JP6373750B2 - Skin evaluation method and skin evaluation support system - Google Patents

Description

  The present invention relates to a technique for acquiring a skin image used for evaluating the appearance of skin.

  When evaluating bare skin or makeup skin, a captured image of the skin that is the subject is used. On the other hand, how the skin looks depends on the illuminance, the direction of light and the color. Therefore, the skin photographing method and the photographing environment are very important elements for evaluating the appearance of the skin with high accuracy.

  Japanese Patent Application Laid-Open No. 2004-228561 describes a human photograph photographing apparatus that can easily cope with fluctuations in the amount of illumination light of the illumination means for each photographing. In the following Patent Document 2, after measuring the surface reflected light component by setting both or one of the incident angle of the illumination light to the skin surface and the light receiving angle of the surface reflected light component in the photographing device or two different directions, A technique for evaluating the texture of the skin (degree of aging) from the tendency of these different surface reflected light components is described. Patent Document 3 listed below describes an illuminating device that can independently switch on and off a plurality of light sources that can illuminate from four directions, up, down, left, and right of an imaging region of a subject.

JP-A-10-271423 JP 2002-17689 A JP 2004-251750 A

  Human skin is seen every day under various lighting conditions. Even outdoors, lighting conditions vary depending on time periods such as early morning, daytime, evening, and night, weather such as sunny weather and cloudy weather, places such as the sun, and shade. Even indoors, lighting conditions vary depending on the conditions of outside light, how to enter, the type of indoor lighting, and the installation position. Moreover, human skin is seen by various observation methods (distance, angle, viewpoint, etc.).

  Since the appearance of human skin varies depending on the illumination conditions and the observation method, how to set the illumination conditions and the observation method as the evaluation conditions is important when evaluating it. For example, the development and evaluation of cosmetics are performed by paying attention to various life situations so that there is no difference in makeup effect depending on the life situations (places). However, at present, it is difficult to observe a makeup face in various daily life situations efficiently in a short time with high reproducibility. In order to observe the makeup skin in front of the washbasin and the makeup skin in a place exposed to the sun outdoors, it was necessary to move the subject to the actual location. If it takes time to move, the state of the makeup skin will change, and it will not be possible to evaluate appropriately. Such a problem also applies to the evaluation of bare skin.

  The illumination device of Patent Document 3 is intended to take an image suitable for photographing purposes such as evaluation of skin color and recording of unevenness of skin, and actual evaluation assuming the daily life scene as described above. The condition cannot be reproduced.

  In view of such a problem, the present invention provides a technique that makes it possible to acquire an image that virtually reproduces the appearance of a test skin in a real environment.

  Each aspect of the present invention employs the following configurations in order to solve the above-described problems.

  The skin evaluation method according to the first aspect uses an image obtained by imaging a test skin illuminated by an illumination device capable of adjusting illumination conditions with an imaging device. In this skin evaluation method, the illumination condition in the combination of the illumination condition and the camera parameter corresponding to the actual environment for evaluating the test skin is set in the illumination device, the camera parameter in the combination is set in the imaging device, and the set illumination Including capturing an image representing the appearance of the subject skin in a real environment to be evaluated by causing the imaging device to capture the subject skin illuminated by the illuminating device under the conditions with the set camera parameters. .

  The skin evaluation support system according to the second aspect uses an image obtained by capturing an image of the test skin illuminated by an illumination device capable of adjusting illumination conditions. In this skin evaluation support system, the lighting condition in the combination of the lighting condition and the camera parameter corresponding to the actual environment for evaluating the test skin is set in the lighting device, and the camera parameter in the combination is set in the imaging device and set. An image representing the appearance of the subject skin in a real environment to be evaluated is captured by causing the imaging device to capture the subject skin illuminated by the illumination device under the illumination conditions with the set camera parameters.

  According to each said aspect, the technique which enables acquisition of the image which reproduces virtually how the test skin looks in a real environment can be provided.

It is a flowchart which shows the skin evaluation method in this embodiment. It is a side view which shows typically the skin evaluation assistance system in this embodiment. It is a rear view of the skin evaluation assistance system in this embodiment. It is a figure explaining the position direction as illumination conditions in the skin evaluation assistance system in this embodiment. It is a figure explaining the illumination direction as an illumination condition in the skin evaluation assistance system in this embodiment. It is a figure which shows the hardware structural example of the information processing apparatus of the skin evaluation assistance system in a 1st modification. It is a figure which shows notionally the process structural example of information processing apparatus. It is a figure which shows the image imaged so that the appearance of the test skin (makeup skin) in front of the toilet vanity of a toilet might be reproduced. It is a figure which shows the image imaged so that the appearance of the test skin (makeup skin) in an office might be reproduced. It is a figure which shows the image imaged so that the appearance of the test skin (makeup skin) of the outdoors at the time of cloudy weather might be reproduced. It is a figure which shows the site | part of each image used for verification.

  Although this application is invention of a skin evaluation method and a skin evaluation support system, since it is a method of implementing skin evaluation using a skin evaluation support system, while showing the structure of the skin evaluation support system below, the skin evaluation method At the same time, the necessary settings and standards are explained. In addition, embodiment mentioned below is an illustration and this invention is not limited to the structure of the following embodiment.

[Skin Evaluation Method]
FIG. 1 is a flowchart showing a skin evaluation method in the present embodiment. The skin evaluation method in the present embodiment (hereinafter sometimes simply referred to as an evaluation method) evaluates the appearance of the test skin using an image captured by the skin evaluation support system. The skin evaluation support system includes an illuminating device that can adjust an illumination condition for illuminating the subject skin, an imaging device that can image the subject skin illuminated by the illuminating device, and the like. Details of the skin evaluation support system will be described later.

The evaluation method in this embodiment is implemented by an evaluator, for example. However, the execution subject of the evaluation method in the present embodiment is not limited only to the evaluator. For example, part or all of the evaluation method may be executed by a skin evaluation support system described later. The execution subject of the evaluation method will be supplementarily described later.
The evaluation method in this embodiment includes steps (S11) to (S15) as shown in FIG.

  In step (S11), the evaluator determines an evaluation condition and selects a combination of the illumination condition and the camera parameter corresponding to the evaluation condition. Those combinations corresponding to the evaluation conditions are determined in advance and may be presented by a print medium, a display device, or the like. The evaluation conditions are determined by the actual environment for evaluating the test skin and the observation method. Therefore, in other words, the evaluator selects a combination of lighting conditions and camera parameters corresponding to the actual environment and the observation method for evaluating the test skin.

  The actual environment as the evaluation condition is a place where the test skin (subject) and the evaluator actually exist, and corresponds to a place where the evaluator directly observes the test skin. However, in this embodiment, since it is possible to evaluate anywhere using an image without actually going to the real environment, the real environment is a virtual image obtained by imaging a test skin irradiated under a certain illumination condition. Is realized. That is, the captured image represents the appearance of the test skin when the evaluator directly observes the test skin existing in the real environment as the evaluation condition. The actual environment is set, for example, in a place where each person cares about how his / her skin looks in daily life. As such a place, for example, in front of the bathroom vanity, in the office, outdoors, etc. are exemplified. However, this embodiment does not limit the real environment as an evaluation condition.

