CN109008951A - A kind of calibration method of reflectometry tool visual illumination system - Google Patents
A kind of calibration method of reflectometry tool visual illumination system Download PDFInfo
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- CN109008951A CN109008951A CN201810356648.0A CN201810356648A CN109008951A CN 109008951 A CN109008951 A CN 109008951A CN 201810356648 A CN201810356648 A CN 201810356648A CN 109008951 A CN109008951 A CN 109008951A
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- optical path
- path adjustment
- optical signalling
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
- A61B5/0077—Devices for viewing the surface of the body, e.g. camera, magnifying lens
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
- A61B5/0082—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes
- A61B5/0088—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes for oral or dental tissue
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2560/00—Constructional details of operational features of apparatus; Accessories for medical measuring apparatus
- A61B2560/02—Operational features
- A61B2560/0223—Operational features of calibration, e.g. protocols for calibrating sensors
- A61B2560/0228—Operational features of calibration, e.g. protocols for calibrating sensors using calibration standards
- A61B2560/0233—Optical standards
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- Pathology (AREA)
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- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Dentistry (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The present invention provides a kind of calibration method of reflectometry tool visual illumination system, the lighting system includes: graph data generating means, can generate the graph data illuminated required for machine vision；Optical signalling output device, the optical signalling of illumination required for machine vision capable of being exported according to the graph data；Optical path adjustment device can be adjusted the optical path of the optical signalling, so that the optical signalling provides illumination in a desired manner for measurand；The optical path adjustment device includes multiple optical path adjustment units, and the graph data includes graphic element corresponding with each optical path adjustment unit；The described method includes: the step of each optical path adjustment unit is aligned with corresponding graphic element；Brightness calibration step；Colour temperature calibration steps.
Description
Technical field
The present invention relates to a kind of lighting systems for machine vision, are especially used for tcm diagnosis expert system or auxiliary
The lighting system of diagnostic system.
Background technique
" prestige " that lingual diagnosis belongs in the Chinese medicine four methods of diagnosis is examined, and tcm diagnosis mode is important.Lingual diagnosis only needs the tongue picture of patient,
Without the auxiliary of complex diagnostics instrument, have the characteristics that at low cost, effect is good, interference of traditional lingual diagnosis by external factor,
It cannot be guaranteed that the objectivity of diagnostic result, therefore the automation of TCM tongue diagnosis, the research that objectifies are of great significance.
Machine vision is fast-developing branch of artificial intelligence.In brief, machine vision is exactly to use machine
It measures and judges instead of human eye.NI Vision Builder for Automated Inspection is by machine vision product (i.e. image-pickup device, such as CMOS
And CCD) target will be ingested be converted into picture signal, it sends dedicated image processing system to, obtains the form of target subject
Information is transformed into digitized signal according to the information such as pixel distribution and brightness, color;Picture system carries out these signals each
Operation is planted to extract clarification of objective, and then controls the device action at scene according to the result of differentiation.
Existing image-pickup device can be sent out using lighting systems such as flash lamp, LED when the Image Acquisition for lingual diagnosis
Raw reflective phenomenon is difficult to differentiate between to form the overexposure region of white on tongue picture with the tongue fur region of white.Therefore, originally
Field need it is a kind of for for tongue picture diagnosis NI Vision Builder for Automated Inspection lighting system, can be avoided it is reflective caused by interference,
Improve picture quality.
Summary of the invention
The purpose of the present invention is to provide a kind of lighting systems for the NI Vision Builder for Automated Inspection for the diagnosis of tongue picture, can
Avoid it is reflective caused by interference, improve picture quality.
Technical scheme is as follows.
A kind of calibration method of the lighting system for machine vision, the lighting system include:
Graph data generating means can generate the graph data illuminated required for machine vision；
Optical signalling output device, the optics letter of illumination required for machine vision capable of being exported according to the graph data
Number；
Optical path adjustment device can be adjusted the optical path of the optical signalling, so that the optical signalling is with required
Mode provide illumination for measurand；The optical path adjustment device includes multiple optical path adjustment units, the graph data packet
Include graphic element corresponding with each optical path adjustment unit；
The described method includes:
The step of each optical path adjustment unit is aligned with corresponding graphic element；
Brightness calibration step；
Colour temperature calibration steps.
Preferably, the optical signalling of the graphic element is output to corresponding optical path tune by the optical signalling output device
On whole unit.
Preferably, the optical path adjustment device includes a bracket, and the multiple optical path adjustment unit is set to the bracket
On, and the optical signalling of corresponding graphic element can be reflected into measurand respectively.
Preferably, substantially in a ring, the multiple optical path adjustment unit is distributed generally uniformly in the branch to the bracket
On frame.
