CN203178183U - Traditional Chinese painting true and false identification device based on spectral imaging technology - Google Patents
Traditional Chinese painting true and false identification device based on spectral imaging technology Download PDFInfo
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Abstract
The utility model discloses a traditional Chinese painting true and false identification device based on a spectral imaging technology. The device comprises an image acquisition module and an image analysis and identification module, wherein the image analysis and identification module comprises a computer, a database and a display; the image acquisition module comprises a closed device, a broadband controllable stable light source, a spectral imaging device consisting of a charge coupled device (CCD), a lens and an optical fiber, and an image acquisition card connected with the CCD; the broadband controllable stable light source is positioned in the closed device. The identification method comprises the following steps: irradiating the traditional Chinese painting to the identified through the broadband controllable stable light source; and acquiring spectral images in different bands imaged by the spectral imaging system and transferring the images into the computer through the image acquisition card, and calling the database to perform analysis and comparison and outputting the identification result to the display through the computer. The identification method and device have the characteristics of combining the spectral characteristics and identifying the image characteristics, along with low background noise and uniform and controllable light intensity.
Description
Technical field
The utility model relates to light spectrum image-forming The Application of Technology field, is specifically related to the traditional Chinese Painting true and false identification device based on the light spectrum image-forming technology.
Background technology
The true and false of traditional Chinese Painting is differentiated and is mainly identified mode based on expert's experience at present, and ancient book picture evaluation field plays considerable effect at home.Experience is identified in very long history development procedure, sums up and accumulated rich experience and knowledge, has formed unique theoretical system.It has analytically formed distinctive method artistic forms such as painting and calligraphy pieces style, artistic power, the time still possessing great application prospect up to now.
Yet, must see, at present based on authentication method and the imperfection of expertise " order mirror ".At first, expert's experience is identified and is required the expert that enough " experience " arranged; A painting and calligraphy evaluation teacher's cultivation needs a large amount of relevant experience and the whetstone of long duration to practice, and the at present domestic great master who really deserves to be called national Ancient Chinese painting and calligraphy evaluation cans be counted on one's fingers.Secondly, painting and calligraphy identify that the evaluation experience that teachers provide a reference exists not enough in succession; Owing to there is not definite reference hierarchy (standard), even the unreserved mirror picture experience of teaching of evaluation great master, can the recipient pass on effectively toward contact depends on its " comprehensibility "; The deficiency of comprehensibility can cause the lost or part of great master's experience lost.Moreover, because be that experience is identified, lacking the quantitative description of related data, the qualification result between the different experts is often far from each other.At last, in the expert appraisal method, the expert appraisal suggestion tends to be subjected to the interference of relevant benefit side; Though most of expert can stand fast at professional ethics, can not fundamentally stop the appearance of " interests evaluation ".Because above-mentioned, the expert appraisal method can be under suspicion to a certain extent at present, many scholars attempt utilizing technological means to carry out the evaluation that ancient book is drawn, and grope the science and technology of Ancient Chinese painting and calligraphy and identify mode.
Can be applicable to scientific and technical scheme that painting and calligraphy identify at present mainly is divided into various spectral techniques and age inference analysis technology and differentiates based on the image true-false of computer vision.
Wherein spectral technique and age inference analysis technology can be carried out relevant materials in the painting and calligraphy effectively, comprise evidence obtaining and the discriminating of the information such as age, classification of used papery, pigment.Yet these technology evidence obtainings have the imperfection part too.Be that the technology evidence obtaining detects and need sample the relevant portion in the painting and calligraphy on the one hand, often will take a sample, extract (get involved and extract) to painting and calligraphy, the painting and calligraphy original paper is caused damage.On the other hand, sampling is normally local, and currently used technology evidence collecting method often merely does the analysis of material, the analysis in age, and the imitator utilizes relevant material often can get by under false pretences.Moreover the information of obtaining by technology evidence obtaining is the technical data of simple material normally, and is irrelevant with painting and calligraphy author's feature.At last, present technology evidence obtaining equipment is than complex and expensive, detection of complex.
Differentiate it then is the visually-perceptible mode of utilizing the computer mould personification based on the image true-false of computer vision, by technology such as image processing, computer vision and pattern-recognitions, with object most characteristic in the works, as drawing, seal and painting and calligraphy content etc., compare with original work, provide qualitative or quantitative index, judge the auxiliary foundation of this works true and false as people.Yet the main deficiency of this discrimination method is obtaining of image information is in the composite visible light wavelength band, the quantity of information deficiency, can't obtain the relevant physical chemistry information of painting and calligraphy by the image of analyzing different wave length, can not distinguish from the material behavior aspect to true, pseudo-works, can't differentiate high replication product.