  As the illumination conditions, at least one or all of the number of illuminations, the illuminance, the position direction, the illumination direction (irradiation angle), the color, and the type of the light source are designated. However, other conditions for illumination may be specified as illumination conditions. In the present embodiment, the illuminance, the position direction, the illumination direction, and the color corresponding to the evaluation condition are determined in advance. The illuminance specified as the illumination condition is information that represents the degree of brightness on the test skin in the imaging environment of the skin evaluation support system in consideration of human visual sensitivity. Since the illuminance changes depending on the distance from the light source and the incident angle of light, it depends not only on the output level of the lighting device but also on the positional relationship between the lighting device and the skin to be examined. Therefore, the illuminance specified by the illumination condition may be indirectly indicated by the output level (brightness adjustment state) of the illumination device or the positional relationship between the illumination device and the subject skin. A method for determining the illuminance for each real environment will be described later.

  The number of lights specified as the lighting condition indicates the number of light sources. Examples of the light source specified as the illumination condition include incandescent bulbs, external electrode fluorescent tubes, and LEDs (Light Emitting Diodes).

  The position direction of illumination indicates the position of the light source of the illumination device with respect to the subject skin. An illumination direction shows the irradiation angle with respect to the test skin of the light source of an illuminating device. Details of the illumination direction and illumination direction will be described later. For example, the position direction of the illumination may be indicated by the upper, lower, left, and right levels, or more specifically, by the position angle for each of the upper, lower, left, and right. For example, when the actual environment is in front of the bathroom vanity, only the upward direction is set as the position direction of the lighting condition. When the actual environment is in the office, the upper, left, and right directions are the position direction of the lighting condition. Is set.

  The color of the illumination is determined so as to correspond to the evaluation condition, and is indicated by the color temperature. For example, when the real environment is in an office, 5000 Kelvin (K) is set as the lighting condition, and when the real environment is cloudy outdoors, 6500 K is set as the lighting condition. However, the illumination position direction, illumination direction, and color determined for each real environment are not limited.

  The illumination condition may be determined within a range that can be adapted to various evaluation conditions (actual environment) and can be realized by the illumination device. In the present embodiment, the position direction of the illumination condition includes irradiation from at least two directions, and the at least two directions include a direction from the front and the upper side of the test skin.

  Camera parameters include at least one of setting information and photographing conditions that can be adjusted by the imaging apparatus of the skin evaluation support system, such as shutter speed, frame rate, aperture value, ISO (International Organization for Standardization) sensitivity, white balance, etc. Includes everything. The imaging conditions include one or both of the distance between the test skin and the imaging device and the imaging angle. In the present embodiment, the camera parameters determined according to the evaluation conditions include the shutter speed as setting information and the distance between the skin to be examined and the imaging device as imaging conditions.

  In particular, the adjustment of the exposure amount can be obtained by controlling the shutter speed and the aperture value. Further, it can be controlled by an EV value (exposure value) obtained from the shutter speed and the aperture value. In the case of a still image, the shutter speed is preferable because of the depth of field, and a display device may be installed for confirmation. In the case of a moving image, it is preferable to adjust the frame rate so that an image representing the appearance of the test skin in a real environment evaluated in real time can be confirmed. In that case, it is possible to observe a moving image in real time by installing a display device in the configuration of the skin evaluation support system.

  In the case of a moving image, the camera 21 of the imaging device 20 captures a moving image of the subject skin. The captured moving image data is taken out from the camera 21 via communication or a portable recording medium. Further, a real-time image captured by the camera 21 may be output by a display device connected to the camera 21. When shooting a moving image with the camera 21, depending on the specifications of the camera 21, the shutter speed that can be set according to the frame rate may be limited. Therefore, the frame rate may be further set in the camera parameter determined as a combination with the illumination condition according to the actual environment. In this case, the frame rate may be set and changed so that the shutter speed determined according to the actual environment can be set in the imaging device 20.

  In the present embodiment, various types of real-world brightness are realized by variations of combinations of illuminance as an illumination condition and shutter speed as a camera parameter.

  FIG. 4 is a diagram for explaining a position direction as an illumination condition in the skin evaluation support system in the present embodiment. In the skin evaluation support system according to the present embodiment, for example, the upper position direction is above and below the central part (for example, cheeks and nose) of the subject's face with the chin placed on the chin rest 30 and the light emitting surface 12a of the light source box 11a. This is indicated by an angle (X) formed by a plane PL2 including a center line connecting the center points of directions and a horizontal plane PL1 passing through the central part of the subject's face. Similarly, the lower position direction includes a plane including a center portion of the subject's face and a center line connecting the vertical center points of the light emitting surface 12b, and a horizontal plane passing through the center portion of the subject's face. It is indicated by an angle (not shown) formed by. The left side direction is parallel to the plane including the center part of the subject's face and the center line of the light emitting surface 12c in the left-right direction, parallel to the front view direction and orthogonal to the horizontal plane. This is indicated by an angle (not shown) formed by a plane passing through the central part of the subject's face. The right position direction is a plane including the center part of the subject's face and the center line connecting the center points of the light emitting surface 12d in the left-right direction, parallel to the front view direction and orthogonal to the horizontal plane. It is indicated by an angle (not shown) formed by a plane passing through the central part of the face.

  The angle (X) indicating the position direction is preferably determined in the range of 5 to 85 degrees, more preferably in the range of 10 to 70 degrees, and still more preferably in the range of 20 to 60 degrees. Further, the position direction may be not only one or two directions (up and down direction), but also three directions (up and left and right) and four directions (up and down and left and right).

  FIG. 5 is a diagram for explaining an illumination direction as an illumination condition in the skin evaluation support system in the present embodiment. In the skin evaluation support system according to the present embodiment, for example, the upper illumination direction is such that the center part (for example, cheek or nose) of the subject's face with the chin placed on the chin rest 30 and the upper and lower sides of the light emitting surface 12a of the light source box 11a. The plane PL2 including the center line connecting the center points of the directions is used as a reference plane, and is represented by an angle (Y) formed by the reference plane PL2 and the plane PL3 orthogonal to the light emitting surface 12a at the center line. For example, regarding the angle (Y), the angle above the reference plane PL3 is positive, and the opposite direction (downward) is negative. It is possible to distinguish how the shadow is applied on the test skin based on the positive and negative information of the angle (Y). This angle (Y) can be adjusted by the upper light source support mechanism 13a. The lower illumination direction includes a plane (reference plane) including a center portion of the subject's face and a center line connecting the vertical center point of the light emitting surface 12b, and the light emitting surface 12b at the center line. It is indicated by an angle (not shown) formed by an orthogonal plane. This angle can be adjusted by the lower light source support mechanism 13b. The left illumination direction is a plane (reference plane) including a center part of the subject's face and a center line connecting the center points of the light emitting surfaces 12c in the left-right direction, and the center line is orthogonal to the light emitting surface 12c. It is indicated by an angle (not shown) formed by the plane to be formed. This angle can be adjusted by the left light source support mechanism 13c. The right illumination direction is a plane (reference plane) including a center part of the subject's face and a center line connecting the center point of the light emitting surface 12d in the left-right direction, and the center line is orthogonal to the light emitting surface 12d. It is indicated by an angle (not shown) formed by the plane to be formed. This angle can be adjusted by the right light source support mechanism 13d.

