CN106124054A - A kind of large format spectrum imaging color measuring device - Google Patents
A kind of large format spectrum imaging color measuring device Download PDFInfo
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- CN106124054A CN106124054A CN201610436387.4A CN201610436387A CN106124054A CN 106124054 A CN106124054 A CN 106124054A CN 201610436387 A CN201610436387 A CN 201610436387A CN 106124054 A CN106124054 A CN 106124054A
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- 238000001228 spectrum Methods 0.000 title claims abstract description 42
- 238000003384 imaging method Methods 0.000 title claims abstract description 29
- 238000000701 chemical imaging Methods 0.000 claims abstract description 21
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 21
- 238000005259 measurement Methods 0.000 claims abstract description 16
- 230000003287 optical effect Effects 0.000 claims abstract description 13
- 238000005286 illumination Methods 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims description 6
- 230000003595 spectral effect Effects 0.000 claims description 6
- 238000012937 correction Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 238000012800 visualization Methods 0.000 abstract description 7
- 230000010076 replication Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000013507 mapping Methods 0.000 description 3
- 238000001429 visible spectrum Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
- G01J3/50—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/02—Details
- G01J3/0205—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows
- G01J3/0237—Adjustable, e.g. focussing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/02—Details
- G01J3/0294—Multi-channel spectroscopy
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Spectrometry And Color Measurement (AREA)
Abstract
The present invention relates to a kind of large format spectrum imaging color measuring device, it includes light source, spectroscopic imaging main frame, rack, PC, optical table；Described light source is 45 °/0 ° illumination, and spectroscopic imaging main frame includes expanding light path, LCTF liquid crystal tunable filter, relaying light path and ccd detector.Apparatus of the present invention advantage is: can be applicable to measure the colour sample of large format, and the visualization realizing coloured image on RGB display reproduces；Metering system belongs to planar survey, improves work efficiency on the premise of ensureing certainty of measurement；Wide application, including being applicable to various high-precision Color Replication occasion.
Description
Technical field
The present invention relates to a kind of large format spectrum imaging color measuring device.
Background technology
Whether accurate, the whether property of there are differences of product colour, will directly affect the quality of product, especially color multiple
Industry processed, as weaved, print, painting, historical relic and art work reproduction etc..
At present, common color measurement instrument is mainly colour difference meter and spectrophotometric colorimeter, and wherein colour difference meter uses photoelectric integration formula
Principle, it will be seen that the disposable integration of the light of all wavelengths in optical range, obtains the tristimulus values of sample, and according to three thorns
Sharp value calculates other parameters such as chromaticity coordinate, aberration.But its colour examining precision is the highest, it is impossible to measure the spectrum on sample surface
Feature.Spectrophotometric colorimeter determines colouring information by the optical power distribution of Measuring Object each wavelength of surface reflection, according to
Version difference is divided into mechanical scan and electronic type scanning.Mechanical scan is use that monochromator comes testee anti-
Penetrating light and carry out light splitting, owing to being limited by monochromator frame for movement, scanning speed is slow, and work efficiency is relatively low；Electronic type scanning is adopted
With photodetector, faster, work efficiency is higher for scanning speed relatively mechanical type, has higher precision simultaneously, is the most more
Conventional color detection instrument.
In actual application, colour difference meter and spectrophotometric colorimeter there is also shortcoming, are all i.e. a measurement during colour examining, it is impossible to obtain
The image information of sample, thus it is not directly applicable Color Replication.
Summary of the invention
It is an object of the invention to, for the shortcoming making up prior art, it is provided that a kind of large format spectrum imaging colour examining dress
Putting, this device can realize one-shot measurement process under book size >=200mm × 200mm to sample optional position color
The measurement of (luminosity and colorimetric parameter), the visualization simultaneously realizing coloured image on RGB display reproduces.This device is ensureing
On the premise of certainty of measurement, improve detection efficiency, the measurement of existing point is expanded to planar survey, can in particular be used for large area image
Color Replication.
The technical scheme is that
A kind of large format spectrum imaging color measuring device, it includes that light source, spectroscopic imaging main frame, rack, PC, optics are flat
Platform；Described light source is 45 °/0 ° illumination, and spectroscopic imaging main frame includes expanding light path, LCTF(Liquid Crystal Tunable
Filter) liquid crystal tunable filter, relaying light path and ccd detector.
Further technical scheme is:
Described large format spectrum imaging color measuring device, its rack is respectively with light source, spectroscopic imaging main frame and PC even
Connect；Light source output power and lamp box attitude are adjustable, provide the lighting environment of approximation CIE standard light source in visible spectrum.
Described large format spectrum imaging color measuring device, if it expands optical routing dry tablet expands light path lens composition,
If relaying optical routing dry tablet relaying light path lens composition.
