CN1167250C - CCD corrector - Google Patents
CCD corrector Download PDFInfo
- Publication number
- CN1167250C CN1167250C CNB011398612A CN01139861A CN1167250C CN 1167250 C CN1167250 C CN 1167250C CN B011398612 A CNB011398612 A CN B011398612A CN 01139861 A CN01139861 A CN 01139861A CN 1167250 C CN1167250 C CN 1167250C
- Authority
- CN
- China
- Prior art keywords
- charge coupled
- coupled cell
- line
- processor
- correcting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000012937 correction Methods 0.000 claims description 33
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 230000001915 proofreading effect Effects 0.000 description 10
- 230000000875 corresponding effect Effects 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000003086 colorant Substances 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000003550 marker Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 230000026676 system process Effects 0.000 description 2
- 238000013519 translation Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Landscapes
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
- Transforming Light Signals Into Electric Signals (AREA)
Abstract
The present invention discloses a correcting device of a charge coupled device in a scanning system, which is used for a scanning system. The scanning system at least comprises a charge coupled device. The correcting device is at least composed of a processor, an application circuit, a correcting flat plate and a display device, wherein the correcting flat plate is arranged in front of the charge coupled device; the processor is connected with the charge coupled device; an analogue signal generated by the charge coupled device is input into the processor; the analogue signal is converted into a digital signal by the processor. After the application circuit is connected to the processor, in view of a plurality of correcting signals generated by the digital signal, the display device is connected with the application circuit in order to display the correcting signals.
Description
The present invention is for dividing an application the original bill denomination of invention: method for correcting charge coupled element and device thereof,
The applying date: on March 2nd, 1998,
Application number: 98100590.X.
Technical field
The present invention relates to a kind of adjustment and means for correcting of scanning system, be meant a kind of means for correcting that uses the scanning system of charge coupled cell especially.
Background technology
Scanning means is the most normal present image processing instrument that is used, become accessible signal in order to image transitions with file, in processing procedure, scanning means is used to be produced a signal output focusing of the image on file imaging to a photoelectric sensing element for image processing.General scanning means roughly can be divided into three major types, is respectively hand held scanning system, paper feed type scanning system and platform-type scanning system.Scanning means comprises a light source, a reflecting optics group and a lens group usually, be used for paper pattern catoptric imaging to a charge coupled cell (charge-coupled device, CCD) on, charge coupled cell produces a picture signal thus.As shown in Figure 1, file 10 is through a light source irradiation, after the reflection of the pattern on the file 10, do through a reflecting optics group 12 and repeatedly to reflect to reach required light path, again by after a lens group 14 refractions, on imaging to a charge coupled cell 16, finish the scanning of a plane of structure, continue to make file translation the place ahead again by charge coupled cell, scanning its image fully, charge coupled cell is with many minimum semiconductor optoelectronic element assembled arrangement array and making in line, when the place ahead by charge coupled cell of file translation, charge coupled cell can scan each bar parallel lines one by one, to produce the picture signal of a complete file, this picture signal is adjusted the DC current gain of picture signal earlier via a pretreatment unit, and now uses an analog-digital converter, this analog picture signal is converted to digital signal, and, signal is done bright portion via a post-processing unit, dark portion and the correction of an ancient woman's ornament agate (highlight, shadow, and Gamma correction) after, produces an image code.
The essential picture signal of handling file of scanning system, it is a quite accurate optical system, any optic error, all can influence quality, resolution and the color etc. of scanning, therefore in making the scanning system process, the installation of charge coupled cell, adjustment and correction become the key of decision scanning system quality.Usually in the one scan system, charge coupled cell is to be installed in the optical system, and the target or the file of essential one auxiliary reference of scanning earlier behind its position of accurate correction, are fixed charge coupled cell again, guarantee image quality.Tradition is made in the scanning system process, the bearing calibration of charge coupled cell is installed, as shown in Figure 2, for using a reference plate 18, a reference pattern 20a, 20b and 20c are arranged on it, be generally a solid line zone with usefulness as identification, after charge coupled cell 16 scannings, observe its signal via an oscilloscope, signal 24 as shown in Figure 3, when being positioned at the tram of 22a shown in Figure 2 for scan line when charge coupled cell, the oscilloscope signal of gained; And when the scan line of charge coupled cell is positioned at the deflected position of 22b shown in Figure 2, just can obtain wrong oscilloscope signal; And when the scan line of charge coupled cell is positioned at the deflected position of 22c shown in Figure 2, just can not get oscilloscope signal; One judges the position of proofreading and correct charge coupled cell by this.
