CN101830122B - Accurate overprinting method for printing envelope postal codes - Google Patents
Accurate overprinting method for printing envelope postal codes Download PDFInfo
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- CN101830122B CN101830122B CN2009101533144A CN200910153314A CN101830122B CN 101830122 B CN101830122 B CN 101830122B CN 2009101533144 A CN2009101533144 A CN 2009101533144A CN 200910153314 A CN200910153314 A CN 200910153314A CN 101830122 B CN101830122 B CN 101830122B
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Abstract
The invention relates to an accurate overprinting method for printing envelope postal codes, which comprises the steps of: capturing an envelope image in real time by a camera; extracting gray level information and red domain information; approximating the gray level information to be a segment; seeking an envelope edge; establishing and updating an envelope edge model according to the continuity of continuously collected images; generating a code red box according to the red domain information; computing whether an average distance delta y between the successfully matched red box and the envelope edge model is within an allowable range of an envelope standard or not; if delta y is within the allowable range of the envelope standard, judging again whether a sequence number of the red box is 1 or not; if the sequence number of the red box is 1, emitting a command of printing a first postal code character in a current position to an envelope printer; if the sequence number of the red box is not 1, computing a distance delta n between the current red box Rn and the previous red box Rn-1; judging that delta n conforms to the envelope standard; and controlling the envelope printer to print corresponding postal code characters in the current position. In the accurate overprinting method, the interference of external factors is effectively eliminated with high control accuracy.
Description
Technical field
The present invention relates to a kind of printing envelope postal codes control method that is used for.
Background technology
General situation, for guaranteeing letter by the design path circulation, every envelope letter is posted to play from receipts and is completed successfully the letter sorting transhipment that all need pass through several times between the delivery work.
The Automated Sorting System of a large amount of equipments is all based on the Machine Vision Recognition to postcode at present.The zone that envelope standard GB/T1416-2003 regulation is filled in postcode is positioned at the ad-hoc location of envelope, and with reference to Fig. 1, and everybody separately and with golden red (PANTONE 1795C) square frame limits, and stipulates that simultaneously other red information must not appear in this zone.Be to improve the speed and the accuracy of machine recognition, the identification component of Automated Sorting System is always sought the zone with the red frame feature of postcode automatically,, and discern numerical character information in this zone.This technical characterictic requires postcode should as far as possible accurately print or write in the zone that red frame limits, to guarantee good recognition efficiency.
Automated Sorting System is can't be when red frame assigned address is distinguished out effective postcode, i.e. report letter sorting failure requires manual intervention.
The business letter business that comprises advertisement, statement etc. is the important component part of postal letter business.Envelope is printed and to be meant to read information such as addressee's postcode, name, address from the address (ADDR database, merges sender's inscription after the process of special-purpose envelope printer output to the envelope.The operating rate of high speed envelope printer can up to 20000 envelopes/hour more than.
The envelope printer output must meet related specifications to the contents and distribution on the envelope.Especially, the obligated assurance postcode of printer all the time can be exactly by turn chromatography advance in the red frame.But this point usually is difficult to guarantee in the practical application, and this is that there is the risk of two aspects in this because existing envelope all is to determine the print position of contents such as postcode indirectly by detecting the envelope edge:
The first, in fact this method is supposed to be used for to print the first distance apart from the envelope edge of the red frame of postcode and is determined that the spacing between each red frame is also determined simultaneously.
Though according to standard, there are fixing plan-position skew in the print position of postcode and envelope edge, but find in the practical operation that these difficult parameters to obtain very strict observing, particularly when internals being housed in the envelope, can change side-play amount inevitably.This makes by detecting the postcode print position of determining at the envelope edge error that becomes very big.
The second, there is technical uncertainty in the detection method at envelope edge itself.
With reference to Fig. 2, in the Y direction, make envelope be close to operation forward after the mechanical position limitation mechanism of side, Δ y can meet standard-required all the time like this.But there is the positional jitter on the Y direction during owing to the envelope high-speed cruising inevitably, can't realizes inhibition in full force and effect again in mechanism and the control, cause position excursion on this direction.
