CN106264473A - A kind of LCD modulation skin detection imaging system and formation method - Google Patents
A kind of LCD modulation skin detection imaging system and formation method Download PDFInfo
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- CN106264473A CN106264473A CN201610885371.1A CN201610885371A CN106264473A CN 106264473 A CN106264473 A CN 106264473A CN 201610885371 A CN201610885371 A CN 201610885371A CN 106264473 A CN106264473 A CN 106264473A
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- 238000003384 imaging method Methods 0.000 title claims abstract description 34
- 238000001514 detection method Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 9
- 230000033228 biological regulation Effects 0.000 claims abstract description 5
- 230000010287 polarization Effects 0.000 claims description 21
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims 1
- 230000035945 sensitivity Effects 0.000 abstract description 5
- 210000003491 skin Anatomy 0.000 description 33
- 230000008569 process Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000001225 therapeutic effect Effects 0.000 description 2
- 208000002874 Acne Vulgaris Diseases 0.000 description 1
- 241000239290 Araneae Species 0.000 description 1
- 206010008570 Chloasma Diseases 0.000 description 1
- 206010015150 Erythema Diseases 0.000 description 1
- 208000003351 Melanosis Diseases 0.000 description 1
- 206010000496 acne Diseases 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002500 effect on skin Effects 0.000 description 1
- 210000002615 epidermis Anatomy 0.000 description 1
- 231100000321 erythema Toxicity 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000010191 image analysis Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 235000014593 oils and fats Nutrition 0.000 description 1
- 238000012634 optical imaging Methods 0.000 description 1
- 231100000915 pathological change Toxicity 0.000 description 1
- 230000036285 pathological change Effects 0.000 description 1
- 230000001575 pathological effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 150000004032 porphyrins Chemical class 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 201000004700 rosacea Diseases 0.000 description 1
- 230000005808 skin problem Effects 0.000 description 1
- 230000036548 skin texture Effects 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Classifications
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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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/44—Detecting, measuring or recording for evaluating the integumentary system, e.g. skin, hair or nails
- A61B5/441—Skin evaluation, e.g. for skin disorder diagnosis
Abstract
The invention discloses a kind of LCD modulation skin detection imaging system and formation method, a LCD assembly that imaging system includes setting gradually, the 2nd LCD assembly, linear polarizer, CCD/CMOS image-forming assembly, for controlling the first controller and the second controller of phase-delay quantity, and for processing the computer module of image；Wherein, a LCD assembly and the 2nd LCD assembly are respectively arranged with the first light hole and the second light hole；It can obtain multiple images by the regulation of a LCD assembly and the phase-delay quantity of the 2nd LCD assembly.First controller of the present invention and second controller regulate a LCD assembly and the phase-delay quantity of the 2nd LCD assembly respectively, and obtain the multiple images under many group out of phase retardations, multiple images have been respectively increased the sensitivity of feature various to skin surface, and it is conducive to improving the fineness of imaging and comprehensive.
Description
Technical field
The present invention relates to skin detection imaging technique, especially relate to a kind of LCD modulation skin detection imaging system and one-tenth
Image space method.
Background technology
Skin detection instrument is the currently the only instrument that the pathological characteristics of skin can carry out quantitative analysis, and its appearance makes
Skin treating has taken leave of the history in the past judged with doctors experience only according to naked eyes, can diagnose skin conditions accurately, quantitatively, it
There is provided skin diagnosis report more accurate, clear, easy to understand for doctor and patient, thus more efficiently improve skin
Improvement, therapeutic effect.
Skin detection instrument uses advanced optical imagery and software science and technology, immediately measure and analyze the speckle of epidermis, pore,
Wrinkle and skin texture, and the veins beneath the skin that produces and pigmentosa pathological changes owing to ultraviolet irradiates, such as porphyrin (oils and fats), brown
Mottle, erythema etc., and disclose caused by them such as potential danger such as chloasma, acne, rosacea and spider shape phlebangioma
Danger, and then be easy to dermatologist and design most suitable therapeutic scheme for skin problem.
