CN103434290A - Digital embroidered cloth printing method capable of realizing intelligent visual guidance - Google Patents
Digital embroidered cloth printing method capable of realizing intelligent visual guidance Download PDFInfo
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- CN103434290A CN103434290A CN2013104155488A CN201310415548A CN103434290A CN 103434290 A CN103434290 A CN 103434290A CN 2013104155488 A CN2013104155488 A CN 2013104155488A CN 201310415548 A CN201310415548 A CN 201310415548A CN 103434290 A CN103434290 A CN 103434290A
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- 239000004744 fabric Substances 0.000 title claims abstract description 88
- 238000007639 printing Methods 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000000007 visual effect Effects 0.000 title abstract 4
- 238000012545 processing Methods 0.000 claims abstract description 9
- 230000001105 regulatory effect Effects 0.000 claims abstract description 4
- 239000007921 spray Substances 0.000 claims description 53
- 230000004438 eyesight Effects 0.000 claims description 18
- 230000008569 process Effects 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 4
- 238000007641 inkjet printing Methods 0.000 abstract description 2
- 230000001276 controlling effect Effects 0.000 abstract 1
- 238000003384 imaging method Methods 0.000 description 4
- 238000012937 correction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000003086 colorant Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000004144 decalcomania Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000003702 image correction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004379 myopia Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
- B41J3/4078—Printing on textile
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2203/00—Embodiments of or processes related to the control of the printing process
- B41J2203/01—Inspecting a printed medium or a medium to be printed using a sensing device
- B41J2203/011—Inspecting the shape or condition, e.g. wrinkled or warped, of a medium to be printed before printing on it
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Abstract
The invention discloses a digital embroidered cloth printing method capable of realizing intelligent visual guidance. According to the digital embroidered cloth printing method, embroidered cloth is a cross-stitch. The digital embroidered cloth printing method comprises the following specific steps: (a) regulating the rotating speed of a belt guiding machine to be matched with a printer, and stopping the belt guiding machine after conveying the to-be-printed embroidered cloth to a digital printing region; (b) carrying out image acquisition by utilizing a long-line-array CIS (contact image sensor) camera; (c) after acquiring an image, transmitting data to a PC to carry out image processing; (d) positioning all grid regions to be subjected to pattern printing on a cross-stitch image; (e) controlling an ink-jet printing head to print a correct pattern on an accurate position according to the texture situations of the embroidered cloth positioned by visual guidance; (f) then returning to the step (a). Compared with the prior art, an intelligent visual guidance positioning function of a digital printer is realized by adding the machine vision of the long-line-array CIS camera, so that digital printing facilities cannot be influenced by factors such as the material deformation of a printed object, mechanical motion errors of the facilities and the like any more, thereby realizing accurate pattern printing.
Description
Technical field
The present invention relates to a kind of jet printing method, relate in particular to a kind of embroidered cloth digital spray printing method that realizes the intelligent vision guiding.
Background technology
The cross embroidery printer is called for short all-purpose printer, normally by conduction band machine, adds print module and forms, and can be applied in the print out task of large format and the long breadth of super large, is the contactless ink jet printing type high-tech number printed apparatus of a kind of and object.The major function of cross embroidery printer be by embroidery figure pattern spray printing on cross-stitch cloth, make and do not need to see again drawing in the embroidery process, also without frame and some grid, but directly embroider according to the different colours of pattern on the stamp cross embroidery, greatly shorten the embroidery time, reduced the embroidery difficulty.
Need to by pattern like clockwork spray printing to each cage, lattice partially.But because cross embroidery cloth is flexible material, self is ductile, to expand out than the cloth of length and width (bandpass is the 1.5m left and right), while by conduction band machine, being sent to print area, its texture phenomenon that can be distorted can't guarantee the smooth of cloth in print procedure, and on cross-stitch cloth between spray printing grid and grid the distance between adjacent aperture very narrow, be generally about 1mm, positioning requirements is very high, slightly has dislocation and just is easy to spray printing to adjacent square; Add between conduction band machine and printer the kinematic error of self, can make the step-length of cloth actual motion and theoretical step size inconsistent.Above-mentioned these factors can't solve according to current technological means, all can cause finally can't will locating the decalcomania spray printing on cross-stitch cloth accurately.
