CN101603818A - Cigarette tipping paper hole line width, hole line-spacing hem width degree measurement mechanism and method - Google Patents
Cigarette tipping paper hole line width, hole line-spacing hem width degree measurement mechanism and method Download PDFInfo
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Abstract
The present invention relates to cigarette tipping paper hole line width, hole line-spacing hem width degree measurement mechanism and method.Cigarette tipping paper hole line width, hole line-spacing hem width degree measurement mechanism include base, and support is arranged on the base, be hung with camera head on the support, also be provided with the slide unit that is slidingly matched with base on the base, be provided with light source in the cavity between slide unit and the base, also be provided with the grating chi on the base; The scale of grating chi is aimed at described glass sheet edge, and described glass sheet both sides are provided with anchor clamps, also is provided with leading screw on the slide unit.The invention has the beneficial effects as follows: solved the hole line width of measuring cigarette tipping paper fast and accurately, apart from the problem of hem width degree; Utilize stepper motor to drive leading screw and move sample platform, solved the edge image collection of tipping paper and the problem that the hole line position is gathered.The present invention is easy and simple to handle, measurement result accurately and reliably, the shortcoming that the efficiency of measurement that has overcome other method is low, personal error is big will played a positive role aspect the mass measurement of cigarette tipping paper and the check.
Description
Technical field
The present invention relates to the Image Information Processing field, especially cigarette tipping paper hole line width, hole line-spacing hem width degree measurement mechanism and method.
Background technology
As everyone knows, harmfulness of smoking health of people mainly is due to wherein the objectionable impurities such as tar, nicotine and carbon monoxide.Effectively reduce the objectionable impurities intake, just can alleviate harm greatly human body.On the one hand, tobacco productive corporation reduces tar content as far as possible in the pipe tobacco production technology.On the other hand, reduce in the smoking process nuisance intake effective way of also can yet be regarded as.There are some researches show, can reduce objectionable impurities such as tar, nicotine, carbon monoxide intake by the air diluting effect, the flue gas dilution technology mainly is to realize by air permeability that improves cigarette paper and filter tip punching dilution.So improving air permeance for cigarette paper arises at the historic moment with pre-perforated tipping paper.
The height of air permeance for cigarette paper directly influences the burning rate that cigarette props up, and then influences the tar emission that cigarette props up.The air permeance for cigarette paper height, the air capacity that provides when then burning is many, and cigarette burning is complete, and burning rate is fast, can reduce the puff number that cigarette props up, thereby reduces the tar intake.Simultaneously, carbon monoxide in the main flume can also spread effusion from the micropore of cigarette paper, also can reduce the carbon monoxide content in the flue gas, and surrounding air also can enter main flume by the micropore of cigarette paper, reduce the concentration of flue gas, thereby reduce the tar content of every mouthful of flue gas.
Punching on tipping paper is the degree of ventilation that reaches cigarette for continuous and effective ground.The development of punching type tipping paper is swift and violent, and particularly the laser boring tipping paper has been played the part of the key player in the burnt engineering of falling of tobacco business.Laser boring is meant that laser beam makes it to gasify by the contact tipping paper and makes the required aperture that ventilates.The aperture that laser boring is got is even, and the setting eyelet shape that every centimetre of punching line number and hole count also can be carried out system is looked the working laser beam mode and different.Eyelet distributes and then can change by regulating laser beam pulses or collision frequency, and eyelet available change laser beam intensity of size or focus are controlled, thereby obtain the desired air permeability requirement of people.According to the air permeability requirement, also can adopt single, double hole, four rounds etc. in the actual production, specifically require to decide by client's hobby and air permeability.
At present, standard YC171 " cigarette tipping paper " need to have stipulated measured hole line width and hole line-spacing hem width degree.Hole line width (width between perforated lines) regulation be a side of tipping paper center line, get breadth extreme between the line of two or more rows hole by laser.Scope according to the regulation hole line width of standard is design load ± 0.3mm.The minimum widith on the line-spacing tipping paper trimming, hole of hole line-spacing hem width degree (width between perforated line and paper edge) tipping paper center line one side.Scope according to the regulation hole line width of standard is design load ± 0.5mm.
