JPH10165375A - Diagnostic system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely diagnose a patient by quantitatively determining objective biological information which is obtained from the skin color such as complexion without affected by the reproducibility of image color of a display. SOLUTION: In a remote diagnosis of a patient, besides color image data for the face used for understanding the general conditions of the patient, respective parameters precisely expressing the biological conditions are found by being arithmetically processed in an image memory data processing part 9 using color data of the face, which is stored by converted into numerical values by a digital camera in photographing the face, without affected by the ununiformity of reproduction characteristics of the skin color of the face. These parameters are displayed as physical quantities along with the color image data of the face so that a doctor can quantitatively, accurately, and efficiently diagnose the patient without affected by the color error in reproducing an image color.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a diagnostic system such as a complexion diagnostic system for performing various medical diagnoses from a human face image.

[0002]

2. Description of the Related Art A person becomes flushed when his blood pressure becomes high such as in an excited state, sweats when he is hot, and turns pale when his blood pressure is low, and his face color changes variously depending on his psychological and physiological states. Conversely, it is possible to infer the psychological state and physiological state from the person's complexion. For example, books related to dermatology describe the psychological state and physiological state of the general color of the skin, and also describe the measurement of the level of erythema.

[0003] In recent years, a technique has been developed in which such a change in complexion is measured in a non-contact manner using a spectral image technique, and a mental state or a physiological state of a person is regarded as a change in a spectral image.
For example, blood distribution, perspiration distribution, temperature distribution, and the like can be measured from a spectral image obtained using an imaging system such as a CCD camera, an infrared vidicon, and a thermal camera. In addition, the spectral reflectance measuring device as a color diagnostic device, a glass fiber probe is brought into contact with the skin,
The oxygen saturation of the blood in the skin can be measured. Further, there is a two-dimensional colorimeter that performs an operation between three wavelengths in the visible region and displays a color space of psychophysical quantities.

[0004] As an example of such a measurement technique to which a communication technique is added, there is, for example, remote medical diagnosis. For example, there is a photographing and electronic transmission system in which an image such as a state of a patient in an ambulance or a state of trauma is sent to a hospital side in advance during transportation of a patient to prepare for an appropriate treatment. In such a telemedicine diagnosis, a doctor does not always give a diagnosis guidance in front of the patient and cannot give a comprehensive understanding of the patient, but the photograph of the patient's whole body and facial photograph information are not available. , It is a very useful source of information for the consulting physician. Face information of such photograph information can read a considerable amount of information from the patient's nutritional status, physiological status, and even mental status, and can be used to determine the patient's overall health status. Is also linked.

[0005]

By the way, color information such as the face of a patient transmitted from an ambulance or the like cannot maintain faithful color reproduction or constant characteristics due to display characteristics and inadequate adjustment. Yes, for example, in remote diagnosis of home medical patients, even if images are transmitted to know the overall state of the patient, when reproducing the image color, the patient's complexion changes slightly subtly and the exact There was a problem that a diagnosis could not be made.

[0006] The present invention solves the above-mentioned conventional problems, and is more accurate by quantifying objective biological information obtained from skin color such as complexion color without being influenced by image color reproduction of a display. An object of the present invention is to provide a diagnostic system capable of making a diagnosis.

[0007]

SUMMARY OF THE INVENTION A diagnostic system according to the present invention is a diagnostic system capable of performing various diagnoses from an image of an object, and a photographing means for capturing the image of the object as image data quantified for each pixel. Transfer means for transferring the image data obtained by the photographing means, calculation means for obtaining predetermined data necessary for various diagnoses from the image data transferred by the transfer means, predetermined data obtained by the calculation means, And display means for displaying image data. In addition, the diagnostic system of the present invention is a diagnostic system capable of performing various diagnoses from an image of an object, an image capturing unit that captures the image of the object as image data quantified for each pixel, and a diagnostic system obtained by the image capturing unit. Calculating means for obtaining predetermined data necessary for various diagnoses from the obtained image data; predetermined data obtained by the calculating means; transfer means for transferring the image data; image data and predetermined data transferred by the transfer means And display means for displaying In short, this calculation means may be at the source or destination. More specifically, the calculating means extracts each wavelength pixel data of the skin portion from each wavelength pixel data of the image data, and calculates an operation between each wavelength from the extracted wavelength pixel data of the skin portion. The apparatus outputs a blood distribution concentration, blood oxygenation level, and / or pigmentation level, which are predetermined data, and outputs an image and a measurement value indicating at least one of the characteristics.The display means displays the image and the measurement value together with the image and the measurement value. The image data is displayed as an image.

