CN103745084A - Chinese medicine tongue color perception quantification method based on psychophysical test - Google Patents
Chinese medicine tongue color perception quantification method based on psychophysical test Download PDFInfo
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Abstract
The invention relates to a Chinese medicine tongue color perception quantification method based on a psychophysical test and belongs to the objective study field of Chinese medicine observation. In the color domain of the tongue color, part of representative tongue color blocks are taken as the perception stimulation quantity values. The description rule of sorts of tongue colors of Chinese medicine tongue diagnosis is used as the psychological perception remark guide accordance, the psychophysical test is performed, a psychophysical perception equidistance scale is established and the tongue color psychological perception quantity is determined. By means of a mathematic relation model between the tongue color physical quantity value and the psychological perception quantity values, the psychological perception quantity values conforming to the Chinese medicine tongue color cognitive rule and corresponding to the tongue color physical quantity are obtained. In the modeling process, firstly, the function relation between the single-dimension physical quantity and the perception quantity is determined and a function model between the comprehensive physical quantity and the perception quantity is constructed according to the function relation. The Chinese medicine tongue color perception quantification method based on the psychophysical test aims at achieving tongue color single-dimension perception quantification conforming to description customs of Chinese medicine tongue diagnosis and the aim of tongue color quantification description authentically combining with the Chinese medicine is achieved.
Description
Technical field
The invention belongs to the research field that objectifies of tcm inspection, particularly tongue color quantizing field in tcm inspection, for realizing the tongue color quantification that changes and meet traditional Chinese medical science cognitive law with illness.
Background technology
Evolution of Tongue Inspection of TCM is to change by observing tongue picture the examination method of understanding human body physiological function and pathological change, in tcm clinical practice diagnosis, plays an important role.Traditional lingual diagnosis method depends on visualization and the language description of the traditional Chinese medical science, lacks quantificational description index and objective record means, to Evolution of Tongue Inspection of TCM description and classification aspect, has brought difficulty.Along with modern science and technology means are in the development aspect Evolution of Tongue Inspection of TCM, lingual diagnosis objectifies, standardized research has become the important developing direction of Evolution of Tongue Inspection of TCM.
In the processing research objectifying in tongue color, general Applied Digital image processes and mode identification technology is carried out tongue color analysis.Under this pattern, each tongue color all must be at the multiple representation in components of certain color space, and then provide category attribute, still lack a kind of one-dimensional quantification manner that changes and meet the cognitive custom of the traditional Chinese medical science with illness, and traditional Chinese medical science tongue color is carried out to quantitative measurement.Therefore set up tongue color and change one-dimensional quantificational description means, and the relation of definite color space component and the quantification of tongue color one-dimensional there is objective necessity.
Summary of the invention
In order to realize tongue color, in the traditional Chinese medical science, the quantification in rule dimension is described, need by human eye, to tongue color, the psychological response under this Changing Pattern quantize, and psychophysics is exactly the subject quantizing for human perception.Subject---the colorimetry that this subjective feeling of color is measured is also to develop by the vision matching experiment of observer in psychophysics.Because the mankind have subjectivity and otherness to the perception of physical stimulation, the process that perception is quantized is subject to the impact of the many factors such as sensation, psychology, therefore often by the multiple normal subjectses' of statistics sensory data, obtain having certain quantificational description standard of generally acknowledging degree.
The present invention has adopted visual psychology physics method targetedly, solves tongue color and describes the quantification problem in rule dimension in the traditional Chinese medical science.Because the perception of traditional Chinese medical science tongue color quantizes to have equal unit at the each several part of quantized directions, therefore select interval scale method to realize tongue color and quantize, finally by mathematical modeling, obtain the relation of tongue color physical quantity and Chinese medicine tongue look psychological response amount.
