CN201927052U - Bar code image correcting device based on track codes - Google Patents
Bar code image correcting device based on track codes Download PDFInfo
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- CN201927052U CN201927052U CN201020213051XU CN201020213051U CN201927052U CN 201927052 U CN201927052 U CN 201927052U CN 201020213051X U CN201020213051X U CN 201020213051XU CN 201020213051 U CN201020213051 U CN 201020213051U CN 201927052 U CN201927052 U CN 201927052U
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- bar code
- code image
- sign indicating
- indicating number
- correct
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Abstract
The utility model discloses a bar code image correcting device based on track codes. The device comprises a scanning unit, an extracting unit connected with the scanning unit, a computing unit connected with the extracting unit, and a correcting unit connected with the computing unit. Compared with the prior art, the bar code image correcting device firstly correct each bar unit and each empty unit of the track codes and then utilizes the corrected track codes to correct bar code images, thereby greatly improving the bar code image correcting accuracy.
Description
[technical field]
The utility model relates to a kind of means for correcting of bar code image, particularly a kind of bar code image means for correcting based on the track sign indicating number.
[background technology]
Barcode technology is an emerging technology that integrates coding, printing, identification, data acquisition and processing (DAP) that grows up on computer technology and infotech basis.Barcode technology is because its identification is quick, accurate, reliable and low cost and other advantages, be widely used in fields such as commerce, taking care of books, storage, post and telecommunications, traffic and Industry Control, and certainly will in " Internet of Things " that rise gradually used, bring into play great function.
The bar code that is widely used at present comprises bar code and two-dimensional bar code.Bar code claims linear bar code to be made up of a plurality of " bars " that are arranged in parallel and " sky " unit again, and bar code information is expressed by bar and empty different in width and position.Bar code is not then expressed any information just in a direction (generally being horizontal direction) expressing information in vertical direction, so information capacity and space availability ratio are lower, and promptly can't discern after bar code is damaged.
Two-dimensional bar code is made up of the chequered with black and white particular geometric figure that distributes on two-dimensional directional according to certain rules, and its information capacity is big, uses very extensive.
All exist in many bar codes of the prior art (particularly two-dimensional bar code) by railway line (as shown in Figure 3) along straight line is arranged and black and white module interlaced with each other is formed.The effect of railway line is by the image coordinate that obtains each module centers whole bar code image to be proofreaied and correct.Yet in the prior art, the coordinate of each module centers point obtains separately by scan mode, and the coordinate of each module centers point exists than mistake, and is bigger to the correct influences of bar code image.
[summary of the invention]
For the coordinate that solves each module centers point in the prior art exists than mistake, the problem bigger to the correct influences of bar code image, the utility model provides a kind of bar code image means for correcting based on the track sign indicating number.
The utility model solves the problems of the technologies described above the technical scheme of being taked and provides a kind of bar code image means for correcting based on the track sign indicating number, and wherein, this device comprises:
Scanning element scans this bar code image;
Extraction unit is connected with scanning element;
Computing unit is connected with extraction unit; And
Correcting unit is connected with correcting unit.
Compared with prior art, the utility model is proofreaied and correct each bar, the dummy cell of track sign indicating number earlier, utilizes the track sign indicating number of proofreading and correct that bar code image is proofreaied and correct again, has improved the calibration accuracy of bar code image greatly.
[description of drawings]
Can with reference to the accompanying drawings and by example the utility model be described more specifically, in the accompanying drawings:
Fig. 1 is the module map based on the bar code image means for correcting of track sign indicating number according to the utility model one embodiment;
Fig. 2 is the process flow diagram based on the bar code image means for correcting of track sign indicating number according to the utility model one embodiment;
Fig. 3 is a kind of bar code image synoptic diagram that comprises the track sign indicating number; And
Fig. 4 is the enlarged diagram of the part track sign indicating number of bar code image among Fig. 3.
[embodiment]
Below in conjunction with drawings and Examples the utility model is elaborated.
The utility model provides a kind of bar code image means for correcting based on the track sign indicating number.This device at first extracts the track sign indicating number in the bar code image, and this track sign indicating number is proofreaied and correct, and utilizes the track sign indicating number of this correction that bar code image is proofreaied and correct again, can improve the accuracy that bar code image is proofreaied and correct greatly.
See also Fig. 1, the bar code image means for correcting based on the track sign indicating number of the present utility model mainly comprises scanning element 10, extraction unit 20, computing unit 30 and correcting unit 40.