  The irradiation direction (angle Y) is preferably determined in the range of −45 degrees to 90 degrees, more preferably in the range of −30 degrees to 60 degrees, and further preferably in the range of −10 degrees to 45 degrees.

  The range of brightness in daily life where human skin can be seen is very large. Human skin can be seen in a variety of light environments, from dimly lit environments such as atmospheric bars and restaurants, and offices that are turned off during lunch breaks, to very bright environments such as the sun in sunny weather . If such various brightnesses are to be realized only by the light source of the lighting device, the scale and cost of the lighting device increase. Even if various brightnesses can be realized only by the light source of the illumination device, the burden on the subject illuminated by the illumination device is increased. Therefore, the present inventors have found a new technical problem of realizing skin evaluation under various brightness environments while suppressing a change range of the amount of light emitted from the lighting device. Then, the inventors of the present invention have the idea of virtually realizing various brightness environments on the captured image by combining the change in the amount of light emitted from the illumination device and the change in the exposure amount of the imaging device. Obtained. The exposure amount of the imaging device corresponds to the amount of light hitting the film or the imaging device. Therefore, it is optical that various brightness environments can be realized on the captured image by combining the change in the amount of light (illumination light) actually applied to the test skin and the change in the imaging amount of the reflected light from the test skin. Can be explained.

  In the present embodiment, the exposure amount of the imaging apparatus is changed according to the shutter speed. The exposure amount of the image pickup apparatus can be changed also by the aperture value. However, when the aperture value is changed, the depth of field changes, which may affect the visibility factors other than brightness. Therefore, in this embodiment, various brightness environments are realized by changing the shutter speed while keeping the aperture value constant. However, the present embodiment is not limited to changing only the shutter speed, and the aperture value may be changed in addition to the shutter speed.

  The present inventors actually captured skin images while changing the output of the illumination device and the shutter speed setting of the imaging device, and determined whether the appearance of the skin in each image is close to the brightness of the real environment. Each was evaluated by an expert. The present inventors have repeated such trial and error to determine each combination of illuminance and shutter speed as illumination conditions corresponding to various types of actual environments. The present inventors have adapted the brightness environment virtually realized on the captured image to human vision by using such a determination method.

  Thereby, the illuminance combined with a certain shutter speed (illuminance realized in the photographing environment of the skin evaluation support system) is determined to be a value different from the standard illuminance in the assumed actual environment. For example, when the actual environment is under the sun in the daytime on a cloudy day, the standard illuminance is considered to be 30,000 lx or more. The illuminance as the illumination condition is combined with the shutter speed 1/40 (seconds). Accordingly, 1800 (lx) is determined. Conversely, the illuminance as the illumination condition may be determined to be a value brighter than the standard illuminance in the actual environment.

  As described above, the exposure amount of the imaging apparatus can be changed not only by the shutter speed but also by the aperture value, and can also be expressed by an EV value (exposure value). Therefore, the combination of illuminance and EV value as illumination conditions can be determined for each of various types of real environments. In this case, the EV value is preferably determined in the range of −5 to 25, more preferably in the range of −2 to 22, and still more preferably in the range of 0 to 20.

  The evaluation of the appearance of the skin may include a local evaluation such as pores and texture, and a global evaluation such as an impression of the arms, legs, hands, and the entire face. The observation method is determined according to such evaluation variations. For example, when global evaluation is required, an imaging position and an imaging angle are set so that the entire part is imaged. In addition, when local evaluation is required, a shooting position and a shooting angle are set so that the local area is captured. The skin evaluation support system described later has a structure that can easily adjust the shooting position and the shooting angle of the imaging apparatus in order to cope with such various observation methods.

  When a plurality of combinations of illumination conditions and camera parameters corresponding to a plurality of types of evaluation conditions are provided, the evaluator selects one combination corresponding to the current evaluation condition from among the plurality of combinations. You can also. A plurality of combinations corresponding to a plurality of types of evaluation conditions may be provided in a print medium or displayed on a display device.

  In step (S12), the evaluator sets the illumination condition determined in (S11) in the illumination device. For example, the evaluator sets the lighting device so as to have the illuminance, the position direction, the lighting direction, and the color specified as the lighting conditions. More specifically, the evaluator preliminarily associates the illuminance on the test skin in the imaging environment of the skin evaluation support system with the actual environment, which is different from the standard illuminance in a certain actual environment for evaluating the test skin. The output of the lighting device is set so that the determined illuminance is obtained. A specific method for setting the illumination condition to the illumination device will be described in detail in the description of the skin evaluation support system.

  In step (S13), the evaluator sets the camera parameter determined in (S11) in the imaging apparatus. When the imaging apparatus has a unique user interface (UI), the evaluator uses the UI to set camera parameters such as shutter speed in the imaging apparatus. Further, when the imaging condition indicating the distance and imaging angle between the skin to be examined and the imaging device is specified as the camera parameter, the evaluator adjusts the imaging device to such a distance and angle. A structure that enables adjustment of imaging conditions of the imaging apparatus in the skin evaluation support system will be described later.

  In step (S14), the evaluator causes the imaging device to capture the test skin illuminated by the lighting device under the lighting conditions set in (S12) using the camera parameters set in (S13). For example, the evaluator presses the shutter button of the imaging apparatus in a state where the settings of (S12) and (S13) are completed. Skin image data captured by the imaging device is taken out of the imaging device via communication or a portable recording medium. The evaluator may display the extracted image data on the display device or may cause the printer to print the image data. It is also possible to automatically output to a predetermined display device or printer after pressing the shutter button.

  In step (S15), the evaluator evaluates the appearance of the test skin using the image obtained by the imaging in (S14). Since the image obtained by the imaging in (S14) virtually reproduces the appearance of the test skin in the real environment, the evaluator uses the image to determine the test skin in the target real environment. It is possible to evaluate the appearance when the object is viewed by the observation method. In this embodiment, the actual evaluation method using an image is not limited at all.

