CN1086262C - Test method for scanning boundary and its device - Google Patents
Test method for scanning boundary and its device Download PDFInfo
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- CN1086262C CN1086262C CN 97125465 CN97125465A CN1086262C CN 1086262 C CN1086262 C CN 1086262C CN 97125465 CN97125465 CN 97125465 CN 97125465 A CN97125465 A CN 97125465A CN 1086262 C CN1086262 C CN 1086262C
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- 238000010998 test method Methods 0.000 title 1
- 230000003287 optical effect Effects 0.000 claims abstract description 85
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000001514 detection method Methods 0.000 claims description 71
- 230000009471 action Effects 0.000 claims description 24
- 230000011664 signaling Effects 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 8
- 239000000654 additive Substances 0.000 claims description 7
- 230000000996 additive effect Effects 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 7
- 238000011112 process operation Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
Abstract
The present invention relates to a method for detecting scanning boundaries and a device thereof, which is used for detecting scanning boundaries of an image scanning device. The detecting device comprises a light source, a detecting unit, an image picking unit and a calculation processing unit. The detecting method comprises: (a) an initial optical signal is provided by the light source; (b) the initial optical signal is received by the detecting unit, and a detecting optical signal is sent out; (c) the detecting optical signal is received by the image picking unit, and a detecting pixel point is obtained; (d) the detecting pixel point and a reference pixel point in the image picking unit are calculated and processed by the calculation processing unit line by line, and a pixel calculation value is obtained; (e) the scanning boundaries are adjusted and detected by the image picking unit and the pixel calculation value.
Description
The present invention relates to a kind of detection method and device, particularly relate to a kind of detection method and device in order to detect a device of image scanning scanning boundary.
Existing device of image scanning, it scans one when scanned, is a known location decided at the higher level but not officially announced with a document alignment place (Adjustable tray) mostly, to calculate scanned border, the left and right sides.But, this method is often because of the parts assembly error, and the accuracy that causes measuring border, the scanned left and right sides reduces, and when after searching border, the left and right sides, adjusting charge coupled cell (CCD) position, also can cause charge coupled cell to adjust error, and adjust overlong time.
The object of the present invention is to provide a kind of detection method that can detect the device of image scanning scanning boundary automatically.
The object of the present invention is achieved like this, a kind of detection method of scanning boundary promptly is provided, it is in order to detect the one scan border of a device of image scanning, wherein, described device of image scanning has one scan form and and is arranged at detecting unit on the optical path, described scanning form has one scan border A, and in order to place the one scan thing among the A of its border, described detection method step comprises: an initial optical signal (a) is provided; (b) receive described initial optical signal by described detecting unit, and, send a detection optical signal according to described initial optical signal; (c) receive described detection optical signal, and, obtain one and detect pixel according to described detection optical signal; (d) described detection pixel and a built-in reference image vegetarian refreshments are carried out the calculation process operation, and obtain a Pixel calcualting value; And, carry out one and adjust action, and detect described scanning boundary (e) according to described Pixel calcualting value.
According to above-mentioned conception, wherein in this step (a), but provide action mat one light source of initial optical signal to realize.
According to above-mentioned conception, wherein this detecting unit can be a reflecting sign, and this reflecting sign can be arranged on the one scan form of this device of image scanning in the same plane, with this form at a distance of a regular length B.
According to above-mentioned conception, wherein afterwards, comprise that also step (f) receives this detection optical signal, and change the optical path of this detection optical signal in this step (b).
According to above-mentioned conception, wherein in this step (f), but the action mat one focus reflection unit that receives this detection optical signal realizes that and this focus reflection unit is in order to change the optical path of this detection optical signal.
According to above-mentioned conception, wherein in this step (c), but the action mat one image pickup unit that receives this detection optical signal realizes that and this image pickup unit obtains detecting pixel according to this detection optical signal.
According to above-mentioned conception, wherein this image pickup unit is according to the built-in reference image vegetarian refreshments of this detecting unit.
According to above-mentioned conception, wherein this image pickup unit can be a charge coupled cell.
According to above-mentioned conception, wherein in this step (d), but mat one operation processing unit is finished this calculation process action.
According to above-mentioned conception, wherein this operation processing unit can be a hardware circuit.
According to above-mentioned conception, wherein this operation processing unit can be a software program.