There are following several shortcomings in the bearing calibration of traditional charge coupled cell.When oscilloscope can not get oscilloscope signal, only know that the scan line of charge coupled cell is positioned at the deflected position of 22c or 22d shown in Figure 2, but can't know that charge coupled cell must be adjusted just up or down can obtain correct signal, form the difficulty on proofreading and correct, must the cost more time make repeated attempts and just can obtain signal, and use and be adjusted to a correct charge coupled cell position.In addition, when the scan line of charge coupled cell is positioned at the slight deflection position of 22e shown in Figure 2, still can obtain signal 24 as shown in Figure 3, even the installation site of causing charge coupled cell is deviation to some extent, still can't judge by oscillographic signal, and charge coupled cell can't be proofreaied and correct to a fully accurate horizontal level, the position deviation of scan line will cause the quality of scanning system to descend.
Summary of the invention
Because above-mentioned defective, purpose of the present invention just is to provide the device of charge coupled cell adjustment and correction in the one scan system, with the position of accurate correction charge coupled cell, saves correction time, improves the image quality of scanning system.
The object of the present invention is achieved like this: a kind of CCD corrector, be used in the one scan system, this scanning system has at least one charge coupled cell, it is characterized in that: described means for correcting is at least by a processor, one application circuit, one proofreaies and correct dull and stereotyped and display unit composition, described processor links to each other with charge coupled cell, the analog signal that this charge coupled cell produces inputs in this processor, is a digital signal by processor with this analog signal conversion, described application circuit is connected in after the described processor, produce a plurality of correction signals at above-mentioned digital signal, described display unit is connected with this application circuit, to show these a plurality of correction signals, described correction flat board places before the described charge coupled cell.
Have at least two correcting patterns formed thereon on the described correction flat board, and the spacing between this correcting pattern equate.Above-mentioned correction signal is to scan this correcting pattern by charge coupled cell to be produced.Described correcting pattern is to be formed on the described correction flat board with symmetric mode.
Described correcting pattern is at least one line segment, this line segment be straight line and curve one of them.
Wherein an example is for comprising one at least with respect to horizontal line tilt an oblique line and a vertical line of first angle for described correcting pattern, and an end of vertical line and this oblique line joins.Described first angle is about 45 degree.
Another example of described correcting pattern is for comprising one at least with respect to horizontal line tilt an oblique line and two vertical lines of second angle, and two vertical lines join with the two ends of this oblique line respectively.Described second angle is about 45 degree.
This shows, the picture intelligence that charge coupled cell produces is delivered to a processor, is digital signal by this processor with the analog signal conversion that charge coupled cell scanning is produced, be connected in a processor application circuit afterwards via one, produce a plurality of correction signals at this digital signal, be sent to a display unit, reach the purpose of proofreading and correct the charge coupled cell position.Realize proofreading and correct at short notice the charge coupled cell position, exempt in the conventional method, can't know charge coupled cell adjustment direction and cause proofreading and correct difficult shortcoming, and charge coupled cell can be proofreaied and correct to a fully accurate horizontal level, promote the quality of scanning system, save and proofread and correct the charge coupled cell required time of position.