Concrete scheme design of the present invention is as follows: in tongue color gamut range, take out the representational tongue color color block of part, as perceptible stimulus value.With the description rule of tongue color type in Evolution of Tongue Inspection of TCM, as psychological response, foundation is instructed in evaluation, carries out psychophysical testing, sets up psychological response interval scale, determines tongue color psychological response amount.By building the numerical relationship model between tongue color magnitude of physical quantity and psychological response value, obtain the psychological response value that meets traditional Chinese medical science tongue color cognitive law corresponding to tongue color physical quantity.In modeling process, first determine the funtcional relationship of one-dimensional physical quantity and perception amount, build on this basis the function model between comprehensive physical amount and perception amount.The feature of this invention is intended to realize the tongue color one-dimensional perception quantification that meets Evolution of Tongue Inspection of TCM description custom, reaches the really tongue color quantitative description object in conjunction with the traditional Chinese medical science.In turn include the following steps:
1. determining of tongue color territory:
(1), gather all kinds of Chinese medicine tongue colour standard image patterns (with standard sRGB spatial description), need to comprise light red, light white, red, deep red, purple blue or green all kinds of use-cases, totally 5 classes; Every class use-case need to comprise the above example of 100 example, and under being provided by more than three traditional Chinese medical doctor, type is demarcated.
(2), extract the color magnitude of physical quantity of tongue nature part in all image patterns, and be converted into the HSI color space corresponding with Human Perception; Distribution range according to all tongue colors at H, S, I component, to both sides expansion 1%, determines the interval of tongue color territory on H, S, I component respectively.
2. the relation of tongue color magnitude of physical quantity simple component and psychological response amount is determined:
Because tongue color magnitude of physical quantity generally comprises 3 components, the relation of itself and psychological response amount is also the result of the psychological response combined action that produces of each component, therefore first determine the relation of tongue color magnitude of physical quantity simple component and psychological response amount, to more effectively build on this basis the relational model of tongue color multidimensional magnitude of physical quantity and psychological response amount.Concrete grammar is: two components in fixing H, S, I, utilize psychophysical testing, and study the relation of another component variation and psychological response amount.
(1), within the scope of tongue color under simple component situation of change, the determining of physical stimulation amount: in fixed tongue color distribution range, carry out even subregion sampling, for example, carry out respectively point samplings such as 12 within the scope of H, S, I component.Choose the wherein central point of two points of weight ranges, as component fixed value, making another component is different sampling point value, only changes single component and is combined into respectively different colours piece, obtains the tongue color quantity of stimulus that simple component changes.The tongue color quantity of stimulus HSI value obtaining is converted to displayable sRGB value, with the form of image color lump, is presented on display, allow observer's observe and decide, carry out psychophysical testing.
(2), psychophysical testing, set up interval scale: according to the description rule of tongue color type in Diagnostics of Chinese Medicine, using tongue color according to light white, light red, red deep red, purple blue or green gradual change order the evaluation foundation as psychological response amount, instruct observer to compare judgement.
First by pairs relatively or the method such as hierarchical arrangement, tongue color simple component being changed by multiple observers stimulates and judge sequence, set up simple component variation tongue color quantity of stimulus perception sequentially.Perception serial number is rating, and multiple observers are in addition average to the grade of same stimulation evaluation, thereby obtains the average rank separately of each stimulation.Calculate probable value corresponding to each average rank under normal distribution, then calculate Z score according to POZ conversion table, can obtain the interval scale of the psychological response amount composition of each stimulation.
(3), by mathematical modeling, obtain simple component and change tongue color and stimulate and the funtcional relationship of psychological response quantitative change.
Stimulate each simple component to change (H, S, I) as independent variable tongue color, psychological response amount, as dependent variable, adopts least square method to carry out curve fitting, and determines the matched curve funtcional relationship between each component variation and psychological response amount.
3. the relation of tongue color magnitude of physical quantity and psychological response amount is determined:
(1), within the scope of tongue color under the comprehensive situation of change of many components, the determining of physical stimulation amount: in fixed tongue color distribution range, carry out even subregion sampling.Three-component is combined into respectively different colours piece, obtains the comprehensive tongue color quantity of stimulus changing.The tongue color quantity of stimulus HSI value obtaining is converted to displayable sRGB value, with the form of image color lump, is presented on display, allow observer's observe and decide, carry out psychophysical testing.