According to above-mentioned conception, wherein in step (d), this calculation process action can be an additive operation and handles action, and this Pixel calcualting value can be the difference of this detection pixel value and this reference pixel value.
According to above-mentioned conception, wherein in this step (e), but mat one image pickup unit is finished this adjustments according to this Pixel calcualting value and is moved.
According to above-mentioned conception, wherein action can be adjusted according to this in this image pickup unit, obtains and corresponding first pixel of this scanning boundary and one second pixel.
According to above-mentioned conception, wherein the one scan pixel between this first pixel and this second pixel is in order to receive a scanned scanned optical signalling that sends.
Another object of the present invention is to provide a kind of checkout gear that can detect the device of image scanning scanning boundary automatically.
The object of the present invention is achieved like this, a kind of checkout gear of scanning boundary promptly is provided, it is in order to detect the one scan border of a device of image scanning, wherein, this device of image scanning has the one scan form, and this scanning form has one scan border A, in order to place the one scan thing among the A of its border, this checkout gear comprises: a light source, and this light source is in order to provide an initial optical signal; One detecting unit is arranged on the optical path of this initial optical signal, in order to receiving this initial optical signal, and produces a detection optical signal according to this initial optical signal; One image pickup unit, be arranged on the optical path of this detection optical signal, this image pickup unit is according to the built-in reference image vegetarian refreshments of this detecting unit, and this image pickup unit is in order to receive this detection optical signal, and, obtain one and detect pixel according to this detection optical signal; An and operation processing unit, this operation processing unit is electrically connected on this image pickup unit, and in order to this reference image vegetarian refreshments and this detection pixel are carried out calculation process, and produce a Pixel calcualting value, adjust action so that this image pickup unit carries out one according to this Pixel calcualting value, and detect this scanning boundary.
According to above-mentioned conception, wherein this detecting unit can be a reflecting sign, and this reflecting sign can be provided with the scanning form of this device of image scanning in the same plane, with this form at a distance of a regular length B.
According to above-mentioned conception, wherein also comprise a focus reflection device, be arranged between this detecting unit and this image pickup unit, in order to change the optical path of this detection optical signal.
According to above-mentioned conception, wherein this image pickup unit can be a charge coupled cell.
According to above-mentioned conception, wherein this operation processing unit can be a hardware circuit.
According to above-mentioned conception, wherein this operation processing unit can be a software program.
According to above-mentioned conception, wherein this calculation process action can be an additive operation and handles action, and this Pixel calcualting value can be the difference of this detection pixel value and this reference pixel value.
According to above-mentioned conception, wherein this image pickup unit can be according to built-in one first original image vegetarian refreshments of this scanning boundary and one second original image vegetarian refreshments.
According to above-mentioned conception, wherein this image pickup unit can be according to this Pixel calcualting value, with this Pixel calcualting value and this first original image vegetarian refreshments addition, and, and obtain respectively and corresponding one first pixel of this scanning boundary and one second pixel this Pixel calcualting value and this second original image vegetarian refreshments addition.
According to above-mentioned conception, wherein the scanning element point between this first pixel and this second pixel is in order to receive a scanned scanned optical signalling that sends.
The advantage of the inventive method and device is that it can accurately measure scanning boundary, and assembling is raised the efficiency easily.
Below in conjunction with accompanying drawing, embodiments of the invention are described, wherein:
Fig. 1 is embodiment of the invention structure assembling schematic diagram;
Fig. 2 is an embodiment of the invention operation principle schematic diagram.
At first, see also Fig. 1, it is the structure assembling schematic diagram of preferred embodiment of the present invention, comprise among the figure: a reflection type image scanning means, it has one scan form 11, and this scanning form 11 has one scan border A, and a reflecting sign 2, wherein this reflecting sign 2 is provided with to such an extent that be positioned at same plane with this scanning form 11, and this reflecting sign 2 scans form 11 at a distance of a regular length B with this.
Wherein, the scanning form 11 of this reflection type image scanning means is scanned in order to place one, and this is scanned to be positioned in the scanning boundary A scope that this scanning form 11 constituted, the initial optical signal that this scanned reception one light source is provided, and reflection obtains a scanned optical signalling, seeing through a focus reflection unit by scanned optical signalling, deliver to a charge coupled cell; And wherein this reflecting sign 2 and obtains a detection optical signal according to this initial optical signal reflex in order to receiving the initial optical signal that a light source is provided.