Photoelectric sensor is used in the directions X position of postcode initial character, detect the envelope front along after allow the envelope Δ x distance that moves on again.Because the envelope speed of service is higher, below two common factors can cause the drift of this direction position:
A envelope edge always exists paper scrap and burr, and this can influence the response time of photoelectric sensor
The stability of b photoelectric sensor and uniformity when main finger ring border illumination, humiture, envelope color etc. change, may influence the response time of sensor.
Summary of the invention
For the postcode coding Method of printing that overcomes existing envelope be subjected to the deficiency that extraneous factor is disturbed, control accuracy is low easily, the invention provides the accurate overprinting method that is used for printing envelope postal codes that a kind of effective elimination extraneous factor is disturbed, control accuracy is high.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of accurate overprinting method that is used for printing envelope postal codes may further comprise the steps:
1), the camera that will be used to gather the postcode coded image is installed in the envelope print system, postcode to be printed envelope is positioned at the visual range of described camera;
2), camera catches envelop image in real time, extracts half-tone information and red domain information from the original image of gathering;
3), half-tone information is approximately line segment, seek the envelope edge, set up and upgrade an envelope edge model according to the continuity of the image of continuous acquisition;
4), generate the red frame of coding according to red domain information, with the red frame coupling of red frame of described coding and default benchmark, if the match is successful, determine red frame sequence number, initial red frame sequence number is zero, adds 1 after the match is successful, and confirms that red frame sequence number is less than 7;
5), calculate the average distance Δ y of the red frame that the match is successful and envelope edge model whether in the scope of envelope standard permission, if in the scope that the envelope standard allows, judge again whether red frame sequence number is 1, as arnotto frame sequence number is 1, sends the instruction that current location is printed first postcode character to the envelope printer; Be not equal to 1 as arnotto frame sequence number, calculate the distance, delta n between current red frame Rn and the last red frame Rn-1, and judge that Δ n meets the envelope standard, control envelope printer is printed corresponding postcode character in current location.
Further, in described step 2) in, the original image of gathering is carried out luminance balance, and extract half-tone information, carry out edge sharpening again.
Further again, the diameter of effective overlay area of the camera lens of described camera is D, and the postcode frame boxes diagonal angle line length of standard is d, and the formed chord length in the cutting effective overlay area of camera lens, envelope edge is 1; The following requirement satisfied in the installation of head:
a.D＞3d；
b.l＞2d。
Beneficial effect of the present invention mainly shows: 1, effectively eliminate extraneous factor interference, control accuracy height; 2, the postcode frame boxes by preprinting on the identification envelope, directly determine the print position of every postcode, and then the print position of content such as definite address of the addressee, name, sender address, effectively improve the letter sorting efficient of Automated Sorting System, reduce the probability of manual intervention letter sorting, it is neat and artistic that assurance simultaneously prints envelope; The postcode that occurs when 3, avoiding fully carrying out the printing of high-speed and continuous envelope address (ADDR under the prior art can not accurately be overlapped the problem that engraves on red frame.
Description of drawings
Fig. 1 is the front schematic view of state's inner envelope, is state inner envelope B6, DL, ZL front schematic view.
Fig. 2 is the schematic diagram that the envelope edge is detected.
Fig. 3 is the schematic diagram that the CCD camera lens is installed on the envelope print system.
Fig. 4 is the image schematic diagram that camera is caught.
Fig. 5 is the process chart of image processing module.
Fig. 6 is the theory diagram of high speed envelope printer.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is further described.