But, skin detection instrument in the market is all to use tradition directly optical imaging analysis, has imaging and differentiates
The shortcomings such as rate is relatively low, bad adaptability, skin properties sensitivity are low, it cannot be accomplished dermal imaging the most careful, comprehensive.There is mirror
In this, it is provided that a kind of Image analysis system comprehensive, careful, efficient becomes present stage problem demanding prompt solution.
Summary of the invention
It is an object of the invention to overcome above-mentioned technical deficiency, propose a kind of LCD modulation skin detection imaging system and one-tenth
Image space method, solves that optical imagery resolution in prior art is relatively low, bad adaptability, technical problem that skin properties sensitivity is low.
For reaching above-mentioned technical purpose, technical scheme provides a kind of LCD to modulate skin detection imaging system, bag
Include along light transmission direction set gradually a LCD assembly, the 2nd LCD assembly, linear polarizer, CCD/CMOS image-forming assembly,
It is respectively used to control the first controller and the second controller of the phase-delay quantity of a described LCD assembly and the 2nd LCD assembly,
And for processing the computer module of the image that described CCD/CMOS image-forming assembly gathers；Wherein, a described LCD assembly and
It is respectively arranged with on two LCD assemblies and the first light hole and the second light hole are set.
Preferably, the angle between slow axis and the slow axis of the 2nd LCD assembly of a described LCD assembly is 45 °, described
Angle between slow axis and the light transmission shaft of described linear polarizer of one LCD assembly is 90 °.
Preferably, the precision of described first controller and second controller output voltage is 1mV.
Preferably, the aperture of described first light hole and the second light hole is 20mm.
Preferably, the response wave band of a described LCD assembly and the 2nd LCD assembly is 400nm～700nm.
Meanwhile, the present invention also provides for a kind of LCD and modulates skin detection formation method, comprises the steps:
(1) light source irradiates skin, sequentially enters a LCD assembly and the 2nd LCD assembly through the irreflexive light of skin；
(2) regulation the oneth LCD assembly and the phase-delay quantity of the 2nd LCD assembly, inject the light after twice Phase delay
Linear polarizer, and by CCD/CMOS image-forming assembly, the line polarized light of linear polarizer outgoing is carried out Polaroid；
(3) repeating step (2), regulation forms a LCD assembly and many groups of different Phase delay of the 2nd LCD assembly
Amount, and obtain multiple images that the phase-delay quantity different from many groups is corresponding.
Preferably, multiple images that described LCD modulation skin detection formation method also includes obtaining step (3) each
Individual pixel calculates, and obtains multiple polarization parameter based on each pixel, and the value of each polarization parameter is formed
One width polarization image, obtains several polarization parameter images altogether.
Preferably, the computing formula of Stokes parameter is:
Wherein, I is the light intensity value that CCD/CMOS image-forming assembly receives, S0For total light intensity of light wave, S1For light wave x direction
Linear polarization component and the light intensity difference of y line of direction polarized component, S2Inclined with-π/4 line of direction for light wave π/4 line of direction polarized component
Shake the light intensity difference of component, S3For the light intensity difference of light wave clockwise direction linear polarization component Yu left hand direction linear polarization component, δ1For
The phase-delay quantity of the oneth LCD assembly, δ2It it is the phase-delay quantity of the 2nd LCD assembly.
Compared with prior art, the first controller and the second controller of the present invention regulates a LCD assembly and respectively
The phase-delay quantity of two LCD assemblies, and obtain the multiple images under many group out of phase retardations, multiple images are respectively increased
The sensitivity of features various to skin surface, it is conducive to improving the fineness of imaging and comprehensive.
Accompanying drawing explanation
Fig. 1 is the attachment structure schematic diagram of the LCD modulation skin detection imaging system of the present invention；
Fig. 2 is the imaging effect figure of existing skin detection instrument；
Fig. 3 be the present invention LCD modulation skin detection imaging system imaging effect figure.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, right
The present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, and
It is not used in the restriction present invention.
