CN110174063A - A kind of neutral pen ink height detecting system and detection method based on machine vision - Google Patents
A kind of neutral pen ink height detecting system and detection method based on machine vision Download PDFInfo
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- CN110174063A CN110174063A CN201910501446.5A CN201910501446A CN110174063A CN 110174063 A CN110174063 A CN 110174063A CN 201910501446 A CN201910501446 A CN 201910501446A CN 110174063 A CN110174063 A CN 110174063A
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- G—PHYSICS
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- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
- G01B11/0608—Height gauges
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- G06V10/44—Local feature extraction by analysis of parts of the pattern, e.g. by detecting edges, contours, loops, corners, strokes or intersections; Connectivity analysis, e.g. of connected components
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Abstract
The invention discloses a kind of, and the neutral pen ink height detecting system based on machine vision includes oil pipe delivery module, detecting module, image capture module, image analysis module and ink screening module.The oil pipe delivery module is used for carrying gel ink pen to be detected；Whether the detecting module is used to detect the gel ink pen to be detected of oil pipe delivery module carrying by predetermined position；For calculating the pixel value for acquiring neutral pen ink height to be detected, image capture module starts to acquire the image of neutral pen ink to be detected after receiving standby signal described image acquisition module；Described image analysis module is used to calculate the pixel value of neutral pen ink height to be detected according to the image that image capture module acquires, and judges whether the height of neutral pen ink to be detected is qualified；The board pen ink screening module, which is used to filter out the qualified gel ink pen of detection and rejects, detects underproof gel ink pen；The detection method, system and detection method improve the accuracy and efficiency of gel ink pen package detection.
Description
Technical field
The present invention relates to Digital Image Processing and mode identification technologies more particularly to a kind of based on machine vision
Neutral pen ink height detecting system and detection method.
Background technique
Gel ink pen (Roller ball pens) or Neutral writing ink ball pen are that one kind of prevalence in the world at present is new
The writing implement of grain husk.Different types of gel ink pen can be divided into again by written type, ink color, structure etc..Gel ink pen has both certainly
Comfortable feel is write by the advantages of coming water-color paintbrush and oiliness ball pen, and ink viscosity is lower, and increases the substance for being easy lubrication, writes
The viscosity of medium between aqueous between oiliness, thus it is more smooth than common oiliness ball pen, be the upgrading of oiliness ball pen
Regeneration product.
In gel ink pen production, import ink is that wherein whether one of necessary process, neutral pen ink height are qualified directly
It is related to the consumption that gel ink pen makes subsequent process progress and cost.Neutral pen ink imports first of work of generally production
Sequence.And if imported, ink is inaccurate, and it is irregular often to will appear gel ink pen level of ink in subsequent production, causes to be produced into
This excessively high and technique unsightly, to influence to sell, therefore must carry out height inspection to ink first before gel ink pen use
It surveys, to filter out defective products.
Currently, generally using a variety of instruments, device and method in the production process that neutral pen ink imports, such as incuding
Device or laser scanner etc., or neutral pen ink height is detected by way of artificial detection, to filter out not
Non-defective unit.But the mode heavy workload of artificial screening, working efficiency are low and accuracy is low, and detection speed is difficult to reach production requirement.
Moreover, existing detection mode is there is also judging that criterion of acceptability is fuzzy, as caused by observation angle, clarity and enlargement ratio
The problem of detecting low accuracy caused by inaccuracy and artificial uncontrollable factor and low efficiency.
The present invention be exactly in order to solve problem above and carry out improvement.
Summary of the invention
The object of the present invention is to provide a kind of neutral pen ink height detecting system and detection method based on machine vision,
To overcome above-mentioned technical problem.
The present invention is that technical solution used by solving its technical problem is:
A kind of neutral pen ink height detecting system based on machine vision
Oil pipe delivery module, the oil pipe delivery module are used for carrying gel ink pen to be detected.
Detecting module, the detecting module are used to detect the gel ink pen to be detected of oil pipe delivery module carrying by pre-determined bit
When setting, standby signal is issued.
Image capture module, image of the described image acquisition module for acquisition calculate neutral pen ink height to be detected
Pixel value, image capture module start to acquire the image of neutral pen ink to be detected after receiving standby signal.