For these reasons, the practicality of the science evidence collecting method of Ancient Chinese painting and calligraphy evaluation at present is not strong, and popularity rate is not high; The more important thing is that science evidence collecting method that the Ancient Chinese painting and calligraphy are identified is identified with traditional expert's painting and calligraphy as yet combines, and fails to obtain the approval that painting and calligraphy are identified the boundary, and industry correlative study worker seeking better always, more perfect authentication method.
Light spectrum image-forming (Spectral Imaging) is to be verified the object intensive monochromatic reflected light Luminance Distribution of equally distributed a plurality of narrow wave bands or fluorescent brightness distribution in certain spectral range by the imaging spectrometer record, forms the spectrum image collection that is made of many monochromatic light images.These spectrum images are with locus and the brightness values thereof of arbitrfary point in the imaging scope, really be verified object on corresponding object point position, optical characteristics corresponding one by one, and the spectral brightness curve on the every bit can reflect the chemical constitution that is verified on the object to a certain extent, therefore can check, differentiate material by spectrum picture.
The light spectrum image-forming technology can be divided into multispectral, high spectrum, ultraphotic spectrum by the spectral resolution difference.Wherein high spectrum and ultra-optical spectrum imaging system are owing to its spectral resolution height, and the scope of application is wider, but price is high, and data processing amount is big; And for specific to picture and working environment, multispectral technology more economically, data handle easier and signal to noise ratio (S/N ratio) is higher.
The light spectrum image-forming technology combines the function of spectroscopic analysis system and aerial image system, not only can obtain the pattern information of object, but also can access the corresponding spectral information of each pixel in the image, it had both had the high resolving power characteristic of graphical analysis, the chemical composition analysis function that has spectral analysis again, compare with simple graphical analysis or spectral analysis, have that quantity of information is bigger, function is more powerful, analytical approach flexible characteristic more, therefore enjoy attention in analyzing and processing and the information field of obtaining.From the seventies in 20th century, the light spectrum image-forming technology at first is applied to space flight and aviation remote sensing earth observation field, and progressively in field widespread uses such as agricultural, biomedicine, museum's works collection, food inspection, high precision colour print, computer graphicss.Since the nineties in 20th century, the light spectrum image-forming technical research of visible light wave range becomes the research forward position of color science, and has obtained very big development in the reproduction of color with copying, and still exists blank but be applied to the research that painting and calligraphy differentiate.
Papery product research based on the light spectrum image-forming technology at present has the true and false of printed matter to differentiate, it mainly carries out spectral scan by optical spectrum imagers to specimen, and utilize the spectroscopic data processor that the spectroscopic data of standard model in the reflectance spectrum data that collects and the data server is compared, can identify the close duplicate of color.But because printed matter is the product of industry in modern times, be worth relatively low, therefore in discrimination process only weight analysis compared the similarities and differences of printing materials such as paper, printing ink, and material itself is not carried out the age inference analysis, the painting and calligraphy content is not carried out meticulous image recognition yet.
And the traditional Chinese Painting discrimination method based on the light spectrum image-forming technology that the utility model proposes has important difference with it.Traditional Chinese Painting claims Chinese painting again, is the distinctive art form of the Chinese nation, establishes one's own system in fine arts field, the world, is typical case's representative of oriental art.But because its characteristic of damaging easily, the ancient book that spreads is so far drawn very rareness of quantity, has precious archaeological significance and cultureal value.The carrier material of traditional Chinese Painting comprises paper, China ink and various pigment, by analyzing and differentiate the employed paper of traditional Chinese Painting, China ink and pigment, help to understand painter employed material, manufacturing technology at that time, provide positive evidence and the identification result of some special paper, China ink and pigment can be the division of history into periods of traditional Chinese Painting.
Wherein be used for writing the Chinese traditional-handwork paper of drawing a picture and roughly can be divided into mulberry paper, numb paper, rattan paper, bamboo paper etc. according to used raw material difference, different paper is applied to different times, has different characteristics.Wherein rice paper is the peak of Chinese traditional mulberry paper production technology development, have pure white fine and closely woven, saturating and more light, be stale-proof and do not eat into and characteristics such as ink wetting capability, be the optimum carrier of performance Chinese Painting and Calligraphy art, be subjected to treasuring of the men of literature and writing, painting and calligraphy famous expert over the past thousands of years deeply.Again because the difference of each epoch technology, and fashion and expert of calligraphy and painting personal like are different, and paper can be used as the important references that painting and calligraphy are differentiated the division of history into periods.