According to standard code, the mensuration employing precision of hole line width, hole line-spacing hem width degree is that the instrument of 0.02mm is measured, every part of tipping paper sample keeps at a certain distance away along the center line both sides and respectively width, the hole line-spacing hem width degree of hole line surveyed 10 points, calculate the arithmetic mean of 10 points in both sides respectively, the measurement result difference revision of the convention is to 0.1mm.Every part of tipping paper surveyed 5 points along center line two side holes line, and the net result revision of the convention is to integer.
Implementing and implementing along with what mark, though the principle and the method for the mensuration of the gauge orifice line width of the cigarette of stipulating in national standard usefulness cigarette paper, hole line-spacing hem width degree have a lot of problems in actual use; One, cigarette is difficult to utilize survey instrument directly to measure with cigarette paper material softness, and two, the punching of cigarette paper is small, detecting by an unaided eye is difficult to the center judged, so be difficult to directly mensuration measurement standard hole line width, hole line-spacing hem width degree.
Summary of the invention
The purpose of this invention is to provide a kind of cigarette tipping paper hole line width, hole line-spacing hem width degree measurement mechanism and method, measure the problem of difficulty with cigarette paper to solve cigarette.
In order to achieve the above object, the technical solution adopted in the present invention is:
Cigarette tipping paper hole line width, hole line-spacing hem width degree measurement mechanism, include base, it is characterized in that: on the described base support is arranged, be hung with camera head on the support, described camera head front end is connected with microcobjective, also be provided with the slide unit that is slidingly matched with base on the described base, have through hole in the described slide unit, be provided with light source in the cavity between slide unit and the base, the light that described light source sends passes through hole and arrives the slide unit surface, described microcobjective is aimed at described through hole and is received the light that light source sends, and also is provided with the grating chi on the described base; Through hole end on the described slide unit is covered with glass sheet, and the scale of described grating chi is aimed at described glass sheet edge, and described glass sheet both sides are provided with anchor clamps, also is provided with leading screw on the described slide unit, and described leading screw is by step motor drive, and the drive slide unit slides on base.
Described cigarette tipping paper hole line width, hole line-spacing hem width degree measurement mechanism, it is characterized in that: described base is provided with the parallel guide rail of twice, described slide unit is provided with the chute that cooperates with the base upper rail, and the guide rail of described base inserts in the chute of described slide unit and is slidingly matched with chute.
Described cigarette tipping paper hole line width, hole line-spacing hem width degree measurement mechanism is characterized in that: described camera head adopts DMK21BU04 type high-speed figure Array CCD Camera, and described ccd video camera is connected with the control platform with computing machine by data line.
Described cigarette tipping paper hole line width, hole line-spacing hem width degree measurement mechanism is characterized in that: described stepper motor is connected with the control platform with computing machine by lead.
Cigarette tipping paper hole line width, hole line-spacing hem width degree measuring method is characterized in that: said method comprising the steps of:
(1) tipping paper to be measured is placed on the glass sheet, and with the fixing tipping paper of the anchor clamps on glass sheet both sides, open the power supply of stepper motor, the step motor drive leading screw rotates, leading screw drives slide unit and slides on base, adjust the microcobjective on the ccd video camera simultaneously, make microcobjective on the ccd video camera aim at light source between base and the slide unit, and aim at the motion track of tipping paper on the slide unit; Ccd video camera is gathered the image information of tipping paper, and by data line the image information that collects is delivered in the computing machine, smothing filtering pre-service, the gray scale of in computing machine the image in the current C CD camera coverage being carried out before the image recognition strengthen pre-service and binaryzation pre-service;