Summary of the invention
Purpose of the present invention just is to provide a kind of the problems referred to above that solved, advanced line scanning before printing, then the distortion situation of cloth is mapped on the pattern model and obtains print area, control printer and print at assigned address, realize the embroidered cloth digital spray printing method of intelligent vision guiding.
To achieve these goals, the technical solution used in the present invention is: a kind of embroidered cloth digital spray printing method that realizes the intelligent vision guiding, and described embroidered cloth is cross-stitch cloth, concrete steps are as follows,
A. the rotating speed of regulating conduction band machine coordinates printer, sets the cloth length that goes out in certain period, stops after embroidered cloth to be printed is delivered to the digital spray printing zone;
B. carry out IMAQ with the long-line array CIS camera of external trigger formula;
C. gather after image and data are sent to PC carry out the image processing, obtain 1:1 cross-stitch cloth image clearly;
D. orient the zones of the grid for the pattern spray printing all on the cross-stitch cloth image, reflect the texture variations situation of cross-stitch cloth;
E. the embroidered cloth texture situation of orienting according to vision guide, control ink jet-print head spray printing on position accurately and go out correct pattern;
F. then get back to again step a, until whole cross embroidery pattern printed, thereby obtain the finished product of 100% accurate stamp cross embroidery;
As preferably, in step b, the image sensing cell of described long-line array CIS camera is the CIS sensor, form the arrangement mode of long-line array, be the CIS sensor of the word order of a level that meets length requirement, or be by dislocation up and down the sensor that different length requires that meets that the Z-shaped arrangement mode forms by many short CIS sensors;
As preferably, the rate respectively of described CIS sensor is 300dpi, 600dpi or 1200dpi;
As preferably, the triggering mode of described CIS camera adopts the external trigger mode, using the code device signal of supporting installation on the conduction band machine electric rotating machine as the external trigger signal;
As preferably, described code device signal carries out process of frequency multiplication;
As preferably, in step c, the lateral resolution of the described embroidered cloth image collected determines by the resolution ratio of CIS sensor, and longitudinal frame is determined jointly by CIS collected by camera speed and embroidered cloth movement velocity.
Compared with prior art, the invention has the advantages that: the intelligent vision guiding positioning function that realizes Numerical Control Printer by the machine vision that adds long-line array CIS camera, make jet-printing equipment no longer be subject to the impact of the factors such as printing objects material and equipment self mechanical movement error, thereby realize precisely errorless pattern spray printing.Cardinal principle is for to be scanned embroidered cloth to be printed by long-line array CIS camera, obtain the image that 1:1 clearly reflects actual embroidered cloth texture situation really, can orient each spray printing grid position, then adjust the spray printing position of digital spray printing head according to the texture distortion situation of embroidered cloth, thereby control printer, at assigned address, print accurately the expection pattern.
The accompanying drawing explanation
The workflow schematic diagram that Fig. 1 is the embodiment of the present invention;
The collection effect figure that Fig. 2 is embroidered cloth of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Embodiment 1: referring to Fig. 1, and a kind of embroidered cloth digital spray printing method that realizes the intelligent vision guiding, described embroidered cloth is cross-stitch cloth, concrete steps are as follows,
A. the rotating speed of regulating conduction band machine coordinates printer, sets the cloth length that goes out in certain period, stops after embroidered cloth to be printed is delivered to the digital spray printing zone;
The rotating speed of conduction band machine and each number of turns of rotating were only adjusted once just passable before the entire volume embroidered cloth starts spray printing, and rotating speed is relevant with image capture module, spray printing fabric width and shower nozzle mechanical location structure etc., can pre-set the parameters such as conventional various rotating speeds and the rotation number of turns, directly select to get final product.In follow-up spray printing process, directly according to the rotating speed of having confirmed before, the follow-up embroidered cloth with spray printing is gone to the spray printing zone after one section embroidered cloth of spray printing, so the adjusting time can not affect spray printing efficiency.
