CN104309866B - Cigarette automatic positioning method in a kind of cigarette-packaging machine diaphragm capsule - Google Patents
Cigarette automatic positioning method in a kind of cigarette-packaging machine diaphragm capsule Download PDFInfo
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- CN104309866B CN104309866B CN201410548673.0A CN201410548673A CN104309866B CN 104309866 B CN104309866 B CN 104309866B CN 201410548673 A CN201410548673 A CN 201410548673A CN 104309866 B CN104309866 B CN 104309866B
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- cigarette
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B19/00—Packaging rod-shaped or tubular articles susceptible to damage by abrasion or pressure, e.g. cigarettes, cigars, macaroni, spaghetti, drinking straws or welding electrodes
- B65B19/28—Control devices for cigarette or cigar packaging machines
Abstract
The invention discloses a kind of cigarette automatic positioning method for cigarette short detection process, is accurately positioned to the cigarette in cigarette-packaging machine diaphragm capsule, determines the detection zone of each cigarette, so as to ensure the accuracy of follow-up cigarette short detection.The method makes full use of pipe tobacco and the obvious feature of obbbin color contrast, employs orientation projection method and the small differences of local take statistics to form obvious characteristic by certain direction.Interference in drop shadow curve is removed by special filtering process, traversal is searched the particular location of each crest, finally determines each cigarette corresponding region, realize being automatically positioned for cigarette.
Description
Technical field
The present invention relates to cigarette localization method field, the cigarette side of being automatically positioned in specifically a kind of cigarette-packaging machine diaphragm capsule
Method.
Background technology
During cigarette processes, in order to ensure the cigarette quality of final cigarette bag, need cigarette is installed on baling line
Void-end detection device is propped up, for detecting that cigarette is with the presence or absence of defects such as bears in diaphragm capsule.With not being broken into for machine vision technique
It is ripe, increasingly it is widely applied based on the cigarette short detection mode of machine vision technique.
In the cigarette short detection means based on machine vision technique, needs are detected respectively to each cigarette, and are examined
The first step of survey is just to determine the detection zone of each cigarette in diaphragm capsule, i.e., the corresponding interest region of each cigarette.Conventional at present
Method is the detection zone for manually determining each cigarette, i.e. the detection zone preset parameter of previously given each cigarette before detection.But
It is, in actual detection, to be affected by factors such as machine vibrations, the position of each cigarette can not possibly unalterable, cigarette or many
Or I haven't seen you for ages, and presence offsets, fixed detection zone can not meet needs.Additionally, the cigarette in diaphragm capsule has different arrangement modes,
Main flow has 776 and 767 two kind of cigarette arrangement mode at present, if cigarette arrangement mode changes, then be accomplished by resetting
Each cigarette detection zone, it is comparatively laborious.Therefore it is badly in need of a kind of intelligent, automatic cigarette localization method, accurately determines each cigarette
Detection zone.
The content of the invention
It is an object of the invention to provide cigarette automatic positioning method in a kind of cigarette-packaging machine diaphragm capsule, to solve prior art
The problem of presence, it is ensured that the accuracy of each cigarette detection zone in cigarette short detection process.
In order to achieve the above object, the technical solution adopted in the present invention is：
Cigarette automatic positioning method in a kind of cigarette-packaging machine diaphragm capsule, it is characterised in that：First imageing sensor is gathered
Cigarette pipe tobacco end view drawing picture to be checked carry out gray processing process, level is carried out as projection properties using image pixel gray value then
Projection, obtains floor projection curve, and in floor projection curve, often the projection value of smoke evacuation boundary can relative other areas of surrounding
Domain is larger, forms crest, carries out special filtering process to floor projection curve, obtain several section independences corresponding with cigarette row
Waveform, searches the particular location for determining each section of waveform medium wave peak, carries out segmentation to gray level image according to crest location and be obtained often
The corresponding image of smoke evacuation；
In the same manner, the often row cigarette image using image pixel gray value as projection properties respectively to being partitioned into carries out Vertical Square
To projection, obtain upright projection curve, in upright projection curve, the projection value of every cigarette boundary can relative surrounding other
Region is larger, forms crest, carries out special filtering process to upright projection curve, obtain several section independences corresponding with cigarette number
Waveform, searches the particular location for determining each section of waveform medium wave peak, and carrying out segmentation to gray level image according to crest location can be somebody's turn to do
The each cigarette included in smoke evacuation, the final accurate location for determining each cigarette in diaphragm capsule.
The invention has the beneficial effects as follows：
The utilization level of present invention innovation, vertical projection method and special filtering process are splitting each cigarette in cigarette bag diaphragm capsule
, reach cigarette it is quick, be accurately automatically positioned, so as to ensure the accuracy of each cigarette detection zone setting, largely
Improve the degree of accuracy of later stage cigarette short detection.The method is also extended to simultaneously in similar target positioning, with extensive
Application space.
Description of the drawings
Fig. 1 is 767 arrangement cigarette pipe tobacco end face original images in the specific embodiment of the invention.
Fig. 2 is the cigarette pipe tobacco end view drawing picture after gray processing process in the specific embodiment of the invention.
