to improve the problems referred to above.
According to claim of the present invention, be the method that discloses a kind of image fetch device correcting image size.This method comprises scanning one reference identification; According to the number of the pixel of this reference identification gained of scanning and the number that scans the pixel that this reference identification institute should obtain, the correction parameter that the generation image reads; And the size of the image that is produced according to this correction parameter correct scan file.
According to claim of the present invention, other discloses a kind of image reading system, and it comprises a housing, and it comprises a file carrying platform; One sensing module is used for reading and places a document image on this document carrying platform; At least one reference identification is positioned at this housing on the edge of this scan module side and contiguous this document carrying platform; One logical block, be used for according to this sensing module scan the actual pixels number of this reference identification gained and scan this reference identification along the length of X-direction the first presetted pixel number that should obtain, the X-axis correction parameter when producing this document image and reading.
The accompanying drawing summary
Fig. 1 is an image reading system schematic diagram of the present invention.
The first embodiment schematic diagram of Fig. 2 reference identification of the present invention.
Fig. 3 is the second embodiment schematic diagram of reference identification of the present invention.
Fig. 4 is the 3rd an embodiment schematic diagram of reference identification of the present invention.
Fig. 5 is the 4th an embodiment schematic diagram of reference identification of the present invention.
The reference numeral explanation
10 image reading systems
12 housings
13 sensing modules
14 file carrying platforms
15 active scanning intervals
16 reference identification
17 reference identification
The Y vertical direction
The X horizontal direction
20 reference identification
30 reference identification
40 reference identification
50 reference identification
Embodiment
See also Fig. 1.Fig. 1 is the schematic diagram of image reading system 10 of the present invention.Among Fig. 1,12 is the housing of image fetch device 10; 14 is a file carrying platform; 13 is a sensing module, is used for reading placing a document image on this document carrying platform; 15 is the active scanning interval on the file carrying platform 24, and its scope is slightly larger than file carrying platform 14, that is transparent and make file carrying platform 14 that the file on it can sensed module 13 reads around still be the scope of sensing module 13 file that can read; And 16 and 17 be two reference identification, is positioned within the active scanning interval 15 of housing 12 on the edge of sensing module 13 sides and contiguous this document carrying platform; Wherein, be denoted as vertical direction, and X is denoted as horizontal direction with Y.The position at reference identification 16 and 17 places can sensed module 13 effectively be read, but places scanning of the file that scans on the platform 14 by seeing outside the housing 12 and can not influencing. Reference identification 16 and 17 is default image, its under a predetermined resolution in the horizontal direction with vertical direction on the number of the pixel that should read be known and be stored in the internal memory of image reading system 10; When getting the number of its pixel on horizontal direction and vertical direction when sensing module 13 scan reference sign 16, the logical block that image reading system 10 comprised can be with this scanning and number of pixels and internal memory in the number of pixels that stores compare, and produce the correction parameter that an image reads, and proofread and correct the size of the image that scanning document produced afterwards according to this correction parameter.
See also Fig. 2.Fig. 2 is first embodiment of the reference identification among the present invention.The image of hypothetical reference sign is that a background is white or light dark color or black elongated rectangular shown in 20 among Fig. 2, and the long edge lengths of this rectangle is X21, and bond length is Y22.The resolution that image reading system 10 reads at image is carried out image during for 600dpi and is read correction, and when reading reference identification 20, reading X21 is 6100 pixels, and Y22 is 310 pixels; Yet stored X21 but is 6000 pixels and Y22 is 300 pixels in the internal memory of image reading system 10, the expression image is exaggerated when scanning, then logical block can be with this scanning and number of pixels and internal memory in the number of pixels that stores compare, and produce the correction parameter that an image reads, promptly horizontal direction is
And vertical direction is
When desiring to scan an image with 600dpi equally after the image reading system 10 and printing, suppose that it scans this image in horizontal direction and gets 65000 pixels, and get 3500 pixels in this image of vertical scan direction, then image reading system 10 will be according to above correction parameter correcting image, and prints in the horizontal direction
The length of English inch is then printed in vertical direction
The length of English inch; After so proofreading and correct, the image that prints will be consistent with the original copy that is scanned.In this example, image reading system 10 can be a multifunctional paper feeding machine, and himself promptly comprises internal memory and logical block, and has the function that scanner uni is printed simultaneously.
See also Fig. 4.Fig. 4 is the schematic diagram of the 3rd embodiment of the reference identification among the present invention, is one to have special white or light figure dark color or black elongated rectangular thereon.As shown in Figure 4, reference identification 40 has two reference length X41 and X42 in the horizontal direction at least, and a reference length Y43 is arranged on vertical direction.When the method for utilizing reference identification 40 and image reading system correcting image size of the present invention is carried out the timing that image reads, can produce the correction parameter of horizontal direction and vertical direction respectively according to above-described flow process.Wherein, the correction parameter of horizontal direction still can by the number of pixels of the scanning gained of X41 and X42 and scanning the comparison of the number of pixels that should obtain, select one and produce; Or double adopt both and a dual checking.