It preferably, further include to the optical signalling output device before the brightness calibration step, colour temperature calibration steps
The step of preheating.
Preferably, the optical path adjustment unit includes plane mirror.
Preferably, described the step of being directed at each optical path adjustment unit with corresponding graphic element, includes:
The imaging plane of the optical signalling output device is focused on to the working face of the optical path adjustment unit；
The output scaling of the graphic element is adjusted to minimum；
Increase the output scaling of the graphic element step by step and records reality output graphic element size and corresponding optical path
Adjustment unit scale error, until scaling is maximum；
Set the optical signalling output device to the scaling when error minimum.
Preferably, the brightness calibration step includes:
A corresponding graphic element output optical signalling in the optical path adjustment unit is chosen, other graphic elements are closed
Optical signalling；
The brightness value for the optical signalling that the graphic element of selection exports is adjusted to minimum；
Increase the brightness of the optical signalling of the graphic element output step by step and deposits the illumination zone of object being observed and brightness
The graph data generating means are stored up, until the brightness of output optical signalling reaches maximum；
The optical path adjustment unit chosen is replaced, is repeated the above steps.
Preferably, the colour temperature calibration steps colour temperature calibration steps includes:
Standard color comparison card is placed at object being observed；
A corresponding graphic element output optical signalling in the optical path adjustment unit is chosen, other graphic elements are closed
Optical signalling；
The color temperature value for the optical signalling that the graphic element of selection exports is adjusted to minimum；
Increase the color temperature value of the optical signalling of the graphic element output and the illumination zone and color of record standard colorimetric card step by step
Temperature, until the color temperature value of output optical signalling reaches maximum；
The optical path adjustment unit chosen is replaced, is repeated the above steps.
Preferably, the colour temperature calibration steps further comprises:
Calculate the corresponding illumination zone of each optical path adjustment unit and color temperature distribution data；
The illumination zone and color temperature distribution data are stored to the graph data generating means.
By above technical scheme, the present invention can calibrate lighting system, so that energy during the diagnosis of tongue picture
The illumination of the tongue to tested patient is enough more precisely controlled, to obtain higher-quality tongue image, guarantees subsequent figure
It is correct as what is analyzed and diagnosed.
Detailed description of the invention
Fig. 1 is lighting system structure schematic diagram of the invention.
Fig. 2 is tongue according to the present invention as diagnostic system structural schematic diagram.
Fig. 3 is lingual diagnosis image schematic diagram.
Specific embodiment
As shown in Fig. 1, a kind of lighting system for machine vision of the invention, comprising:
Graph data generating means can generate the graph data illuminated required for machine vision；
Optical signalling output device, the optics letter of illumination required for machine vision capable of being exported according to the graph data
Number；
Optical path adjustment device can be adjusted the optical path of the optical signalling, so that the optical signalling is with required
Mode provide illumination for measurand；
Wherein, the optical path adjustment device includes multiple optical path adjustment units, and the graph data includes adjusting with each optical path
The corresponding graphic element of unit.
In an optional embodiment, the graph data includes white light graph data and monochromatic light graph data.
Specifically, the optical signalling of the graphic element is output to corresponding optical path tune by the optical signalling output device
On whole unit.
Specifically, the optical path adjustment device includes a bracket, and the multiple optical path adjustment unit is set to the bracket
On, and the optical signalling of corresponding graphic element can be reflected into measurand respectively.
Specifically, the bracket is substantially in a ring.
Specifically, the multiple optical path adjustment unit is distributed generally uniformly on the bracket.
It will be appreciated by those skilled in the art that although the bracket in the present embodiment is substantially in a ring, and the multiple more
A optical path adjustment unit is distributed generally uniformly on the bracket, however the present invention is not limited thereto.Branch in the present invention
Frame can also use any applicable form, regular polygon or ellipse etc..Optical path adjustment unit in the present invention can be with
It is adjusted according to the posture of optical signalling output device, such as less close to the setting of the direction of optical signalling output device
Optical path adjustment unit, and more optical path adjustment units are set in the direction far from optical signalling output device.
Specifically, the optical path adjustment unit includes plane mirror.
In a preferred embodiment, each plane mirror in optical path adjustment device is all disposed in approximately the same plane,
Optical path is adjusted in the same way.
In another optional embodiment, the mirror surface direction of each plane mirror in optical path adjustment device can be according to need
Be adjusted so that the reflection mode of the plane mirror of different location is arranged according to position, with realize adjustment light diverging or
Converge characteristic.
In another optional embodiment, optical path adjustment unit can also include convex mirror and/or concave mirror, with into one
Step is adjusted optical path.