The included charge coupled cell of this device of image scanning is according to the setting of this reflecting sign 2, a built-in reference image vegetarian refreshments, and before this device of image scanning carries out scan operation, this initial optical signal is projected to this reflecting sign 2 and sends this detection optical signal, and this charge coupled cell receives this detection optical signal, obtains one and detects pixel.
The present invention's mat operation processing unit of being electrically connected on this charge coupled cell again should detect pixel and this reference image vegetarian refreshments and carries out an additive operation and handle operation, can obtain a Pixel calcualting value.And wherein this charge coupled cell according to the setting of this scanning boundary A, with built-in one first original image vegetarian refreshments and one second original image vegetarian refreshments, this charge coupled cell can be according to this Pixel calcualting value like this, with this Pixel calcualting value and this first original image vegetarian refreshments addition, and with this Pixel calcualting value and this second original image vegetarian refreshments addition, and obtain respectively and corresponding one first pixel of this scanning boundary A and one second pixel, also the scanning element point between this first picture pixel of mat and this second pixel receives this scanned scanning thing optical signalling that sends.
See also operation principle schematic diagram shown in Figure 2, as can be seen from Figure 2: one scan form 11, one reflecting sign 2, the set of lenses 4 that one charge coupled cell 3 and a focus reflection unit are included, the scanning boundary A that wherein should scan form 11 is between border C, width between D, and the center line E of this reflecting sign 2 is a regular length B at a distance of this scanning boundary point C, have on this charge coupled cell 3 according to this reflecting sign 2 and a built-in reference image vegetarian refreshments R1, and this charge coupled cell 3 is according to the boundary point C of this scanning boundary A, D is built-in one first original image vegetarian refreshments R2 and one second original image vegetarian refreshments R3 respectively.
Provide this initial optical signal to go forward side by side before the line scanning action at the light source of device of image scanning, has this detection optical signal of producing according to this reflecting sign 2 on this charge coupled cell 3 and correspondence obtains one and detects pixel E ', and should detecting pixel E ', mat one operation processing unit carried out an additive operation with this reference image vegetarian refreshments R1, can obtain a Pixel calcualting value for (E '-R1), again with this Pixel calcualting value (E '-R1) respectively with this first original image vegetarian refreshments R2 and this second original image vegetarian refreshments R3 addition, obtain respectively and this scanning boundary point C, corresponding one first pixel C ' of D and one second pixel D ', like this can this first pixel C ' of mat and this second pixel D ' between the scanning element point, scannedly carry out scan operation to being positioned over one of this scanning boundary A inside.
Suppose to be scanned scanning of letter size (width needs 2550 pixel) of 300dpi to a resolution, and 2650 pixel of 100 pixel to the of the pixel of built-in this charge coupled cell 3 (pixel) represent this first original image vegetarian refreshments R2 respectively, this second original image vegetarian refreshments R3, and according to placing the scanning boundary A that this scanned one scan form 11 is had, that is, if charge coupled cell 3 does not produce assembly error, the scanning boundary point C of this scanning boundary A then, D should fall within respectively on this first original image vegetarian refreshments R2 (the 100th pixel) and this second original image vegetarian refreshments R3 (the 2650th pixel) after scanning imagery.
Have again, the 50th pixel of built-in charge coupled cell 3 is this reference image vegetarian refreshments R1, that is, if charge coupled cell 3 does not produce assembly error, then this detection optical signal of being produced of this reflecting sign 2 is after imaging, should drop on this reference image vegetarian refreshments R1 (the 50th pixel), but because device of image scanning the parts assembly error can occur when assembling, therefore, reflecting sign 2 can't fall within on this reference image vegetarian refreshments R1 at resulting detection pixel E ' behind the scanning imagery, and deviation to some extent illustrates as follows now:
When carrying out the one scan action, it is the 40th pixel that this charge coupled cell 3 reads the detection pixel E ' that detection optical signal hypothesis that this reflecting sign 2 produced corresponds on this charge coupled cell 3, then mat is electrically connected on an operation processing unit 3 of this charge coupled cell, carry out an additive operation and handle operation: be i.e. 40-50=-10 (pixel), obtain a Pixel calcualting value (10), this value representation charge coupled cell 3 is because of assembly error, and cause scan-image to be offset 10 pixel, this moment, this charge coupled cell 3 of mat was according to this Pixel calcualting value (10), carry out one and adjust action, R2 is adjusted into-10+100=90 (pixel) with this first original image vegetarian refreshments, and obtain this first pixel C ' (the 90th pixel), and R3 is adjusted into-10+2650=2640 (pixel) with this second original image vegetarian refreshments, and obtain this second pixel D ' (the 2640th pixel), adjusted this first pixel C ' (the 90th pixel) can be positioned over the scanned scanned optical signalling that sends in this scanning form 11 in order to reception to the scanning element point that is comprised between this second pixel D ' (the 2640th pixel).