(2) after the pre-service, method that adopt to analyze grey scale pixel value in computing machine judges in the image in the ccd video camera visual field whether tipping paper edge or hole line are arranged; Order according to the tipping paper feeding, if the grey scale pixel value in the present image all is 0 or 255, then judging does not have tipping paper edge or hole line to occur in the current C CD camera coverage, if the grey scale pixel value in the present image not all is 0, judge that then tipping paper edge or hole line occur; Under the situation that tipping paper edge or hole line occur, image each side get two row pixels, when the left pixel gray-scale value is 0 or 255, when the right pixel gray-scale value is 255 or 0, then is judged as the tipping paper edge; If when detecting gray-scale value in the present image and be 255 zone, then be judged as tipping paper hole line less than certain area;
(3) judge have tipping paper edge or hole line to occur in the ccd video camera visual field after, in computing machine, the image in the ccd video camera visual field is handled; At first in computing machine, adopt Laplce's Gauss operator method, the zero crossing in the second-order differential detects the tipping paper marginal point in the gradation of image value by seeking, the edge of the gradual formation of gray scale forms a unimodal function through differentiating operator, peak corresponding edge point, unimodal function is carried out differential, and the differential value at peak value place is 0, peak value both sides opposite in sign, and the zero crossing in the corresponding second-order differential of original extreme point can come out the tipping paper edge extracting of needs by detecting zero crossing; Next adopts identical Laplce's Gauss operator method to extract the outward flange pixel of tipping paper hole line, and draws out the edge line of tipping paper hole line in source images by fitting a straight line; Carry out morphology at last and handle, detected tipping paper edge and line edge, hole are further processed by corrosion operation and expansive working;
(4) image in the ccd video camera visual field is handled after, in computing machine, tipping paper edge in the present image coordinate and hole line are accurately located, the method that adopts least square method and Hough conversion to combine is carried out the frontier point match, with discrete frontier point data (X
i, Y
i) be converted into functional relation Y=f (X) best between variable X and the Y, and then definite tipping paper edge and the particular location of hole line in image coordinate, and a dimension coordinate of record tipping paper edge and hole line;
(5) calculate a dimension coordinate of tipping paper both sides of the edge and hole line, obtain the hole line width of tipping paper, hole line-spacing hem width degree.
The cigarette tipping paper hole line width that the present invention relates to, hole line-spacing hem width degree measurement mechanism, comprise anchor clamps, ccd video camera, microcobjective, light source, computing machine, anchor clamps among the present invention, the clamping width of its requirement is greater than the width of cigarette tipping paper, the leading screw rotation that stepper motor drives can make the slide unit move left and right that sample is taken a sample, above slide unit, be provided with anchor clamps, guarantee that the tipping paper placement is smooth vertical, guarantee measuring accuracy.The cigarette tipping paper hole line width that the present invention relates to, hole line-spacing hem width degree measuring method, at first mobile tipping paper sample, gather the tipping paper image simultaneously in real time, obtain the position of tipping paper edge and hole line by Flame Image Process, and the reading of record high precision grating chi is as the coordinate of tipping paper edge and hole line, hole line width, the hole line-spacing hem width degree by calculating cigarette tipping paper at last.The present invention can measure the hole line width of cigarette tipping paper accurately and rapidly, apart from the hem width degree, will be at cigarette tipping paper hole line width, aspect the mensuration of hem width degree, play a positive role.
The invention has the beneficial effects as follows: solved the hole line width of measuring cigarette tipping paper fast and accurately, apart from the problem of hem width degree; Utilize stepper motor to drive leading screw and move sample platform, solved the edge image collection of tipping paper and the problem that the hole line position is gathered.The present invention is easy and simple to handle, measurement result accurately and reliably, the shortcoming that the efficiency of measurement that has overcome other method is low, personal error is big will played a positive role aspect the mass measurement of cigarette tipping paper and the check.
Description of drawings
Fig. 1 is apparatus of the present invention structural representation.
Fig. 2 is the inventive method process flow diagram.
Fig. 3 is the image coordinate in the present invention the measures double hole tipping paper computing machine.