In an optional embodiment, the graph data includes a figure that can cover whole optical path adjustment units
Unit.This embodiment is larger for size, the position precision tolerance of optical path adjustment unit and graphic element, reduces processing
And assembly cost.
In an optional embodiment, the graph data includes multiple graphic elements, and each graphic element is extremely
Correspond to an optical path adjustment unit less.This embodiment can be irradiated to the position except optical path adjustment unit to avoid light
It sets, reduces the influence of veiling glare, improve illuminating effect.
As shown in Fig. 2, tongue of the invention is implemented as diagnostic device, including control device, image acquiring device, and above
Lighting system described in any one of example.
Specifically, the optical signalling of the lighting system output is white light.
Before carrying out the diagnosis of tongue picture, generally tongue is calibrated as the lighting system in diagnostic device, the side of calibration
Method includes the following steps.
The step of each optical path adjustment unit is aligned with corresponding graphic element.
Brightness calibration step.
Colour temperature calibration steps.
It specifically, further include to the optical signalling output device before the brightness calibration step, colour temperature calibration steps
The step of preheating.
Specifically, described the step of being directed at each optical path adjustment unit with corresponding graphic element, includes:
The imaging plane of the optical signalling output device is focused on to the working face of the optical path adjustment unit；
The output scaling of the graphic element is adjusted to minimum；
Increase the output scaling of the graphic element step by step and records reality output graphic element size and corresponding optical path
Adjustment unit scale error, until scaling is maximum；
Set the optical signalling output device to the scaling when error minimum.
Specifically, the brightness calibration step includes:
A corresponding graphic element output optical signalling in the optical path adjustment unit is chosen, other graphic elements are closed
Optical signalling；
The brightness value for the optical signalling that the graphic element of selection exports is adjusted to minimum；
Increase the brightness of the optical signalling of the graphic element output step by step and deposits the illumination zone of object being observed and brightness
The graph data generating means are stored up, until the brightness of output optical signalling reaches maximum；
The optical path adjustment unit chosen is replaced, is repeated the above steps.
Specifically, the colour temperature calibration steps colour temperature calibration steps includes:
Standard color comparison card is placed at object being observed；
A corresponding graphic element output optical signalling in the optical path adjustment unit is chosen, other graphic elements are closed
Optical signalling；
The color temperature value for the optical signalling that the graphic element of selection exports is adjusted to minimum；
Increase the color temperature value of the optical signalling of the graphic element output and the illumination zone and color of record standard colorimetric card step by step
Temperature, until the color temperature value of output optical signalling reaches maximum；
The optical path adjustment unit chosen is replaced, is repeated the above steps.
Specifically, the colour temperature calibration steps further comprises:
Calculate the corresponding illumination zone of each optical path adjustment unit and color temperature distribution data；
The illumination zone and color temperature distribution data are stored to the graph data generating means.
Using the present embodiment tongue as the key step of the process of diagnostic device it is as follows.
The tongue for being the patient diagnosed will be needed to be located on diagnostic device, so that tongue is in the illumination model of lighting system
Within enclosing, while being also within the field range of image acquiring device.
According to the form of the tongue of patient and position, the characteristic parameter of graph data is set.
The graph data that illumination required for machine vision is generated using graph data generating means, is output to optical signalling
Output device.
The optics of illumination required for exporting machine vision according to the graph data using optical signalling output device is believed
Number.
It is adjusted using optical path of the optical path adjustment device to the optical signalling, so that the optical signalling is with required
Mode for be tested patient tongue illumination is provided.
The image of tested patient is obtained using image acquiring device.
As shown in figure 3, the image of the tested patient of image acquiring device shooting includes the face of patient.The tongue picture diagnosis
Device further comprises image processing apparatus, and the image of the tongue of patient can be extracted from image, further to execute
Analysis and diagnosis.
The present invention is described in detail above, specific case used herein is to the principle of the present invention and embodiment party
Formula is expounded, and the above description of the embodiment is only used to help understand the method for the present invention and its core ideas.For this
The those skilled in the art in field, according to the thought of the present invention, there will be changes in the specific implementation manner and application range,
In conclusion the contents of this specification are not to be construed as limiting the invention.
Claims (10)
1. a kind of calibration method of the lighting system for machine vision, the lighting system include:
Graph data generating means can generate the graph data illuminated required for machine vision；
Optical signalling output device, the optics letter of illumination required for machine vision capable of being exported according to the graph data
Number；
Optical path adjustment device can be adjusted the optical path of the optical signalling, so that the optical signalling is with required
Mode provide illumination for measurand；The optical path adjustment device includes multiple optical path adjustment units, the graph data packet
Include graphic element corresponding with each optical path adjustment unit；
The described method includes:
The step of each optical path adjustment unit is aligned with corresponding graphic element；
Brightness calibration step；
Colour temperature calibration steps.