Image analysis module, the image that described image analysis module is used to be acquired according to image capture module calculate to be detected
The pixel value of neutral pen ink height, and judge whether the height of neutral pen ink to be detected is qualified.
Ink screening module, the board pen ink screening module are used to filter out the qualified gel ink pen of detection and reject detection
Underproof gel ink pen.
Further, the detecting module includes several photoelectric sensors for being installed in designated position, the photoelectric sensing
Device is used for when oil pipe delivery module carrying gel ink pen to be detected is by designated position, issues standby signal.
Further, described image acquisition module includes image pick-up card, industrial camera and light source；Described image acquisition
Block the standby signal for receiving detecting module sending, and records the coding that encoder is currently generated after receiving the standby signal
Value；The industrial camera after the standby signal that image pick-up card receives detecting module for acquiring neutral pen ink to be detected
Image；The light source is used for gel ink pen by polishing when predetermined position.
Further, described image analysis module includes image processing unit, target computing unit and detection judging unit；
The image for the gel ink pen that described image processing unit is used to acquire image capture module pre-processes, and obtains in be detected
The profile diagram of property pen；The target computing unit calculates neutral pen ink to be detected by the profile diagram that image processing unit obtains
Pixel value；The detection judging unit show that the calculated for pixel values of gel ink pen to be detected is to be detected out by target computing unit
The appearance height of ink in gel ink pen, and judge whether the ink height in gel ink pen is qualified.
Further, described image processing unit includes filter processing unit, binary conversion treatment unit, Morphological scale-space list
Member and edge detection unit；The filter processing unit to the image that image capture module acquires for being filtered to obtain
First intermediate image；The binary conversion treatment unit obtains second for carrying out binary conversion treatment to first intermediate image
Intermediate image；The Morphological scale-space unit is used to carry out Morphological scale-space to second intermediate image to obtain third middle graph
Picture；The edge detection unit obtains gel ink pen to be detected from the third intermediate image using digital image edge detection technology
The profile diagram of ink.
Further, the filter processing unit is filtered using the image that Gaussian filter acquires image capture module
Wave noise reduction obtains first intermediate image.
Further, the edge detection unit obtains institute using Canny edge detection algorithm from third intermediate image
State the profile diagram of neutral pen ink to be detected.
Further, the detection judging unit includes pixel value extraction unit, parameter default unit, comparison judgment unit
With structure recording unit；Neutrality to be detected is extracted in the profile diagram that the pixel value extraction unit is obtained by target computing unit
The pixel value of pen；The parameter presets unit and is used to extract neutral pen ink profile according to the pixel value of pixel value extraction unit
Parameter preset；The comparison judgment unit is used for the appearance height of neutral pen ink and the standard board pen ink appearance height prestored
It is compared, and judges whether the height of the neutral pen ink is qualified；The result recording unit is used for qualified gel ink pen
On encoded radio deposit chained list in.
A kind of neutral pen ink height detection method based on machine vision, comprising the following steps:
Step 1: gel ink pen is placed on oil pipe delivery module, is then generated and gel ink pen to be detected by encoder
Corresponding encoded radio；
Step 2: when detecting module detects that gel ink pen reaches the predetermined position of image capture module, Image Acquisition mould
Block records encoded radio in predetermined position and acquires the image of neutral pen ink to be detected；
Step 3: when detecting module detects that gel ink pen reaches the predetermined position of image analysis module, image analysis mould
Root tuber calculates the pixel value of neutral pen ink to be detected according to the image of acquisition, judges neutral pen ink to be detected further according to pixel value
Height it is whether qualified；
Step 4: when detecting module detects that gel ink pen reaches the predetermined position of board pen ink screening module, pass through pen and ink
Water screening module filters out the qualified gel ink pen of detection and rejects the underproof gel ink pen of detection.
Further, the oil pipe delivery module is transported using conveyer belt apparatus.
The present invention has the advantages that
A kind of neutral pen ink height detecting system and detection method based on machine vision proposed by the present invention, by drawing
Enter machine vision metrology building closed loop detection pattern, the image of neutral pen ink can be detected in time and reject unqualified neutrality
Pen；On the one hand, compared to manual detection mode, have the advantages that easy to operate, high-efficient, accuracy is high, on the other hand, compare
In the detection mode of contact, have the advantages that not damage sample；The detection method using digital image processing techniques quickly and
The accurate elevation information for obtaining board pen ink, not only can make testing staff free from the heavy duplication of labour, can be with
Improve the accuracy and efficiency of gel ink pen package detection.