The special status that China ink has in Chinese culture, it has long history as one of " writing brush, ink stick, ink slab and paper " in China, has very special status in world's material and technograph equally.China ink mainly is made up of cigarette material and sizing material, and general be used for writing the good China ink of drawing a picture and have that the thin matter heavily fortified point of cigarette, glue are clear, Se Hei and characteristics such as light show as the texture exquisiteness again simultaneously, good endurance, color is permanent as new, almost undergoes no deterioration, and has Mo Xiang.China ink also is used for drawing, printing, beauty treatment even medical except for writing, and it plays an important role to the cultural layer that promotes China's successive dynasties calligraphy, traditional Chinese Painting, colored drawing and printing.In addition, Chen Mo has the bright profit of black, the abundant feature of color sensation, and has the gas of one self fragrance simple and unsophisticated light far away, shows a kind of simple and unsophisticated tone, with new China ink tangible difference is arranged.
Chinese painting colour is the sole pigment of Chinese painting creation, though exclude the writing brush, ink stick, ink slab and paper, but the indispensable important picture material of Chinese artist is an important component part of Chinese traditional painting system.It can be divided into mineral pigments, vegetalitas pigment and metal species pigment etc. substantially, and the pigment of various character role in drawing is different fully with the effect that shows.Mineral pigments claims " stone " again, natural crystal is processed and made through collection, pulverizing, grinding, rinsing, and it is the main pigment of strong color drawing painting, and its principal feature is that covering power is strong, stable in properties, durable, and distinctive crystalline solid gloss has increased the lightness of color.And the primary raw material of vegetalitas pigment is the juice that extracts the root, stem, leaf from plant, thereby is called " water colour " again, is characterized in that quality is transparent, color moist.It is with a long history that metal species pigment uses, and two kinds of gold, silver are only arranged in China's traditional drawing material, made by proof gold, fine silver, expensive, can produce magnificent effect on picture.Modern then as easy as rolling off a log variable color of tin-tube dress chemical pigment is difficult for preserving, and cannot stand the test of time, can't compare with traditional Chinese painting colour at all.
In addition, normal with the seal that can represent author's identity on the traditional Chinese Painting, this discriminating for traditional Chinese Painting provides reference frame.Seal claims again to print literary composition, is the trace that seal seal face is directly impressed by seal or adhesion colorant on papery product such as traditional Chinese Painting, is the important documents of proof traditional Chinese Painting authenticity.Since ancient times, the expert of calligraphy and painting is using the India side face, and each one nature is not quite similar, and the seal that the somebody is throughout one's life used is also few; And the somebody uses different seals in different periods, and the pattern of constantly more superseding chop, and all one's life is with not printing hundreds of.In addition, the seal that appears at the same content and form in the different works also is not quite similar, and this is that sharpness and the integrity degree of the different seals that cause with the positively biased situation of weight of gesture owing to impressing differs.Therefore in the difference while that the genuine seal of correct identification causes under different coining conditions, accurately distinguishing true and false seal is an important step differentiating the traditional Chinese Painting true and false.
Based on the characteristics of paper, China ink, pigment and seal in the above traditional Chinese Painting, the application has proposed to have reflective traditional Chinese Painting measurement and discrimination method and the implement device thereof of characteristics such as low ground unrest and light intensity homogeneous and controllable; And on this basis, at the characteristic of rice paper printing opacity, traditional Chinese Painting measurement and discrimination method and the device of transmission-type proposed further; It is last comprehensive that both propose to reflect traditional Chinese Painting measurement and discrimination method and implement device thereof with the transmission use in conjunction.
The utility model content
The purpose of this utility model is to overcome the prior art above shortcomings, and the traditional Chinese Painting true and false identification device based on the light spectrum image-forming technology is provided, and concrete technical scheme is as follows.