[0008] With this configuration, for example, in remote diagnosis of a patient, in addition to image information used to grasp the general condition of the patient, regardless of inconsistency in the reproduction characteristics of skin color such as the face, the photographing means can be used. The color data in the image data captured at the time of photographing the target object is digitized for each pixel, and various parameters accurately indicating, for example, a living body condition are displayed as physical quantities based on the digitized color data. Irrespective of color errors at the time of reproduction, more accurate diagnosis is possible by quantifying objective biological information. Further, if the photographing means is a digital camera, the patient can take a photograph with the same operation as ordinary photographing. For example, if a self-timer is used, a single patient can take a photograph. In addition, by displaying the measured value on the composite image display,
The color reproduction system can be calibrated and the reproduced color can be adjusted, so that the diagnosis can be performed more accurately.

Preferably, the photographing means in the diagnostic system of the present invention photographs an object with light from a light source having a predetermined spectral characteristic.

With this configuration, for example, if a light source such as a strobe flash is used, the spectral characteristics of the light source become known, and if the processing based on the spectral characteristics is performed in the photographing means, the influence of the ambient light on the measurement is reduced. It is possible to reduce the number.

Further, preferably, the imaging light in the diagnostic system of the present invention is an indirect illumination light.

With this configuration, in direct illumination of a light source such as a strobe flash, for example, there is a possibility that a luminance difference is too large to cause halation, so that accurate skin color information cannot be captured and accurate diagnosis becomes difficult. However, if the lighting on the object to be photographed, such as the face, is used as indirect lighting,
More accurate skin color information can be obtained.

Further, preferably, in the diagnostic system of the present invention, the photographing object is provided with a color member indicating a reference color, and the photographing means is provided with a color correcting means for performing color correction using the color member as a color reference. It is characterized by the following.

According to this configuration, if a color member such as a reference white plate as a reference is attached to a chest or the like of a patient to be imaged, it is possible to correct a temporal change of a spectral characteristic of a light source and to correct an influence of an ambient light. The accuracy of is further improved.

Further, preferably, the arithmetic means in the diagnostic system of the present invention is characterized in that images are synthesized so that the photographing background color is uniform.

With this configuration, if the photographing background color is made uniform by image synthesis, for example, a face image can be easily and accurately extracted from the object. The selection is not limited to the normal blue background, but if an appropriate color is selected, the judgment can be made easily in comparison with the skin color, and more accurate diagnosis can be made.

Still preferably, in a diagnostic system according to the present invention, the display means displays the measured value as a color scale.

With this configuration, by displaying the color scale on the composite image display, the measured values are easy to see and the diagnosis can be performed more quickly.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a complexion diagnosis system according to the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a configuration of a complexion diagnosis system according to an embodiment of the present invention.

In FIG. 1, a face color diagnosis system 1 configured to measure biometric information such as a face image of a home medical patient at home and transmit the measured information to a hospital to enable various medical diagnoses from the face image of an object to be photographed. On the home side, a digital camera 2 that captures a patient at home at the time of capturing the image and digitizes the image of the patient at home at the time of the capturing, and is connected to the digital camera 2, and the digital camera 2 forms an imaging unit. A strobe flash 3 serving as a light source for irradiating light having a predetermined spectral characteristic to a face of a home patient as an object to be imaged in synchronization with imaging by the digital camera 2
And a keyboard 4 on which the home patient can input comments and data as needed, and various measuring instruments 5 such as a pulse oximeter, a sphygmomanometer, an electrocardiograph, and a thermometer to which various biometric probes are respectively connected. A home patient bio-information communication unit 7 for transmitting image data as bio-information from the digital camera 2, the keyboard 4 and the measuring instrument 5 to a hospital as a transmission destination via a telephone line 6; On the hospital side, a modem 8 for receiving image data as each piece of biometric information from the home patient biometric information communication unit 7 via the telephone line 6, and a memory (not shown) for storing the image data received by the modem 8 And various types of arithmetic processing of each color data (each wavelength pixel data) of the digitized image data to obtain predetermined data ( Blood concentration distribution in the embodiment, an image memory data processing unit 9 to obtain the blood oxygenation level and pigmentation levels), the image memory data processing section 9
A face image of a patient is displayed using image data held in a memory (not shown) of the present invention, and a face image showing characteristics of predetermined data obtained by performing various arithmetic processing on each color data and a measured value of the face image are displayed. An image monitor unit 10 for split display is provided, and a control unit 11 for controlling the image memory / data processing unit 9 by predetermined software or the like and controlling display of the image monitor unit 10 via the image memory / data processing unit 9 is provided. I have. A personal computer (PC) 12 is constituted by the image memory / data processing unit 9, the image monitor unit 10, and the control unit 11, and a doctor looks at the image monitor unit 10 while input means such as a keyboard (not shown). 3), the monitor information of the image monitor 10 can be controlled.

