KR20190015809A - Apparatus for diagnosing biometric roughness - Google Patents

Abstract

The present invention relates to an apparatus for diagnosing biometric skin roughness which comprises: a main body (10) connecting a circular cone rode (15) to a lower side of a center rode; a detection means detecting light reflected from a plurality of lamps arranged inside of the main body (10) by using a CCD camera (36); and a controller (40) inputting a signal of the detection means and calculating a roughness operation value using a set algorithm. Accordingly, the apparatus for diagnosing biometric skin roughness can reduce influence of disturbance light while maintaining a smooth contact corresponding to a body part where mechanical fixation is difficult based on an optical method, thereby improving convenience and accuracy of diagnosing skin roughness diagnosis.

Description

[0001] Apparatus for diagnosing biometric roughness [

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a biological diagnosis apparatus, and more particularly, to a biological roughness diagnosis apparatus for detecting information on a skin of a specific body region of a subject in an image manner.

Generally, skin roughness of a subject is universally examined by visual observation or promotion, and more precisely, a USB objective microscope or the like is used, but it is generally dependent on the subjective judgment of the examiner. In addition, the stylus method for converting the movement of the stylus into an electric signal by scratching the skin requires direct contact, and thus inconvenience and cost are incurred in order to secure hygienic as well as a limitation that is difficult to apply to a smooth surface.

As prior art documents related to skin diagnosis, Korean Patent Registration No. 1206622 and Korean Patent Registration No. 0734865 are known.

The first step is to observe the rate of keratinocytes in the stratum corneum from the observation result of the scanning electron microscope and classify the number of keratinocytes to quantify the roughness of the stratum corneum. After application of the cosmetic, the following steps are carried out to quantify the roughness of the skin horny layer. Therefore, it is expected that the general public will be able to easily understand the evaluation results of skin moisturizing ability of cosmetics.

The latter includes two cameras that superimpose the surface of the skin; A laser module for scanning a reference line for matching the photographed image; A calibration module for correcting a camera device error; And a connection module for connecting the two cameras and the calibration modules to each other in a rotatable manner in three axes. Therefore, it is expected that the effect of the improvement before and after the skin care is judged quantitatively and visually.

However, according to the above-mentioned prior art, there is a possibility that the convenience and accuracy of measurement may be lowered when the skin of the body part is difficult to fix by mechanical fixation, and thus there is room for improvement.

Korean Patent Registration No. 1206622 entitled " Method for Evaluating the Skin Moisture of Cosmetics Measuring the Roughness of the Skin Horny Layer "(Publication Date: September 20, 2007). Korean Patent Registration No. 0734865 entitled " Apparatus and method for measuring three-dimensional skin "(Published date: June 23, 2007)

SUMMARY OF THE INVENTION It is an object of the present invention to overcome the above-mentioned problems of the related art by providing a method of detecting skin roughness while reducing the influence of disturbance light while maintaining smooth contact corresponding to a body part that is difficult to fix mechanically based on an optical system And to provide a diagnostic apparatus for a roughness of a living body which can be quantified.

In order to accomplish the above object, the present invention provides an apparatus for diagnosing roughness of a skin of a living body, the apparatus comprising: a body connected to a lower end of a center bar; Detecting means for detecting light reflected from a plurality of lamps arranged inside the main body with a CCD camera; And a controller for inputting a signal of the detecting means and outputting a roughness calculation value according to the set algorithm.

As a modification of the present invention, the main body is characterized in that a plurality of divided truncated cones are wrapped in a flexible sheet to maintain a conical structure.

In the detailed construction of the present invention, the detecting means is characterized by comprising an upper lamp which irradiates downward from the center bar, and a side lamp which irradiates laterally from the frustum.

In another modification of the present invention, the detecting means further comprises a moisture sensor for detecting the moisture state of the skin.

In a detailed configuration of the present invention, the controller sequentially calculates brightness by using a reflected light image of an upper lamp, a side lamp on one side, and a side lamp on the other side, calibrates an error caused by the brightness difference through calibration, And the surface roughness is calculated by arithmetic mean.

As described above, according to the present invention, it is possible to reduce the influence of disturbance light while maintaining soft contact in correspondence to a body part which is difficult to fix mechanically based on an optical system, thereby improving convenience and accuracy of skin roughness diagnosis.

