CN203643314U - Runner-type pulp fiber measurement system capable of calibrating measurement resolution on line - Google Patents
Runner-type pulp fiber measurement system capable of calibrating measurement resolution on line Download PDFInfo
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- CN203643314U CN203643314U CN201320553274.4U CN201320553274U CN203643314U CN 203643314 U CN203643314 U CN 203643314U CN 201320553274 U CN201320553274 U CN 201320553274U CN 203643314 U CN203643314 U CN 203643314U
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Abstract
The utility model relates to a runner-type fiber measurement system capable of calibrating measurement resolution on line. The measurement system is characterized by comprising an LED (light emitting diode) light source, a fiber runner, a smart camera, motors, a clear water tank and a fiber sample liquid cup, wherein the fiber runner is a cuboid-shaped hollow channel which is vertically placed; the LED light source and the smart camera are positioned on two sides of the fiber runner; the smart camera is connected with a computer; three pipelines are connected to the lower part of the fiber runner; a sample pipeline in the middle is connected with the fiber sample liquid cup for accommodating a fiber sample, and the other two clear water pipelines on the left and right sides are connected with the same clear water tank through a motor (B); the upper end of the fiber runner is connected with a drainage tank through the other motor (A). The measurement device is capable of quickly and accurately calibrating the measurement resolution on line; by virtue of the runner measurement system, the defect of static pulp fiber measurement is overcome, a great quantity of data can be counted in real time, and thus the aim of accurate measurement is achieved.
Description
Technical field
The method and the system thereof that the present invention relates to a kind of flow channel type fiber measurement system on-line proving Measurement Resolution, belong to fiber measurement technical field.
Background technology
When paper pulp fiber is carried out to detection and Identification, due to the difference of resolution of lens size, easily cause calculation deviation, therefore, first must demarcate it.And the accuracy of demarcating is the statistics of three directions.One of traditional calibration algorithm is by the distance of camera and imaging surface, see enlargement factor, calculate single resolution, but by experiment, research and analysis to existing algorithm, find that the method can not obtain accurate, multidirectional resolution, because the image gathering is rectangle, existing algorithm can not calculate laterally simultaneously, situation longitudinally with to angular direction (45 degree and 135 are spent directions), accuracy is inadequate, needs to improve.Another kind of existing algorithm is to carry out static resolution of carrying out measuring system with object of reference to demarcate, and according to pinhole imaging system model, in image, any one pixel is as follows with the relation of camera coordinates system in image physical coordinates system: U=S
xx
u+ U
0; V=S
yy
u+ V
0.(U, V) is the real image coordinate of any point P in computing machine coordinate system, and unit is pixel count, S
x,s
yfor the pixel count of plane of delineation unit distance, (U
0, V
0) be the intersection point of camera optical axis and the plane of delineation, be called main shaft coordinate.(X
u,y
u) be the physical image coordinate under desirable pinhole imaging system model, unit is millimeter.S
x,s
ybe us required; This is for dynamic parameter measurement system, and target is fiber mobile in runner pond, is difficult to use the object of reference same with actual measurement environmental facies to carry out the Measurement Resolution of static calibration system.So there is larger error in existing method resolution in the time of accurate, kinetic measurement fiber parameter, and exists certain difficulty.
Summary of the invention
Object of the present invention is exactly the problem that solves demarcation fibre morphology measuring system that at present can not be accurate, online, provides a kind of under light source, method and the measuring system of the Measurement Resolution of flow channel type fiber measurement system on-line proving fast and accurately.
For achieving the above object, the present invention has adopted following technical scheme:
A kind of method of flow channel type fiber measurement system on-line proving Measurement Resolution, it is the length number of pixels laterally, longitudinally, to angular direction (45 degree and 135 degree directions) by 5000 standard fibers of online real-time statistics (length is known), and ask arithmetic mean to realize, its concrete steps are
(1) gather image, utilize the image of automatic image measurement system acquisition standard fibers to computing machine, graphics standard is 640*480 monochrome bitmap;
(2) image cut apart, skeletonizing, by the method for threshold value, present image is carried out to binaryzation, make background become white, fiber and noise become black; Image after binaryzation is removed to the excessive or too small region that affects accurate calibration; Carry out closed operation, make fiber edge smoothing; Carry out Skeleton and extract skeleton, make target become single pixel wide; Remove and be with paniculate target; Remove long or too short fiber target;
(3) calculate every fiber chain code, judge that according to the feature of chain code fiber is approximate horizontal, longitudinal or 45 degree and 135 degree directions;
(4) statistics transverse fiber radical, computational length number of pixels, asks its arithmetic mean.