Conduction band machine, by electric machine rotation, drives embroidered cloth through CIS camera below, by camera, the embroidered cloth of process is carried out to imaging, after carrying the embroidered cloth of certain-length, be generally the length of electric machine rotation 2 circles, other different length also can be set, conduction band machine stops, and completes follow-up guiding spray printing.
B. carry out IMAQ with long-line array CIS camera;
The image sensing cell of long-line array CIS camera is the CIS sensor, form the arrangement mode of long-line array: can be the CIS sensor of the word order of a level that meets length requirement, can be also to be by dislocation up and down the CIS that different length requires that meets that the Z-shaped arrangement mode forms by many short CIS sensors.Can adopt according to embroidered cloth length the long-line array CIS camera of different length.
The triggering mode of CIS camera adopts the external trigger mode, using the code device signal of supporting installation on the conduction band machine electric rotating machine as the external trigger signal, guarantees IMAQ speed and embroidered cloth movement velocity coupling.Code device signal is carried out to 2 frequencys multiplication, 4 frequencys multiplication or other process of frequency multiplication, can improve vertically (direction of motion) resolution ratio of the image that collects, simultaneously also can noise reduction for the interference effect of external trigger signal.
Collected by camera to image at first need to distinguish from color the grid zone at white embroidered cloth place, and the through hole for trying to make a match of embroidered cloth mid-level net trellis, require entire image clear without noise.As Fig. 2, black be through hole, the square region that adjacent four through holes surround is the grid zone of carrying out spray printing.The embroidered cloth color that generally collects the grid zone is grey, and the through hole color is black, the color contrast that can adjust two kinds of zoness of different according to time for exposure and the lighting condition of camera.Secondly, in order accurately to navigate to each the spray printing grid zone on embroidered cloth, need to select suitable image resolution ratio according to spray printing grid area size and hole size, the embroidered cloth of different size can adopt different resolution requirement.The conventional embroidered cloth spray printing grid zone length of side is about 2mm, the through hole length of side is about 1mm, can select the CIS sensor of 300dpi resolution ratio to carry out imaging to embroidered cloth, it is the width of the corresponding 0.085mm of each pixel, a through hole is meaned by 11 * 11 pixels, can meet the requirement of intelligent vision guiding location.The embroidered cloth dimensions is less or higher to the image imaging position accuracy demand, can select more high-resolution as the CIS sensor of 600dpi or 1200dpi.
According to same principle, CIS line-scan digital camera of the present invention, also replaceable for after a plurality of CCD line-scan digital cameras or the imaging of CMOS line-scan digital camera, splicing and obtain final image.
C. gather after image and data are sent to PC carry out the image processing, obtain 1:1 cross-stitch cloth image clearly;
The lateral resolution of the embroidered cloth image collected is by the resolution ratio decision of CIS sensor, and longitudinal frame is determined jointly by collected by camera speed and embroidered cloth movement velocity.Because longitudinal frame can not be just in time consistent with lateral resolution, so there are the situations such as longitudinal stretching or shortening in the original image that step b collects.In order to obtain the picture rich in detail of 1:1, must carry out to image the processing such as distortion correction.The purpose that image is processed is exactly the 1:1 picture rich in detail that the original image that will collect reverts to the actual embroidered cloth physical size of true reflection as far as possible.It is example that the employing 300dpi sensor of take gathers image, lateral resolution is 300dpi, it is the embroidered cloth of the corresponding actual 0.085mm width of width of each pixel, the purpose that image is processed so exactly by each pixel longitudinally the corresponding actual embroidered cloth length of length approach as much as possible 0.085mm, namely allow on image laterally the distance of adjacent two black through holes and the vertical distance of upper adjacent two black through holes approach as much as possible.