(2), psychophysical testing, set up interval scale: concrete grammar step is identical with (2) in the relation of tongue color magnitude of physical quantity simple component and the psychological response amount " determine ".
(3), by mathematical modeling, obtain the funtcional relationship of tongue color magnitude of physical quantity and psychological response amount.
Stimulate physical quantity (H, S, I) as independent variable tongue color, psychological response amount, as dependent variable, adopts polynomial regression model to set up both funtcional relationships.Wherein, the number of times of the each component of physical quantity changes tongue color according to simple component stimulates with the funtcional relationship of psychological response quantitative change definite.For example, if the fitting function of H component and psychological response amount is quadratic function, in multinomial model, H component adopts quadratic term.The selection of each component cross term, low order item, carries out preferably according to regression accuracy, form and the parameter of final certain polynomial regression model.
(4), Chinese medicine tongue color sensation is known quantification.
Extract and need the tongue color rgb value that quantizes in tongue image, and be converted into HSI value, the polynomial regression model of substitution tongue color magnitude of physical quantity and psychological response amount, can obtain the perception quantized result of this tongue color.
Beneficial effect
This method can be by the description rule of Diagnostics of Chinese Medicine tongue color type, and the one-dimensional perception that realizes tongue color in lingual diagnosis quantizes, and by tongue color pixel value in tongue image, obtains an one-dimensional value, and the size of its quantity represents the degree of tongue color in lingual diagnosis gradual change rule.First this method determines traditional Chinese medical science tongue color gamut range according to normal tongue and illness tongue sample, within the scope of this, according to human eye vision aware space uniform sampling, obtains tongue color physical stimulation amount; According to traditional Chinese medical science hierarchical categories order, by observer, tongue color is stimulated to sequence, calculate interval scale, each tongue color stimulates corresponding psychological response value; By mathematical modeling, obtain the funtcional relationship of tongue color magnitude of physical quantity and psychological response amount, thereby to arbitrary tongue color, can obtain the psychological response amount in the cognitive dimension of its corresponding traditional Chinese medical science.
In Traditional Chinese Medicine lingual diagnosis, to the description of tongue color, be qualitatively, use its affiliated traditional Chinese medical science tongue color classification of text description.Generally comprise light white, light red, red, deep red, purple blue or green.Due to ambiguity and the subjective differences of text description, bring inconvenience to traditional Chinese medical science analysis of cases, data mining, therapeutic evaluation, hindered further developing of Diagnostics of Chinese Medicine.In recent years, adopt standard image data or chroma data to describe tongue color, the beginning that becomes tongue color and describe away vectorization.Although these are described means and adopt numerical quantization form, and have relatively uniform standard, cognitive law tongue color being changed with the traditional Chinese medical science cannot well merge.At the even more high-dimensional image of three-dimensional or chroma data, describe space, a color is described by multiple numerical value.Due to the combined influence of multiple passages, be difficult to judge intuitively the attribute change (partially red, partially light) that tongue color data variation is brought, and attribute change degree is just more difficult to tolerance, this collection and analysis to traditional Chinese medical science diagnostic message is very disadvantageous.In tcm diagnosis analysis of cases research, for the statistical study of tongue color feature also often because the restriction of multidimensional quantificational description can only carry out statistical study from each dimension, and this statistics often can not obtain real valuable result.The tongue color scope of statistics of for example certain illness is R ∈ [*, *], G ∈ [*, *], B ∈ [*, *], and in fact in this scope, some combined colors is not the tongue color of this illness.
Adopt this method, can describe rule for traditional Chinese medical science tongue color, light white, light red, red, deep red, purple blue or green order is set up value number axis.As shown in accompanying drawing 5,6, arbitrary tongue color can, by the funtcional relationship of setting up, draw the value on this number axis.Thus, can with one dimension value simple, intuitive describe tongue color attribute and depart from the degree of certain reference color.And in the statistical study of tongue color diagnostic message, also can represent with the scope on this one dimension value number axis, value probability of occurrence etc.This description means, combine quantificational description with traditional Chinese medical science cognitive law, broken through current employing multidimensional color space and describe the limitation of tongue color, have realized Chinese medicine tongue look quantization means truly.For disease degree, development trend, provide quantitative foundation, be conducive to promote the lingual diagnosis research that objectifies.