(5) statistics longitudinal fiber radical, computational length number of pixels, asks its arithmetic mean.
(6) number of fiber of statistics to angular direction (45 degree and 135 degree directions), computational length number of pixels, asks its arithmetic mean.
(7) if connecting fiber is other directions, or curved fiber, it is not measured.
In described step (3), while calculating each machine direction, first use the skeleton of every fiber of chain representation, the feature of recycling chain code judge fiber be approximate laterally, longitudinally or to angular direction.
In described step (4), add up 5000 transverse fiber images, calculate average length number of pixels, pixel count, divided by fibre fixed-length, just obtains resolution; In like manner, the resolution to angular direction (45 degree and 135 degree directions) is tried to achieve in step (5), (6).
A kind of measuring system of flow channel type paper pulp fiber measuring system on-line proving Measurement Resolution, it is characterized in that: comprise LED light source, fiber runner, smart camera, motor, clear water tank and fiber samples liquid cup, described fiber runner is the vertical rectangular parallelepiped hollow channel of placing, LED light source and smart camera separation fiber runner both sides, described smart camera connects computing machine, fiber runner below connects three pipelines, the sample pipe in centre position connects the fiber samples liquid cup that holds fiber samples, the fresh water pipeline of position, the left and right sides connects same clear water tank by motor B, described fiber runner upper end is crossed another motor A and is connected rhone.
The invention has the beneficial effects as follows: the invention solves in the time measuring fiber parameter because demarcate the inaccurate problem of inaccurate initiation measurement parameter, under a large amount of statisticss, the method can successfully realize the demarcation of the Measurement Resolution of fiber measurement system, obtains the resolution of measuring system.By pre-service, obtain removing single pixel fiber of little bifurcated, be divided by and obtain the object of resolution to reach the number of pixels of computational length and physical length, and adopt a large amount of measurement to ask arithmetic mean value method, improve the accuracy of demarcating.The result of the flow channel type fiber measurement on-line proving fiber of realizing by VC++ and mass data have shown accuracy and the robustness of this method.
Brief description of the drawings
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Accompanying drawing 1 is process chart of the present invention;
The image that accompanying drawing 2 is the fibre image transverse fiber collecting of the present invention;
The image of the result that accompanying drawing 3 is binarization segmentation of the present invention;
Accompanying drawing 4 is the image in the excessive or too small region of removal of the present invention;
The image result that accompanying drawing 5 is morphological dilations of the present invention;
Accompanying drawing 6 is skeletonizing of the present invention, the image result of removing branch;
The transverse fiber image that accompanying drawing 7 extracts for the present invention;
The longitudinal fiber image that accompanying drawing 8 extracts for the present invention;
The fibre image to angular direction (45 degree and 135 degree directions) that accompanying drawing 9 extracts for the present invention;
Accompanying drawing 10 is measuring system structural representation of the present invention.
In figure, 1 LED light source, 2 fiber runners, 3 polaroids (CPL), 4 smart cameras, 5 computing machines, 6 motor A, 7 motor B, 8 rhones, 9 clear water tanks, 10 fiber samples liquid cups, 11 fresh water pipelines, 12 sample pipes.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention will be further described.
A method for flow channel type fiber measurement system on-line proving Measurement Resolution, the steps include:
(1) gather fibre image.Utilize the image of auto Image Collection equipment collection paper pulp fiber to computing machine, graphics standard is monochrome bitmap.Every collection piece image just carries out following processing and deposits the data that measure in database it, simultaneously computation and measurement result.
(2) image cut apart, skeletonizing.Comprise: binaryzation, remove excessive or too small region, closed operation, Skeleton etc. and obtain the wide target of single pixel.Because Skeleton causes the shortening of the length of fiber, through statistics in a large number, shorten at two ends is respectively 2 pixels, so in the process of calculating, the number of pixels of length is corresponding adds 4.