Embodiment
As Fig. 1, cigarette tipping paper hole line width, hole line-spacing hem width degree measurement mechanism, include base 7, support 9 is arranged on the base 7, be hung with camera head 1 on the support 9, camera head 1 front end is connected with microcobjective 2, and camera head 1 adopts DMK21BU04 type high-speed figure Array CCD Camera, and ccd video camera is connected with control platform 12 with computing machine 11 by data line.Also be provided with the slide unit 4 that is slidingly matched with base 7 on the base 7,7 are provided with the parallel guide rail of twice on the base, and slide unit 4 is provided with the chute that cooperates with base 7 upper rails, are slidingly matched with chute in the chute of the guide rail insertion slide unit 4 of base 7.Have through hole in the slide unit 4, be provided with light source 8 in the cavity between slide unit 4 and the base 7, the light that light source 8 sends passes through hole and arrives slide unit 4 surfaces, and microcobjective 2 aligned through holes also receive the light that light source 8 sends, and also are provided with grating chi 10 on the base 7; Through hole end on the slide unit 4 is covered with glass sheet 3, and the scale of grating chi 10 is aimed at glass sheet 3 edges, and glass sheet 3 both sides are provided with anchor clamps, also are provided with leading screw 5 on the slide unit 4, and leading screw 5 is driven by stepper motor 6, and drive slide unit 4 slides on base 7.Stepper motor 6 is connected with control platform 12 with computing machine 11 by lead.
As Fig. 2, cigarette tipping paper hole line width, hole line-spacing hem width degree measuring method may further comprise the steps:
(1) tipping paper to be measured is placed on the glass sheet 3, and with the fixing tipping paper of the anchor clamps on glass sheet 3 both sides, open the power supply of stepper motor 6, stepper motor 6 drives leading screw 5 and rotates, leading screw 5 drives slide unit 4 and slides on base 7, adjust the microcobjective 2 on the ccd video camera simultaneously, make microcobjective 2 on the ccd video camera aim at light source between bases 7 and the slide unit 4, and the motion track of tipping paper on the aligning slide unit 4; Ccd video camera is gathered the image information of tipping paper, and by data line the image information that collects is delivered in the computing machine 11, smothing filtering pre-service, the gray scale of in computing machine 11 image in the current C CD camera coverage being carried out before the image recognition strengthen pre-service and binaryzation pre-service;
(2) after the pre-service, method that adopt to analyze grey scale pixel value in computing machine 11 judges in the image in the ccd video camera visual field whether tipping paper edge or hole line are arranged; Order according to the tipping paper feeding, if the grey scale pixel value in the present image all is 0 (or 255), then judging does not have tipping paper edge or hole line to occur in the current C CD camera coverage, if the grey scale pixel value in the present image not all is 0, judge that then tipping paper edge or hole line occur; Under the situation that tipping paper edge or hole line occur, image each side get two row pixels, when the left pixel gray-scale value is 0 (or 255) right pixel gray-scale value when being 255 (or 0), then be judged as the tipping paper edge; If when detecting gray-scale value in the present image and be 255 zone, then be judged as tipping paper hole line less than certain area;
(3) judge have tipping paper edge or hole line to occur in the ccd video camera visual field after, in computing machine 11, the image in the ccd video camera visual field is handled; At first in computing machine 11, adopt Laplce's Gauss operator method, the zero crossing in the second-order differential detects the tipping paper marginal point in the gradation of image value by seeking, the edge of the gradual formation of gray scale forms a unimodal function through differentiating operator, peak corresponding edge point, unimodal function is carried out differential, and the differential value at peak value place is 0, peak value both sides opposite in sign, and the zero crossing in the corresponding second-order differential of original extreme point can come out the tipping paper edge extracting of needs by detecting zero crossing; Next adopts identical Laplce's Gauss operator method to extract the outward flange pixel of tipping paper hole line, and draws out the edge line of tipping paper hole line in source images by fitting a straight line; Carry out morphology at last and handle, detected tipping paper edge and line edge, hole are further processed by corrosion operation and expansive working;
(4) image in the ccd video camera visual field is handled after, in computing machine 11, tipping paper edge in the present image coordinate and hole line are accurately located, the method that adopts least square method and Hough conversion to combine is carried out the frontier point match, with discrete frontier point data (X
i, Y
i) be converted into functional relation Y=f (X) best between variable X and the Y, and then definite tipping paper edge and the particular location of hole line in image coordinate, and a dimension coordinate of record tipping paper edge and hole line;
(5) calculate a dimension coordinate of tipping paper both sides of the edge and hole line, obtain the hole line width of tipping paper, hole line-spacing hem width degree.