Traditional Chinese Painting true and false identification device based on the light spectrum image-forming technology, it comprises image capture module, and described image capture module comprises the controlled stabilized light source in obturator, the broadband that can shield extraneous unknown light source and have the uniform diffuse reflection characteristic, by CCD, camera lens and the optical filter image-taking system of forming and the image pick-up card that links to each other with CCD; The controlled stabilized light source in described broadband is arranged in described obturator, for generation of the light of different-waveband and shine traditional Chinese Painting to be identified; Described image-taking system is used for receiving the light of crossing traditional Chinese Painting to be identified through light or the transmission of traditional Chinese Painting reflection to be identified and carrying out imaging, described image pick-up card is used for gathering the spectrum picture of the different-waveband after the image-taking system imaging and dumping to computing machine, described computing machine also joins with image-taking system, obtains monochromatic light imaging in CCD by the optical filter in the control Image Acquisition system.
Further, described identification device also comprises display and described computing machine, computing machine is used for calling database to be analyzed relatively and with identification result and exports display to, and described database is used for spectral signature and the characteristics of image of the known traditional Chinese Painting authentic work of storage and traditional Chinese Painting to be identified.
Further, the controlled stabilized light source in described broadband and image-taking system the same side of being positioned at traditional Chinese Painting to be identified and all towards the front of traditional Chinese Painting to be identified.
Further, the controlled stabilized light source in described broadband and the image-taking system both sides that lay respectively at traditional Chinese Painting to be identified.
Further, optical filter, CCD, the camera lens in the described photograph system is arranged in turn.
Further, described identification device has two described image-taking systems and two image pick-up cards, and two image-taking systems lay respectively at the both sides of traditional Chinese Painting to be identified, and each image-taking system all is connected with described computing machine by an image pick-up card.
Further, the controlled stabilized light source in described broadband has spectral power distribution comparatively uniformly at visible light near infrared (380nm-1100nm) scope, and the light that light source sends makes the intensity of illumination size of every bit on the traditional Chinese Painting to be identified evenly under the uniform diffuse reflection effect of obturator inwall.
What the utility model provided based on one of discrimination method of the traditional Chinese Painting true and false identification device of light spectrum image-forming technology is: traditional Chinese Painting to be identified is placed can shield extraneous unknown light source and have in the obturator of uniform diffuse reflection characteristic, and shine traditional Chinese Painting to be identified at the inner controlled stabilized light source in broadband that uses of this obturator simultaneously, make the intensity of illumination size on the traditional Chinese Painting every bit to be identified even, and in whole measure spectrum scope, more uniform spectral power distribution is arranged; By the computer control optical filter, allow the reflected light of different spectral ranges enter the spectrum picture that forms different-waveband among the CCD of image-taking system, and dump in the computing machine by image pick-up card; Again by computing machine from the spectrum picture that collects, extract China ink, pigment and ink paste permeate spectral signature and characteristics of image in rice paper, and compare with the spectral signature of depositing authentic work and the characteristics of image that obtain in advance in the database, the difference of traditional Chinese Painting and authentic work China and Mexico, pigment, seal and rice paper of will waiting at last to reflect is carried out comprehensively, the works of difference less than preset value are judged to be very, difference is judged to be vacation greater than the works of preset value.
What the utility model provided based on two of the discrimination method of the traditional Chinese Painting true and false identification device of light spectrum image-forming technology is: traditional Chinese Painting to be identified is placed can shield extraneous unknown light source and have in the obturator of uniform diffuse reflection characteristic, and traditional Chinese Painting to be identified is between the CCD of the controlled stabilized light source in broadband and image-taking system, traditional Chinese Painting to be identified is supported by transparent carrier, and shine traditional Chinese Painting to be identified at the inner controlled stabilized light source in broadband that uses of this obturator simultaneously, make the intensity of illumination size on the traditional Chinese Painting every bit to be identified even, and in whole measure spectrum scope, more uniform spectral power distribution is arranged; The light that light source sends is through shining after the even diffusion on the traditional Chinese Painting of waiting to reflect, and the transmitted light in the different spectral ranges is entered among the CCD, form the spectrum picture of different-waveband, permeate spectral signature and characteristics of image in rice paper by analyzing China ink, pigment and the ink paste of having deposited authentic work in relatively wait to reflect traditional Chinese Painting and the database, comprehensive differences is regarded as genuine piece less than the traditional Chinese Painting to be reflected of preset value, and comprehensive differences is regarded as counterfeit greater than the works of preset value.