Accompanying drawing explanation
Fig. 1: Chinese medicine tongue color sensation is known quantization method flow process
Fig. 2: tongue color HSI color distribution histogram example
Fig. 3: POZ conversion method flow process
Fig. 4: H component variation tongue color stimulates and psychological response magnitude relation composes curve example
Fig. 5: Chinese medicine tongue color sensation is known quantized result data instance
Fig. 6: Chinese medicine tongue color sensation is known quantized result color lump example
Embodiment
The psychophysical testing relating in this method is all to carry out under dark room conditions, by a light-emitting diode display through color correction, is shown and is stimulated color lump, and 10 observers above with normal colour vision are carried out to psychophysical testing.Specific implementation process is as follows:
1. determining of tongue color territory:
(1), gather all kinds of Chinese medicine tongue colour standard images.Need to comprise light red, light white, red, deep red, purple blue or green all kinds of use-cases, totally 5 classes; Every class use-case need to comprise the above example of 100 example, and under being provided by more than three traditional Chinese medical doctor, type is demarcated.Image acquisition need adopt white balance and exposure setting accurately, with the color space of determining, and as sRGB space, output image data, the standardization of assurance view data.
(2), extract the color magnitude of physical quantity of tongue nature part in all image patterns, and be converted into the HSI color space corresponding with Human Perception; Add up the HIS value of all tongue colors, determine the distribution range of tongue color at H, S, I component, to both sides expansion 1%, determine the interval of tongue color territory on H, S, I component respectively.Accompanying drawing 2 is the distribution histogram of tongue color on H, S, I component.
2. the relation of tongue color magnitude of physical quantity simple component and psychological response amount is determined:
Two components in fixing H, S, I, utilize psychophysical testing, study the relation of another component variation and psychological response amount.
(1), within the scope of tongue color under simple component situation of change, the determining of physical stimulation amount: in fixed tongue color distribution range, carry out even subregion sampling, for example, carry out respectively point samplings such as 12 within the scope of H, S, I component.
Fixing S, I component, H component variation produces colour stimulus: get the central point of S, I component tongue color scope as fixed value, H divides 12 grades in weight range to divide sampling, obtains changing one group of colour stimulus amount of H component;
Equally, fixing I, H component, S component variation produces colour stimulus; Fixing H, S component, I component changes generation colour stimulus.
The tongue color quantity of stimulus HSI value obtaining is converted to displayable sRGB value, with the form of image color lump, is presented on display and (generally under the grey background of neutrality, shows), allow observer carry out observe and decide, carry out psychophysical testing.
(2), psychophysical testing, set up interval scale: according to the description rule of tongue color type in Diagnostics of Chinese Medicine, using tongue color according to light white, light red, red deep red, purple blue or green gradual change order the evaluation foundation as psychological response amount, instruct observer to compare judgement.
Flow process is referring to accompanying drawing 3.First by pairs relatively or the method such as hierarchical arrangement, tongue color simple component being changed by multiple observers stimulates and judge sequence, set up simple component variation tongue color quantity of stimulus perception sequentially.Wherein, be relatively that tongue color quantity of stimulus is combined in pairs in pairs, show and present to observer, allow observer select to be wherein more partial to the sequentially color lump of a side of gradual change, then add up multiple observers' comparative result, obtain perception order.And hierarchical arrangement is that all tongue color quantity of stimulus are presented to observer simultaneously, allow observer arrange by gradual change order, obtain perception order.Perception serial number is observer to the rating stimulating.For convenience of description, table 2 take 5 observers to 4 tongue color sorting datas as example, introduce interval scale process of establishing.
1. multiple observers are in addition average to the grade of same stimulation evaluation, thus obtain the average rank separately of each stimulation, be designated as MR
i.
Wherein, n is that tongue color stimulates quantity, and N is observer's quantity, Q
ijfor the rating of observer j to tongue color stimulation i.