Ccd video camera and microcobjective 2 place directly over the tipping paper sample on the glass sheet 3, because the punching aperture of tipping paper is very little, so adopted 2 pairs of ccd video cameras of microcobjective tipping paper sample within the vision to amplify, image after the amplification is convenient to sampling, analyzes, is handled, and can improve measuring accuracy.Ccd video camera adopts the DMK21BU04 high-speed figure area array CCD of German IMAGINGSOURCE, and resolution is 640 * 480, and sample rate was 60 frame/seconds.Leading screw 5 and stepper motor 6 are used under the control of computer program, and slide unit 4 is moved, and drive sample moving within sweep of the eye at ccd video camera.Light source 8 places the below of slide unit 4, adopts single super bright power LED, and transparent glass sheet 3 is arranged on the slide unit 6, and the light source direct irradiation is on the testing sample that is placed on the glass sheet 3.Grating chi 10 is fixed on slide unit 4 and the base 7, and precision is 1 μ m, is used to write down a dimension coordinate of area ccd video camera visual field central authorities.That computing machine 11 adopts is Lenovo Thinkcentre 9482, employing be Intel Pentium Dual (2.2GHz), 1GB bilateral DDR internal memory, 17 cun LCD.What control platform 12 adopted is that RS232 interface and computing machine 11 carry out communication, mainly comprises step motor control unit, grating chi control module and LED control module.
The software of system of the present invention has mainly used image pretreatment module, tipping paper edge and hole line identification module, image processing module, tipping paper edge and hole line locating module.Ccd video camera is carrying out in the process of continuous acquisition the tipping paper sample in moving, and at first by the image pretreatment module image in forward view is carried out pre-service before the image recognition; By tipping paper edge and hole line identification module, judge whether tipping paper edge or hole line (target of identification) are arranged in the image in the CCD visual field then; If edge or hole line occur, then present image is handled, and realized the accurate location of tipping paper edge or hole line by locating module; By the control hardware platform, mobile tipping paper edge or hole line read the dimension coordinate of the reading of grating chi as tipping paper edge or hole line simultaneously to the intermediate base directrix position in the ccd video camera visual field at last.
As Fig. 3, be example with double hole tipping paper, the tipping paper sample by what from left to right order entered camera coverage successively is: tipping paper left side edge (coordinate X
1), first round line (the coordinate X
2), second round line (the coordinate X
3), the 3rd round line (coordinate X
4), the 4th round line (coordinate X
5) and tipping paper right side edge (coordinate X
6), can obtain the tipping paper parameter that needs as calculated: tipping paper width (L
1=X
6-X
1), tipping paper hole line left side is apart from hem width degree (L
2=X
2-X
1), tipping paper left hole line width (L
3=X
3-X
2), tipping paper right ports line width (L
4=X
5-X
4), line right side, tipping paper hole is apart from hem width degree (L
2=X
6-X
5).
1, image pretreatment module: mainly be the current original image of catching of ccd video camera to be carried out operations such as smothing filtering, gray scale enhancing and binaryzation, improve view data to reach, suppress unwanted or some has the characteristics of image of adverse effect to subsequent treatment.
(1) smothing filtering is the various noises that produce in removal of images collection and the image transfer process, and the present invention adopts improved linear 5 * 5 smooth template, removes the pixel value of the outstanding object (tipping paper edge or hole line) of noise by weighted mean.
(2) to strengthen be some information by in the outstanding piece image of certain needs to gray scale, weakens simultaneously or remove some unwanted information processing method.The present invention adopts nonlinear mapping mode that its grey scale change scope is broadened, and increases the contrast of image, and it is big that the difference between the object background gray scale becomes, so that the processing of successive image.
(3) binaryzation is that the image after strengthening through smothing filtering, gray scale is converted into bianry image, and its key is choosing of threshold value.The present invention adopts two fixed threshold methods, preestablishes two threshold value T
1And T
2, T
1＜T
2, when image is handled, if the pixel value of certain pixel is less than T
1Or greater than T
2, then its gray scale puts 0; If at T
1And T
2Between, then its gray scale puts 255.