Description of drawings
The present invention is further described in more detail below by drawings and Examples:
Fig. 1 is the one scan schematic representation of apparatus;
Fig. 2 is in traditional bearing calibration, the schematic diagram of correcting pattern;
Fig. 3 is in traditional bearing calibration, the correction signal that oscilloscope shows;
Fig. 4 is for the scanning means among the present invention and proofread and correct dull and stereotyped schematic diagram;
Fig. 5 is the various embodiment of the correcting pattern among the present invention;
In the method for Fig. 6 for the present invention's announcement, the flow chart of signal processing;
Fig. 7 is the schematic diagram of the scan line position on the correcting pattern;
Fig. 8 is the schematic diagram of the scan line position on the correcting pattern;
Fig. 9 is the correction signal result displayed.
Embodiment
At first, see also Fig. 4, with the scanning system of using single charge coupled cell is an embodiment, in the one scan system, one proofreaies and correct dull and stereotyped 30 places a charge coupled cell 16 the place aheads, the position of proofreading and correct dull and stereotyped place is the position at file place when scanning, and a lens set 14 is arranged at proofreaies and correct between flat board 30 and the charge coupled cell 16.Fig. 4 top shows the pattern of proofreading and correct among the present invention on dull and stereotyped 30, proofread and correct the correcting pattern that comprises many groups on dull and stereotyped 30, the number of correcting pattern is decided on employed charge coupled cell number, in this embodiment, corresponding to using single charge coupled cell, proofread and correct on dull and stereotyped 30 two correcting patterns 32 and 34 are arranged, be the left-right symmetric configuration, correcting pattern can be by one to several curves or rectilinear(-al), as long as can reach demonstration and contrast purpose by its combination and position, all can be as correcting pattern, correcting pattern 32 and 34 is made up of an oblique line and a vertical line respectively in this example, oblique line with respect to horizontal line tilt about 45 the degree, an end of vertical line and oblique line joins.In addition, correcting pattern among the present invention also can be made up of an oblique line and two vertical lines, article two, vertical line joins with the two ends of oblique line respectively, form pattern as English alphabet " N ", several correcting patterns embodiment shown in Figure 5, comprise the combination of several curves and straight line, correcting pattern is not restricted to pattern listed among the figure, generally speaking correcting pattern can be done symmetrical configuration, to increase the convenience of proofreading and correct and judging, oblique line wherein can also be other angles with respect to the angle that horizontal line tilts.Proofread and correct on dull and stereotyped 30 and can a resolution pattern 36 be set, can form by the parallel lines of dense arrangement, with usefulness as adjustment lens group focal length in two correcting patterns 32 and 34.
See Fig. 4, P1 for proofreading and correct on dull and stereotyped 30, when the scan line of charge coupled cell is positioned at centre, corresponds to the reference marker at place, correcting pattern position to P4, proofread and correct dull and stereotyped 30 length greater than P1 to the distance between P4.And the width that charge coupled cell 16 can sense is equal to or greater than P1 at least to the distance between P4.P1 and P4 correspond to the straight line portion in correcting pattern 32 and 34 respectively, and P2 is corresponding, same with the central point of correcting pattern 32 bends part, and the P3 then central point with correcting pattern 34 bends part is corresponding.
The flow chart of signal processing among the present invention shown in Figure 6, the analog signal that charge coupled cell 16 will be read image is sent to a processor 200, processor 200 is a digital signal with analog signal conversion, then use an application circuit 300 to produce most correction signals at this digital signal, and by a display unit 400 demonstration correction signals, to judge and to proofread and correct the position of charge coupled cell 16.
If require further picture quality usually, can in processor 200 designs, comprise more treatment circuit, for example can comprise following serial circuit, comprise a complementary double sampler (correlated double sampler; CDS), adjust its DC current gain at the analog signal that charge coupled cell 16 detects, produce a signal, and use one three-in-one red, green, primary colors multi-processor (RGB multiprocesso) links to each other with complementary double sampler, to select with red, green, the primary colors signal exports in next element in regular turn, one analog-digital converter is connected in after the three primary colors multi-processor, with this adjusted conversion of signals is digital signal, again through a post-processing unit, be connected in after the analog-digital converter, digital signal is done bright portion, dark portion, and the digital signal that generation one image code is exported as processor 200 after the correction of an ancient woman's ornament agate.Above circuit and function all can optionally add, and are not to carry out the necessary element that charge coupled cell 16 is proofreaied and correct.