  Here, the skin that can be the test skin may be any part of the human body. For example, a part of the face such as the face, cheek, forehead, nose, chin, lips, neck, arms, legs, back, and the like can be the test skin. Moreover, the surface of the hair may be the test skin. Moreover, the test skin may be bare skin or may be makeup skin to which cosmetics are applied. When the skin to which cosmetics are applied is taken as the test skin, the suitability and application state of the cosmetic with respect to the test skin can be evaluated using the image obtained by the imaging in (S14). . The suitability of the cosmetic indicates whether or not the cosmetic is suitable for the test skin or the degree of suitability thereof. Moreover, the application state of cosmetics indicates the appropriateness of how to apply the cosmetics to the skin. For example, if a state in which makeup is not in close contact with the skin (a state in which makeup is poor or a state in which makeup is floating) is detected from an image, the possibility of poor suitability of cosmetics or how to apply cosmetics May be bad. Moreover, if the state in which the cosmetic is present in the mottle is detected, the method of applying the cosmetic may be bad. In the present embodiment, by using an image obtained by the skin evaluation support system, not only the evaluation of bare skin but also the evaluation of such makeup skin can be performed.

  In FIG. 1, a plurality of steps are shown in order, but the steps executed in the present embodiment and the execution order of the steps are not limited to the example of FIG. (S12) and (S13) may be executed in the reverse order, or may be executed in parallel if possible.

[Skin Evaluation Support System]
Hereinafter, the structure of the skin evaluation support system in this embodiment is demonstrated using FIG.2 and FIG.3. FIG. 2 is a side view schematically showing the skin evaluation support system in the present embodiment. FIG. 3 is a rear view of the skin evaluation support system in the present embodiment. In the following description, the direction from the imaging device 20 toward the subject (examined skin) is set as the front view direction, and the left and right direction is set with respect to the front view direction. However, the structure shown in FIGS. 2 and 3 is merely an example, and the structure of the skin evaluation support system 1 is not limited to those shown in the drawings.

  A skin evaluation support system (hereinafter sometimes abbreviated as a support system) 1 in the present embodiment includes a lighting device 10, an imaging device 20, and a chin rest 30.

  The chin rest 30 is a pedestal on which the subject's chin is placed. By placing the chin on the chin rest 30, the head of the subject is fixed. FIG. 2 shows an example in which the skin of the face is the test skin. However, when the test skin is the skin of the hand, arm, or foot, a platform on which the hand, arm, or foot is fixedly placed may be provided. .

  The lighting device 10 is a device that can adjust the lighting conditions as described above and illuminates the skin under test with the set lighting conditions. The illumination device 10 realizes various illumination conditions by having the following structure.

  The illuminating device 10 has four light source boxes each accommodating a light source. The light source is not particularly limited as long as it can realize the maximum illuminance and color specified as the illumination conditions, such as a fluorescent lamp and an LED (Light Emitting Diode). The lighting device 10 includes an upper light source box 11a and a lower light source box 11b that are long in the left-right direction, and a left light source box 11c and a right light source box 11d that are long in the vertical direction. Each light source box is generally designated by reference numeral 11. Each light source box 11 surrounds the skin to be examined vertically and horizontally in front view and back view. In the present embodiment, each light source box 11 surrounds a part of the face of the subject with the chin placed on the chin rest 30 or the chin rest 30 in the vertical and horizontal directions.

  Each light source box 11 has light emission surfaces 12a, 12b, 12c, and 12d arranged on a vertical surface at a predetermined distance from the subject skin in a side view. Each light exit surface is generically designated by reference numeral 12. In the present embodiment, the light emitting surfaces 12 are arranged on a vertical surface at a position away from the chin rest 30 in a state in which the light emitting surfaces 12 face each other in the horizontal direction. Here, the arrangement on the vertical plane does not mean that it is completely located on the plane, but also includes the arrangement on a position slightly deviated from the vertical plane.

  With the arrangement of the four light source boxes 11 as described above, it is possible to adjust the approximate position and direction of illumination as illumination conditions. For example, when the position direction is specified at the upper, lower, left, and right levels, at least one of the four light source boxes 11 may be irradiated with light.

  Furthermore, the illumination device 10 includes an upper light source support mechanism 13a and a lower light source support mechanism 13b that support the upper light source box 11a and the lower light source box 11b so as to be swingable in the vertical direction, and the left light source box 11c and the right light source box. The left light source support mechanism 13c and the right light source support mechanism 13d each support 11d so as to be swingable in the left-right direction. By the upper light source support mechanism 13a and the lower light source support mechanism 13b, the light emission surfaces 12a and 12b are inclined in the vertical direction (the vertical direction of the paper surface of FIG. 3). By the left light source support mechanism 13c and the right light source support mechanism 13d, the light emission surfaces 12c and 12d are inclined in the left-right direction (the left-right direction in FIG. 3). By such each light source support mechanism 13, the illumination direction as an illumination condition can be adjusted, and the illumination direction can also be adjusted to be orthogonal to the subject skin.

  In addition, the illumination device 10 includes position adjustment mechanisms 14a and 14b (not shown) that can change the positions of the upper light source box 11a and the lower light source box 11b in the vertical direction, the left light source box 11c, and the right light source box 11d. Position adjusting mechanisms 14c and 14d that can change the position in the left-right direction. As shown in FIG. 3, in the present embodiment, each position adjustment mechanism 14 includes a guide rail, and each light source support mechanism 13 engages with the guide rail at an end opposite to each light source box 11. Thereby, each light source box 11 moves along a guide rail via each light source support mechanism 13. Each position adjustment mechanism 14 can adjust the distance between the test skin and the light source and the position direction of illumination.

  The lighting device 10 includes a light control unit 18 that switches the output of the light source of each light source box 11. The light control unit 18 is realized by various hardware circuits. The hardware circuit may also include a processor such as an MPU (Micro Processer). The light control unit 18 can also execute various controls by executing a program stored in the memory by such a processor.

  The light control unit 18 switches the output (ON / OFF) of the light source of each light source box 11 so that light is emitted from the light source in the position direction specified as the illumination condition. Specifically, the light control unit 18 includes a control panel, and switches the brightness of the light source of each light source box 11 so that the illuminance on the subject skin becomes the illuminance corresponding to the user operation on the control panel. In the present embodiment, the brightness switching method is not limited. For example, the brightness may be switched by ON / OFF switching of power supply to the light source, or the brightness may be switched by frequency switching by an inverter circuit or the like. The illuminance is preferably determined in the range of 25 lux (lx) to 15000 lx, more preferably in the range of 50 lx to 12,500 lx, and still more preferably in the range of 100 lx to 10000 lx.

  In addition, when the light source of each light source box 11 can adjust the light color, the light control unit 18 uses the light of the light source of each light source box 11 so that the color of the illumination corresponds to the user operation on the control panel. You can also switch colors. Further, when a plurality of light sources having different light colors are accommodated in each light source box 11, the light control unit 18 may switch ON / OFF of each light source so that the light color corresponds to the user operation. . Moreover, when each light source box 11 has a different light emitting surface for each light source having a different light color, the color of illumination can be switched by changing the light emitting surface directed toward the subject skin. The color temperature is preferably determined in the range of 2000K to 11000K.