In addition, it can be used as an objective basis in evaluating the efficacy of various drugs, cosmetics, and procedures, and it is possible to measure the roughness in materials and fields that are difficult to measure in a conventional manner as well as the human body.

1 is a block diagram generally illustrating an apparatus according to the present invention;
2 is a configuration diagram showing a modification of the apparatus according to the present invention
Figure 3 is a block diagram showing the main circuit connections of the device according to the invention
Figure 4 is a flow chart illustrating the control algorithm of the device according to the invention

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention proposes a device for diagnosing the roughness of the skin of a living body, in particular, a technique employing a non-contact optical method. Conventional optical roughness measurement methods are optical cutting type and optical interference type. The optical cutting method is to measure the optically cut surface by irradiating light in a certain direction with a microscope, and a microscope should be applied to the fixed small material. The optical interferometer measures the light wave interference pattern caused by the superimposition of light reflected by the reference reflection surface and the surface to be measured by a microscope and can be used only on a surface that reflects light well and is sensitive to vibration. All of the above methods are unsuitable for measuring the roughness of the body skin.

The body 10 according to the present invention has a structure in which a trunnion 15 is connected to the lower side of the center bar 11. [ The main body 10 has a center bar 11 at a vertex position of a trunk 15 having a conical cap shape. In measuring the roughness of the body having many bends, the diameter of the lower end of the truncated cone 15 is 3 cm and the height of 3 cm is advantageous in terms of blocking external light, but the present invention is not limited to these dimensions. It is preferable that the inner surface of the frusto-conical base 15 is coated with a material that absorbs the reflected light inside.

As a modification of the present invention, the main body 10 is characterized in that a plurality of divided circumferential ridges 15 are wrapped in a flexible sheet 16 to maintain a conical structure. 2 illustrates a state in which the truncated cone 15 is divided into four pieces and fixed to the center piece 11 while the conical piece 15 is wrapped around the entirety of the flexible sheet 16 to form a conical hat. The flexible sheet 16 is made of a material that absorbs reflected light from the inside, and is in close contact with the skin at the lower end to shield external light.

2, an arc-shaped pad 21 or a binding band 25 is used for a portion which is narrow like a finger and is severely curved. The arcuate pad 21 is thick in its center and is joined to the frusto-conical 15 through the fitting groove 23. The binding band 25 is constituted by joining a Velcro tape or the like at two points opposed to each other at the lower end of the trunnion 15. This prevents the external light from flowing into the arcuate pad 21 and suppresses the swinging of the main body 10 with the binding band 25. [

Further, according to the present invention, the detection means detects light reflected from a plurality of lamps arranged inside the main body 10 with the CCD camera 36. [ A plurality of lamps for irradiating light with a target TG set on the skin as a detection means, and a CCD camera 36 for acquiring an image by light reflected from the target TG. The CCD camera 36 is installed on the upper side of the through hole 12 formed on the bottom surface of the center frame 11. [

The detecting means includes an upper lamp 31 which irradiates downward from the center table 11 and a side lamp 32 which irradiates laterally from the frustrum 15 . The upper lamps 31 are dispersed in the periphery of the through hole 12 in the bottom surface of the center stand 11 or arranged in a ring shape. The side lamps 32 are arranged so as to be opposite to each other in a slightly raised position at the lower end of the trunnion 15, but are oriented so as not to directly enter the CCD camera 36 on the upper side. It is preferable that the upper lamp 31 and the side lamp 32 use LEDs. As an example of the design, the side lamps 32 are mounted with 3 mm diameter LEDs at a height of 3 mm from the lower end of the frustum 15.

In another modification of the present invention, the detecting means further comprises a moisture sensor (34) for detecting the moisture state of the skin. The moisture sensor 34 is preferably a near-infrared ray spectroscopy system that can be installed in a non-contact manner on the center bar 11, but it may be constituted by a capacitance type using a contact type electrode and a permittivity sensor. In the latter case, an electrode is disposed at the lower end of the frusto-conical base 15 to prevent disturbance light from being generated. The use of the moisture sensor 34 is because the moisture content is a factor affecting the roughness of the skin.

Further, according to the present invention, the controller 40 inputs the signal of the detection means and outputs the roughness calculation value by the set algorithm. The controller 40 can be configured as a computer connected by a cable to the center stand 11 of the main body 10 or in a form that can be operated independently. In any case, the controller 40 comprises a microcomputer circuit having a storage unit 42, an I / O unit 44, and a display unit 46 mounted thereon, based on a microprocessor. The storage unit 42 stores an algorithm for calculating the roughness of the skin, and the display unit 46 calculates the roughness of the skin and displays the numerical value and the graphic.