Fig. 7, Fig. 8 show that the scan line of the charge coupled cell of diverse location corresponds to the dull and stereotyped position of going up the place of correction, the vertical line intersection point of scan line and correcting pattern 32 be a, with the oblique line intersection point of correcting pattern 32 be b, with the vertical line intersection point of correcting pattern 34 be d, with the oblique line intersection point of correcting pattern 34 be c, its corresponding correction signal result is presented at accompanying drawing 9.Signal after charge coupled cell will be changed through a series of processing transmits in the display unit 400, and correction signal is shown with the usefulness as correction.38a referring to Fig. 9, for ease of adjusting and proofread and correct this correction signal of contrast, display unit 400 shows a default reference mark 40, when reference mark 40 is proofreaied and correct dull and stereotyped centre tram for the scan line when charge coupled cell is positioned at, result displayed, as the foundation of adjusting, reference marker P2 as shown in Figure 4 or the position of P3, signal 42 shows the result that flat board is proofreaied and correct in charge coupled cell scanning, 38a to 38g among Fig. 9 shows respectively when the scan line of charge coupled cell is positioned at diverse location, display unit 400 result displayed.
When scan line is 46a shown in Figure 7, its result is the 38a among Fig. 9, be the benchmark of left with 42a and 42d during demonstration, with respect to reference mark 40,42b is offset left, and 42c is skew to the right then, can judge and learn that scan line is to be tilted by the lower-left to the right, as the scan line 46a among Fig. 7, and by this with the position correction of charge coupled cell; Therefore referring to the 38b among Fig. 9, with respect to reference mark 40,42b is offset to the right, and 42c is skew left then, can judge and learn that scan line is to be had a down dip by upper left to the right, is the scan line 46b among Fig. 7, and by this with the position correction of charge coupled cell; In like manner, can judge by the 38c among Fig. 9 and to learn that scan line is as the skew of the 46c among Fig. 7 situation; Can judge by the 38d among Fig. 9 and to learn that scan line is as the skew of the 46d among Fig. 7 situation; Can judge by the 38e among Fig. 9 and to learn that scan line is as the skew of the 46e among Fig. 8 situation; Can judge by the 38f among Fig. 9 and to learn that scan line is as the skew of the 46f among Fig. 8 situation.Therefore, the situation of various scanning shifts all can clearly be judged, and charge coupled cell done corresponding correction, can obtain signal at last, and the scan line of this moment is arranged in the tram, center as Fig. 7 46, the accurate location of finishing charge coupled cell as the demonstration of the 38g among Fig. 9.
By corresponding intrument of the present invention, can proofread and correct the charge coupled cell position at short notice, exempt in the prior art, can't know charge coupled cell adjustment direction and cause proofreading and correct difficult shortcoming, and charge coupled cell can be proofreaied and correct to a fully accurate horizontal level, promote the quality of scanning system, save and proofread and correct the charge coupled cell required time of position.
Claims (9)
1, a kind of CCD corrector, be used in the one scan system, this scanning system has at least one charge coupled cell, it is characterized in that: described means for correcting is at least by a processor, one application circuit, one proofreaies and correct dull and stereotyped and display unit composition, described processor links to each other with charge coupled cell, the analog signal that this charge coupled cell produces inputs in this processor, is a digital signal by processor with this analog signal conversion, described application circuit is connected in after the described processor, produce a plurality of correction signals at above-mentioned digital signal, described display unit is connected with this application circuit, to show these a plurality of correction signals, described correction flat board places before the described charge coupled cell.
2, CCD corrector according to claim 1 is characterized in that: have at least two correcting patterns formed thereon on the described correction flat board.
3, CCD corrector according to claim 2 is characterized in that: described correction signal is to scan this correcting pattern by charge coupled cell to be produced.