Described large format spectrum imaging color measuring device, it expands light path, LCTF liquid crystal tunable filter, relaying
Light path and ccd detector use two-part parallel light path, expand light path and are connected by parallel light path with relaying light path；Light path is passed through
Front end expand light path after, form directional light and be incident in LCTF liquid crystal tunable filter, and through LCTF liquid crystal tunable
After humorous wave filter, still it is incident to relay in light path with directional light, is imaged on ccd detector target surface.
Described large format spectrum imaging color measuring device, its LCTF liquid crystal tunable filter is spectroscopic imaging main frame
Light-splitting device, expanding light path and relaying light path between.
Described large format spectrum imaging color measuring device, its rack includes power module and industrial computer；Power module
Power supply needed for providing for light source and spectroscopic imaging main frame；Industrial computer it is provided with multi-optical spectrum image collecting and controls software, using
In the coordinated signals of LCTF liquid crystal tunable filter dough-making powder battle array ccd detector, complete the collection of all channel spectrum images, with
Time complete spectral image data to include removing dark noise, medium filtering and the pretreatment of image non-uniformity correction.
Described large format spectrum imaging color measuring device, its PC includes multispectral image color management software, uses
Reproduce in realizing the high-fidelity visualization on RGB display of the multispectral image chrominance signal, complete image optional position simultaneously
Luminosity and the measurement of colorimetric parameter.
Described large format spectrum imaging color measuring device, its light source has 2 sets, altogether 12 D65 standard light sources, and these are 2 years old
Set luminous source lamp box is distributed in device both sides；Output and the lamp box attitude of light source are regulated and controled by rack.
Described large format spectrum imaging color measuring device, it expands optical routing four groups five and expands light path battery of lens
Becoming, relaying light path C is made up of six groups eight relaying light path lens.
Described large format spectrum imaging color measuring device, it measures breadth >=200mm × 200mm.
In conjunction with technical scheme, operation principle, the technique effect of the present invention is described as follows:
The present invention use LCTF liquid crystal tunable filter be core light-splitting device, planar array type CCD be that image device is built many
Light spectrum image-forming chromatic measuring system, by gathering the narrow-band spectrum signal of sample color, the spectrum rebuild in visible spectrum divides
Cloth, it is achieved to the detection of optional position chrominance signal in breadth.
Sample irradiates 0 ° through light source 45 ° and projects in spectroscopic imaging main frame, and rack controls in spectroscopic imaging main frame
Imaging in area array CCD detector image plane after liquid crystal tunable filter light splitting, the RAW image of detector output is encoded heavy
New organization is spectral image data, realizes visualization and the color measuring of coloured image after spectrum Hue space mapping on PC.
Rack resolves the instruction configuration file that PC sends, and obtains image acquisition control instruction.After resolving PC control instruction, control
The light splitting control of light-splitting device LCTF processed and the shooting of CCD camera.
Image acquisition flow process is: arrange centre wavelength and the sampling interval of LCTF, after LCTF light splitting completes, controls CCD
Camera exposure, the multispectral image data of the corresponding wave band of system acquisition, after collection, LCTF light splitting is to next centre wavelength,
CCD camera shoots the multispectral image data obtaining next wave band again, so circulates, until completing the multispectral of all wave bands
Image acquisition.After collection, after the original image of multiple passages is removed dark noise and random noise, carry out image conformity
Correction, finally adds corresponding label information, and reorganizes as multichannel light the Multi-band spectral imagery after rectification building-out
Spectrogram picture, is stored in local storage with tiff file, accesses for PC.
PC is provided with multispectral image color management software, is compiled by coding, interchannel in linearisation calibration, passage
The data such as the mapping of code, spectral space and spectrum color mapping process, it is achieved that multispectral image chrominance signal is at RGB electron display device
On high-fidelity visualization reproduce and the measurement of color.
Apparatus of the present invention have the advantage that
1. this device can be applicable to measure the colour sample of large format.
2. this measurement device mode belongs to planar survey, improves work efficiency on the premise of ensureing certainty of measurement.
3. wide application, including being applicable to various high-precision Color Replication occasion.
Can realize one-shot measurement process under book size >=200mm × 200mm to sample optional position luminosity and
The detection of colorimetric parameter, the visualization simultaneously realizing coloured image on RGB display reproduces.
Accompanying drawing explanation
Fig. 1 is that apparatus of the present invention form schematic diagram.
Fig. 2 is the spectroscopic imaging main frame optical system diagram of apparatus of the present invention.
In figure: 1 light source；2 spectroscopic imaging main frames；3 racks；4 PCs；5 optical tables；A expands light path；
B LCTF liquid crystal tunable filter；C relays light path；D ccd detector；A1, A2, A3, A4, A5 expand light Reuter
Mirror；C1, C2, C3, C4, C5, C6, C7, C8 relay light path lens.
