JP5812719B2 - Data processing method and data comparison method for hair image - Google Patents

Description

  The present invention relates to a data processing method and a data comparison method for a hair photographic image, and more particularly to a data processing method and a data comparison method for a hair photographic image for quantifying the amount of hair.

With the recent development of hair growth agents and the development of hair growth treatments, it is required to quantitatively handle the effects of using hair growth agents and the effects of hair growth treatments.
In general, when verifying these effects, record the personal impressions of subjects who use hair growth agents or receive hair growth treatment, and receive personal feedback from multiple subjects. It is done by scoring and summing up the scores.
However, in the case of such treatment, even if it is possible to score personal impressions that can realize the effect of hair growth, it is possible to achieve a specific amount of hair growth. It is difficult to calculate a quantitative value for the point.

On the other hand, as a method for examining the hair growth effect, a method for determining the presence or absence of hair growth-inducing ability of hair papilla cells has been proposed (Patent Document 1).
However, this method can only examine the degree of hair growth-inducing ability of dermal papilla cells. For this reason, the method for testing the hair growth effect described above did not give any knowledge about the quantitative change in the amount of hair of subjects who actually used hair growth agents or received hair growth treatment. .

Furthermore, a technique that can visualize the degree of damage to hair as a two-dimensional image has also been proposed (Patent Document 2).
Specifically, when an ion image sensor that detects the ion concentration is used to arrange the sensing units that come into contact with the hair or the like in two dimensions, and the ion concentration detected by the sensing unit can be output as two-dimensional image data. Is done.
However, this prior art also does not change in that quantitative knowledge about the change in the amount of hair of a subject who actually uses a hair growth agent or undergoes hair growth treatment cannot be obtained.

Japanese Patent No. 4424975 JP 2010-122090 A

As explained above, there is no quantitative test method focusing on specific hair volume, and the hair medical industry, hair esthetic industry, barber industry, etc. have made subjective judgments about the hair volume based on the appearance impression. It is a fact.
An object of the present invention is to provide a data processing method and a data comparison method of an objective hair photographed image that enables quantification of the hair volume of a subject.

  As a result of intensive studies by the present inventors in order to solve the above-mentioned problem, a two-tone image obtained by binarizing a hair image obtained by imaging the head including the crown from above is divided into a plurality of parts, The present inventors have found that a data processing method of a hair photographic image that displays a binary ratio for each of a plurality of portions and a data comparison method using the processing method meet the purpose of the present invention, and have completed the present invention.

That is, the present invention
[1] A method for processing a hair-captured image obtained by photographing the head including the top of the head from above the subject,
Determining an outer periphery of the head imaged in the hair-captured image;
Binarizing the hair image taken inside the outer periphery to obtain a two-tone image;
Dividing the two-tone image into a plurality of portions;
Displaying a binary ratio of the two-tone image for each of the plurality of divided portions;
Using a data processing method for a hair-captured image ,
A binary image of a two-tone image displayed for each of a plurality of parts obtained by the data processing method of the hair-captured image, using a hair-captured image obtained by capturing the direction of the top of the head from the head of the subject before the hair thickening treatment The ratio (A) of
Using a hair photographed image obtained by photographing the head direction from the head of the subject after hair thickening treatment, the binary image of the two-tone image displayed for each of the plurality of parts obtained by the data processing method of the hair photographed image Ratio (B)
Having a step of comparing
The binary ratio (A) of the two-tone image displayed for each of the plurality of parts and the binary ratio (B) of the two-tone image displayed for each of the plurality of parts. The present invention provides a method for comparing data of hair photographed images, including a step of displaying a difference .

The present invention also provides
[2] The method for comparing data of hair photographic images according to [1] above, wherein the outer periphery of the head determined by the step of determining the outer periphery of the head reflected in the hair photographic image is a circumference or an ellipse circumference. It is to provide.

The present invention also provides
[3] The step of binarizing the hair-captured image inside the outer periphery of the head to obtain a two-tone image is a step of obtaining two or more two-tone images by performing binarization on the basis of two or more threshold values. Including
The step of displaying the binary ratio of the two-tone image for each of the plurality of divided portions includes the step of displaying the average of the binary ratio of two or more two-tone images for each portion. The present invention provides a method for comparing data of hair-captured images as described in [1] or [2].

The present invention also provides
[4] The step of displaying the binary ratio of the two-tone image for each of the plurality of divided portions includes the step of displaying the binary ratio of the two-tone image as a two-dimensional image. ]-[3] The data comparison method of the hair photographic image described in any one of the above is provided.