Detailed description of the invention
Fig. 1 is a kind of process signal of neutral pen ink height detecting system based on machine vision proposed by the present invention
Figure；
Fig. 2 is the flow diagram of image analysis module in the system；
A kind of Fig. 3 flow diagram of the neutral pen ink height detection method based on machine vision proposed by the present invention；
Fig. 4 is that the frame of image analysis module in the detection system constitutes schematic diagram；
Fig. 5 is the image that the image of gel ink pen in embodiment obtains after binary conversion treatment；
Fig. 6 is the image that the image of gel ink pen in embodiment obtains after Canny edge detection algorithm；
Fig. 7 is the image that image capture module acquires in the detection method.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Diagram and specific embodiment are closed, the present invention is further explained.
As shown in Figures 1 to 7, a kind of neutral pen ink height detecting system packet based on machine vision proposed by the present invention
Include oil pipe delivery module, detecting module, image capture module, image analysis module and ink screening module；The oil pipe transmission
Module, the oil pipe delivery module are used for carrying gel ink pen to be detected；The detecting module, the detecting module is for detecting oil
When the gel ink pen to be detected of pipe delivery module carrying is by predetermined position, standby signal is issued；Described image acquisition module, it is described
Image capture module calculates the pixel value of neutral pen ink to be detected for the image of acquisition, and image capture module is receiving prompt
Start to acquire the image of neutral pen ink to be detected after signal；Described image analysis module, described image analysis module are used for root
The pixel value of neutral pen ink to be detected is calculated according to the image that image capture module acquires, and judges neutral pen ink to be detected
Whether height is qualified；The ink screening module, the board pen ink screening module be used to filter out the qualified gel ink pen of detection with
And it rejects and detects underproof gel ink pen.
By using above-mentioned technical proposal, the oil pipe delivery module is by gel ink pen carrying to be detected to designated position, institute
It is conveyer belt transport establishment that oil pipe delivery module, which is stated, in this implementation column；Encoder (encoder) is to carry out signal or data
Work out, be converted to can by communication, transimission and storage signal form equipment.In this example embodiment, encoder is utilized
Encoded radio corresponding with gel ink pen to be detected is generated, so as to using the encoded radio as subsequent identification gel ink pen to be detected
Foundation；Using the encoded radio of gel ink pen to be detected as the unique foundation for identifying the gel ink pen to be detected, avoids and examined in high speed
Missing inspection and accidentally screening under surveying.
The further setting of the present invention are as follows: if the detecting module includes the photoelectric sensing that equipment for drying is set to designated position
Device, the photoelectric sensor are used for when oil pipe delivery module carrying gel ink pen to be detected is by designated position, issue prompt letter
Number.
By using above-mentioned technical proposal, in this implementation column, several described photoelectric sensors, which can be set, to be transmitted
With the predetermined position in transport establishment, the gel ink pen to be detected described in the oil pipe delivery module carrying passes through the predetermined position
When, photoelectric sensor can issue standby signal according to the variation of optical signal.
The further setting of the present invention are as follows: described image acquisition module includes image pick-up card, industrial camera and light source；
Described image capture card is used to receive the standby signal of detecting module sending, and receives record encoder after the standby signal and work as
Previous existence at encoded radio；The industrial camera is to be checked for acquiring after the standby signal that image pick-up card receives detecting module
Survey the image of gel ink pen；The light source is used for gel ink pen by polishing when predetermined position.
By using above-mentioned technical proposal, in the present embodiment, described image capture card is available digitized image
Information, and the hardware device for being stored and being played back；Image pick-up card is used to receive the standby signal of detecting module sending
And the encoded radio that encoder is currently generated is recorded after receiving standby signal；The industrial camera is stablized with hi-vision
Property, high-transmission ability and high anti-jamming capacity, the industrial camera can be the camera based on CCD, CMOS chip；In the figure
After the standby signal for receiving detecting module as capture card, the figure that industrial camera acquires neutral pen ink to be detected can control
Picture.
In the present embodiment, described image acquisition module can also include camera lens, light source, display and controlling terminal；Its
In, the camera lens uses telecentric lens, and the light source is directional light；It can be shot clearly by described image acquisition module
Image guarantees the validity of the object of shooting.