What the utility model provided based on three of the discrimination method of the traditional Chinese Painting true and false identification device of light spectrum image-forming technology is: traditional Chinese Painting to be identified is placed can shield extraneous unknown light source and have in the obturator of uniform diffuse reflection characteristic, and traditional Chinese Painting to be identified is between two image-taking systems, traditional Chinese Painting to be identified is supported by transparent carrier, and shine traditional Chinese Painting to be identified at the inner controlled stabilized light source in broadband that uses of this obturator simultaneously, make the intensity of illumination size on the traditional Chinese Painting every bit to be identified even, and in whole measure spectrum scope, more uniform spectral power distribution is arranged; The light that light source sends is through shining after the even diffusion on the traditional Chinese Painting of waiting to reflect, reflection enters among the CCD of obturator top image-taking system a part as reflected light, another part then passes traditional Chinese Painting to be reflected to be become transmitted light and enters among the CCD that lower images obtains system measurement when realizing reflection characteristic with transmissison characteristic; With the China ink, pigment and the ink paste that record under reflection and two kinds of situations of transmission permeate spectral signature in rice paper and characteristics of image respectively with database in corresponding spectral signature and characteristics of image compare, and the difference that differs greatly in these two kinds of situations compared with preset value, if difference then is judged to be vacation greater than preset value, if true less than then being judged to be.
In the above-mentioned discrimination method, wherein reflective discrimination method be with traditional Chinese Painting to be identified place airtight, have in the device of uniform diffuse reflection characteristic, unknown interference of light sources such as shielding natural light, and simultaneously at the light source of a broadband stable and controllable of device internal structure as known light source, make on the traditional Chinese Painting every bit of waiting to reflect the intensity of illumination size evenly, and in whole measure spectrum scope, more uniform spectral power distribution is arranged; And optical filter allows the reflected light of different spectral ranges enter the spectrum picture that forms different-waveband among the CCD under the control of computing machine, and dumps in the computing machine by image pick-up card; Again by computing machine from the spectrum picture that collects, extract China ink, pigment and ink paste permeate spectral signature and characteristics of image in rice paper, and compare with the normative reference in the database, draw identification result.The discrimination method of transmission-type then is that traditional Chinese Painting to be measured is placed on the transparent carrier between light source and the CCD, the light that is sent by light source enters among the CCD through rice paper after evenly spreading, form and reflective transmitted spectrum image with different optical feature, by analyzing relatively its spectral signature and characteristics of image, can draw identification result equally.Then be comprehensive preceding two kinds of methods as for reflection and the discrimination method of transmission use in conjunction, by measuring reflection characteristic and the transmissison characteristic of the traditional Chinese Painting of waiting to reflect simultaneously under same even illumination, and comprehensively both comparative result draws the discriminating conclusion.These three kinds of traditional Chinese Paintings are measured with discrimination method all has low ground unrest, light intensity homogeneous and controllable, spectral power evenly distribution and spectral signature, feature combinations analysis characteristics relatively.
The utility model proposes three kinds of traditional Chinese Painting distinguishing method between true and false and devices under the low ground unrest, compared with prior art, the utlity model has following advantage and technique effect:
(1) low ground unrest
Traditional Chinese Painting is lain against in the airtight device, and the unknown light source that shielding is extraneous has reduced the ground unrest in the scanning result, has improved the signal to noise ratio (S/N ratio) of scanning output.
(2) the even controlled amount of light intensity
The inner uniform diffuse reflection material that adopts of obturator in feature (1), and with the light source of a plurality of stable and controllable as known luminaire, mode by the multi-angle irradiation makes irradiates light become even in field range, thereby guaranteeing to be radiated at waits to reflect that the intensity of illumination of every bit all is that size is consistent on the traditional Chinese Painting, and does not change in time and fluctuate.
(3) spectral power evenly distributes
The light source that adopts in feature (2) has the advantages that even spectral power distribution is arranged in the whole spectral range from the purple light to the infrared light, make the intensity of illumination that enters CCD can be because the interference wavelength of optical filter be different difference to some extent.
(4) spectral signature combines with characteristics of image
Spectrum picture machine is as calculated handled the back and is extracted its spectral signature and characteristics of image, and with database in normative reference compare analysis, under the situation of comprehensive both comparative results, draw the discriminating conclusion at last.
Description of drawings
Fig. 1 is traditional Chinese Painting identification device synoptic diagram reflective in the embodiment.
Fig. 2 is that the traditional Chinese Painting of transmission-type in the embodiment is measured and the identification device synoptic diagram.
Fig. 3 is that reflection is measured and the identification device synoptic diagram with the traditional Chinese Painting of transmission use in conjunction in the embodiment.