Because the spray printing length of cloth is all very long, image processing process it should be noted that the accumulated error that can not have distortion correction, otherwise spray printing is after a period of time, because the effect that the accumulation of error can cause image rectification worse and worse.Because what 300dpi resolution ratio meaned is that 1 inch actual object is applied 300 pixels on image, the corresponding 0.085mm actual object of each pixel width is a myopia value, in computational process, can not all count all figure places of decimal point back, so the corresponding actual range of each pixel has error.In image correction process, can not allow this error continue accumulation, must constantly to this error, compensate, guarantee calibration result.
D. orient the zones of the grid for the pattern spray printing all on the cross-stitch cloth image, reflect the texture variations situation of cross-stitch cloth;
The purpose of location will be known exactly in which which kind of color of position spray printing.At first distinguish the grid zone at the white embroidered cloth place on the image after processing, and the through hole for trying to make a match of embroidered cloth mid-level net trellis, then by each pattern spray printing grid zone two-dimentional sorting position in all grids on whole image, and X, the Y coordinate of grid zone central point identify, and (X means transverse axis, Y means the longitudinal axis) so that subsequent boots ink jet-print head spray printing on the center position identified goes out correct color.
Location it should be noted that the positioning precision problem, and the higher spray printing of positioning precision pattern out is just more accurate, otherwise just easily is biased to adjacent square spray printing zone.Adopt the long-line array CIS camera of 300dpi resolution ratio to carry out IMAQ, adopt rational image to process and location algorithm, can reach the positioning precision of 0.1mm.If adopt more high-resolution long-line array CIS camera, can also realize more high-precision location.
E. the embroidered cloth texture situation of orienting according to vision guide, control ink jet-print head spray printing on position accurately and go out correct pattern;
F. then get back to again step a, until whole cross embroidery pattern printed, thereby obtain the finished product of 100% accurate stamp cross embroidery.
Because the manufacture craft of CIS sensor causes gray scale to unify, the CIS sensor is the capable splicing of Z-shaped by dislocation up and down, needs under a stable condition to carry out that black and white is proofreaied and correct and the Image Mosaics processing.These two schemes belong to SDK and describe category, are not described in detail here.But it is worth mentioning that, black and white is proofreaied and correct and Image Mosaics is not to have no choice but to.For example the present invention, it is required that the gray scale situation of the raw image data collected is enough to meet follow-up processing, therefore do not carry out the black and white correction.Because black and white is proofreaied and correct and Image Mosaics more or less needs consumption of natural resource, the scheme comparatively complicated to some can be brought burden.
In sum, by long-line array CIS camera, embroidered cloth to be printed is scanned, obtain the image that 1:1 clearly reflects actual embroidered cloth texture situation truly, can orient each spray printing grid position, then adjust the spray printing position of digital spray printing head according to the texture distortion situation of embroidered cloth, detect cloth texture and motion distance, advanced line scanning before printing each section pattern, then the distortion situation of print module is mapped on the pattern model and obtains print area, thereby control printer, at assigned address, print accurately the expection pattern.Realize the intelligent vision guiding positioning function of Numerical Control Printer by the machine vision that adds long-line array CIS camera, make jet-printing equipment no longer be subject to the impact of the factors such as the distortion of printing objects material and equipment self mechanical movement error, thereby realize precisely errorless pattern spray printing.
Abovely to provided by the present invention, a kind ofly realize that the embroidered cloth digital spray printing method of intelligent vision guiding carried out detailed introduction, applied specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, to change of the present invention and improvement, will be possible, and can not exceed design and the scope of accessory claim defined, in sum, this description should not be construed as limitation of the present invention.