The present invention also provides
[ 5 ] The outer periphery of the head used when obtaining the binary ratio (A) of the two-tone image displayed for each of the plurality of portions;
The relationship with the outer periphery of the head used when obtaining the binary ratio (B) of the two-tone image displayed for each of the plurality of parts is as follows:
A reference point 1 of the hair-captured image inside the outer circumference corresponding to the intersection of a straight line passing through the right mouth corner edge and the right eye corner edge of the front face image of the subject's face and a straight line serving as a boundary between the facial muscles and the scalp;
A reference point 2 of the hair-captured image on the inner side of the outer circumference corresponding to an intersection of a straight line passing through the left mouth corner edge and the left eye corner edge of the front image of the subject's face and a straight line serving as a boundary between the expression muscle and the scalp;
A reference point 3 indicating the center of the subject's toothpick in the hair image taken inside the outer circumference;
The method for comparing the data of the hair-captured images according to any one of [1] to [4] , which is substantially the same with respect to each other, is provided.

According to the data processing method for a hair-captured image of the present invention, it is possible to provide a determination material that can quantitatively handle the amount of hair that has conventionally relied on qualitative evaluation determination.
In addition, by performing binarization with different threshold values using the hair image, data processing of the hair image with two or more two-tone images can be used to accurately quantify the light and dark portions of the hair. Can be
Further, according to the present invention, it is possible to compare the subject's hair photographed image before the hair growth treatment with the subject's hair photographed image after the hair growth treatment as quantitative data.