In table 2 example, n=4, N=5, in table, numerical value is rating Q.Calculate each tongue color by the mean value of 5 observers grading, i.e. every column average in table, obtains the average rank MR of this tongue color.The average rank MR of tongue color 1 in this example
1=3.
2. calculate the average mark Mc that selects
i.
Mc
i=n-MR
i （i=1,2,…n）
In table 2 example, n=4, the therefore average selection mark Mc of tongue color 1
1=4-MR
1=1.
3. calculate the average mark Mc that selects to adjust
i'.
Mc′
i=Mc
i+0.5 （i=1,2,…n）
In table 2 example, mark Mc is adjusted in the average selection of tongue color 1
1'=Mc
1+ 0.5=1.5.
4. calculate the average percentage P that selects to adjust mark
i';
In table 2 example, the percentage P of mark is adjusted in the average selection of tongue color 1
1'=Mc
1'/4=0.375
5. by statistical POZ look-up table by probability P
i' be converted into criterion score z
i';
P′
i→z′
i （i=1,2,…n）
6. by z
i' eliminate negative value, add z
i' middle minimum negative value, obtain final interval scale value V
i.
V
i=z′
i+|z′
min| （i=1,2,…n）
V
ibe the psychological response amount of each stimulation.
Table 1: interval scale Establishing process breviary example
(3), by mathematical modeling, obtain the funtcional relationship of tongue color list physical components and psychological response quantitative change.
Stimulate each simple component to change (H, S, I) as independent variable tongue color, psychological response amount, as dependent variable, adopts least square method to carry out curve fitting, and determines the matched curve funtcional relationship between each component variation and psychological response amount.Accompanying drawing 4, for H component variation tongue color stimulates and psychological response magnitude relation segmentation composes curve, this curve is quafric curve.
2. the relation of tongue color magnitude of physical quantity and psychological response amount is determined:
(1), within the scope of tongue color under the comprehensive situation of change of many components, the determining of physical stimulation amount: in fixed tongue color distribution range, carry out even subregion sampling.Three-component is combined into respectively different colours piece, obtains the comprehensive tongue color quantity of stimulus changing.As each component 4 grades, divide sampling, can obtain 125 quantity of stimulus combinations.The tongue color quantity of stimulus HSI value obtaining is converted to displayable sRGB value, with the form of image color lump, is presented on display, allow observer's observe and decide, carry out psychophysical testing.
(2), psychophysical testing, set up interval scale: concrete grammar step is identical with (2) in the relation of tongue color magnitude of physical quantity simple component and the psychological response amount " determine ".
(3), by mathematical modeling, obtain the funtcional relationship of tongue color magnitude of physical quantity and psychological response amount.
Stimulate physical quantity (H, S, I) as independent variable tongue color, psychological response amount, as dependent variable, adopts polynomial regression model to set up both funtcional relationships.Wherein, the number of times of the each component of physical quantity changes tongue color according to simple component stimulates with the funtcional relationship of psychological response quantitative change definite.For example, if the fitting function of H component and psychological response amount is quadratic function, in multinomial model, H component adopts quadratic term.Selection and the combination of each component cross term, low order item, carry out preferably certain polynomial regression model form and parameter according to regression accuracy.
(4), Chinese medicine tongue color sensation is known quantification.
Extract and need the tongue color rgb value that quantizes in tongue image, and be converted into HSI value, the polynomial regression model of substitution tongue color magnitude of physical quantity and psychological response amount, can obtain the perception quantized result of this tongue color.