Embodiment
Below in conjunction with embodiment and accompanying drawing enforcement of the present utility model is described in further detail, but protection of the present utility model and enforcement are not limited thereto.
As an example, reflective traditional Chinese Painting identification device can be divided into image capture module and graphical analysis and identification module as shown in Figure 1.Wherein comprise in the image capture module stabilized light source that the obturator that shields extraneous unknown light source, the inner broadband of device are controlled and formed by CCD, camera lens and optical filter, be partially embedded into the image-taking system in the obturator, with link to each other with CCD, the spectrum picture that is used for the different-waveband that will collect dumps to the image pick-up card of computing machine; Graphical analysis and identification module then are made up of computing machine, database and display, and wherein computing machine links to each other with database and display, realize calling the function that database is analyzed comparison and output demonstration.In addition, computing machine also joins with image-taking system, realizes the control to scanning wavelength.
The performing step of reflective discrimination method is as follows:
At first traditional Chinese Painting to be identified is lain in the airtight device, because the light that outside unknown light source sends can't see through device and be radiated on the traditional Chinese Painting, therefore do not provide light source in device inside, and under the situation of the ground unrest that the unknown light source that do not come from the outside produces, traditional Chinese Painting is in the dark environment, and the image that CCD collects should be as dark as a stack of black cats, and image is more black does not more have an image, ground unrest is just more little, just more is conducive to improve the signal to noise ratio (S/N ratio) of scanning output.
Then by the controlled stabilized light source in the broadband that is installed in obturator inside (namely at visible light spectral power distribution comparatively uniformly being arranged in the near infrared range) as the unique known luminaire in the traditional Chinese Painting image acquisition process, the light that sends from light source is radiated on the traditional Chinese Painting after the uniform diffuse reflection of obturator inwall equably, and reflection enters the spectrum picture that forms a width of cloth width of cloth different-waveband among the CCD.Again since light source have good stability, at purple light the characteristics of more uniform spectral power distribution arranged in the whole spectral range to infrared light, therefore the intensity of illumination of every bit does not fluctuate over time on the spectrum picture that collects, and the intensity of illumination that the spectrogram of different-waveband also can not cause entering CCD because the interference wavelength difference of optical filter changes to some extent, it is an invariable value, this spectral reflectivity for the traditional Chinese Painting surface is rebuild and is provided convenience, and has also reduced the estimation error of unavoidably introducing when spectral reflectivity is rebuild simultaneously.
Simultaneously, in order to obtain waiting to reflect the spectrum picture of traditional Chinese Painting under different wavelengths of light, reflected light also needed to pass through earlier optical filter before entering CCD.Optical filter is a kind of under certain impressed voltage, only allow the light in the special spectrum scope to pass through, and a kind of device that the light that does not allow other wave band passes through, it makes the light wavelength that enters CCD all be in and can see through in the special spectrum scope of light filter, thus the spectrum picture under the formation special spectrum scope.Change and pass through centre wavelength and can change the voltage be applied on the optical filter by computing machine in the scanning process, wavelength of every adjustment is noted the spectrum picture of this wave band, and then set next wave band, till the image acquisition task of finishing all predetermined wavelengths.Owing to the accurate control of computing machine is arranged, makes the spectrum picture of gathering conform to substantially with the wavelength that sets.Because image-taking system does not need to do mechanical the movement in scanning process, avoided in the moving process owing to unnecessary error is introduced in the vibrations of image-taking system again.
The spectrum picture that obtains in CCD dumps in the computing machine by image pick-up card, after pre-service such as denoising, foreground extraction, compares identification from spectral signature and two aspects of characteristics of image respectively.Wherein the identification of spectral signature can relatively carrying out by unique point polishing wax curve.The curve of spectrum is that the reflectivity arrangement of same check point under a plurality of different-waveband illumination are penetrated formed, the position of unique points such as the trend of its curve and crest, trough can be reacted the chemical characteristic of this point to a certain extent, when analyzing the discriminating material, play an important role, and the pixel response value of spectral reflectivity and CCD has close relationship, can rebuild the spectral reflectivity of traditional Chinese Painting by the output valve of CCD.The pixel response value of CCD during as the spectral response value of this central wavelength, the pixel response value of CCD can be expressed as
C
k=I
R(λ
k)R(λ
k)T(λ
k)F
k(λ
k)α(λ
k)+n
k (k = 1，2，…)
C in the formula
kExpression CCD is at the output valve of k wavelength channel, I
R(λ
k) be the spectral power distribution of light source, R (λ
k) be the spectral reflectivity on traditional Chinese Painting surface, T (λ
k) be the spectral transmittance of camera lens, F
k(λ
k) be the spectral transmittance of k wavelength channel of optical filter, α (λ
k) be the relative spectral response of CCD, n
kIt is the additive noise of k wavelength channel.