Refer to Fig. 1, The embodiment provides a kind of LCD and modulate skin detection imaging system, including along light
LCD assembly the 1, a 2nd LCD assembly 2 that transmission direction sets gradually, linear polarizer 3, CCD/CMOS image-forming assembly 4, respectively
For controlling the first controller 5 and the second controller 6 of the phase-delay quantity of a described LCD assembly 1 and the 2nd LCD assembly 2,
And for processing the computer module 7 of the image that described CCD/CMOS image-forming assembly 4 gathers；Wherein, a described LCD assembly 1
First light hole and the second light hole are set with being respectively arranged with on the 2nd LCD assembly 2.
During concrete imaging, first pass through light source and irradiate skin, sequentially enter a LCD group through the irreflexive light of skin
Part 1 and the 2nd LCD assembly 2, regulate a LCD by controlling the output current potential of the first controller 5 and second controller 6 respectively
Assembly 1 and the phase-delay quantity of the 2nd LCD assembly 2, inject linear polarizer 3 by the light after twice Phase delay, and pass through
The line polarized light of linear polarizer 3 outgoing is carried out Polaroid by CCD/CMOS image-forming assembly 4；Secondary control the first controller 5 He again
The output current potential of second controller 6 regulates LCD assembly 1 and a phase-delay quantity for the 2nd LCD assembly 2, and passes through CCD/
Cmos imaging assembly 4 carries out imaging, and through repeatedly regulating, to form a LCD assembly 1 different with many groups of the 2nd LCD assembly 2
Phase-delay quantity, and obtain multiple images that the phase-delay quantity different from many groups is corresponding, then right by computer module 7
Above-mentioned multiple image processes.
When above-mentioned multiple images are processed, light intensity and LCD assembly the 1, a 2nd LCD assembly of emergent light can be obtained
The phase-delay quantity of 2, and the computing formula of Stokes parameter is determined by Mueller matrix:
Wherein, I is the light intensity value that CCD/CMOS image-forming assembly receives, S0For total light intensity of light wave, S1For light wave x direction
Linear polarization component and the light intensity difference of y line of direction polarized component, S2Inclined with-π/4 line of direction for light wave π/4 line of direction polarized component
Shake the light intensity difference of component, S3For the light intensity difference of light wave clockwise direction linear polarization component Yu left hand direction linear polarization component, δ1For
The phase-delay quantity of the oneth LCD assembly, δ2It it is the phase-delay quantity of the 2nd LCD assembly.
Concrete, each pixel to the multiple images obtained can be calculated by above-mentioned formula and calculate, obtain
Multiple polarization parameter based on each pixel, and the value of each polarization parameter is formed a width polarization image, obtain many altogether
Width polarization parameter image.Above-mentioned concrete handling process is the ordinary skill in the art, therefore is not described in detail at this.
And, the present embodiment computer module 7 may be used without as other routine techniquess of this area CCD/CMOS imaging group
The image that part 4 gathers processes, and the processing mode of computer module 7 is not restricted by the present embodiment at this, to process figure
The more preferably mode of picture is excellent.
Wherein, the angle between slow axis and the slow axis of the 2nd LCD assembly 2 of a LCD assembly 1 described in the present embodiment is
45 °, the angle between slow axis and the light transmission shaft of described linear polarizer 3 of a described LCD assembly 1 is 90 °.
Described in the present embodiment, the precision of the first controller 5 and second controller 6 output voltage is 1mV, and has stronger
Output stability, it is conducive to follow-up image procossing, it is ensured that the accuracy of process.And, can be by described first controller 5 He
Second controller 6 is all connected with computer module 7, in order to improves and can control described first controller 5 and second controller 6
Property.
The wavelength of the present embodiment incident light source may be configured as 400nm-700nm, correspondence, can be by a described LCD assembly 1
It is disposed as 400nm～700nm with the response wave band of the 2nd LCD assembly 2, thus is conducive to more accurately obtaining skin and characterizes spy
The image of property.Described in the present embodiment, the aperture of the first light hole and the second light hole is 20mm, consequently facilitating to the ripple passed through
The long light wave at 400nm-700nm carries out phase-modulation.