Claims (1)
1. the Chinese medicine tongue color sensation based on psychophysical testing is known quantization method, it is characterized in that in turn including the following steps:
1) determining of tongue color territory:
(1), gather all kinds of Chinese medicine tongue colour standard image patterns, need to comprise light red, light white, red, deep red, purple blue or green all kinds of use-cases, totally 5 classes; Every class use-case need to comprise the above example of 100 example, and under being provided by more than three traditional Chinese medical doctor, type is demarcated;
(2), extract the color magnitude of physical quantity of tongue nature part in all image patterns, and be converted into the HSI color space corresponding with Human Perception; Distribution range according to all tongue colors at H, S, I component, to both sides expansion 1%, determines the interval of tongue color territory on H, S, I component respectively;
2) relation of tongue color magnitude of physical quantity simple component and psychological response amount is determined:
Two components in fixing H, S, I, utilize psychophysical testing, study the relation of another component variation and psychological response amount;
(2.1), within the scope of tongue color under simple component situation of change, the determining of physical stimulation amount: in fixed tongue color distribution range, carry out even subregion sampling; Choose the wherein central point of two points of weight ranges, as component fixed value, making another component is different sampling point value, only changes single component and is combined into respectively different colours piece, obtains the tongue color quantity of stimulus that simple component changes; The tongue color quantity of stimulus HSI value obtaining is converted to displayable sRGB value, with the form of image color lump, is presented on display, allow observer's observe and decide, carry out psychophysical testing;
(2.2), psychophysical testing, set up interval scale: according to the description rule of tongue color type in Diagnostics of Chinese Medicine, using tongue color according to light white, light red, red, deep red, purple blue or green gradual change order the evaluation foundation as psychological response amount, instruct observer to compare judgement;
First by pairs relatively or the method such as hierarchical arrangement, tongue color simple component being changed by multiple observers stimulates and judge sequence, set up simple component variation tongue color quantity of stimulus perception sequentially; Perception serial number is rating, and multiple observers are in addition average to the grade of same stimulation evaluation, thereby obtains the average rank separately of each stimulation; Calculate probable value corresponding to each average rank under normal distribution, then calculate Z score according to POZ conversion table, obtain the interval scale of the psychological response amount composition of each stimulation;
(2.3), by mathematical modeling, obtain simple component and change tongue color and stimulate and the funtcional relationship of psychological response quantitative change;
Stimulate each simple component to change (H, S, I) as independent variable tongue color, psychological response amount, as dependent variable, adopts least square method to carry out curve fitting, and determines the matched curve funtcional relationship between each component variation and psychological response amount;
3) relation of tongue color magnitude of physical quantity and psychological response amount is determined:
(1), within the scope of tongue color under the comprehensive situation of change of many components, the determining of physical stimulation amount: in fixed tongue color distribution range, carry out even subregion sampling; Three-component is combined into respectively different colours piece, obtains the comprehensive tongue color quantity of stimulus changing; The tongue color quantity of stimulus HSI value obtaining is converted to displayable sRGB value, with the form of image color lump, is presented on display, allow observer's observe and decide, carry out psychophysical testing;
(2), psychophysical testing, set up interval scale: concrete grammar step is identical with (2.2) in the relation of tongue color magnitude of physical quantity simple component and the psychological response amount " determine ";
(3), by mathematical modeling, obtain the funtcional relationship of tongue color magnitude of physical quantity and psychological response amount;
Stimulate physical quantity (H, S, I) as independent variable tongue color, psychological response amount, as dependent variable, adopts polynomial regression model to set up both funtcional relationships; Wherein, the number of times of the each component of physical quantity changes tongue color according to simple component stimulates with the funtcional relationship of psychological response quantitative change definite; For example, if the fitting function of H component and psychological response amount is quadratic function, in multinomial model, H component adopts quadratic term; The selection of each component cross term, low order item, carries out preferably according to regression accuracy, form and the parameter of final certain polynomial regression model;
(4), Chinese medicine tongue color sensation is known quantification;
Extract and need the tongue color rgb value that quantizes in tongue image, and be converted into HSI value, the polynomial regression model of substitution tongue color magnitude of physical quantity and psychological response amount, obtains the perception quantized result of this tongue color.
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| CN112259240A (en) * | 2020-10-23 | 2021-01-22 | 武汉未康未病医学有限公司 | Tongue diagnosis cold-heat deficiency-excess mathematical model |
| CN113625877A (en) * | 2021-08-16 | 2021-11-09 | 扬州大学 | Force and touch subjective perception result quantitative description method based on perception space analysis |
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