Spectral transmittance T (the λ of camera lens wherein
k), the spectral transmittance F of optical filter
k(λ
k) and the spectral response α (λ of CCD
k) after demarcating, all be fixed value, can record by experiment; And additive noise n
kCan remove by eliminating methods such as dark current, relative radiometric calibration processing; Again because measuring process is to carry out the spectral power distribution I of light source under the controlled illumination condition of strictness
R(λ
k) can be obtained by experiment equally.Therefore the spectral reflectivity on traditional Chinese Painting surface can be by formula
Try to achieve, and then can obtain the curve of spectrum on the traditional Chinese Painting unique point, by comparing with the curve of spectrum of the true traditional Chinese Painting that records in advance in the database, the size of difference is as an important evidence of true and false judgement again.The identification of characteristics of image then need be at computing machine auxiliary, earlier the gained spectrum picture is carried out pre-service, to be used as noise filtering with the irrelevant content of feature to be extracted, and the content that China ink, pigment, seal, signature and rice paper etc. are to be identified for image information as far as possible intactly remain; Extract features such as color, texture, edge, shape the image after handling then, and compare with the reservation standard in the database, with the comparative result of gained as the foundation of differentiating.The standard of wherein reserving can use the same method and extract from the authentic work of being approved, and pre-deposits in the database.
The comparative result of last comprehensive spectral characteristic and picture characteristics, treating the true and false of mirror traditional Chinese Painting enters a judgement, avoided only doing spectral analysis or only made the one-sidedness that image is identified, it all is quick, efficient, undamaged method that spectral analysis simultaneously and image are handled, the influence for the treatment of the mirror traditional Chinese Painting is very little, is the ideal tools of traditional Chinese Painting being carried out true and false analysis and discriminating.
The traditional Chinese Painting measurement of transmission-type and identification device are as shown in Figure 2, it is two-layer up and down that it and reflective measurement and identification device difference place are that obturator is divided into, middle dividing plate has whole-permeable to the light in the measure spectrum scope, make the light of any wavelength in the measurement range that equal variation be arranged when passing dividing plate, avoided the spectrum picture of subband is done unnecessary correction; Dividing plate plays a part to fix and put traditional Chinese Painting as the platform on obturator upper strata simultaneously.In addition, the below of traditional Chinese Painting is also transferred in the position of light source from the top of script traditional Chinese Painting, and the light that light source sends sees through traditional Chinese Painting itself through even diffusion back and enters among the CCD, and resulting spectrogram reflects is the transmissison characteristic of traditional Chinese Painting and no longer be reflection characteristic.Then by analyzing resulting spectrogram among the CCD, the curve of spectrum on the extract minutiae, can obtain China ink, pigment and ink paste and permeate transmissison characteristic in rice paper, and compare with the traditional Chinese Painting genuine piece measured value deposited in advance in the database, the true and false of traditional Chinese Painting is entered a judgement.
The traditional Chinese Painting measurement of reflection and transmission use in conjunction and identification device are as shown in Figure 3, its obturator is identical with transmission-type, all has double-decker, and central dividing plate all is the characteristics that the light in the measurement range had whole-permeable, difference is that the position of light source transfers to the upper strata by lower floor, and lower floor has embedded an image-taking system of being made up of optical filter, camera lens and CCD.The light that the upper strata light source sends is radiated on the traditional Chinese Painting equably, a part enters among the CCD on upper strata through reflection, another part sees through traditional Chinese Painting and enters among the CCD of lower floor, the spectrogram that forms in two CCD all dumps to extraction and the analysis of carrying out spectral signature and characteristics of image in the computing machine by the image pick-up card that is attached thereto, and compare with the reference quantity in the database, determine identification result jointly.