With reference to Fig. 1～Fig. 6, a kind of accurate overprinting method that is used for printing envelope postal codes may further comprise the steps:
1), the camera 1 that will be used to gather the postcode coded image is installed in the envelope print system, postcode to be printed envelope is positioned at the visual range of described camera;
2), camera 1 catches envelop image in real time, extracts half-tone information and red domain information from the original image of gathering;
3), half-tone information is approximately line segment, seek the envelope edge, set up and upgrade an envelope edge model according to the continuity of the image of continuous acquisition;
4), generate the red frame of coding according to red domain information, with the red frame coupling of red frame of described coding and default benchmark, if the match is successful, determine red frame sequence number, initial red frame sequence number is zero, adds 1 after the match is successful, and confirms that red frame sequence number is less than 7;
5), calculate the average distance Δ y of the red frame that the match is successful and envelope edge model whether in the scope of envelope standard permission, if in the scope that the envelope standard allows, judge again whether red frame sequence number is 1, as arnotto frame sequence number is 1, sends the instruction that current location is printed first postcode character to the envelope printer; Be not equal to 1 as arnotto frame sequence number, calculate the distance, delta n between current red frame Rn and the last red frame Rn-1, and judge that Δ n meets the envelope standard, control envelope printer is printed corresponding postcode character in current location.
In described step 2) in, the original image of gathering is carried out luminance balance, and extract half-tone information, carry out edge sharpening again.
The diameter of effective overlay area of the camera lens of described camera 1 is D, and the postcode frame boxes diagonal angle line length of standard is d, and the formed chord length in the cutting effective overlay area of camera lens, envelope edge is l; The following requirement satisfied in the installation of head:
a.D＞3d；
b.l＞2d。
Figure below is the image signal that camera lens obtains.The diameter of the effective overlay area of note camera lens is D (mm), and the postcode frame boxes diagonal angle line length of standard is d (mm), and the formed chord length in the cutting effective overlay area of camera lens, envelope edge is l (mm).
For guarantee postcode finally exactly chromatography advance red frame, the installation of camera lens should be satisfied following requirement:
a.D＞3d
b.l＞2d
The handling process of the image processing module of present embodiment: whether step 1 circular test camera catches new image, when showing new images, check result receives immediately, finishing receiving the actual illumination condition of backsight environment carries out the appropriate brightness balance (step 3) obtains original image.
Process step 4 extracts half-tone information and red domain information respectively to step 8 from original image, handling by edge sharpening respectively increases the picture contrast again.
Generally should there be apparent in view optics contrast between envelope and the background, show as approximate line segment in the half-tone information after sharpening, step 6 attempts to seek the envelope edge by this principle, if failure, then cancel all follow-up processing flow, get back to step 1 and wait for new image.The envelope side information should show continuity in the consecutive image of catching successively, step 7 is according to this rule foundation and upgrade an envelope edge model.
The red domain information that step 8 obtains is used to seek postcode frame boxes after step 9 sharpening.According to the installation requirement of envelope standard code and aforementioned camera lens, except that postcode frame boxes, other and the approaching square frame of golden red (PANTONE 1795C) color can not appear in the camera viewing area.Step 10 generates the red frame of benchmark of specifying size and color according to the envelope standard, and step 11 is sought postcode frame boxes according to this benchmark in the information that step 9 obtains.If all follow-up processing flow are then cancelled in failure, get back to step 1 and wait for new image; If this red frame sequence number Rn (step 12) is then calculated in success.
According to the envelope standard, postcode frame boxes quantity is 6 equally, so whether step 13 pair this sequence number is legal in logic judges.Sequence number Rn surpasses at 6 o'clock and cancels all follow-up processing flow, gets back to step 1 and waits for new image.
Whether the average distance Δ y between the edge model that step 14,15 is calculated and the determining step 11 red frame that the match is successful and step 7 are set up is in the scope of envelope standard permission.If exceed allowed band, promptly cancel all follow-up processing flow, get back to step 1 and wait for new image.Sequence number Rn represented that current red frame was the first postcode frame boxes on this envelope at 1 o'clock, and the envelope printer should be printed first postcode character (step 16,17,18) in current location.Otherwise, the distance, delta n. step 20 that step 19 is calculated between current red frame (sequence number Rn) and last red frame (sequence number Rn-1) judges whether Δ n meets the envelope standard, as meet standard, then the envelope printer should be printed corresponding postcode character in current location, as do not meet standard-required, get back to step 1 and wait for new image.
Use present embodiment and make X616 high speed envelope printer.X616 envelope printer can 20000 envelopes/hour more than speed carry out the print job of envelope address (ADDR, addressee's postcode part can be finished red frame chromatography exactly automatically.