The digital camera 2 for diagnosing a complexion is constituted by a photographing device, and as shown in FIG. 2, a beam splitter 22 is disposed behind a lens group 21. Behind the beam splitter 22, a visible region is provided. An image sensor 23 such as a CCD (charge transfer device), which is a color image sensor for obtaining a color image, is provided by the number of pixels, and an infrared image sensor for obtaining an image in the near infrared region is provided on one side surface of the beam splitter 22. Imaging device 2 such as CCD (charge transfer device)
4 are provided via the infrared filter 25 by the number of pixels. In the image sensor 23, blue (blue) and green (gre) are emitted from the light 26 that has traveled straight through the beam splitter 22.
en) and red (red) in the visible region, and the image sensor 24 changes the direction in a right angle direction by the beam splitter 22, and outputs the light 2 through the infrared filter 25.
7 to obtain IR image data. That is, the digital camera 2 has an imaging device 24 having sensitivity in the near infrared region in addition to the imaging device 23 for obtaining a color image in order to grasp the circulation state of the patient's face. Also, these blue, green, and red (red)
In order to accurately obtain predetermined data (biological information) required for various diagnoses from color image data in the visible region and image data of a total of four wavelengths of IR image data, it is necessary to suppress the influence of ambient light. It is necessary that the spectral distribution of the illumination light source is known and constant. For this reason, a strobe flash 3 that emits irradiation light having known spectral characteristics in synchronization with shooting is connected to the digital camera 2 for determining a complexion.
Further, in order to suppress halation and obtain accurate biological information, the strobe flash 3 does not directly irradiate the subject with light, but once irradiates a member other than the subject with light and then irradiates the subject with light. It is desirable to use indirect lighting.

The home patient biometric information communication unit 7
Has a communication function of transmitting image data from the digital camera 2 for determining a complexion to a communication destination hospital, in addition to a calculation processing function of other biological information and a display function thereof.

Further, as shown in FIG. 3, the control section 11 of the personal computer (PC) 12 transmits a face image to each color data (each wavelength pixel data) received by the modem 8 and held in the image memory 31. Image distribution function to extract the position of the skin part of the blood, blood distribution concentration information from the color data from the imaging element 23 for obtaining a color image of the skin part of the face and the imaging element 24 having sensitivity in the near infrared region, Level, and a complexion diagnosis calculation function having an algorithm for calculating and deriving each predetermined data (each biological information) necessary for diagnosis, such as the level of a pigmented pigment such as melanin, It is controlled by a recording medium 32 on which software having a composite image creating function of synthesizing biological information and outputting the synthesized image to the image monitor 10 is recorded, so that a comprehensive patient In which objective the biological information quantified from the output data of the digital camera 2 for photographing a face image of interest to know the state is to be obtained.

First, this image extraction function is based on image data quantified for each pixel from the digital camera 2 taken from the home and transmitted from the home camera, for four wavelengths (R,
(G, B, IR) to extract the skin portion of the patient's face image in order to obtain each piece of biological information necessary for various diagnoses. In other words, the image extraction function performs a <R <b, c <G <d, e <with respect to the output corresponding to the three primary colors (R, G, B) in the visible range from the digital camera 2 in the RGB space. B <f (af
(Constant) is set, and only the color data of the skin color portion is extracted. When the RGB space is converted to an HIS space, an L ^* a ^* b ^* space, or the like, a flesh color portion can be extracted using only the hue.