Detailed description of the invention
It is as follows that the invention will be further described in conjunction with the accompanying drawings and embodiments:
Embodiment 1: be a basic embodiment of apparatus of the present invention.As shown in Figure 1, 2, a kind of large format spectrum imaging is surveyed
Color device, it is characterised in that it includes light source 1, spectroscopic imaging main frame 2, rack 3, PC 4, optical table 5；Described light source 1 is
45 °/0 ° illumination, spectroscopic imaging main frame 2 includes that expanding light path A, LCTF liquid crystal tunable filter B, relaying light path C and CCD visits
Survey device D.
Embodiment 2: be the further embodiment on the basis of embodiment 1.Described large format spectrum imaging is surveyed
Color device, its rack 3 is connected with light source 1, spectroscopic imaging main frame 2 and PC 4 respectively；Light source 1 output and lamp box attitude
Adjustable, the lighting environment of approximation CIE standard light source is provided in visible spectrum.If described light path A that expands is expanded by dry tablet
Light path lens A1, A2, A3, A4, A5 form, if relaying light path C by dry tablet relaying light path lens C1, C2, C3, C4, C5, C6, C7,
C8 forms.Described expand light path A, LCTF liquid crystal tunable filter B, relaying light path C and ccd detector D use two-part
Parallel light path designs, and expands light path and is connected by parallel light path with relaying light path, for improving the picture element of debuging of optical system, reduces
LCTF influence degree to picture element in the optical path, light path through front end expand light path A after, form directional light and be incident to LCTF liquid
In brilliant tunable optic filter B, and after LCTF liquid crystal tunable filter B, still it is incident to relay light path C with directional light
In, it is imaged on ccd detector D target surface.The described beam splitter that LCTF liquid crystal tunable filter B is spectroscopic imaging main frame 2
Part, is expanding between light path A and relaying light path C.Described rack 3 includes power module and industrial computer；Power module is light
Source 1 and spectroscopic imaging main frame 2 provide required power supply；Industrial computer it is provided with multi-optical spectrum image collecting and controls software, being used for
The coordinated signals of LCTF liquid crystal tunable filter B dough-making powder battle array ccd detector D, completes the collection of all channel spectrum images, with
Time complete spectral image data to include removing dark noise, medium filtering and the pretreatment of image non-uniformity correction.Described
PC 4 include multispectral image color management software, for realizing multispectral image chrominance signal height on RGB display
Fidelity visualization reproduces, and completes the measurement of image optional position luminosity and colorimetric parameter simultaneously.Described measurement breadth >=200mm
×200mm。
Embodiment 3: be the further embodiment on the basis of embodiment 1.Large format spectrum imaging color measuring device,
Described light source 1 has 2 sets, altogether 12 D65 standard light sources, and this 2 set luminous source lamp box is distributed in device both sides；The output of light source 1
Power and lamp box attitude are regulated and controled by rack 3.Described light path A that expands is expanded light path lens A1, A2, A3, A4, A5 by four groups five
Composition, relaying light path C is made up of six groups eight relayings light path lens C1, C2, C3, C4, C5, C6, C7, C8.
The claims in the present invention protection domain is not limited to above-described embodiment.
Claims (10)
1. a large format spectrum imaging color measuring device, it is characterised in that it includes light source (1), spectroscopic imaging main frame
(2), rack (3), PC (4), optical table (5)；Described light source (1) is 45 °/0 ° illumination, and spectroscopic imaging main frame (2) includes expanding
Beam optical path (A), LCTF liquid crystal tunable filter (B), relaying light path (C) and ccd detector (D).
Large format spectrum imaging color measuring device the most according to claim 1, it is characterised in that rack (3) respectively with
Light source (1), spectroscopic imaging main frame (2) and PC (4) connect；Light source (1) output and lamp box attitude are adjustable, visible
The lighting environment of approximation CIE standard light source is provided in spectrum segment.
Large format spectrum imaging color measuring device the most according to claim 1, it is characterised in that expand light path (A) by
If dry tablet expand light path lens (A1, A2, A3, A4, A5) composition, relaying light path (C) if by dry tablet relaying light path lens (C1, C2,
C3, C4, C5, C6, C7, C8) composition.
Large format spectrum imaging color measuring device the most according to claim 3, it is characterised in that expand light path (A),
LCTF liquid crystal tunable filter (B), relaying light path (C) and ccd detector (D) use two-part parallel light path, expand light path
It is connected by parallel light path with relaying light path；Light path through front end expand light path (A) after, formed directional light be incident to LCTF liquid
In brilliant tunable optic filter (B), and after LCTF liquid crystal tunable filter (B), still it is incident to relaying with directional light
In light path (C), it is imaged on ccd detector (D) target surface.