Certainly, but the present invention also mat answers the scanned required scanning boundary of different width dimensions, and the built-in different reference image vegetarian refreshments R1 and the first original image vegetarian refreshments R2, the second original image vegetarian refreshments R3, to scan the scanned of various sizes, and mat of the present invention is provided with this reflecting sign 2, the mode that obtains a detection optical signal also comprises other execution modes, that is, suppose that this device of image scanning is a transmission-type device of image scanning, then but mat is installed a transmission sign, make this initial optical signal see through this transmission sign, obtain a detection optical signal.
In addition, the present invention can be applicable in a hand held device of image scanning and the sheet-fed image scanning means, and this reflecting sign 2 not only can be provided with this scanning form 11 and is positioned at same plane, as long as under the situation that does not influence these electric charge male part 3 these scanned scanned optical signallings that produce of reception, this reflecting sign 2 also can be arranged on the arbitrary optical path of this initial optical signal that this light source provides, and can reach the purpose of detection equally.
Present technique field personage can carry out various modifications and change to the present invention, but they all should be included in the claims.
Claims (26)
1. the detection method of a scanning boundary, it is in order to detect the one scan border of a device of image scanning, wherein, described device of image scanning has one scan form and and is arranged at detecting unit on the optical path, described scanning form has one scan border A, in order to place the one scan thing among the A of its border, described detection method step comprises:
(a) provide an initial optical signal;
(b) receive described initial optical signal by described detecting unit, and, send a detection optical signal according to described initial optical signal;
(c) receive described detection optical signal, and, obtain one and detect pixel according to described detection optical signal;
(d) described detection pixel and a built-in reference image vegetarian refreshments are carried out the calculation process operation, and obtain a Pixel calcualting value; And
(e), carry out one and adjust action, and detect described scanning boundary according to described Pixel calcualting value.
2. detection method as claimed in claim 1 wherein, in described step (a), but provides acts may mat one light source of described initial optical signal to realize.
3. detection method as claimed in claim 1, wherein, described detecting unit can be a reflecting sign, and described reflecting sign can be provided with the one scan form of described device of image scanning in the same plane, with described form at a distance of a regular length B.
4. detection method as claimed in claim 1 wherein, in described step (b) afterwards, also comprises step:
(f) receive described detection optical signal, and change the optical path of described detection optical signal.
5. detection method as claimed in claim 4, wherein, in described step (f), but action mat one focus reflection that receives described detection optical signal realizes that and described focus reflection unit is in order to change the optical path of described detection optical signal.
6. detection method as claimed in claim 1, wherein, in described step (c), but the action mat one image pickup unit that receives described detection optical signal realizes that and described image pickup unit obtains described detection pixel according to described detection optical signal.
7. detection method as claimed in claim 6, wherein, described image pickup unit is according to the built-in reference image vegetarian refreshments of described detecting unit.
8. detection method as claimed in claim 6, wherein, described image pickup unit can be a charge coupled cell.
9. detection method as claimed in claim 1, wherein, in the described step (d), but mat one operation processing unit realizes described calculation process action.
10. detection method as claimed in claim 9, wherein, described operation processing unit can be a hardware circuit.
11. detection method as claimed in claim 9, wherein, described operation processing unit can be a software program.
12. detection method as claimed in claim 1, wherein, in described step (d), described calculation process action can be an additive operation and handles action, and described Pixel calcualting value can be the difference of described detection pixel value and described reference pixel value.
13. detection method as claimed in claim 1, wherein, in described step (e), but described adjustment action is finished according to described Pixel calcualting value in mat one image pickup unit.