As a detailed configuration of the present invention, the controller 40 sequentially calculates the brightness by the reflected light image by the upper lamp 31, the side lamp 32 on one side, and the side lamp 32 on the other side, And the surface roughness is calculated by an arithmetic mean using a mean function.

An example of the operation by the controller 40 will be described with reference to the flowchart of Fig. 4, and the target area (1 cm x 1 cm) is defined as the target (TG) with the above-described 3 cm diameter frustum 15.

At the start of the operation, the upper lamp 31 is turned on to irradiate the target vertically and the photographing is performed. The second photographing is performed simultaneously with the lighting of the one side lamp 32 and the second photographing of the other side lamp 32 The third image is taken at the same time as the light is turned on, and the image is acquired. The brightness (α) (β) (γ) information of the three images is processed as digital data by using the color and brightness value as pixel coordinates.

The surface roughness calculation equation of the first step is calculated as shown in the following [Equation 1]. The difference between the pixel value by the upper lamp 31 and the pixel value by the both side lamps 32 is the roughness and the both side values are added and corrected.

[Equation 1]? =? {|? I-? I | + | alpha i-yi | } - k

The brightness due to the irradiation of the two side lamps 32 symmetrical with respect to the measurement target is used to eliminate the error due to the difference in luminous intensity depending on the distance during irradiation of the one side lamp 32. [ A constant (k) is determined by calibration using a reference plate (not shown) having standard roughness and color. By using the difference from the image value by the vertical upper lamp 31, the effect of the brightness difference due to the color difference is canceled.

The surface roughness calculation equation of the second step is calculated as shown in the following [Equation 2]. (Α) -mean (β + γ) is defined as mean (Δ) = mean (Δ) and the surface with no roughness is assumed to be Σ {αi- (βi + γi )} = mean ([Delta]) is established, so that [Expression 2] is applied.

[Equation 2]? =? |? - (? I +? I) - mean (?) |

The processed data is displayed on the screen of the controller 40 or on a display capable of independent operation. Draw a graph of the change in roughness according to the sequential survey, and make the part deviating from the linear value rough.

On the other hand, the color of the upper lamp 31 and the side lamp 32 to be used can be differently selected according to the color of the target. The numerical values of the skin tones are also data can do. After the image is picked up by the white upper lamp 31, the optimum light source is selected according to the state or color of the surface of the specimen, and the inspection is performed. The brightness of the image by the upper specimen lamp 31, Can be measured.

Of course, the present invention is applicable to an in vitro precision semiconductor surface inspection and the like. In any case, the principle of comparing the value that varies with the change of the illumination in the unit of the pixel which is the fixed coordinate is the same.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention. It is therefore intended that such variations and modifications fall within the scope of the appended claims.

10: Main body 11:
12: through hole 15:
16: flexible sheet 21: arched pad
23: fitting groove 25: coupling band
31: upper lamp 32: side lamp
34: Moisture sensor 36: CCD camera
40: controller 42:
44: I / O unit 46: Display unit

Claims (5)

An apparatus for diagnosing a roughness of a skin of a living body, comprising:
A main body 10 connected to a lower end of the center bar 11 by a trunnion 15;
Detecting means for detecting light reflected from a plurality of lamps arranged inside the main body (10) with a CCD camera (36); And
And a controller (40) for inputting a signal of the detecting means and outputting a roughness calculation value by a set algorithm. The method according to claim 1,
Wherein the main body (10) has a conical structure by wrapping a plurality of divided frustoconical members (15) with a flexible sheet (16). The method according to claim 1,
Characterized in that the detecting means comprises an upper lamp (31) for irradiating downward from the center table (11), and a side ramp (32) for irradiating laterally from the frustum (15). The method according to claim 1,
Wherein the detecting means further comprises a moisture sensor (34) for detecting the moisture state of the skin. The method according to claim 1,
The controller 40 sequentially calculates the brightness of the reflected light image by the upper lamp 31, the side lamp 32 on one side, the side lamp 32 on the other side, calibrates the error by the brightness difference through calibration, and calculating a surface roughness by an arithmetic mean using a mean function.

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