And the present embodiment LCD modulates the imaging advantages of skin detection imaging system for convenience of description, carry out following examination
Test: carry out contrasting imaging by the LCD modulation skin detection imaging system of existing conventional transdermal detector with the present embodiment.Specifically
For, conventional artificial's leather that selection market is bought is as sample, and carries out imaging under identical illumination, and the image after imaging is such as
Shown in Fig. 2, Fig. 3, from image comparison, the image that the LCD modulation skin detection imaging system of the present embodiment obtains is bright
Aobvious the most careful, comprehensive, it can more preferably react the real conditions of skin.
Compared with prior art, the first controller and the second controller of the present invention regulates a LCD assembly and respectively
The phase-delay quantity of two LCD assemblies, and obtain the multiple images under many group out of phase retardations, multiple images are respectively increased
The sensitivity of features various to skin surface, it is conducive to improving the fineness of imaging and comprehensive.
The detailed description of the invention of present invention described above, is not intended that limiting the scope of the present invention.Any basis
Various other that the technology design of the present invention is made change and deformation accordingly, should be included in the guarantor of the claims in the present invention
In the range of protecting.
Claims (8)
1. a LCD modulates skin detection imaging system, it is characterised in that include first set gradually along the transmission direction of light
LCD assembly, the 2nd LCD assembly, linear polarizer, CCD/CMOS image-forming assembly, be respectively used to control a described LCD assembly and
First controller of the phase-delay quantity of two LCD assemblies and second controller, and be used for processing described CCD/CMOS image-forming assembly
The computer module of the image gathered；Wherein, a described LCD assembly and the 2nd LCD assembly are respectively arranged with first and lead to light
Hole and the second light hole.
LCD the most according to claim 1 modulates skin detection imaging system, it is characterised in that a described LCD assembly
Angle between the slow axis of slow axis and the 2nd LCD assembly is 45 °, the slow axis of a described LCD assembly and described linear polarizer
Angle between light transmission shaft is 90 °.
LCD the most according to claim 2 modulates skin detection imaging system, it is characterised in that described first controller and
The precision of second controller output voltage is 1mV.
4. modulate skin detection imaging system according to the LCD described in Claims 2 or 3, it is characterised in that described first light hole
It is 20mm with the aperture of the second light hole.
LCD the most according to claim 4 modulates skin detection imaging system, it is characterised in that a described LCD assembly and
2nd LCD component responds wave band is 400nm～700nm.
6. a LCD modulates skin detection formation method, it is characterised in that comprise the steps:
(1) light source irradiates skin, sequentially enters a LCD assembly and the 2nd LCD assembly through the irreflexive light of skin；
(2) regulation the oneth LCD assembly and the phase-delay quantity of the 2nd LCD assembly, inject line by the light after twice Phase delay inclined
Shake sheet, and carries out Polaroid by CCD/CMOS image-forming assembly to the line polarized light of linear polarizer outgoing；
(3) repeating step (2), regulation forms a LCD assembly and many groups of different phase-delay quantities of the 2nd LCD assembly, and
Obtain multiple images that the phase-delay quantity different from many groups is corresponding.
LCD the most according to claim 6 modulates skin detection formation method, it is characterised in that described LCD modulation skin inspection
Survey formation method and also include that each pixel of multiple images step (3) obtained calculates, obtain based on each
Multiple polarization parameters of pixel, and the value of each polarization parameter is formed a width polarization image, obtain several polarization parameters altogether
Image.
8. modulate skin detection formation method according to the LCD described in claim 6 or 7, it is characterised in that the meter of Stokes parameter
Calculation formula is:
Wherein, I is the light intensity value that CCD/CMOS image-forming assembly receives, S0For total light intensity of light wave, S1Inclined for light wave x line of direction
The light intensity difference of component and the y line of direction polarized component of shaking, S2For light wave π/4 line of direction polarized component and-π/4 line of direction polarization point
The light intensity difference of amount, S3For the light intensity difference of light wave clockwise direction linear polarization component Yu left hand direction linear polarization component, δ1It is first
The phase-delay quantity of LCD assembly, δ2It it is the phase-delay quantity of the 2nd LCD assembly.
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Cited By (2)
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| CN108784647A (en) * | 2017-04-27 | 2018-11-13 | 立特克科技股份有限公司 | Skin detection device and its detection method |
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Application publication date: 20170104 |