As shown in fig. 7, described image acquisition module can acquire the main view of board pen ink to be detected in this example embodiment
Figure.But it should be recognized that described image acquisition module can also acquire to be checked in other exemplary embodiment of the present invention
Other views of board pen ink are surveyed, do not do particular determination to this in this example embodiment.
The further setting of the present invention are as follows: described image analysis module include image processing unit, target computing unit and
Detect judging unit；The image for the neutral pen ink that described image processing unit is used to acquire image capture module is located in advance
Reason, and obtain the profile diagram of neutral pen ink to be detected；The profile that the target computing unit is obtained by image processing unit
Figure calculates the pixel value of neutral pen ink to be detected；The detection judging unit obtains neutrality to be detected by target computing unit
The calculated for pixel values of board pen ink goes out the appearance height of neutral pen ink to be detected, and judges whether neutral pen ink height is qualified.
By using above-mentioned technical proposal, described image processing unit can be used for acquiring image capture module to be checked
The image for surveying neutral pen ink carries out pretreatment operation, and obtains the profile diagram of neutral pen ink to be checked, passes through image procossing list
The image for the neutral pen ink to be detected that member can acquire image capture module carries out certain transformation, to reach suitable calculating
The purpose that machine extracts characteristics of image and identifies；The target computing unit can be used for according to the gel ink pen to be detected
The profile diagram of ink calculates outliner pixel values；The outliner pixel values that the detection judging unit is obtained according to target computing unit
Judge whether the height of neutral pen ink to be detected is qualified.
As shown in figure 4, described image analysis module 500 includes central processing unit 522, it further comprise one or more
Processor, and the memory 523 as representated by external module, the reservoir 523 is for storing by central processing unit 522
Instruction；The application program stored in the memory 523 may include one or more, each of which application program is one group corresponding
The module of instruction；In addition, central processing unit 522 is configured as executing instruction, to execute the above method；
Described image analysis module 500 further includes a power supply module 521 and is configured as executing image analysis module 500
Power management, described image analysis module 500 further includes a wired or wireless network interface 524 and is configured as image
Analysis module 500 is connected to network, and described image analysis module 500 further includes data (I/O) interface 525；Described image
Analysis module 500 can be operated based on the operating system for being stored in central processing unit 522, such as Windows ServerTM, Mac
OS XTM, UnixTM and LinuxTM.
The further setting of the present invention are as follows: described image processing unit include filter processing unit, binary conversion treatment unit,
Morphological scale-space unit and edge detection unit；The image that the filter processing unit is used to acquire image capture module carries out
Filtering processing obtains the first intermediate image；The binary conversion treatment unit, for carrying out binaryzation to first intermediate image
Processing obtains the second intermediate image；The Morphological scale-space unit is used to carry out Morphological scale-space to second intermediate image to obtain
To third intermediate image；The edge detection unit is obtained using digital image edge detection technology from the third intermediate image
The profile diagram of neutral pen ink to be detected.
By using above-mentioned technical proposal, the filter processing unit be used for image capture module acquire it is to be detected in
The image of property pen is filtered to obtain the first intermediate image；Industrial camera acquired image inevitably will receive the dry of noise
It disturbs, can eliminate or reduce noise by above-mentioned filter processing unit.In the present embodiment, the filter processing unit uses Gauss
Filter is filtered noise reduction to the image of the neutral pen ink to be detected and obtains the first intermediate image；Gaussian filtering it is basic
Method is to select the template of certain structure, each of scan image pixel, with the weighting of pixel in the determining neighborhood of template
Average gray value goes the value of alternate template central pixel point.
The binary conversion treatment unit is used to carry out binary conversion treatment to the first intermediate image to obtain the second intermediate image.Such as
Shown in following formula, image binaryzation processing is that the gray value of all pixels is set to 255 greater than given threshold value T, less than giving
That determines threshold value T is set to 0, and treated in this way, and image just only has black-and-white two color, so that tonal range is divided into target and background two
Class, the pixel region decision that wherein gray scale is 0 is ink, and obtained binary map is as shown in Figure 5.