Logical block among the present invention can be designed to directly according to the actual pixels number of the length gained of the length of the X-direction of sensing module scan reference sign and Y direction and scan the length of X-direction of this reference identification and the length of Y direction the first presetted pixel number and the second presetted pixel number that should obtain, an X-axis correction parameter and a Y-axis correction parameter when generation this document image reads, this image reading system can be adjusted the output size of this document image in X-direction and Y direction by this X-axis correction parameter and this Y-axis correction parameter.See also Fig. 5.Fig. 5 is the schematic diagram of the 4th embodiment of the reference identification among the present invention.Reference identification 50 is X51 and be Y52 in the length of Y direction in the length of X-direction, when utilizing reference identification 50, image reading system 10 carries out the timing of image size size, can be directly with the actual pixels number of reference identification 50 on the X-direction that it was read and on the Y direction, with when scanning reference identification 50 on the X-direction that should obtain and the presetted pixel number on the Y direction, an X-axis correction parameter and Y-axis correction parameter when the generation document image reads, this image reading system can be adjusted the output size of this document image in X-axis and Y direction by this X-axis correction parameter and Y-axis correction parameter.And image reading system 10 can comprise a display screen in addition, can show the document image and an X-axis engineer's scale and the Y-axis engineer's scale that are read on it, and the size of this document image X-direction and Y direction can be described by this X-axis engineer's scale and this y axis scale chi.
More than be the implementing procedure of the method for the automatic correcting image size of image reading system of the present invention, and collocation illustrate with the embodiment of different reference identification; Wherein this image reading system can be a multifunctional paper feeding machine, a facsimile machine, a photocopier, or one scan instrument, or be a computer and above at least one combination.And image of the present invention reads bearing calibration, automatically perform in the time of can being made as the electric power starting when the image reading system, or can it carries out calibration function by user's ACTIVE CONTROL.The present invention by comparison scan reference sign number of pixels and scan the number of pixels that this reference identification institute should obtain, the correction parameter that the generation image reads; Can proofread and correct for the image size size that is read, though in the horizontal direction or the amplification on the vertical direction and dwindling all can be corrected and make that follow-up image processing is correct and undistorted.Wherein, reference identification is by pasting or alternate manner places the edge of the active scanning interval on this document carrying platform, and it both can the correct sensing of sensed module, can not hinder the scanning of other generic-document again.The style of reference identification and form can have many variations, and its main points are the length identification that can provide clear and definite, and each is for an embodiment is arranged among Fig. 2, Fig. 3 and Fig. 4.Or can be designed to not with the figure on the reference identification directly with the reference of the length of reference identification itself as the correcting image size.Scan reference sign the number of pixels that should obtain can be stored in multifunctional paper feeding machine, facsimile machine, photocopier in the built-in internal memory of printer or scanner, also can be stored in the internal memory of a computer; And comparison scan reference sign and number of pixels and scan the work of the correction parameter that number of pixels that this reference identification institute should obtain reads with the generation image can be by multifunctional paper feeding machine, facsimile machine, photocopier, the bist logic unit of printer or scanner is responsible for, and also can be responsible for by the logical block of a computer.
In sum, the method of the automatic correcting image size of image fetch device that the present invention proposes, not only can do in varying degrees correction at individual other machine, to same machine also can be at any time at the change of this machine state and adjust, making each image read the image size of gained can both be consistent with original copy.The method of using the automatic correcting image size of image fetch device of the present invention can remedy in the known technology, i.e. calibration problem again after dispatching from the factory for image fetch device, image is read and utilize read and the image data that carries out of data handle more accurate.
The above only is preferred embodiment of the present invention, and all equalizations of being done according to the present patent application claim change and modify, and all should belong to the covering scope of patent of the present invention.
Claims (17)
1. the method for an image reading system correcting image size, it comprises the following step:
(a) scanning one reference identification;
(b) according to the number of the pixel of this reference identification gained of scanning and the number that scans the pixel that this reference identification institute should obtain, the correction parameter that the generation image reads; And
(c) size of the image that is produced according to this correction parameter correct scan file.
2. the method for claim 1, wherein, in step (b), be respectively according to this reference identification of scanning in the number of the pixel of horizontal direction and vertical direction gained and scan this reference identification in horizontal direction and vertical direction the number of the pixel that should obtain, the correction parameter of generation horizontal direction and vertical direction.