In this way, the skin tone (patient's face)
After extracting the color data, the target part of the patient's face, such as the forehead, the nose and the cheek, is specified from the positional relationship of the face image, and the measured value of each part is calculated by the following calculation function.

Next, this calculation function is based on color data of four wavelengths (R, G, B, IR) for each pixel in the skin portion of the patient's face, and determines the blood concentration, its oxygen saturation, melanin, etc. Each predetermined data (biological information) required for diagnosis, such as the pigmentation level, is calculated.

Here, the structure and coloration of the skin portion will be described. First, the structure in the depth direction of the skin is composed of a stratum corneum and a basal layer whose surface is covered with sebum, as shown in FIG. An epidermis 41, a dermis 43 under which blood vessels 42 and the like are distributed, and a subcutaneous fat 44 in a deeper part thereof.
And a fat layer 45 composed of The epidermis 41 and the dermis 43 have a melanin pigment 46. Next, regarding the coloration of the skin part, undressed bare skin has melanin pigment, blood distribution density, average oxygen saturation of arterial blood and venous blood, bilirubin pigment dissolved in subcutaneous fat and carotene etc. Spectral distribution characteristics based on wavelength-reflectance as shown in FIG. FIG. 6 shows the spectral absorption characteristics of melanin pigments, yellow pigments such as bilirubin pigments and carotene which are dissolved in fats, and oxygen hemoglobin and reduced hemoglobin of blood. As can be seen from FIG. 6, the spectral distribution of the skin shows hemoglobin (Hb, HbO ₂ ) in the green region.
Absorption in the blue region, hemoglobin (Hb, H
It can be seen that bO ₂ ) and the yellow pigment Y greatly contributed.

Further, the calculation of the density value of each parameter from each color data of the four wavelengths of each pixel is basically based on the spectral distribution of the skin surface, based on the melanin dye M, oxyhemoglobin (HbO ₂ ), and reduced hemoglobin (HbO ₂ ). ) And the four unknowns of the yellow dye Y, equations can be obtained for four wavelength ranges of blue (B), green (G), red (R) and IR. By this equation,
The respective density values will be obtained. Here, a description will be given of a transmission model shown in FIG. 7 which follows the simplest Lambert Bear's law.

In FIG. 7, xj is the concentration, εij is the extinction coefficient, i = B, G, R, IRj = Hb, HbO ₂ , M (melanin pigment), Y (yellow pigment such as bilirubin pigment and carotene) Pigment).

Assuming that yi = y0i · 10− ^{εxj · εij} Yi = log (y0i / yi),

[0032]

(Equation 1)

The density of each parameter can be obtained as follows.

[0034]

(Equation 2)

The oxygen saturation S is given by S = HbO ₂ /
(HbO ₂ + Hb), and
The hemoglobin concentration can be calculated as (HbO ₂ + Hb).

FIG.
As shown in (1), a normal color image A is projected on one of the four divided images on the image monitor 10. Also, the measurement calculation images a to c showing the characteristics of each predetermined data (each biological information) necessary for diagnosis for each pixel, such as blood concentration, oxygen saturation thereof, pigmentation level of melanin pigment, etc. In order to display on the remaining three of the divided images and to project each of the measurement data of each of the predetermined data (each of the biological information) in the pseudo color display of the color scale d together with each of the measurement operation images a to c as the above characteristic images, the composition is performed. It is designed to create images. That is, the image display is performed on the image monitor 10 by displaying the color image A of the patient's face and the four-divided image display of the blood concentration image a, the oxygen saturation image b, and the melanin dye image c as the measurement calculation images. I have. Each pixel value of these measurement calculation images a to c is given by measurement data of calculation results. For example, assuming that the measurement data is the blood density image a, the pixel value may be set larger if the density value is higher, and may be set smaller if the density value is lower. For example, as shown in FIG. 8, when the input pixel value is small, the color is colored blue, when the input pixel value is intermediate, the color is green, and when the input pixel value is large, the color is red. Since these measurement calculation images a to c are monochrome images, like the measurement calculation images a to c on the image monitor 10 in FIG.
This is colored according to the pixel value and converted into an image which is easy to see and judge. In this case, for example, in the measurement calculation image a, the cheek portion a1 of the face image is red. Such display control is performed by the control unit 1 shown in FIG.
1 is stored in the output image memory 34 via the LUT switcher 33 and is output to the image monitor 10 via the A / D converter 35. This is called a LUT (Look Up Table). ) Conversion is performed.