  The control panel included in the light control unit 18 may include a mechanical operation element such as an ON / OFF type, a slide type, or a rotary type. The control panel may be realized by a GUI (Graphical User Interface). In this case, the control panel is configured by a combination of a display device and an input device (including a touch panel). The control panel can also allow input of illumination conditions such as illuminance, position direction, illumination direction and color. In this case, the light control part 18 should just control the output of the light source of each light source box 11 so that it may become the illumination intensity, the position direction, the illumination direction, and color corresponding to the illumination conditions input with respect to the control panel.

  Here, the setting method and setting subject of the illumination condition for such an illumination device 10 will be described in more detail.

  In the case where the vertical and horizontal levels are designated as the illumination position direction, the setter operates the control panel of the light control unit 18 to correspond to the designated light source box 11 in the four light source boxes 11. Turn on the light source. The act of the setter in this case is an operation on the control panel. Since the light control unit 18 controls the light source in response to this operation, the setting of the position of illumination with respect to the illumination device 10 is substantially performed by the light control unit 18.

  When a finer illumination direction is designated as the illumination condition, the setter may manually swing each light source box 11. When each light source support mechanism 13 can electrically swing each light source box 11, the setter changes the angle of each light source box 11 by performing an operation for instructing the swing width and swing direction. be able to. In this case, a control unit (not shown) that receives the instruction operation becomes a main body that sets the illumination direction.

  About the color of illumination, the setting person can also set by operating the control panel of the light control part 18, and can set by switching (rotating) the light emission surface of each light source box 11 manually. You can also. In the former case, the setting of the illumination color for the illumination device 10 is substantially performed by the light control unit 18.

  The illuminance is set by operating the control panel as described above. Therefore, the setting of the illuminance for the lighting device 10 is substantially performed by the light control unit 18. According to the operation of the control panel, the output (light quantity) of the light source of each light source box 11 is controlled. In addition, the setter can move each light source box 11 based on the above-described position adjustment mechanism 14 in order to set the illuminance as the illumination condition. By this movement, the distance between the test skin and the light source of each light source box 11 and the incident angle of light from each light source to the test skin change, and the illuminance on the test skin changes. Therefore, the setter can set the illuminance specified as the illumination condition in the illumination device 10 by changing the position of each light source box 11 in the vertical direction or the horizontal direction together with the output of each light source. When the above-described position adjustment mechanism 14 can electrically adjust the position of each light source box 11, the setter changes the position of each light source box 11 by performing an operation for instructing the movement width and the movement direction. be able to. In this case, a control unit (not shown) that receives the instruction operation is a main body that sets the illuminance.

The imaging apparatus 20 is an apparatus that can adjust the imaging conditions as described above and images the skin under test with the set imaging conditions. The imaging device 20 realizes various imaging conditions by having the following structure.
The imaging device 20 includes a camera 21, a camera support mechanism 22, a first position adjustment mechanism 23, a second position adjustment mechanism 24, and the like. With these configurations, the imaging device 20 can adjust the position where the subject skin is imaged.

  The camera 21 is a digital camera, a film camera, or the like. The camera 21 can set the above-described camera parameters (shutter speed) by using a GUI or a mechanical operator (hardware button or the like). Specifically, a shutter speed that is determined in advance according to the combination with the illuminance is applied to the camera 21 so that an image representing the appearance of the subject's skin in a real environment set as an evaluation condition is captured. Once set, the camera 21 images the test skin at the set shutter speed.

  The camera support mechanism 22 supports the camera 21 so as to be swingable in the vertical direction. Specifically, the camera support mechanism 22 includes a swing adjustment screw 31, a column portion 32, a pedestal portion 33, etc., and the swing adjustment screw 31 passes through the column portion 32 and is inserted into a tripod hole of the camera 21. Thus, the camera 21 is fixed at a desired angle. The pedestal portion 33 supports the column portion 32. In this way, the camera support mechanism 22 makes the shooting angle of the camera 21 variable. However, the camera support mechanism 22 is not limited to the illustrated structure.

  The first position adjustment mechanism 23 supports the pedestal portion 33 from below, and enables the vertical position of the camera support mechanism 22 to be adjusted. The first position adjustment mechanism 23 has a known expansion / contraction structure such as a pantograph structure, and adjusts the vertical position of the camera support mechanism 22 manually or electrically by the expansion / contraction structure. The first position adjustment mechanism 23 is a known structure other than the telescopic structure, such as a shelf position adjustment mechanism, and can adjust the vertical position of the camera support mechanism 22. The structure of the first position adjustment function 23 is not limited. Thus, the vertical position of the camera 21 is variable by the first position adjustment mechanism 23.

  The imaging device 20 may further include a third position adjustment mechanism (not shown) that allows adjustment of the position of the camera support mechanism 22 in the left-right direction. The third position adjustment mechanism only needs to have a structure that allows the first position adjustment mechanism 23 to slide in the left-right direction.

  The second position adjusting mechanism 24 can adjust the position of the camera support mechanism 22 in a direction approaching the chin rest 30 and a direction away from the chin rest 30 (hereinafter referred to as a front-rear direction). The position change is realized by two guide rails 61 and two support columns 62 extending in the front-rear direction. Each support column 62 supports the first position adjusting mechanism 23 and engages with each guide rail 61 so as to be slidable in the front-rear direction. Since each guide rail 61 is fixed, each support column 62 slides in the front-rear direction. Thus, the second position adjusting mechanism 24 makes the imaging distance of the camera 21 variable from a distance at which the entire face is captured to a short distance at which pores and texture are captured. The distance between the test skin and the imaging device is preferably determined in the range of 0.25 meters (m) to 5 m, more preferably in the range of 0.3 m to 3 m, and still more preferably in the range of 0.4 m to 2 m.

  Here, a setting method and a setting subject of the shooting condition for the imaging apparatus 20 will be described in detail.

  Regarding the shooting position as the imaging condition, the setter operates the first position adjustment mechanism 23 to set the vertical position of the camera 21. Further, the setter operates the third position adjustment mechanism to set the position of the camera 21 in the left-right direction. In addition, the setter sets the position of the camera 21 in the front-rear direction by sliding each support column 62 of the second position adjustment mechanism 24 in the front-rear direction with respect to each guide rail 61.

After the shooting position of the camera 21 is set as described above, the setter operates the swing adjustment screw 31 of the camera support mechanism 22 to set the shooting angle of the camera 21.
However, each of the above-described configurations for adjusting the shooting position and shooting angle of the imaging device 20 may be electrically operated. In this case, the setter can change the shooting position and the shooting angle by performing an operation for instructing the shooting position and the shooting angle. In this case, a control unit (not shown) that receives the instruction operation is a main body that sets the shooting conditions.