The key technical indexes
* the professional print job station that makes up based on the HP ink-jet technology
* adaptive 2 groups of x 3HP ink jet-print heads, effectively print range 76mm
* can resolve postcode automatically and realize that postage accords with will and dynamically adjusts
* operating speed is greater than 20000p/h (Chinese), letters specification B6-C4
* maximum printable precision 600x600dpi
X616 high speed envelope printer is to continue to develop gained on German RANA novel high speed specialty letter cuts the technical foundation of print job station DA616.
Claims (3)
1. accurate overprinting method that is used for printing envelope postal codes, it is characterized in that: described accurate overprinting method may further comprise the steps:
1), the camera that will be used to gather the postcode coded image is installed in the envelope print system, the postcode of waiting to print the GB/T1416-2003 shandardized envelope is positioned at the visual range of described camera, described postcode sash color is red;
2), camera catches envelop image in real time, extracts half-tone information and red domain information from the original image of gathering;
3), the half-tone information between envelope and the background after the sharpening shows as approximate line segment, seeks the envelope edge, set up and upgrade an envelope edge model according to the continuity of the image of continuous acquisition;
4), generate the red frame of coding according to red domain information, with the red frame coupling of red frame of described coding and default benchmark, if the match is successful, determine red frame sequence number, initial red frame sequence number is zero, adds 1 after the match is successful, and confirms that red frame sequence number is less than 7;
5), calculate the average distance Δ y of the red frame that the match is successful and envelope edge model whether in the scope of envelope standard permission, if in the scope that the envelope standard allows, judge again whether red frame sequence number is 1, as arnotto frame sequence number is 1, sends the instruction that current location is printed first postcode character to the envelope printer; Be not equal to 1 as arnotto frame sequence number, calculate the distance, delta n between current red frame Rn and the last red frame Rn-1, and judge whether Δ n meets the envelope standard, control envelope printer is printed corresponding postcode character in current location.
2. a kind of accurate overprinting method that is used for printing envelope postal codes as claimed in claim 1 is characterized in that: in described step 2) in, the original image of gathering is carried out luminance balance, and extract half-tone information, carry out edge sharpening again.
3. a kind of accurate overprinting method that is used for printing envelope postal codes as claimed in claim 1 or 2, it is characterized in that: the diameter of effective overlay area of the camera lens of described camera is D, the postcode frame boxes diagonal angle line length of standard is d, and the formed chord length in the cutting effective overlay area of camera lens, envelope edge is 1; The following requirement satisfied in the installation of head:
a.D＞3d
b.1＞2d。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101533144A CN101830122B (en) | 2010-02-19 | 2010-02-19 | Accurate overprinting method for printing envelope postal codes |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101533144A CN101830122B (en) | 2010-02-19 | 2010-02-19 | Accurate overprinting method for printing envelope postal codes |
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| CN101830122A CN101830122A (en) | 2010-09-15 |
| CN101830122B true CN101830122B (en) | 2011-11-23 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5324635B2 (en) | 2011-10-12 | 2013-10-23 | シャープ株式会社 | Printing device |
| JP5875404B2 (en) | 2012-02-21 | 2016-03-02 | キヤノン株式会社 | Printing apparatus, control method therefor, and program |
| JP5875406B2 (en) | 2012-02-22 | 2016-03-02 | キヤノン株式会社 | Printing apparatus, control method therefor, and program |
| CN111016449B (en) * | 2019-05-23 | 2021-07-23 | 深圳圣德京粤科技有限公司 | Method for adjusting positive and negative overprinting of ink-jet printing |
| CN114454637B (en) * | 2021-12-27 | 2022-12-09 | 深圳市汉森软件有限公司 | Image color register printing control method, device, equipment and storage medium |
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Application publication date: 20100915 Assignee: Songyang County Wonderful Advertising Co.,Ltd. Assignor: JIANG University OF TECHNOLOGY Contract record no.: X2023980037616 Denomination of invention: A Precise Overprinting Method for Envelope Postal Code Printing Granted publication date: 20111123 License type: Common License Record date: 20230706 |