Claims (6)
1. the embroidered cloth digital spray printing method that can realize intelligent vision guiding, described embroidered cloth is cross embroidery, it is characterized in that: concrete steps are as follows,
A. the rotating speed of regulating conduction band machine coordinates printer, sets the cloth length that goes out in certain period, stops after embroidered cloth to be printed is delivered to the digital spray printing zone;
B. carry out IMAQ with the long-line array CIS camera of external trigger formula;
C. gather after image and data are sent to PC carry out the image processing, obtain 1:1 cross-stitch cloth image clearly;
D. orient the zones of the grid for the pattern spray printing all on the cross-stitch cloth image, reflect the texture variations situation of cross-stitch cloth;
E. the embroidered cloth texture situation of orienting according to vision guide, control ink jet-print head spray printing on position accurately and go out correct pattern;
F. then get back to again step a, until whole cross embroidery pattern printed, thereby obtain the finished product of 100% accurate stamp cross embroidery.
2. a kind of embroidered cloth digital spray printing method that realizes intelligent vision guiding according to claim 1, it is characterized in that: in step b, the image sensing cell of described long-line array CIS camera is the CIS sensor, form the arrangement mode of long-line array, be the CIS sensor of the word order of a level that meets length requirement, or be by dislocation up and down the sensor that different length requires that meets that the Z-shaped arrangement mode forms by many short CIS sensors.
3. a kind of embroidered cloth digital spray printing method that realizes intelligent vision guiding according to claim 2, it is characterized in that: the rate respectively of described CIS sensor is 300dpi, 600dpi or 1200dpi.
4. a kind of embroidered cloth digital spray printing method that realizes intelligent vision guiding according to claim 2, it is characterized in that: the triggering mode of described CIS camera adopts the external trigger mode, using the code device signal of supporting installation on the conduction band machine electric rotating machine as the external trigger signal.
5. a kind of embroidered cloth digital spray printing method that realizes intelligent vision guiding according to claim 4, it is characterized in that: described code device signal carries out process of frequency multiplication.
6. a kind of embroidered cloth digital spray printing method that realizes the intelligent vision guiding of the embroidered cloth image collected according to claim 1, it is characterized in that: in step c, the lateral resolution of the described embroidered cloth image collected is by the resolution ratio decision of CIS sensor, and longitudinal frame is determined jointly by CIS collected by camera speed and embroidered cloth movement velocity.
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| CN104553418A (en) * | 2014-08-07 | 2015-04-29 | 明德绣品（深圳）有限公司 | Digitally-based cloth pattern processing method |
| CN105951327A (en) * | 2016-05-31 | 2016-09-21 | 四川大学 | Sichuan embroidery loading process based on computer aided design and computer-aided manufacturing technology |
| CN107901622A (en) * | 2017-12-01 | 2018-04-13 | 杭州宏华数码科技股份有限公司 | Accurate digital printing method and fabric using digital decorating machine to fabric |
| CN108632534A (en) * | 2018-07-19 | 2018-10-09 | 江苏阿瑞斯智能设备有限公司 | A kind of CIS cameras and the image processing method based on CIS cameras |
| CN108896568A (en) * | 2018-05-21 | 2018-11-27 | 北京沃佳玛科技有限公司 | A kind of information detecting system |
| CN109591472A (en) * | 2019-01-08 | 2019-04-09 | 五邑大学 | A kind of digital ink-jet printed method of warp knit vamp of view-based access control model |
| WO2024184185A1 (en) * | 2023-03-06 | 2024-09-12 | Global Textile Alliance Belgium | Textured fabric printing system and method |
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| CN107901622A (en) * | 2017-12-01 | 2018-04-13 | 杭州宏华数码科技股份有限公司 | Accurate digital printing method and fabric using digital decorating machine to fabric |
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| CN109591472A (en) * | 2019-01-08 | 2019-04-09 | 五邑大学 | A kind of digital ink-jet printed method of warp knit vamp of view-based access control model |
| CN109591472B (en) * | 2019-01-08 | 2020-08-07 | 五邑大学 | Digital ink-jet printing method for warp-knitted vamp based on vision |
| WO2024184185A1 (en) * | 2023-03-06 | 2024-09-12 | Global Textile Alliance Belgium | Textured fabric printing system and method |
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