2. lighting system according to claim 1, which is characterized in that the optical signalling output device is by the figure list
The optical signalling of member is output on corresponding optical path adjustment unit.
3. lighting system according to claim 2, which is characterized in that the optical path adjustment device includes a bracket, described
Multiple optical path adjustment units are arranged on the bracket, and can be anti-by the optical signalling of corresponding graphic element respectively
It is mapped to measurand.
4. lighting system according to claim 3, which is characterized in that the bracket substantially in a ring, the multiple optical path
Adjustment unit is distributed generally uniformly on the bracket.
5. lighting system according to claim 4, which is characterized in that the brightness calibration step, colour temperature calibration steps it
Before further include the steps that the optical signalling output device preheat.
6. lighting system according to any one of claims 1-5, which is characterized in that the optical path adjustment unit includes flat
Face mirror.
7. lighting system according to claim 1 to 6, which is characterized in that described to adjust each optical path
The step of unit is aligned with corresponding graphic element include:
The imaging plane of the optical signalling output device is focused on to the working face of the optical path adjustment unit；
The output scaling of the graphic element is adjusted to minimum；
Increase the output scaling of the graphic element step by step and records reality output graphic element size and corresponding optical path
Adjustment unit scale error, until scaling is maximum；
Set the optical signalling output device to the scaling when error minimum.
8. lighting system according to claim 1 to 6, which is characterized in that the brightness calibration step includes:
A corresponding graphic element output optical signalling in the optical path adjustment unit is chosen, other graphic elements are closed
Optical signalling；
The brightness value for the optical signalling that the graphic element of selection exports is adjusted to minimum；
Increase the brightness of the optical signalling of the graphic element output step by step and deposits the illumination zone of object being observed and brightness
The graph data generating means are stored up, until the brightness of output optical signalling reaches maximum；
The optical path adjustment unit chosen is replaced, is repeated the above steps.
9. lighting system according to claim 1 to 6, which is characterized in that the colour temperature calibration steps colour temperature school
Quasi- step includes:
Standard color comparison card is placed at object being observed；
A corresponding graphic element output optical signalling in the optical path adjustment unit is chosen, other graphic elements are closed
Optical signalling；
The color temperature value for the optical signalling that the graphic element of selection exports is adjusted to minimum；
Increase the color temperature value of the optical signalling of the graphic element output and the illumination zone and color of record standard colorimetric card step by step
Temperature, until the color temperature value of output optical signalling reaches maximum；
The optical path adjustment unit chosen is replaced, is repeated the above steps.
10. lighting system according to claim 9, which is characterized in that the colour temperature calibration steps further comprises:
Calculate the corresponding illumination zone of each optical path adjustment unit and color temperature distribution data；
The illumination zone and color temperature distribution data are stored to the graph data generating means.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810356648.0A CN109008951A (en) | 2018-04-19 | 2018-04-19 | A kind of calibration method of reflectometry tool visual illumination system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810356648.0A CN109008951A (en) | 2018-04-19 | 2018-04-19 | A kind of calibration method of reflectometry tool visual illumination system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2766771Y (en) * | 2004-12-17 | 2006-03-29 | 北京工业大学 | Integrating sphere type TCM tongue picture collection apparatus |
| TW200623017A (en) * | 2004-12-31 | 2006-07-01 | Committee On Chinese Medicine And Pharmacy Dept Of Health | Tongue diagnosis systems and methods |
| CN101664581A (en) * | 2008-09-05 | 2010-03-10 | 深圳普门科技有限公司 | Method and device for implementing intelligent photonic scanning treatment by using light path regulator |
| CN105030200A (en) * | 2015-07-24 | 2015-11-11 | 天津大学 | Traditional Chinese medicine tongue body and tongue coating separation method based on green monochromatic source |
-
2018
- 2018-04-19 CN CN201810356648.0A patent/CN109008951A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2766771Y (en) * | 2004-12-17 | 2006-03-29 | 北京工业大学 | Integrating sphere type TCM tongue picture collection apparatus |
| TW200623017A (en) * | 2004-12-31 | 2006-07-01 | Committee On Chinese Medicine And Pharmacy Dept Of Health | Tongue diagnosis systems and methods |
| CN101664581A (en) * | 2008-09-05 | 2010-03-10 | 深圳普门科技有限公司 | Method and device for implementing intelligent photonic scanning treatment by using light path regulator |
| CN105030200A (en) * | 2015-07-24 | 2015-11-11 | 天津大学 | Traditional Chinese medicine tongue body and tongue coating separation method based on green monochromatic source |
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Application publication date: 20181218 |