The Morphological scale-space unit is used to carry out Morphological scale-space to the second intermediate image to obtain third intermediate image.Through
The image of filtering treated neutral pen ink to be detected is crossed when carrying out binary conversion treatment, often around pen and ink water area
There are some tiny particles and stain, form lesser pseudo- target point in background area, therefore to carry out morphology to image
Processing will not change the shape and area of pen and ink water area to eliminate the defect point occurred in image.This example embodiment party
In formula, the Morphological scale-space unit carries out opening operation to the second intermediate image first, eliminates the noise occurred in image, then
Closed operation is carried out to image again, eliminates in image and particle occurs, can specifically pass through the function cvThreshold in OpenCV
It realizes, the realization of Matlab language also can be used.
The edge detection unit is obtained from third intermediate image described to be checked using digital image edge detection technology
Survey the profile diagram of neutral pen ink.Pen and ink length normalization detects the edge line that be accurately positioned oil pipe, to reduce ink length
Measurement error and improve measurement accuracy, therefore edge detection is image processing operations indispensable in the present invention.Such as Fig. 6 institute
Show, in this example embodiment, extracted using Canny edge detection algorithm ink in third intermediate image and background it
Between boundary line, the edge detection unit first to third intermediate image carry out gradient amplitude and direction calculating, then
Non- extreme value inhibition is carried out to gradient magnitude, then detects and links edge with dual threashold value-based algorithm and obtain the profile diagram of gel ink pen to be checked.
In addition, described image processing unit further includes other parts and carries out other processing steps.For example, at filtering
Before managing step, using image pixel gray level rank as abscissa, the grey level histogram of image is obtained by ordinate of pixel quantity,
Enhance picture contrast by linear transformation, therefore is not limited thereto in the present exemplary embodiment.
In this example embodiment, the target computing unit is used for the profile diagram according to the neutral pen ink to be detected
Calculate the outliner pixel values of neutral pen ink to be detected.The basic principle is that using it under the premise of the profile of known object
Profile length and width describe the basic size of the object, it usually needs the calculated for pixel values profile elevations h for being included according to profile makees
For the basic size of the object.Calculating the most common method of ink outline height is the ash according to object under boundary operator processing
Image is spent, the pixel value that its profile includes is recorded, is calculated shared by a pixel value according to camera resolution and physical length
Unit length size calculates.Its specific steps can be summarized as:
(1) profile diagram obtained to edge detection calculates its outliner pixel values；
(2) ink height is acquired according to the length of actual size shared by each pixel value for required pixel value.
Further, the filter processing unit is filtered using the image that Gaussian filter acquires image capture module
Wave noise reduction obtains first intermediate image；The edge detection unit utilizes Canny edge detection algorithm from third middle graph
The profile diagram of the gel ink pen to be detected is obtained as in.
The further setting of the present invention are as follows: the detection judging unit include pixel value extraction unit, parameter preset unit,
Comparison judgment unit and structure recording unit；It is mentioned in the profile diagram that the pixel value extraction unit is obtained by target computing unit
Take the pixel value of gel ink pen to be detected；The parameter presets unit and is used to extract neutrality according to the pixel value of pixel value extraction unit
The parameter preset of board pen ink profile；The comparison judgment unit is used for the appearance height of neutral pen ink and the standard pen prestored
Ink appearance height is compared, and judges whether the height of the neutral pen ink is qualified；The result recording unit is used for will
In encoded radio deposit chained list on qualified gel ink pen.
By using above-mentioned technical proposal, in this example embodiment, the pixel value extraction unit is used for according to be checked
The profile diagram for surveying gel ink pen calculates the pixel value of gel ink pen to be detected.
The result recording unit can be used in the encoded radio deposit chained list by qualified gel ink pen；By will be qualified
Gel ink pen to be detected passes through in the encoded radio deposit chained list recorded when the photoelectric sensor, can determine in the follow-up process pair
Whether the height for the neutral pen ink to be detected answered is qualified.In addition, can also show ink in PC machine terminal in this example embodiment
The underproof gel ink pen to be detected of water height, and show to be specifically which detection project is unqualified, in order to which the later period is counted
Analysis.
In this example embodiment, the board pen ink screening module is used to filter out the qualified gel ink pen of detection and rejecting
Detect underproof gel ink pen.The board pen ink screening module includes solenoid valve sorting equipment, when pass through solenoid valve sorting equipment
Gel ink pen to be detected encoded radio not in the chained list when, that is, can determine whether the gel ink pen be substandard product, then may be used at this time
To notify solenoid valve sorting equipment to be sorted into substandard products collecting box.But it should be recognized that other are exemplary of the invention
In embodiment, the pen core screening module can also be realized using other feasible modes, it is not limited to this example embodiment party
Cited implementation in formula.