Particularly, please in the lump referring to Fig. 2 to Fig. 4, Fig. 2 is the process flow diagram based on the bar code image means for correcting of track sign indicating number according to the utility model one embodiment; Fig. 3 is a kind of bar code image synoptic diagram that comprises the track sign indicating number; And Fig. 4 is the enlarged diagram of the part track sign indicating number of bar code image among Fig. 3.
At first, utilize scanning element 10 scannings one width of cloth bar code image, obtain the track sign indicating number in this bar code image, general track sign indicating number comprises a horizontal track sign indicating number and a vertical track sign indicating number, certainly, horizontal track sign indicating number all adopts identical method to proofread and correct with vertical track sign indicating number.
Then, utilize extraction unit 20 to extract in the track sign indicating numbers some, the module coordinate of dummy cell and the image coordinate of module centers.
Next, utilize computing unit 30 this module coordinate and the above polynomial equation of this image coordinate substitution secondary can be drawn the general correction coefficient of each bar, dummy cell.
At last, correcting unit 40 is based on this general correction coefficient and utilize correcting unit that all bars of track sign indicating number, the image coordinates in the dummy cell module are proofreaied and correct, promptly obtain the track sign indicating number proofreaied and correct, utilize the track sign indicating number of this correction that this bar code image is proofreaied and correct again and can improve the accuracy that bar code image is proofreaied and correct greatly.
In an embodiment of the present utility model, computing unit 30 utilizes following quadratic polynomial to calculate the general correction coefficient of track sign indicating number:
x＝a1m
2+b1m+c1
y＝a2m
2+b2m+c2
Wherein, x, y are the image coordinate of module centers, m is this module coordinate, can solve general correction coefficient a1, b1, c1, a2, b2, the c2 of track sign indicating number according to three groups of x, y, m value, utilizes this general correction coefficient value to proofread and correct the image coordinate of this track sign indicating number module centers.Thereby the track sign indicating number that obtains proofreading and correct utilizes the track sign indicating number of proofreading and correct that this bar code image is proofreaied and correct and can improve the accuracy that bar code image is proofreaied and correct greatly.
In another embodiment of the present utility model, computing unit 30 can also utilize following cubic polynomial to calculate the general correction coefficient of track sign indicating number:
x＝a1m
3+b1m
2+c1m+d1
y＝a2m
3+b2m
2+c2m+d2
Wherein, x, y are the image coordinate of this module, and m is this module coordinate, find the solution general correction coefficient a1, b1, c1, d1, a2, b2, c2, d2 according to four groups of x, y, m value, equally, utilize this general correction coefficient value to proofread and correct to the image coordinate of this track sign indicating number module centers.Thereby the track sign indicating number that obtains proofreading and correct utilizes the track sign indicating number of proofreading and correct that this bar code image is proofreaied and correct again and can improve the accuracy that bar code image is proofreaied and correct greatly.
Compared with prior art, the utility model is proofreaied and correct each bar, the dummy cell of track sign indicating number earlier, utilizes the track sign indicating number of proofreading and correct that bar code image is proofreaied and correct again, has improved the calibration accuracy of bar code image greatly.
In the above-described embodiments, only the utility model has been carried out exemplary description, but those skilled in the art can carry out various modifications to the utility model after reading present patent application under the situation that does not break away from spirit and scope of the present utility model.
Claims (1)
1. bar code image means for correcting based on the track sign indicating number is characterized in that described device comprises:
Scanning element;
Extraction unit is connected with described scanning element;
Computing unit is connected with described extraction unit; And
Correcting unit is connected with described computing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020213051XU CN201927052U (en) | 2010-06-01 | 2010-06-01 | Bar code image correcting device based on track codes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020213051XU CN201927052U (en) | 2010-06-01 | 2010-06-01 | Bar code image correcting device based on track codes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201927052U true CN201927052U (en) | 2011-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201020213051XU Expired - Fee Related CN201927052U (en) | 2010-06-01 | 2010-06-01 | Bar code image correcting device based on track codes |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105046183A (en) * | 2015-07-22 | 2015-11-11 | 福建新大陆自动识别技术有限公司 | Decoding method and system for distorted QR (Quick Response) code |
-
2010
- 2010-06-01 CN CN201020213051XU patent/CN201927052U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105046183A (en) * | 2015-07-22 | 2015-11-11 | 福建新大陆自动识别技术有限公司 | Decoding method and system for distorted QR (Quick Response) code |
| CN105046183B (en) * | 2015-07-22 | 2017-07-18 | 福建新大陆自动识别技术有限公司 | The coding/decoding method and system of a kind of distortion QR codes |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110810 Termination date: 20180601 |
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| CF01 | Termination of patent right due to non-payment of annual fee |