Further, in addition to the above, as a representative value calculation function, the blood concentration of each part such as the face forehead, cheeks and lips, the oxygen saturation and the pigmentation level of the calculated values obtained for each pixel are obtained. Find the average value. At this time, the personal computer 12 functions as a dedicated image processing device for performing the above-described image extraction, composite image, representative value calculation, and the like. Further, the personal computer 12 can display the trend from the recording of the biometric data for each patient on the image monitor 10 to provide information that assists a doctor in making a diagnosis.

With the above configuration, in addition to the color image information of the face used as a general grasp of the patient's condition in remote diagnosis of the patient, etc., regardless of the inconsistency in the reproduction characteristics of the face color at the time of image output, the digital Using the face color data quantified (quantified) at the time of photographing the face by the camera 2, various parameters that accurately indicate the state of the living body and the like are obtained by performing various arithmetic processing in the image memory / data processing unit 9, and are obtained as physical quantities. As the color image A of the face on the image monitor 10
In addition, doctors can make quantitative and accurate diagnoses without being affected by color errors during image color reproduction.Moreover, quantification of such various types of objective biometric information enables more accurate diagnosis. Can do well. in this way,
The face color diagnosis system of the present invention is not a direction of high-fidelity color reproduction, but is quantified as more direct and objective biometric information necessary for medical diagnosis, and is directly biometric information together with the face color image A. By displaying the measurement calculation images a to c, a more accurate diagnosis is performed without being affected by the image color reproduction of the display. Furthermore, if the digital camera 2 is used as the photographing means, the photographing can be performed by the same operation as ordinary photographing, and for example, even a single patient can photograph by himself using a self-timer or the like. it can.

Further, if photographing is performed using a light source such as a strobe flash 3, the spectral characteristics of the light source become known, and the influence of ambient light on various measurements can be reduced. Also, for example, strobe flash 3
If the light source is a direct light source, the luminance difference will be too large and cause halation, which may make it difficult to obtain accurate skin color data and make it difficult for a doctor to make a diagnosis. If the illumination of the face or the like is indirect illumination, halation can be prevented and skin color data can be more accurately obtained.

Further, if the color scale d shown in FIG. 3 is displayed together with the color image of the entire face on the four-part composite image display by the image monitor 10, calibration (adjustment) of color reproduction can be performed. More accurate medical diagnosis can be performed. Also, if a color member such as the reference white plate 13 shown in FIG. 1 is attached to the chest or the like of the patient to be imaged, it is possible to correct the temporal change of the spectral characteristics of the light source and to correct the influence of the ambient light. The color accuracy can be increased. Further, if the photographing background color is a uniform color such as blue, the face image can be easily extracted by a blue-back chroma key technique, which is a general image composition technique. Also, such a blue back (blue background)
However, if an appropriate color is selected, medical diagnosis becomes easier in comparison with skin color, and more accurate diagnosis can be performed.

In the home oxygen therapy, in the present embodiment, image data obtained by photographing the face of a home patient with the digital camera 2 and a pulse oximeter, a sphygmomanometer, and an electrocardiograph to which various biological measurement probes are respectively connected. Although the measurement data measured by various measuring devices 5 such as a thermometer and a thermometer is transmitted to the transmission destination via the telephone line 6, the above-described embodiment also supports the case where only the measuring data by the measuring device 91 is used. In this case, the transmitting means on the home side can be transmitted by the modem 92. For example, the measurement data such as arterial blood oxygen saturation measured by a measuring device 91 such as a pulse oximeter as the patient's biological information is transmitted to the modem 9.
2 transmits the data from the patient's home side to the hospital side modem 94 via the telephone line 93, receives the measurement data by the modem 94, and displays the measurement data on the monitor of the personal computer 95. While monitoring the fluctuation, it can be used to determine, for example, the oxygen intake flow rate. Also, in general home therapy, more accurate medication is sent by sending biological information such as body temperature, blood pressure, and electrocardiogram from the patient's home to the hospital via the telephone line 93 and grasping the daily biological information. You can also determine the type and amount of stomach and give guidance on daily life. Further, in the present embodiment,
By photographing the fundus of the home patient, it becomes possible to determine a subtle color tone of the fundus conjunctiva.