5. according to the large format spectrum imaging color measuring device described in claim 1 or 4, it is characterised in that LCTF liquid crystal can
Tuning filtering device (B) is the light-splitting device of spectroscopic imaging main frame (2), is positioned at and expands between light path (A) and relaying light path (C).
Large format spectrum imaging color measuring device the most according to claim 1, it is characterised in that rack (3) includes electricity
Source module and industrial computer；Power module is the power supply needed for light source (1) and spectroscopic imaging main frame (2) offer；Industrial computer is installed
There is multi-optical spectrum image collecting and control software, for the connection of LCTF liquid crystal tunable filter (B) dough-making powder battle array ccd detector (D)
Dynamic control, completes the collection of all channel spectrum images, completes spectral image data to include removing dark noise, intermediate value filter simultaneously
Ripple and the pretreatment of image non-uniformity correction.
Large format spectrum imaging color measuring device the most according to claim 1, it is characterised in that PC (4) includes many
Spectrum picture color management software, visualizes for realizing multispectral image chrominance signal high-fidelity on RGB display again
Existing, complete the measurement of image optional position luminosity and colorimetric parameter simultaneously.
Large format spectrum imaging color measuring device the most according to claim 1, it is characterised in that light source (1) has 2 sets,
Amounting to 12 D65 standard light sources, this 2 set luminous source lamp box is distributed in device both sides；The output of light source (1) and lamp box attitude
Regulated and controled by rack (3).
Large format spectrum imaging color measuring device the most according to claim 1, it is characterised in that expand light path (A) by
Four groups five expand light path lens (A1, A2, A3, A4, A5) composition, and relaying light path (C) is by six groups eight relaying light path lens
(C1, C2, C3, C4, C5, C6, C7, C8) forms.
Large format spectrum imaging color measuring device the most according to claim 1, it is characterised in that measurement breadth >=
200mm×200mm。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610436387.4A CN106124054A (en) | 2016-06-20 | 2016-06-20 | A kind of large format spectrum imaging color measuring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610436387.4A CN106124054A (en) | 2016-06-20 | 2016-06-20 | A kind of large format spectrum imaging color measuring device |
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| CN201610436387.4A Pending CN106124054A (en) | 2016-06-20 | 2016-06-20 | A kind of large format spectrum imaging color measuring device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108333801A (en) * | 2018-01-15 | 2018-07-27 | 武汉精测电子集团股份有限公司 | Liquid crystal module chromatic value acquisition system and method |
| CN112161708A (en) * | 2020-09-30 | 2021-01-01 | 湖南福瑞印刷有限公司 | Color measurement platform for calculating color tristimulus values and spectrum preprocessing method |
| CN112345471A (en) * | 2020-11-10 | 2021-02-09 | 深圳拓匠印前科技有限公司 | Hand-held intelligent color measuring instrument |
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| CN101109659A (en) * | 2007-08-15 | 2008-01-23 | 广东威创日新电子有限公司 | Device and method for color recognition |
| US20120250022A1 (en) * | 2011-04-01 | 2012-10-04 | X-Rite Europe Gmbh | Hand-Held Color Measurement Device |
| CN103968947A (en) * | 2013-02-05 | 2014-08-06 | 精工爱普生株式会社 | Colorimetry Method And Colorimetry Apparatus |
| CN104344895A (en) * | 2013-08-06 | 2015-02-11 | 精工爱普生株式会社 | Colorimetry apparatus |
-
2016
- 2016-06-20 CN CN201610436387.4A patent/CN106124054A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101109659A (en) * | 2007-08-15 | 2008-01-23 | 广东威创日新电子有限公司 | Device and method for color recognition |
| US20120250022A1 (en) * | 2011-04-01 | 2012-10-04 | X-Rite Europe Gmbh | Hand-Held Color Measurement Device |
| CN103968947A (en) * | 2013-02-05 | 2014-08-06 | 精工爱普生株式会社 | Colorimetry Method And Colorimetry Apparatus |
| CN104344895A (en) * | 2013-08-06 | 2015-02-11 | 精工爱普生株式会社 | Colorimetry apparatus |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108333801A (en) * | 2018-01-15 | 2018-07-27 | 武汉精测电子集团股份有限公司 | Liquid crystal module chromatic value acquisition system and method |
| CN112161708A (en) * | 2020-09-30 | 2021-01-01 | 湖南福瑞印刷有限公司 | Color measurement platform for calculating color tristimulus values and spectrum preprocessing method |
| CN112161708B (en) * | 2020-09-30 | 2023-03-24 | 湖南福瑞印刷有限公司 | Spectrum preprocessing method for calculating color tristimulus values |
| CN112345471A (en) * | 2020-11-10 | 2021-02-09 | 深圳拓匠印前科技有限公司 | Hand-held intelligent color measuring instrument |
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Application publication date: 20161116 |