(3) mark is carried out in the target area after skeletonizing, calculate the chain code of each target, approximate horizontal, longitudinal still to angular direction (45 degree and 135 degree directions) while judging fiber according to the feature of chain code;
(4) statistics transverse fiber radical N
h, length number of pixels
p hi and cumulative sum
p h , ask arithmetic mean to obtain
r h :
(5) statistics longitudinal fiber radical N
v, fibre length number of pixels
p vi and cumulative sum
p v , ask arithmetic mean
r v :
(6) number of fiber of statistics to angular direction (45 degree and 135 degree directions)
n d , fibre length number of pixels
p di and cumulative sum
p d , ask arithmetic mean
r d :
(7) if connecting fiber is other directions or curved fiber (not meeting the condition of direction in (3), (4), (5)), it is not measured to statistics.
Abundant experimental results shows, the method can, not changing under the prerequisite of fibre morphology, be carried out online dynamic calibration to the resolution of fiber parameter measurement system accurately, obtains the horizontal resolution R of parameter measurement
h, vertical resolution R
vwith to angular resolution R
d.
The present invention is directed to the method for above-mentioned flow channel type paper pulp fiber measuring system on-line proving Measurement Resolution, design system, system comprises LED light source 1, fiber runner 2, polaroid (CPL) 3, smart camera 4, motor 6, 7, Rinsing Area 9, sample beaker 10 and coupling etc., described fiber runner 2 is the rectangular parallelepiped hollow channel of vertically placing, LED light source 1 and smart camera 4 are placed on respectively fiber runner 2 both sides, described smart camera 4 connects computing machine 5, fiber runner 2 belows connect three pipelines, the sample pipe 12 in centre position connects the fiber samples liquid cup 10 that holds fiber samples, the fresh water pipeline 11 of position, the left and right sides connects same clear water tank 9 by motor 7, described fiber runner 2 upper ends connect rhone 8 by connecting motor 6.Open switch, motor 7 extracts clear water, and another motor 6 extracts fiber samples and clear water mixed liquor.Due to flow velocity difference, extract mixed liquor motor 6 speed fast, in runner, divide three layers, middle one deck is fiber samples, left and right skin is clear water.Clear water can prevent that fiber from sticking on flow path wall, impacts imaging.Camera can gather mobile paper pulp fiber image.The system that this runner is measured, has improved the deficiency of paper pulp fiber static measurement, and statistics that can be real-time, a large amount of reaches the object of Measurement accuracy.
Claims (1)
1. the measuring system of a flow channel type paper pulp fiber measuring system on-line proving Measurement Resolution, it is characterized in that: comprise LED light source (1), fiber runner (2), polaroid CPL(3), smart camera (4), motor (6, 7), clear water tank (9) and fiber samples liquid cup (10), described fiber runner (2) is the rectangular parallelepiped hollow channel of vertically placing, LED light source (1) and smart camera (4) are placed respectively fiber runner (2) both sides, described smart camera (4) connects computing machine (5), fiber runner (2) below connects three pipelines, the sample pipe (12) in centre position connects the fiber samples liquid cup (10) that holds fiber samples, the fresh water pipeline (11) of position, the left and right sides is by motor B(7) connect same clear water tank (9), described fiber runner (2) upper end is by motor A(6) connection rhone (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320553274.4U CN203643314U (en) | 2013-09-07 | 2013-09-07 | Runner-type pulp fiber measurement system capable of calibrating measurement resolution on line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320553274.4U CN203643314U (en) | 2013-09-07 | 2013-09-07 | Runner-type pulp fiber measurement system capable of calibrating measurement resolution on line |
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|---|---|
| CN203643314U true CN203643314U (en) | 2014-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320553274.4U Expired - Fee Related CN203643314U (en) | 2013-09-07 | 2013-09-07 | Runner-type pulp fiber measurement system capable of calibrating measurement resolution on line |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103454216A (en) * | 2013-09-07 | 2013-12-18 | 齐鲁工业大学 | Method and system for calibrating measurement resolution of runner-type pulp fiber measuring system on line |
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2013
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103454216A (en) * | 2013-09-07 | 2013-12-18 | 齐鲁工业大学 | Method and system for calibrating measurement resolution of runner-type pulp fiber measuring system on line |
| CN103454216B (en) * | 2013-09-07 | 2015-06-17 | 齐鲁工业大学 | Method and system for calibrating measurement resolution of runner-type pulp fiber measuring system on line |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140611 Termination date: 20150907 |
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| EXPY | Termination of patent right or utility model |