These three kinds of measurements and discrimination method all have high spectral resolution, collection of illustrative plates unification and the many characteristics of spectral band of light spectrum image-forming technology.They can be divided into a plurality of narrow wave bands with spectrum in the measure spectrum scope, be implemented in purple light to the interior continuous imaging of this spectral range of infrared light.And resulting spectrogram has had the high-resolution plane picture of two dimension on the one hand, show as traditional Chinese Painting space distribution image feature, can be used for analysis and the identification of characteristics of image; Have the spectrum dimension on the other hand, but be about to spectrogram by the wave band order composing images cube that coincides, if be target with wherein a certain pixel or pixel group, wavelength as independent variable, can make the curve of spectrum of this pixel or pixel group, thereby obtain their spectral signature.Owing to having reflected incident light energy percentage after reflection or transmission truly, these curves of spectrum can identify the material in this pixel to a certain extent with the wavelength change rule again.
Claims (6)
1. based on the traditional Chinese Painting true and false identification device of light spectrum image-forming technology, it is characterized in that comprising image capture module, described image capture module comprises the controlled stabilized light source in obturator, the broadband that can shield extraneous unknown light source and have the uniform diffuse reflection characteristic, by CCD, camera lens and the optical filter image-taking system of forming and the image pick-up card that links to each other with CCD; The controlled stabilized light source in described broadband is arranged in described obturator, for generation of the light of different-waveband and shine traditional Chinese Painting to be identified; Described image-taking system is used for receiving the light of crossing traditional Chinese Painting to be identified through light or the transmission of traditional Chinese Painting reflection to be identified and carrying out imaging, described image pick-up card is used for gathering the spectrum picture of the different-waveband after the image-taking system imaging and dumping to computing machine, described computing machine also joins with image-taking system, obtains monochromatic light imaging in CCD by the optical filter in the control Image Acquisition system.
2. the traditional Chinese Painting true and false identification device based on the light spectrum image-forming technology according to claim 1, it is characterized in that also comprising display and described computing machine, computing machine is used for calling database to be analyzed relatively and with identification result and exports display to, and described database is used for spectral signature and the characteristics of image of the known traditional Chinese Painting authentic work of storage and traditional Chinese Painting to be identified.
3. the traditional Chinese Painting true and false identification device based on the light spectrum image-forming technology according to claim 1 is characterized in that the same side that stabilized light source that described broadband is controlled and image-taking system are positioned at traditional Chinese Painting to be identified and all towards the front of traditional Chinese Painting to be identified.
4. the traditional Chinese Painting true and false identification device based on the light spectrum image-forming technology according to claim 1 is characterized in that the both sides that stabilized light source that described broadband is controlled and image-taking system lay respectively at traditional Chinese Painting to be identified.
5. the traditional Chinese Painting true and false identification device based on the light spectrum image-forming technology according to claim 1 is characterized in that optical filter, CCD, the camera lens in the described image-taking system is arranged in turn.
6. the traditional Chinese Painting true and false identification device based on the light spectrum image-forming technology according to claim 1, it is characterized in that having two described image-taking systems and two image pick-up cards, and two image-taking systems lay respectively at the both sides of traditional Chinese Painting to be identified, and each image-taking system all is connected with described computing machine by an image pick-up card.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104459077A (en) * | 2014-12-11 | 2015-03-25 | 中科弘华(北京)文化发展有限公司 | Method for identifying authenticity of black paint ancient bronze mirror according to composition and phase characteristics |
| CN108593567A (en) * | 2018-05-02 | 2018-09-28 | 江南大学 | Food quality detection method based on smart mobile phone and system |
| CN109214302A (en) * | 2018-08-13 | 2019-01-15 | 湖南志东科技有限公司 | One kind being based on multispectral substance identification |
| CN112525833A (en) * | 2020-12-18 | 2021-03-19 | 重庆连芯光电技术研究院有限公司 | Multispectral cultural relic imaging device and method based on low-light detector |
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- 2013-03-04 CN CN 201320098539 patent/CN203178183U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104459077A (en) * | 2014-12-11 | 2015-03-25 | 中科弘华(北京)文化发展有限公司 | Method for identifying authenticity of black paint ancient bronze mirror according to composition and phase characteristics |
| CN108593567A (en) * | 2018-05-02 | 2018-09-28 | 江南大学 | Food quality detection method based on smart mobile phone and system |
| CN109214302A (en) * | 2018-08-13 | 2019-01-15 | 湖南志东科技有限公司 | One kind being based on multispectral substance identification |
| CN112525833A (en) * | 2020-12-18 | 2021-03-19 | 重庆连芯光电技术研究院有限公司 | Multispectral cultural relic imaging device and method based on low-light detector |
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