2, tipping paper edge and hole line identification module: mainly be whether ccd video camera the tipping paper edge occurred in the forward view or the hole line is judged.The present invention adopts the method for analyzing grey scale pixel value, and according to the order of pattern feeding, if the grey scale pixel value in the present image all is 0 (or 255), then judging does not have object (tipping paper edge or hole line) to occur in forward view; Otherwise, judge that then object occurs.Under the situation that target occurs, image each side get two row pixels, when the left pixel gray-scale value is 0 (or 255) right pixel gray-scale value when being 255 (or 0), then be judged as the tipping paper edge; If when detecting gray-scale value in the present image and be 255 zone, then be judged as tipping paper hole line less than certain area.
3, image processing module: mainly realize the feature extraction of tipping paper edge and hole line, disposal route is as follows:
(1) tipping paper rim detection: the tipping paper edge is split from the paper background by specific method.What the present invention adopted is Laplce Gauss (LOG) Operator Method, and the zero crossing in the second-order differential comes detected edge points in the gradation of image value by seeking.The edge of the gradual formation of gray scale forms a unimodal function through differentiating operator, peak corresponding edge point, unimodal function is carried out differential, the differential value at peak value place is 0, peak value both sides opposite in sign, and the zero crossing in the corresponding second-order differential of original extreme point can come out the edge extracting of needs by detecting zero crossing.
(2) tipping paper hole line detects: extract the outward flange pixel of hole line, draw out the edge line of tipping paper hole line by fitting a straight line in source images.In order to improve the accuracy of rim detection, before fitting a straight line, need a general judgement is done in the calculating by straight slope of the outward flange pixel of these hole lines earlier, determine whether point-blank, to remove the extraordinary image vegetarian refreshments.
(3) morphology is handled: by corrosion (making object be expanded to the nearest pixel field in) and expansion sequence of operations such as (object are dwindled) detected tipping paper edge and line edge, hole are further processed, with the burr in the removal of images, acnode and breakpoint.
4, tipping paper edge and hole line locating module: mainly realize tipping paper edge and the hole line accurate location in the present image coordinate.The method that the present invention adopts least square method and Hough conversion to combine is carried out the frontier point match, with discrete frontier point data (X
i, Y
i) be converted into functional relation Y=f (X) best between variable X and the Y, and then definite tipping paper edge and the particular location of hole line in image coordinate.
Claims (5)
1, cigarette tipping paper hole line width, hole line-spacing hem width degree measurement mechanism, include base, it is characterized in that: on the described base support is arranged, be hung with camera head on the support, described camera head lens front end is connected with microcobjective, and described base is provided with leading screw, and described leading screw is by step motor drive, the slide unit that has base to be slidingly matched, described slide unit cooperates with threads of lead screw; Have through hole in the described slide unit, be provided with light source in the cavity between slide unit and the base, the light that described light source sends passes through hole and arrives the slide unit surface, and described microcobjective is aimed at described through hole and received the light that light source sends, the corresponding grating chi pair that is provided with on described base and the slide unit; Through hole end on the described slide unit is covered with glass sheet, and described glass sheet both sides are provided with anchor clamps.
2, cigarette tipping paper according to claim 1 hole line width, hole line-spacing hem width degree measurement mechanism, it is characterized in that: base is provided with the parallel guide rail of twice, described slide unit is provided with the chute that cooperates with the base upper rail, and the guide rail of described base inserts in the chute of described slide unit and is slidingly matched with chute.
3, cigarette tipping paper according to claim 1 hole line width, hole line-spacing hem width degree measurement mechanism, it is characterized in that: described camera head adopts DMK21BU04 type high-speed figure Array CCD Camera, and described ccd video camera is connected with the control platform with computing machine by data line.
4, cigarette tipping paper according to claim 1 hole line width, hole line-spacing hem width degree measurement mechanism is characterized in that: described stepper motor is connected with the control platform with computing machine by lead.