14. detection method as claimed in claim 13, wherein, described image pickup unit can be according to described scanning boundary, built-in one first original image vegetarian refreshments and one second original image vegetarian refreshments.
15. detection method as claimed in claim 14, wherein, described image pickup unit can be according to described Pixel calcualting value, with described Pixel calcualting value and the described first original image vegetarian refreshments addition, and, and obtain respectively and corresponding one first pixel of described scanning boundary and one second pixel described Pixel calcualting value and the described second original image vegetarian refreshments addition.
16. detection method as claimed in claim 15, wherein, the one scan pixel between described first pixel and described second pixel is in order to receive a scanned scanned optical signalling that sends.
17. the checkout gear of a scanning boundary, it is in order to detect the one scan border of a device of image scanning, wherein, described device of image scanning has the one scan form, described scanning form has one scan border A, and in order to place the one scan thing among the A of its border, described checkout gear comprises:
One light source, described light source is in order to provide an initial optical signal;
One detecting unit is arranged on the optical path of described initial optical signal, in order to receiving described initial optical signal, and produces a detection optical signal according to described initial optical signal;
One image pickup unit, be arranged on the optical path of described detection optical signal, described image pickup unit is according to the built-in reference image vegetarian refreshments of described detecting unit, described image pickup unit is in order to receive described detection optical signal, and, obtain one and detect pixel according to described detection optical signal; And
One operation processing unit, described operation processing unit is electrically connected on described image pickup unit, and in order to described reference image vegetarian refreshments and described detection pixel are carried out calculation process, and obtain a Pixel calcualting value, adjust action so that described image pickup unit carries out one according to described Pixel calcualting value, and detect described scanning boundary.
18. checkout gear as claimed in claim 17, wherein, described detecting unit can be a reflecting sign, and described reflecting sign can be provided with the one scan form of described device of image scanning in the same plane, with described form at a distance of a regular length B.
19. checkout gear as claimed in claim 17, wherein, it also comprises a focus reflection device, is arranged between described detecting unit and the described image pickup unit, in order to change the optical path of described detection optical signal.
20. checkout gear as claimed in claim 17, wherein, described image pickup unit can be a charge coupled cell.
21. checkout gear as claimed in claim 17, wherein, described computing place gets the unit and can be a hardware circuit.
22. checkout gear as claimed in claim 17, wherein, described operation processing unit can be a software program.
23. checkout gear as claimed in claim 17, wherein, described calculation process action can be an additive operation and handles action, and described Pixel calcualting value can be the difference of described detection pixel value and described reference pixel value.
24. checkout gear as claimed in claim 17, wherein said image pickup unit can be according to described scanning boundary, built-in one first original image vegetarian refreshments and one second original image vegetarian refreshments.
25. checkout gear as claimed in claim 17, wherein, described image pickup unit can be according to described Pixel calcualting value, with described Pixel calcualting value and the described first original image vegetarian refreshments addition, and, and obtain respectively and corresponding one first pixel of described scanning boundary and one second pixel described Pixel calcualting value and the described second original image vegetarian refreshments addition.
26. checkout gear as claimed in claim 25, wherein, the one scan pixel between described first pixel and described second pixel is in order to receive the scanned scanned optical signalling that sends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97125465 CN1086262C (en) | 1997-12-08 | 1997-12-08 | Test method for scanning boundary and its device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97125465 CN1086262C (en) | 1997-12-08 | 1997-12-08 | Test method for scanning boundary and its device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1219820A CN1219820A (en) | 1999-06-16 |
| CN1086262C true CN1086262C (en) | 2002-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97125465 Expired - Lifetime CN1086262C (en) | 1997-12-08 | 1997-12-08 | Test method for scanning boundary and its device |
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| Country | Link |
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| CN (1) | CN1086262C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101478627B (en) * | 2008-01-04 | 2011-08-31 | 虹光精密工业（苏州）有限公司 | Video capture apparatus and method |
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1997
- 1997-12-08 CN CN 97125465 patent/CN1086262C/en not_active Expired - Lifetime
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| Publication number | Publication date |
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| CN1219820A (en) | 1999-06-16 |
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Owner name: YUDONG OPTICAL CO., LTD. Free format text: FORMER OWNER: HONGYOU SCIENCE AND TECHNOLOGY CO LTD Effective date: 20070112 |
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