[Function and effect]
As described above, in the present embodiment, a combination of illumination conditions and camera parameters (which may include photographing conditions) determined in advance corresponding to the actual environment and the observation method for evaluating the test skin as the evaluation conditions. The lighting device 10 and the imaging device 20 are set. Such a combination is predetermined for each evaluation condition (actual environment and observation method). Then, the test skin illuminated by the lighting device 10 under the set lighting conditions is imaged by the imaging device 20 using the set camera parameters under the set shooting conditions, and the test skin on the obtained image The appearance of is evaluated.

  According to the present embodiment, it is possible to capture a skin image by changing a combination of factors (illumination conditions and camera parameters) of both the illumination system and the imaging system for each evaluation condition (actual evaluation environment and observation method). . Thereby, the appearance of the skin in various daily life scenes having various illumination environments and various observation methods can be appropriately reproduced on the image without moving the subject to the actual place. Therefore, according to this embodiment, it is possible to observe and evaluate the appearance of the skin in various daily life scenes in a short time, efficiently and with high reproducibility.

  Further, in the skin evaluation support system 1, since the illumination device 10 has a structure in which the illumination conditions can be easily changed, and the imaging device 20 has a structure in which the imaging conditions can be easily changed. Various combinations of both factors with the system can be easily set.

  Further, in the present embodiment, as described above, various brightness environments in a daily life place where human skin is seen can be displayed on the captured image by combining the shutter speed and the illuminance as the illumination condition set in the illumination device 10. Can be virtually realized. As a result, it is possible to reliably reproduce the appearance of the skin in various daily life situations while suppressing an increase in the scale and cost of the lighting device.

  According to this embodiment, since the skin state can be objectively evaluated by using the image obtained by the skin evaluation support system, the selection and advice of cosmetics suitable for the skin state can be accurately performed. Can be done. For example, aging impression, stickiness, transparency, makeup, whitening, thick coating, powderiness, skin color, gloss, shine, finish color change, dullness, pore conspicuous, wrinkle conspicuous, spot・ Sobacus conspicuousness, bear conspicuousness, redness conspicuousness, accumulation of foundation, foundation removal, foundation swaying, powder floating, bare skin, naturalness, sagging, three-dimensionality, softness, brightness, matte feeling, Facial color, smoothness, freshness, etc. can be evaluated. The feeling of makeup indicates the natural finish of the entire face. When the finish is unnatural, white floating or thick coating is observed.

[First modification]
The skin evaluation support system 1 may further include an information processing device 70 as shown in FIG. 6 in addition to the above-described configuration.
FIG. 6 is a diagram illustrating a hardware configuration example of the information processing apparatus 70 of the skin evaluation support system 1 in the first modification. The information processing apparatus 70 is a so-called computer, and includes a CPU 71, a memory 72, an input / output interface (I / F) 73, and the like.

  The input / output I / F 73 can be connected to the display device 74, the input device 75, and the like. The display device 74 is an LCD (Liquid Crystal Display), a CRT (Cathode Ray Tube) display, or the like. The input device 75 is a device that receives an input of a user operation such as a keyboard and a mouse. However, a touch panel in which the display device 74 and the input device 75 are integrated may be connected to the input / output I / F 73. The information processing apparatus 70 may include hardware elements not shown in FIG. 6, and the hardware configuration of the information processing apparatus 70 is not limited.

  FIG. 7 is a diagram conceptually illustrating a processing configuration example of the information processing apparatus 70. The information processing apparatus 70 includes a display processing unit 81, a storage unit 83, and the like. Each of these processing units is realized, for example, by executing a program stored in the memory 72 by the CPU 71. In addition, the program is installed from a portable recording medium such as a CD (Compact Disc) or a memory card or another computer on the network via an input / output I / F 73 or a communication unit (not shown). May be stored in the memory 72.

  For each real environment assumed as the evaluation condition, the storage unit 83 stores an environment type indicating the type of the real environment, a combination of the illumination condition and the camera parameter in association with each other. The environmental type is information that can identify the type of each real environment such as a bathroom vanity, a window in an office, an outdoor in a cloudy weather, an outdoor sun in a fine weather, and the like. The combination for each real environment actually captures a skin image while changing the settings of the lighting device 10 and the imaging device 20, and evaluates to each expert whether the skin appearance in each image is close to the real environment. It is desirable to determine in advance.

  The display processing unit 81 refers to the storage unit 83 and causes the display device 74 to display a combination of the illumination condition and the camera parameter corresponding to the real environment to be evaluated. The evaluator can determine the combination of the illumination condition and the camera parameter corresponding to the evaluation condition by looking at the combination displayed on the display device 74 (S11 in FIG. 1).

  In addition, the display processing unit 81 causes the display device 74 to display a plurality of environment type information corresponding to the plurality of environment types stored in the storage unit 83, and according to a user's selection operation for the displayed plurality of environment type information. Thus, the actual environment to be evaluated may be specified. In this case, the evaluator selects and operates the type of the real environment to be evaluated this time from the plurality of environment type information displayed on the display device 74. The display processing unit 81 can extract the combination of the illumination condition and the camera parameter corresponding to the type of the selected real environment from the storage unit 83 and display them on the display device 74.

  According to such a modification, the evaluator can easily acquire the combination of the illumination condition and the camera parameter corresponding to the real environment as the evaluation condition. Further, according to the present modification, by allowing the evaluator to select the actual environment as the evaluation condition, the combination of the illumination condition and the camera parameter corresponding to the actual environment is automatically set in the illumination device 10 and the imaging device 20. You can also.

[Second modification]
In the above-described embodiment and the first modification, the imaging condition is set in the imaging device 20 as the camera parameter corresponding to the evaluation condition. In other words, the imaging device 20 of the skin evaluation support system 1 can adjust the imaging conditions. However, the camera 21 of the imaging device 20 is fixed, and the imaging device 20 may not be able to adjust the shooting conditions.

  As described above, when the photographing conditions cannot be adjusted, it may not be possible to flexibly cope with various observation methods. However, when it is sufficient to support skin evaluation using a limited observation method such as only global skin evaluation or only local skin evaluation, the camera 21 is positioned at a shooting position and a shooting angle suitable for any of the evaluations. It only has to be fixed. Also in such a second modification, it is possible to virtually realize various brightness environments on the captured image, and it is possible to efficiently perform skin evaluation under various illumination conditions.

  Examples will be given below to describe the above-described embodiment in more detail. In the following embodiments, a combination of illumination conditions and camera parameters actually determined for each actual environment assumed as an evaluation condition, and the actual skin is imaged by the illumination device 10 and the imaging device 20 in which the combination is set. The image which was done is illustrated. However, the contents of the above-described embodiment are not limited to the following contents.

  8, 9, and 10 show images obtained by the skin evaluation support system 1 in which the same person (subject) subjected to the foundation is captured by each combination of lighting conditions and camera parameters corresponding to three real environments. . On the right side of the image in each figure, combinations of used illumination conditions and camera parameters are shown. Illumination conditions include illuminance, position direction, illumination direction, and color (color temperature), and camera parameters include shutter speed (indicated as SP) and the distance between the camera 21 and the test skin (imaging conditions). ) Was set. As the illuminance, an actual measurement value measured by the illuminometer on the test skin is shown. Note that the autofocus function was stopped to prevent the camera parameters from being changed arbitrarily, and camera parameters other than the shutter speed were fixed (for example, the aperture value was fixed at F5.6). As the camera 21, a digital camera D7100 manufactured by Nikon Corporation was used.