5, cigarette tipping paper according to claim 1 hole line width, hole line-spacing hem width degree measuring method is characterized in that: said method comprising the steps of:
(1) tipping paper to be measured is placed on the glass sheet, and with the fixing tipping paper of the anchor clamps on glass sheet both sides, open the power supply of stepper motor, the step motor drive leading screw rotates, leading screw drives slide unit and slides on base, adjust the microcobjective on the ccd video camera simultaneously, make microcobjective on the ccd video camera aim at light source between base and the slide unit, and aim at the motion track of tipping paper on the slide unit; Ccd video camera is gathered the image information of tipping paper, and by data line the image information that collects is delivered in the computing machine, smothing filtering pre-service, the gray scale of in computing machine the image in the current C CD camera coverage being carried out before the image recognition strengthen pre-service and binaryzation pre-service;
(2) after the pre-service, method that adopt to analyze grey scale pixel value in computing machine judges in the image in the ccd video camera visual field whether tipping paper edge or hole line are arranged; Order according to the tipping paper feeding, if the grey scale pixel value in the present image all is 0 or 255, then judging does not have tipping paper edge or hole line to occur in the current C CD camera coverage, if the grey scale pixel value in the present image not all is 0, judge that then tipping paper edge or hole line occur; Under the situation that tipping paper edge or hole line occur, image each side get two row pixels, when the left pixel gray-scale value is 0 or 255, when the right pixel gray-scale value is 255 or 0, then is judged as the tipping paper edge; If when detecting gray-scale value in the present image and be 255 zone, then be judged as tipping paper hole line less than certain area;
(3) judge have tipping paper edge or hole line to occur in the ccd video camera visual field after, in computing machine, the image in the ccd video camera visual field is handled; At first in computing machine, adopt Laplce's Gauss operator method, the zero crossing in the second-order differential detects the tipping paper marginal point in the gradation of image value by seeking, the edge of the gradual formation of gray scale forms a unimodal function through differentiating operator, peak corresponding edge point, unimodal function is carried out differential, and the differential value at peak value place is 0, peak value both sides opposite in sign, and the zero crossing in the corresponding second-order differential of original extreme point can come out the tipping paper edge extracting of needs by detecting zero crossing; Next adopts identical Laplce's Gauss operator method to extract the outward flange pixel of tipping paper hole line, and draws out the edge line of tipping paper hole line in source images by fitting a straight line; Carry out morphology at last and handle, detected tipping paper edge and line edge, hole are further processed by corrosion operation and expansive working;
(4) image in the ccd video camera visual field is handled after, in computing machine, tipping paper edge in the present image coordinate and hole line are accurately located, the method that adopts least square method and Hough conversion to combine is carried out the frontier point match, with discrete frontier point data (X
i, Y
i) be converted into functional relation Y=f (X) best between variable X and the Y, and then definite tipping paper edge and the particular location of hole line in image coordinate, and a dimension coordinate of record tipping paper edge and hole line;
(5) calculate a dimension coordinate of tipping paper both sides of the edge and hole line, obtain the hole line width of tipping paper, hole line-spacing hem width degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101441142A CN101603818B (en) | 2009-07-14 | 2009-07-14 | System and method for measuring width between perforated lines and width between perforated line and edge for tipping paper of cigarette |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101441142A CN101603818B (en) | 2009-07-14 | 2009-07-14 | System and method for measuring width between perforated lines and width between perforated line and edge for tipping paper of cigarette |
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| Publication Number | Publication Date |
|---|---|
| CN101603818A true CN101603818A (en) | 2009-12-16 |
| CN101603818B CN101603818B (en) | 2011-02-02 |
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|---|---|---|---|
| CN2009101441142A Expired - Fee Related CN101603818B (en) | 2009-07-14 | 2009-07-14 | System and method for measuring width between perforated lines and width between perforated line and edge for tipping paper of cigarette |
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| CN102589453A (en) * | 2011-12-16 | 2012-07-18 | 中国计量学院 | External diameter images measuring device for axial work pieces and measuring method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3536374A1 (en) * | 1985-10-11 | 1987-04-16 | Siemens Ag | Transmitted-light method for measuring housings and components |
| GB8816283D0 (en) * | 1988-07-08 | 1988-08-10 | Leicester Polytechnic | Measurement method & apparatus |
| CN100340891C (en) * | 2003-06-05 | 2007-10-03 | 北京普利生仪器有限公司 | Automatic optical microscope |
| CN1243270C (en) * | 2003-10-14 | 2006-02-22 | 南开大学 | Microscope automatic operation system |
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