3. the size of the method for claim 1, wherein proofreading and correct the image that scanning document produced in step (c) can be the size of amplifying or dwindling image.
4. the method for claim 1, it comprises in addition when this image reading system electric power starting, promptly automatically performs step (a) and (b) and (c).
5. image reading system, it comprises:
One housing, it comprises a file carrying platform;
One sensing module is used for reading a document image that places on this document carrying platform;
At least one reference identification is positioned at this housing on the edge of this sensing module side and contiguous this document carrying platform; And
One logical block, be used for according to this sensing module scan this reference identification gained pixel number and scan this reference identification the number of the pixel that should obtain, produce the correction parameter that image reads.
6. system as claimed in claim 5, wherein, this reference identification is the edge that is positioned at the active scanning interval on this document carrying platform.
7. system as claimed in claim 5, wherein, this reference identification comprises a background and is white or light dark color or black elongated rectangular.
8. system as claimed in claim 5, wherein, this reference identification comprises two dark colors on white or the light background or the combination of black elongated rectangular, wherein between these two elongated rectangular at a distance of a predetermined length.
9. system as claimed in claim 5, wherein, this reference identification comprises one and has special white or light figure dark color or black elongated rectangular thereon.
10. system as claimed in claim 5, it comprises a plurality of reference identification.
11. an image reading system, it comprises:
One housing, it comprises a file carrying platform;
One sensing module is used for reading a document image that places on this document carrying platform;
At least one reference identification is positioned at this housing on the edge of this sensing module side and contiguous this document carrying platform, and the length along X-direction of this reference identification is l
1And
One logical block is used for scanning the actual pixels number of this reference identification gained and scanning this length l according to this sensing module
1Reference identification the first presetted pixel number that should obtain, the X-axis correction parameter when producing this document image and reading, this image reading system can be adjusted the output size of this document image in X-direction by this X-axis correction parameter.
12. system as claimed in claim 11, wherein, the length along Y direction of this reference identification is l
2This logical block scans the actual pixels number of this reference identification gained and scans this length l according to this sensing module
2Reference identification the second presetted pixel number that should obtain, the Y-axis correction parameter when producing this document image and reading, this image reading system can be adjusted the output size of this document image in Y direction by this Y-axis correction parameter.
13. system as claimed in claim 11, wherein, this system comprises a display screen in addition, can show a this document image and an X-axis engineer's scale on it, by this X-axis engineer's scale this document image X-direction size can be described.
14. system as claimed in claim 11, wherein, this system comprises a display screen in addition, can show a this document image and a Y-axis engineer's scale on it, by this Y-axis engineer's scale this document image Y direction size can be described.
15. system as claimed in claim 11, wherein, this reference identification system is positioned at the edge of the active scanning interval on this document carrying platform.
16. system as claimed in claim 11, wherein, this reference identification comprises a dark color or black elongated rectangular.
17. system as claimed in claim 11, it comprises a plurality of reference identification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310113814 CN1614987A (en) | 2003-11-04 | 2003-11-04 | Image fetcher and method for automatic correcting image size |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200310113814 CN1614987A (en) | 2003-11-04 | 2003-11-04 | Image fetcher and method for automatic correcting image size |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101253759B (en) * | 2005-05-30 | 2012-11-28 | 富士胶片株式会社 | Album creating apparatus, and album creating method |
| CN102883084A (en) * | 2011-07-12 | 2013-01-16 | 珠海金联安警用技术研究发展中心有限公司 | Accuracy deviation detecting and correcting method of scanner |
| CN107347120A (en) * | 2016-06-17 | 2017-11-14 | 虹光精密工业股份有限公司 | Copying apparatus capable of correcting copying position and copying method |
-
2003
- 2003-11-04 CN CN 200310113814 patent/CN1614987A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101253759B (en) * | 2005-05-30 | 2012-11-28 | 富士胶片株式会社 | Album creating apparatus, and album creating method |
| CN102883084A (en) * | 2011-07-12 | 2013-01-16 | 珠海金联安警用技术研究发展中心有限公司 | Accuracy deviation detecting and correcting method of scanner |
| CN102883084B (en) * | 2011-07-12 | 2016-04-06 | 北京宇信科技集团股份有限公司 | Scanner accuracy error detects and correcting method |
| CN107347120A (en) * | 2016-06-17 | 2017-11-14 | 虹光精密工业股份有限公司 | Copying apparatus capable of correcting copying position and copying method |
| CN107347120B (en) * | 2016-06-17 | 2019-07-23 | 虹光精密工业股份有限公司 | Copying apparatus capable of correcting copying position and copying method |
| US10530961B2 (en) | 2016-06-17 | 2020-01-07 | Avision Inc. | Copying apparatus and method capable of calibrating copy position |
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