Fig. 3 is to gray level image floor projection and to carry out the result figure of filtering process in the specific embodiment of the invention, its
In：
Fig. 3 a are that floor projection filters pre-treatment effect figure；Fig. 3 b are floor projection filtering post processing design sketch.
Fig. 4 arranges the result figure split to press to cigarette according to floor projection result in the specific embodiment of the invention.
Fig. 5 be in the specific embodiment of the invention to most down smoke-discharging image upright projection and the result figure that is filtered,
Wherein：
Fig. 5 a are that upright projection filters pre-treatment effect figure；Fig. 5 b are upright projection filtering post processing design sketch.
Fig. 6 is the result figure in the specific embodiment of the invention according to upright projection result to most down smoke-discharging segmentation.
Fig. 7 is the final segmentation result figure of all cigarettes in the specific embodiment of the invention.
Specific embodiment
Cigarette automatic positioning method in a kind of cigarette-packaging machine diaphragm capsule, first the cigarette cigarette to be checked to imageing sensor collection
Silk end view drawing picture carries out gray processing process, then carries out floor projection as projection properties using image pixel gray value, obtains water
Flat drop shadow curve, in floor projection curve, often relative other regions of surrounding of projection value meeting of smoke evacuation boundary are larger, formed
Crest, carries out special filtering process to floor projection curve, obtains several section independent waveforms corresponding with cigarette row, searches true
The particular location of fixed each section of waveform medium wave peak, segmentation is carried out to gray level image according to crest location, and that every smoke evacuation is obtained is corresponding
Image；
In the same manner, the often row cigarette image using image pixel gray value as projection properties respectively to being partitioned into carries out Vertical Square
To projection, obtain upright projection curve, in upright projection curve, the projection value of every cigarette boundary can relative surrounding other
Region is larger, forms crest, carries out special filtering process to upright projection curve, obtain several section independences corresponding with cigarette number
Waveform, searches the particular location for determining each section of waveform medium wave peak, and carrying out segmentation to gray level image according to crest location can be somebody's turn to do
The each cigarette included in smoke evacuation, the final accurate location for determining each cigarette in diaphragm capsule.
Fig. 1 is 767 arrangement cigarette pipe tobacco end face original images of imageing sensor collection.It can be seen that cigarette
The three rows arrangement in closely rule in the diaphragm capsule, substantially (pipe tobacco is brown, obbbin table for pipe tobacco and the contrast of cigarette obbbin surface color
Face is white).In the boundary of each cigarette, can all there is the obbbin of sub-fraction white in the region.The present invention realizes cigarette certainly
The detailed process of dynamic positioning is as follows：
1st, gray processing process is carried out to cigarette pipe tobacco end view drawing picture, the image after process is as shown in Figure 2.
2nd, the projection of horizontal direction, computing formula are carried out with the gray value of pixel in gray level image as projection properties to image
It is as follows：
Wherein A [i] is drop shadow curve, gray values of the S (i, j) for the pixel on the i-th row, jth row coordinate on gray level image.
Drop shadow curve can clearly find out that drop shadow curve presents four crest shapes, and each crest as shown in Figure 3 a, from figure
Correspond to the boundary of every smoke evacuation.As long as every smoke evacuation is partitioned into by the position for determining these crests.
3rd, special filtering process is carried out to drop shadow curve, in order to search for and determine the particular location of each crest.Fig. 3 b
It is that the result after processing is filtered to drop shadow curve, it can be seen that curve only remains four independent smooth waveforms.It is concrete to process
Method is：The smothing filtering with COEFFICIENT K is carried out to drop shadow curve A [i], each data in drop shadow curve is traveled through, for index
Number for n data, its smooth value computing formula is as follows：
Wherein Length is drop shadow curve's data amount check, using the smooth value calculating method of above-mentioned formula, to drop shadow curve A
[i] carry out respectively slightly with severe smothing filtering, obtain slight filter curve B1 [i] and severe filter curve B2 [i].Wherein,
The COEFFICIENT K value of slight filtering is less, and typically between 3～10, the COEFFICIENT K value of severe smothing filtering is larger, and 20～50 are not
Deng occurrence can be set according to actual conditions.Slight smooth effect is that drop shadow curve is slightly filtered, its result and source
Curve is more or less the same.The smooth effect of severe is averaged in local, drop shadow curve's local elongation can be obtained shallower.Finally will
B1 [i] and B2 [i] subtracts each other and obtains curve C [i] to negative value clearing, includes four independent smooth waveforms, such as scheme in the curve
Shown in 3b.
4th, in the drop shadow curve after special filtering process, determine the particular location of each crest.Method is as follows：
A) curve C [i] is traveled through, obtains its maximum C_Max, the value is highest crest value on curve, record maximum
Corresponding call numbers C_index of C_Max
B) determine starting and the final position of C_Max correspondence waveforms, increase toward call number by initial position of C_index respectively
Greatly with the direction traversal for reducing, both of which terminates when condition C [i]=0 is met, and record meets the corresponding ropes of C [i]=0 respectively
Quotation marks C_End and C_Start, respectively terminate and original position.