[0042]

As described above, according to the present invention, in addition to the image information used to grasp the general condition of the patient, regardless of the inconsistency of the reproduction characteristics of the skin color, the object can be imaged by the photographing means. Color data is digitized and captured at the time of shooting, and parameters that accurately indicate the situation of the shooting target are displayed as physical quantities, so that objective biological information can be quantified and color errors during image color reproduction It is possible to make a more accurate diagnosis regardless of the condition.

Further, if an image is taken using a light source whose spectral characteristics are known, the influence of the ambient light on the measurement can be reduced to a color display, and a more accurate diagnosis can be made.

Further, if the illumination of the object to be photographed is indirect illumination, halation and the like can be prevented, accurate skin color data can be obtained, and more accurate diagnosis can be made.

Further, if a color member such as a reference white plate is attached to the chest or the like of the patient to be imaged, the change over time in the spectral characteristics of the light source and the effect of ambient light can be corrected based on the color of the color member. And the accuracy of the image color can be further improved.

Further, if the photographing background color is made uniform, not only the face image can be easily extracted, but also a more accurate diagnosis can be made in comparison with the skin color.

Further, if the color scale is displayed, the color reproduction system can be calibrated, the reproduced color can be adjusted, and a more accurate diagnosis can be made.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a complexion diagnosis system according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of a main part of the digital camera 2 of FIG. 1;

FIG. 3 is a block diagram showing a main configuration of the personal computer 12 of FIG.

FIG. 4 is a structural diagram of a human skin in a depth direction.

FIG. 5 is a diagram showing a spectral distribution characteristic according to wavelength-reflectance on human skin.

FIG. 6 is a diagram showing spectral absorption characteristics of human skin.

FIG. 7 is a transmission model diagram according to Lambert Bear's law.

8 is a diagram showing colors for input pixel values of a color scale d in the display monitor 10 of FIG.

FIG. 9 is a block diagram illustrating a configuration of a diagnostic system according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Facial color diagnostic system 2 Digital camera 3 Strobe flash 4 Keyboard 5,91 Measuring instrument 6,93 Telephone line 7 Home patient bio-information communication unit 8, 92, 94 Modem 9 Image memory / data processing unit 10 Image monitor unit 11 Control unit 12, 95 Personal computer (PC) 13 21 Lens group 22 Beam splitter 23, 24 Image sensor 25 Infrared filter 26, 27 Light 31 Image memory 32 Recording medium 33 LUT switcher 34 Output image memory A Color image a Blood concentration image b Oxygen Saturation image c Melanin dye image d Color scale

Claims (7)

[Claims] 1. A diagnostic system for displaying various types of images of a target that can be diagnosed, comprising: a photographing unit that captures an image of the target as image data quantified for each pixel; Calculating means for obtaining predetermined data, image data obtained by the photographing means, and transfer means for transferring any of the predetermined data and image data, and display means for displaying the predetermined data and image data. A diagnostic system comprising: 2. The diagnostic system according to claim 1, wherein said photographing means photographs the object with photographing light from a light source having a predetermined spectral characteristic. 3. The diagnostic system according to claim 2, wherein the photographing light is indirect illumination light. 4. The object to be photographed is provided with a color member indicating a reference color, and the photographing means is provided with a color correction means for performing color correction using the color member as a color reference. 3. The diagnostic system according to 1 or 2. 5. The arithmetic unit extracts each wavelength pixel data of the skin portion from each wavelength pixel data of the image data, and calculates, from each extracted wavelength pixel data of the skin portion,
The calculation between the wavelengths is performed, and the image and measurement values indicating at least one of the blood distribution concentration, the blood oxygenation level, and the pigmentation level, which are the predetermined data, are output. The diagnostic system according to claim 1, wherein the image data is displayed as an image together with an image and a measured value. 6. The diagnostic system according to claim 1, wherein the arithmetic unit synthesizes the images so that the photographing background color is uniform. 7. The diagnostic system according to claim 5, wherein the measurement value is a color scale.