Design in the above-mentioned neutral pen ink height detection method based on machine vision is exploitation basic platform with VC++,
Program is write in conjunction with visibility function library Halcon and image procossing class libraries CImg to realize function required by standardized detection system
Energy.Entire software interface may include that image display area, base menu region, measurement setting regions and testing result are shown
Region part.The standardized detection system can not only realize the display function of Image Acquisition and realize that automatic discrimination board pen ink is high
Degree whether He Ge function, simultaneously, additionally it is possible to which in menu area the function of a little underlying parameters is arranged in realization.
Neutral pen ink height detection method in this example embodiment constructs closed loop by introducing machine vision metrology
Detection pattern can detect the image of gel ink pen to be detected in time and reject unqualified gel ink pen.On the one hand, compared to artificial inspection
Survey mode has many advantages, such as that easy to operate, high-efficient, accuracy is high；On the other hand, compared to contact measurement mode, have
Not the advantages of not damaging sample.
It should be noted that several modules or unit for acting the equipment executed are referred in above-detailed, this
Kind divides not enforceable.Embodiment according to the present invention, the spy of two or more above-described modules or unit
Function of seeking peace can embody in a module or unit；Conversely, the feature of an above-described module or unit
It can be to be embodied by multiple modules or unit with further division with function.
In addition, although describing each step of method in the present invention in the accompanying drawings with particular order, this does not really want
These steps must be executed in this particular order by asking or implying, or having to carry out step shown in whole could realize
Desired result；Additional or alternative, it is convenient to omit multiple steps are merged into a step and executed by certain steps, or
One step is decomposed into execution of multiple steps.
As shown in figure 3, a kind of neutral pen ink height detection method based on machine vision, comprising the following steps:
Step 1: gel ink pen is placed on oil pipe delivery module, is then generated and gel ink pen to be detected by encoder
Corresponding encoded radio；
Step 2: when detecting module detects that gel ink pen reaches the predetermined position of image capture module, Image Acquisition mould
Block records encoded radio in predetermined position and acquires the image of neutral pen ink to be detected；
Step 3: when detecting module detects that gel ink pen reaches the predetermined position of image analysis module, image analysis mould
Root tuber calculates the pixel value of neutral pen ink to be detected according to the image of acquisition, judges neutral pen ink to be detected further according to pixel value
Height it is whether qualified；
Step 4: when detecting module detects that gel ink pen reaches the predetermined position of board pen ink screening module, pass through pen and ink
Water screening module filters out the qualified gel ink pen of detection and rejects the underproof gel ink pen of detection.
The further setting of the present invention are as follows: the oil pipe delivery module is transported using conveyer belt apparatus.It is described to be checked
Survey gel ink pen in board pen ink pixel value extract parameter preset include the focal length of board pen ink in gel ink pen to be detected, illumination and
Shape.
Embodiment of above only technical concepts and features to illustrate the invention, its object is to allow those skilled in the art
Member understands the contents of the present invention and is implemented, and it is not intended to limit the scope of the present invention, all spiritual according to the present invention
The equivalent change or modification that essence is done, should be covered by the scope of protection of the present invention.
Claims (10)
1. a kind of neutral pen ink height detecting system based on machine vision, it is characterised in that:
Oil pipe delivery module, the oil pipe delivery module are used for carrying gel ink pen to be detected；
Detecting module, the detecting module are used to detect the gel ink pen to be detected of oil pipe delivery module carrying by predetermined position
When, issue standby signal；
Image capture module, described image acquisition module calculate the pixel of neutral pen ink height to be detected for the image of acquisition
Value, image capture module start to acquire the image of neutral pen ink to be detected after receiving standby signal；
Image analysis module, the image that described image analysis module is used to be acquired according to image capture module calculate neutrality to be detected
The pixel value of board pen ink height, and judge whether the height of neutral pen ink to be detected is qualified；
Ink screening module, the board pen ink screening module, which is used to filter out the qualified gel ink pen of detection and rejects detection, not to be conformed to
The gel ink pen of lattice.