C) operation is zeroed out to the corresponding waveforms of C_Max.I.e.：
C [i]=0, i ∈ [C_Start, C_End]
After above-mentioned steps, the accurate location of upper first crest of curve C [i] is obtained, and the crest is corresponded to into ripple
Shape is removed from curve C [i].A)-c above-mentioned to C [i] repetitions) step, you can obtain the accurate position of second crest on curve
Put.The like, so that it may obtain the position of upper four crests of curve C [i], i.e. corresponding call number C_index of each crest.Root
It is divided into the result of three rows as shown in Figure 4 cigarette according to each crest location.
5th, the often row cigarette image using image pixel gray value as projection properties respectively to being partitioned into carries out vertical direction
Projection, Fig. 5 a are most down smoke-discharging corresponding upright projection curve.In upright projection curve, the projection of every cigarette boundary
Relative other regions of surrounding of value meeting are larger, form crest.
6th, with the 3rd step and the 4th step, special filtering process is carried out to the result of upright projection, is obtained comprising eight independences
The new curve of smooth waveform, as shown in Figure 5 b.It is then determined that the particular location of each crest, according to each crest location to gray scale
Image carries out segmentation and can obtain the corresponding image of each cigarette in the row, as shown in Figure 6.
7th, above-mentioned steps are completed, you can determine the corresponding region of each cigarette, realizes being automatically positioned for cigarette, it is final to imitate
Fruit is as shown in Figure 7.
Claims (1)
1. cigarette automatic positioning method in a kind of cigarette-packaging machine diaphragm capsule, it is characterised in that：First to imageing sensor collection
Cigarette pipe tobacco end view drawing picture to be checked carries out gray processing process, then carries out level throwing as projection properties using image pixel gray value
Shadow, obtains floor projection curve, and in floor projection curve, often the projection value of smoke evacuation boundary can relative other regions of surrounding
It is larger, crest is formed, the disposal of gentle filter for slightly being combined with severe is carried out to floor projection curve, is obtained and cigarette row phase
Corresponding several sections of independent waveforms, search the particular location for determining each section of waveform medium wave peak, gray level image are entered according to crest location
Row segmentation is obtained the corresponding image of every smoke evacuation；
In the same manner, the cigarette image of often arranging using image pixel gray value as projection properties respectively to being partitioned into carries out vertical direction
Projection, obtains upright projection curve, and in upright projection curve, the projection value of every cigarette boundary can relative other regions of surrounding
It is larger, crest is formed, the disposal of gentle filter for slightly being combined with severe is carried out to upright projection curve, is obtained relative with cigarette number
Several sections of independent waveforms answered, search the particular location for determining each section of waveform medium wave peak, gray level image are carried out according to crest location
Each cigarette that segmentation is included in can obtaining the smoke evacuation, the final accurate location for determining each cigarette in diaphragm capsule.
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| CN201410548673.0A CN104309866B (en) | 2014-10-16 | 2014-10-16 | Cigarette automatic positioning method in a kind of cigarette-packaging machine diaphragm capsule |
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| CN201410548673.0A CN104309866B (en) | 2014-10-16 | 2014-10-16 | Cigarette automatic positioning method in a kind of cigarette-packaging machine diaphragm capsule |
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| CN104309866B true CN104309866B (en) | 2017-03-29 |
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| CN105181722B (en) * | 2015-10-20 | 2018-11-16 | 无锡日联科技股份有限公司 | A kind of tobacco defect inspection method based on X-Ray image |
| CN115049713B (en) * | 2022-08-11 | 2022-11-25 | 武汉中导光电设备有限公司 | Image registration method, device, equipment and readable storage medium |
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| JP4108220B2 (en) * | 1999-04-07 | 2008-06-25 | 株式会社イシダ | Packaging inspection system |
| JP2010058829A (en) * | 2008-09-05 | 2010-03-18 | Dainippon Printing Co Ltd | Horizontal pillow packaging machine equipped with bite prevention function |
| CN202919021U (en) * | 2012-09-20 | 2013-05-08 | 南京金梁科技有限公司 | Laser-type online circumference detection control device |
| CN102967278B (en) * | 2012-12-11 | 2015-05-20 | 浙江中烟工业有限责任公司 | Cigarette stain area measurement device and method as well as data acquisition device |
| CN103217110B (en) * | 2013-04-09 | 2017-02-15 | 深圳市鸿捷源自动化系统有限公司 | Off-line cigarette or filter stick detection device based on three-dimensional visual technology |
| CN103385539B (en) * | 2013-08-02 | 2015-04-15 | 南京文采科技有限责任公司 | Single cigarette empty head detection method based on machine vision and special equipment |
| CN103529164B (en) * | 2013-11-02 | 2015-04-22 | 中国烟草总公司郑州烟草研究院 | Automatic cigarette marking device for cigarette ignition tendency testing |
| CN103557807B (en) * | 2013-11-08 | 2016-01-06 | 湖南中烟工业有限责任公司 | The method of cigarette filter rod end surface shape quality testing and device thereof |
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