  Moreover, in each figure, (a) and (b) differ in the distance (1.5 meters and 0.45 meters) between the camera 21 and the test skin as a camera parameter photographing condition. Represents the appearance of the skin under observation conditions for global skin evaluation, and (b) represents the appearance of the skin under observation conditions for local skin evaluation.

  FIG. 8 shows an image captured so as to reproduce the appearance of the test skin (makeup skin) in front of the bathroom vanity. In this case, the lighting direction direction as the lighting condition was set to only one direction from above according to the environment in front of the actual bathroom vanity. The lighting color was set to the standard color temperature of the light source installed in front of the actual bathroom vanity. The illuminance was set to the average illuminance in front of the actual bathroom vanity. The shutter speed was set to an optimum value by repeating the evaluation after actually taking an image under the illumination conditions.

  FIG. 9 shows an image captured so as to reproduce the appearance of the test skin (makeup skin) in the office. In this case, the lighting direction as the lighting condition was set in three directions from the top, left, and right according to the actual environment in the office. The illumination color was set to the standard color temperature of the light source installed in the actual office. The illuminance was set to the average illuminance per person's face in the actual office. The shutter speed was set to an optimum value by repeating the evaluation after actually taking an image under the illumination conditions. In the office environment, not only the illuminance is set higher than the environment in front of the bathroom vanity, but also by increasing the shutter speed, the amount of exposure is reduced and the brightness of the image is increased.

  FIG. 10 shows an image captured so as to reproduce the appearance of the test skin (makeup skin) outdoors during cloudy weather. In this case, the lighting direction as the lighting condition was set in three directions from the top, the left, and the right in accordance with the outdoor environment during actual cloudy weather. The illumination color was set to a color temperature that matched the color of the outdoor light during cloudy weather. About illuminance, the measured value at the time of making the said three direction light source in the illuminating device 10 output maximum is described. The shutter speed was set to an optimum value by repeating the evaluation after actually taking an image under the illumination conditions. In the outdoor environment, not only is the illuminance set higher than in the office environment, but the shutter speed is further increased to further reduce the amount of exposure and further increase the brightness of the image.

  8, 9, and 10, it can be confirmed that there is a difference in the appearance of the test skin in each image. This is particularly noticeable in the images shown in (b) of each figure, that is, in the images taken close to each other. Thus, it can be said that each image appropriately reproduces how the skin looks under each real environment. Furthermore, by evaluating the original color image of each figure, the appearance of the skin in each actual environment (in front of the bathroom vanity, in the office, and outdoors in cloudy weather) can be reproduced appropriately. Has been verified. Each of FIG. 8, FIG. 9 and FIG. 10B shows values obtained by converting the degree of conspicuous pores into numerical values based on the evaluation of experts using the color image.

Furthermore, the verification results are supplemented in terms of data by analyzing each image obtained by the skin evaluation support system 1 shown in FIGS. 8, 9, and 10 as follows.
FIG. 11 is a diagram showing a part of each image used for verification. FIG. 11A shows an image obtained by imaging the test skin from the same distance (1.5 meters) as the image of FIG. 8, FIG. 9 and FIG. 10A. FIG. The image by which test skin was imaged from the same distance (0.45 meter) as the image of (b) of a figure is shown.

Image data of the subject skin acquired by the imaging device 20 was taken into a PC (Personal Computer), and the image data of the target region shown in FIG. 11 was extracted from the image data in the PC. Specifically, the image data extracted from FIG. 11A shows a square image of 500 pixels in width and 500 pixels in height, and the image data extracted from FIG. A 2000 pixel square image is shown. In the extracted image data, a luminance value expressed in 256 gradations was calculated for each pixel. In the calculation of the luminance value, linear correction was performed. Then, from the appearance frequency of the luminance of each gradation, the standard deviation of the luminance gradation was calculated as follows.
The whole face in front of the bathroom vanity (Fig. 8 (a)) Standard deviation: 13.92
Front vanity part (Fig. 8 (b)) Standard deviation: 13.86
All faces in the office (Fig. 9 (a)) Standard deviation: 5.87
Inside the office (Fig. 9 (b)) Standard deviation: 5.59
Full face outdoors in cloudy weather (Fig. 10 (a)) Standard deviation: 6.82
Outdoor part during cloudy weather (Figure 10 (b)) Standard deviation: 6.94

Each value of the calculated standard deviation expresses unevenness of skin brightness. It can be understood that the unevenness of skin brightness indicates the degree of conspicuous pores. Therefore, according to each value of the standard deviation, it is shown that the degree of conspicuous pores is higher in front of the vanity than in other environments. This represents the same result as the expert's evaluation result (“pores”) using the image obtained by the skin evaluation support system 1.
The part in front of the bathroom vanity (Fig. 8 (b)) Pore: 4
Inside the office (Figure 9 (b)) Pore: 2
Outdoor part during cloudy weather (Figure 10 (b)) Pore: 2
Therefore, it is verified from the data side that the image obtained by the skin evaluation support system 1 appropriately reproduces the appearance of the skin under each actual environment.

  The above contents can also be specified as follows. However, the above-mentioned content is not limited to the following description.

<1> In a skin evaluation method using an image obtained by imaging a test skin illuminated by an illumination device capable of adjusting illumination conditions with an imaging device,
Set the lighting conditions in the combination of lighting conditions and camera parameters corresponding to the actual environment for evaluating the test skin in the lighting device, set the camera parameters in the combination in the imaging device,
The test skin illuminated by the lighting device under the set illumination conditions is imaged by the imaging device using the set camera parameters, thereby representing the appearance of the test skin in an actual environment to be evaluated. Take an image,
Skin evaluation method including that.