4, CCD corrector according to claim 2 is characterized in that: described correcting pattern is to be formed on the described correction flat board with symmetric mode.
5, CCD corrector according to claim 2 is characterized in that: described correcting pattern is at least one line segment, this line segment be straight line and curve one of them.
6, CCD corrector according to claim 5 is characterized in that: described correcting pattern comprises one at least with respect to a tilt oblique line of first angle of horizontal line, and a vertical line, and an end of vertical line and this oblique line joins.
7, CCD corrector according to claim 6 is characterized in that: described first angle is 45 degree.
8, CCD corrector according to claim 5, it is characterized in that: described correcting pattern comprises one at least with respect to a tilt oblique line of second angle of horizontal line, and two vertical lines, two vertical lines join with the two ends of this oblique line respectively.
9, CCD corrector according to claim 8 is characterized in that: described second angle is 45 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011398612A CN1167250C (en) | 1998-03-02 | 1998-03-02 | CCD corrector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011398612A CN1167250C (en) | 1998-03-02 | 1998-03-02 | CCD corrector |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB98100590XA Division CN1154339C (en) | 1998-03-02 | 1998-03-02 | Method for correcting charge coupled element and its apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1356822A CN1356822A (en) | 2002-07-03 |
| CN1167250C true CN1167250C (en) | 2004-09-15 |
Family
ID=4675473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011398612A Expired - Lifetime CN1167250C (en) | 1998-03-02 | 1998-03-02 | CCD corrector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1167250C (en) |
-
1998
- 1998-03-02 CN CNB011398612A patent/CN1167250C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN1356822A (en) | 2002-07-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6005682A (en) | Resolution enhancement by multiple scanning with a low-resolution, two-dimensional sensor array | |
| US5315411A (en) | Dithering mechanism for a high resolution imaging system | |
| JPS62502233A (en) | Method and apparatus for forming high resolution digital images with color information of photographic negatives | |
| JPS61227481A (en) | Method of fetching correction reference data in picture input device | |
| US5406066A (en) | Method and apparatus for correcting color registration error | |
| EP1343110A2 (en) | Image input apparatus | |
| EP0215847B1 (en) | Apparatus and method for forming digital images | |
| CN1167250C (en) | CCD corrector | |
| CN1154339C (en) | Method for correcting charge coupled element and its apparatus | |
| KR100505546B1 (en) | A scanner system with automatic compensation of positioning errors | |
| DE60025565T2 (en) | Optical scanning device and color image forming apparatus using the same | |
| CN1161960C (en) | Method for correcting multi-charge coupled element and its apparatus | |
| US6593559B2 (en) | Image readout apparatus and image readout method using the same | |
| WO1986005642A1 (en) | Apparatus for scanning and sampling real images | |
| CN1167251C (en) | Multi-CCD corrector | |
| US5251272A (en) | Image signal processing method and apparatus with correction for a secondary light source effect | |
| JPH0918674A (en) | Image reader | |
| CN1121110C (en) | Method and device for calibrating scanning arrangement | |
| JP3178718B2 (en) | Color image reader | |
| CN2387554Y (en) | Optical means having single photoelectric transfer module multiple images | |
| CN100358332C (en) | Scanning module | |
| EP0746138A1 (en) | Optical adjustment arrangement for a scanning system | |
| CN1092445C (en) | Regulation method for photoelectric mould set and pattern | |
| JP2522707B2 (en) | Image pickup device | |
| JPH10308845A (en) | Image reader |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: YUDONG OPTICAL CO., LTD. Free format text: FORMER OWNER: HONGYOU SCIENCE AND TECHNOLOGY CO LTD Effective date: 20070112 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20070112 Address after: Delaware Patentee after: Hongyou Science & Technology Co., Ltd. Address before: Hsinchu Science Industrial Park, Taiwan Patentee before: Hongyou Science and Technology Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20040915 |
|
| CX01 | Expiry of patent term |