2. a kind of neutral pen ink height detecting system based on machine vision according to claim 1, it is characterised in that:
The detecting module includes several photoelectric sensors for being installed in designated position, and the photoelectric sensor is used to transmit mould when oil pipe
Block carrying gel ink pen to be detected is by issuing standby signal when designated position.
3. a kind of neutral pen ink height detecting system based on machine vision according to claim 1, it is characterised in that:
Described image acquisition module includes image pick-up card, industrial camera and light source；Described image capture card is for receiving detecting mould
The standby signal that block issues, and the encoded radio that encoder is currently generated is recorded after receiving the standby signal；The industrial camera
For acquiring the image of neutral pen ink height to be detected after the standby signal that image pick-up card receives detecting module；It is described
Light source is used for gel ink pen by polishing when predetermined position.
4. a kind of neutral pen ink height detecting system based on machine vision according to claim 1, it is characterised in that:
Described image analysis module includes image processing unit, target computing unit and detection judging unit；Described image processing unit
The image of neutral pen ink height for acquiring to image capture module pre-processes, and obtains neutral pen ink to be detected
Profile diagram；The target computing unit calculates the picture of neutral pen ink to be detected by the profile diagram that image processing unit obtains
Element value；The detection judging unit show that the calculated for pixel values of neutral pen ink to be detected is to be detected out by target computing unit
The appearance height of neutral pen ink, and judge whether neutral pen ink height is qualified.
5. a kind of neutral pen ink height detecting system based on machine vision according to claim 4, it is characterised in that:
Described image processing unit includes filter processing unit, binary conversion treatment unit, Morphological scale-space unit and edge detection unit；
The filter processing unit to the image that image capture module acquires for being filtered to obtain the first intermediate image；It is described
Binary conversion treatment unit obtains the second intermediate image for carrying out binary conversion treatment to first intermediate image；The form
Processing unit is learned to be used to carry out Morphological scale-space to second intermediate image to obtain third intermediate image；The edge detection list
Member obtains the profile diagram of neutral pen ink to be detected using digital image edge detection technology from the third intermediate image.
6. a kind of neutral pen ink height detecting system based on machine vision according to claim 5, it is characterised in that:
The image that the filter processing unit acquires image capture module using Gaussian filter is filtered noise reduction and obtains described the
One intermediate image.
7. a kind of neutral pen ink height detecting system based on machine vision according to claim 5, it is characterised in that:
The edge detection unit obtains the neutral pen ink to be detected using Canny edge detection algorithm from third intermediate image
Profile diagram.
8. a kind of neutral pen ink height detecting system based on machine vision according to claim 4, it is characterised in that:
The detection judging unit includes pixel value extraction unit, the default unit of parameter, comparison judgment unit and structure recording unit；Institute
State the pixel value that neutral pen ink to be detected is extracted in the profile diagram that pixel value extraction unit is obtained by target computing unit；Institute
It states parameter and presets the parameter preset that unit is used to extract neutral pen ink profile according to the pixel value of pixel value extraction unit；It is described
Comparison judgment unit is sentenced for the appearance height of neutral pen ink to be compared with the standard board pen ink appearance height prestored
Break the neutral pen ink height it is whether qualified；The result recording unit is used to for the encoded radio on qualified gel ink pen being stored in
In chained list.
9. a kind of inspection carried out using a kind of neutral pen ink height detecting system based on machine vision described in claim 1
Survey method, it is characterised in that following steps:
Step 1: gel ink pen is placed on oil pipe delivery module, is then generated by encoder opposite with gel ink pen to be detected
The encoded radio answered；
Step 2: when detecting module detects that gel ink pen reaches the predetermined position of image capture module, image capture module exists
Predetermined position record encoded radio and the image for acquiring neutral pen ink to be detected；
Step 3: when detecting module detects that gel ink pen reaches the predetermined position of image analysis module, image analysis module root
The pixel value that neutral pen ink to be detected is calculated according to the image of acquisition judges the height of neutral pen ink to be detected further according to pixel value
Whether degree is qualified；
Step 4: when detecting module detects that gel ink pen reaches the predetermined position of board pen ink screening module, pass through pen and ink water sieve
Modeling block filters out the qualified gel ink pen of detection and rejects the underproof gel ink pen of detection.
10. a kind of neutral pen ink height detection method based on machine vision according to claim 9, feature exist
In: the oil pipe delivery module is transported using conveyer belt apparatus.
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