<2> The camera parameters set in the imaging device include at least one or all of a shutter speed, a frame rate, an aperture value, ISO (International Organization for Standardization) sensitivity, white balance, and the distance between the skin to be tested and the camera. Including,
<1> The skin evaluation method according to <1>.
<3> including setting a shutter speed as the camera parameter in the imaging device;
The skin evaluation method as described in <1> or <2>.
<4> A frame rate is set in the imaging device as the camera parameter,
Displaying the captured image on a display device in real time;
The skin evaluation method according to <1> or <2>.
<5> The illumination condition includes at least one or all of the number of illuminations, illumination illuminance, position direction, illumination direction, illumination color, and type of light source,
The skin evaluation method according to any one of <1> to <4>.
<6> including setting the position and direction of illumination as the illumination condition in the imaging apparatus,
The skin evaluation method according to any one of <1> to <5>.
<7> The position direction of the illumination condition includes irradiating from at least two directions, and the at least two directions include directions from the front and the upper side of the skin under test.
The skin evaluation method according to any one of <1> to <6>.
<8> The test skin is a skin to which cosmetics are applied.
The skin evaluation method according to any one of <1> to <7>.
<9> A skin evaluation support system using an image obtained by capturing an image of a test skin illuminated by an illumination device capable of adjusting illumination conditions,
Lighting conditions in a combination of lighting conditions and camera parameters corresponding to the actual environment for evaluating the test skin are set in the lighting device, camera parameters in the combination are set in the imaging device,
The test skin illuminated by the lighting device under the set illumination conditions is imaged by the imaging device using the set camera parameters, thereby representing the appearance of the test skin in an actual environment to be evaluated. Take an image,
Skin evaluation support system including that.
<10> The camera parameters set in the imaging device include at least one or all of a shutter speed, a frame rate, an aperture value, ISO (International Organization for Standardization) sensitivity, white balance, and the distance between the skin to be tested and the camera. Including,
<9> The skin evaluation support system according to <9>.
<11> including setting a shutter speed as the camera parameter in the imaging device,
<9> or <10> The skin evaluation support system according to <10>.
<12> including setting a frame rate in the imaging apparatus as the camera parameter;
A display device that displays the captured image in real time,
<9> or <10> The skin evaluation support system according to <10>.
<13> The illumination condition includes at least one or all of the number of illuminations, illumination illuminance, position direction, illumination direction, illumination color, and type of light source,
The skin evaluation support system according to any one of <9> to <12>.
<14> including setting a lighting direction and a lighting direction as the lighting condition in the lighting device,
The skin evaluation support system according to any one of <9> to <13>.
<15> The position direction of the illumination condition includes irradiating from at least two directions, and the at least two directions include directions from the front and the upper side of the skin under test.
The skin evaluation support system according to any one of <9> to <14>.
<16> The test skin is a skin to which cosmetics are applied.
The skin evaluation support system according to any one of <9> to <15>.
<17> The illumination device includes:
An upper light source box and a lower light source box that are long in the left-right direction, each having a light emitting surface that surrounds the test skin vertically and horizontally in a front view and is arranged on a vertical surface at a predetermined distance from the test skin in a side view. And a left light source box and a right light source box that are long in the vertical direction,
An upper light source support mechanism and a lower light source support mechanism that support the upper light source box and the lower light source box so as to be swingable in the vertical direction;
A left light source support mechanism and a right light source support mechanism that support the left light source box and the right light source box so as to be swingable in the left-right direction, and
A light control unit that switches the output of each light source of the upper light source box, the lower light source box, the left light source box, and the right light source box;
The illuminance, position direction, illumination direction and color can be adjusted as the illumination conditions.
The skin evaluation support system according to any one of <9> to <16>.
<18> The imaging device includes:
A camera,
A camera support mechanism for supporting the camera in a vertically swingable manner;
A first position adjustment mechanism capable of adjusting the vertical position of the camera support mechanism;
A second position adjustment mechanism capable of adjusting the position of the camera support mechanism in a direction approaching the chin rest and a direction away from the chin rest;
The distance between the test skin and the camera as the camera parameter can be adjusted,
The skin evaluation support system according to any one of <9> to <17>.
<19> Select a combination corresponding to the real environment to be evaluated from a plurality of combinations of lighting conditions and camera parameters corresponding to a plurality of types of real environments for evaluating the test skin.
Further including
Lighting conditions in the selected combination are set in the lighting device,
Camera parameters in the selected combination are set in the imaging device.
<1> The skin evaluation method according to <1>.
<20> The illuminance on the test skin in the imaging environment by the imaging device is different from the standard illuminance in a certain real environment for evaluating the test skin, and becomes a predetermined illuminance associated with the real environment. Set the output of the lighting device,
The imaging device has a shutter speed that is determined in advance according to a combination with the illuminance based on the output of the illumination device so that an image representing the appearance of the test skin in the real environment is simulated. Set to
The skin evaluation method as described in <1> or <19> including this.

DESCRIPTION OF SYMBOLS 1 Skin evaluation support system 10 Illuminating device 11 Light source box 11a Upper light source box 11b Lower light source box 11c Left light source box 11d Right light source box 12, 12a, 12b, 12c, 12d Light emission surface 13 Light source support mechanism 13a Upper light source support mechanism 13b Lower light source support mechanism 13c Left light source support mechanism 13d Right light source support mechanism 14, 14a, 14b, 14c, 14d Position adjustment mechanism 18 Light control unit 20 Imaging device 21 Camera 22 Camera support mechanism 23 First position adjustment mechanism 24 First Two-position adjustment mechanism 30 Jaw stand 70 Information processing device 71 CPU
72 Memory 73 Input / output I / F
74 display device 75 input device 81 display processing unit 83 storage unit

Claims (9)

In a skin evaluation method using an image obtained by imaging a test skin illuminated by an illumination device capable of adjusting illumination conditions with an imaging device,
The lighting conditions in the combination of lighting conditions and camera parameters that simulate shooting under an environment of a predetermined brightness are set in the lighting device, and the camera parameters in the combination are set in the imaging device,
The test skin illuminated by the lighting device under the set illumination conditions is imaged by the imaging device using the set camera parameters, thereby representing the appearance of the test skin in an actual environment to be evaluated. Take an image,
Skin evaluation method including that. The camera parameters set in the imaging device include at least one or all of a shutter speed, a frame rate, an aperture value, ISO (International Organization for Standardization) sensitivity, white balance, a distance between the skin to be tested and the camera,
The skin evaluation method according to claim 1. Including setting a shutter speed in the imaging device as the camera parameter,
The skin evaluation method according to claim 1 or 2. A frame rate is set in the imaging device as the camera parameter;
Displaying the captured image on a display device in real time;
The skin evaluation method of Claim 1 or 2 including this. The illumination conditions include at least one or all of the number of illuminations, illumination intensity, position direction, illumination direction, illumination color, light source type,
The skin evaluation method according to any one of claims 1 to 4. Including setting a lighting direction and a lighting direction as the lighting condition in the lighting device ,
The skin evaluation method according to any one of claims 1 to 5. The position direction of the illumination condition includes irradiating from at least two directions, and the at least two directions include directions from the front and the upper side of the test skin.
The skin evaluation method of any one of Claim 1 to 6. The test skin is skin to which cosmetics are applied.
The skin evaluation method of any one of Claim 1 to 7. A skin evaluation support system using an image obtained by imaging a test skin illuminated by an illumination device capable of adjusting illumination conditions with an imaging device,
Illumination conditions in a combination of illumination conditions and camera parameters that simulate shooting under an environment of a predetermined brightness are set in the illumination device, and camera parameters in the combination are set in the imaging device,
The test skin illuminated by the lighting device under the set illumination conditions is imaged by the imaging device using the set camera parameters, thereby representing the appearance of the test skin in an actual environment to be evaluated. Take an image,
Skin evaluation support system including that.