FIG. 1 is a front view of a subject for explaining a reference point when photographing the subject's head. FIG. 2 is a drawing-substituting photograph showing a hair-captured image obtained by photographing the head including the top of the head from above the subject. FIG. 3 is a drawing-substituting photograph showing the outer periphery of the head in the hair image. FIG. 4 is a drawing-substituting photograph showing a two-tone image of the hair photographed image. FIG. 5 is a schematic diagram for explaining an operation of dividing a two-tone image into a plurality of portions. FIG. 6 is a drawing-substituting photograph showing the hair image of subject A. FIG. 7 is a two-tone image obtained by setting the threshold value to 20 on the hair image of the outer circumference of the head of the subject A. FIG. 8 is a two-tone image obtained by setting the threshold value to 40 for the hair image of the outer circumference of the head of the subject A. FIG. 9 is a two-tone image obtained by setting the threshold value to 60 for the hair image of the outer periphery of the head of the subject A. FIG. 10 is a two-tone image obtained by setting the threshold value to 80 for the hair-captured image of the outer circumference of the head of the subject A. FIG. 11 is a drawing-substituting photograph showing a hair-captured image of subject A. FIG. 12 is a two-tone image obtained by setting the threshold value to 20 for the hair image of the outer circumference of the head of the subject A. FIG. 13 is a two-tone image obtained by setting the threshold value to 40 for the hair image of the outer circumference of the head of the subject A. FIG. 14 is a two-tone image obtained by setting the threshold value to 60 for the hair image of the outer periphery of the head of the subject A. FIG. 15 is a two-tone image obtained by setting the threshold value to 80 for the hair image of the outer periphery of the head of the subject A. FIG. 16 is a drawing-substituting photograph showing a hair-captured image of subject B. FIG. 17 is a two-tone image obtained by setting the threshold value to 20 on the hair image of the outer circumference of the head of subject B. FIG. 18 is a two-tone image obtained by setting the threshold value to 40 for the hair image of the outer circumference of the head of the subject B. FIG. 19 is a two-tone image obtained by setting the threshold value to 60 for the hair image of the outer circumference of the head of the subject B. FIG. 20 is a two-tone image obtained by setting the threshold value to 80 for the hair-captured image of the outer circumference of the head of subject B. FIG. 21 is a drawing-substituting photograph showing the hair-captured image of subject B. FIG. 22 is a two-tone image obtained by setting the threshold value to 20 for the hair image of the outer circumference of the head of the subject B. FIG. 23 is a two-tone image obtained by setting the threshold value to 40 for the hair image of the outer circumference of the head of subject B. FIG. 24 is a two-tone image obtained by setting the threshold value to 60 for the hair image of the outer circumference of the head of the subject B. FIG. 25 is a two-tone image obtained by setting the threshold value to 80 for the hair image of the outer circumference of the head of subject B. FIG. 26 is a drawing-substituting photograph showing a hair-captured image of the subject C. FIG. 27 is a two-tone image obtained by setting the threshold value to 20 for the hair image of the outer circumference of the head of the subject C. FIG. 28 is a two-tone image obtained by setting the threshold value to 40 with respect to the hair-captured image of the outer periphery of the head of the subject C. FIG. 29 is a two-tone image obtained by setting the threshold value to 60 for the hair image of the outer periphery of the head of the subject C. FIG. 30 is a two-tone image obtained by setting the threshold value to 80 for the hair image of the outer circumference of the head of the subject C. FIG. 31 is a drawing-substituting photograph showing a hair-captured image of subject C. FIG. 32 is a two-tone image obtained by setting the threshold value to 20 with respect to the hair-captured image of the outer circumference of the head of the subject C. FIG. 33 is a two-tone image obtained by setting the threshold value to 40 for the hair image of the outer periphery of the head of the subject C. FIG. 34 is a two-tone image obtained by setting the threshold value to 60 for the hair image of the outer circumference of the head of the subject C. FIG. 35 is a two-tone image obtained by setting the threshold value to 80 for the hair image of the outer circumference of the head of subject C. FIG. 36 is a drawing-substituting photograph showing a hair-captured image of subject D. FIG. 37 is a two-tone image obtained by setting the threshold value to 20 for the hair image of the outer periphery of the head of subject D. FIG. 38 is a two-tone image obtained by setting the threshold value to 40 with respect to the hair photograph image of the outer periphery of the head of the subject D. FIG. 39 is a two-tone image obtained by setting the threshold value to 60 for the hair image of the outer circumference of the head of the subject D. FIG. 40 is a two-tone image obtained by setting the threshold value to 80 for the hair-captured image of the outer periphery of the head of the subject D. FIG. 41 is a drawing-substituting photograph showing the hair image of subject D. FIG. 42 is a two-tone image obtained by setting the threshold value to 20 with respect to the hair photographed image of the outer periphery of the head of the subject D. FIG. 43 is a two-tone image obtained by setting the threshold value to 40 with respect to the hair photograph image of the outer periphery of the head of the subject D. FIG. 44 is a two-tone image obtained by setting the threshold value to 60 for the hair-captured image of the outer periphery of the head of the subject D. FIG. 45 is a two-tone image obtained by setting the threshold value to 80 for the hair image of the outer periphery of the head of subject D. FIG. 46 is a drawing-substituting photograph showing the hair image of subject E. FIG. 47 is a two-tone image obtained by setting the threshold value to 20 on the hair image of the outer periphery of the head of the subject E. FIG. 48 is a two-tone image obtained by setting the threshold value to 40 for the hair image of the outer circumference of the head of the subject E. FIG. 49 is a two-tone image obtained by setting the threshold value to 60 for the hair image of the outer circumference of the head of the subject E. FIG. 50 is a two-tone image obtained by setting the threshold value to 80 for the hair image of the outer circumference of the head of the subject E. FIG. 51 is a drawing-substituting photograph showing the hair image of subject E. FIG. 52 is a two-tone image obtained by setting the threshold value to 20 on the hair image of the outer periphery of the head of the subject E. FIG. 53 is a two-tone image obtained by setting the threshold value to 40 with respect to the hair photographed image of the outer periphery of the head of the subject E. FIG. 54 is a two-tone image obtained by setting the threshold value to 60 for the hair image of the outer periphery of the head of the subject E. FIG. 55 is a two-tone image obtained by setting the threshold value to 80 for the hair image of the outer circumference of the head of the subject E. FIG. 56 is a drawing-substituting photograph showing the hair image of subject F. FIG. 57 is a two-tone image obtained by setting the threshold value to 20 for the hair image of the outer circumference of the head of the subject F. FIG. 58 is a two-tone image obtained by setting the threshold value to 40 for the hair image of the outer periphery of the head of the subject F. FIG. 59 is a two-tone image obtained by setting the threshold value to 60 for the hair image of the outer periphery of the head of the subject F. FIG. 60 is a two-tone image obtained by setting the threshold value to 80 for the hair image of the outer periphery of the head of the subject F. FIG. 61 is a drawing-substituting photograph showing a hair-captured image of subject F. FIG. 62 is a two-tone image obtained by setting the threshold value to 20 for the hair image of the outer circumference of the head of the subject F. FIG. 63 is a two-tone image obtained by setting the threshold value to 40 for the hair image of the outer circumference of the head of the subject F. FIG. 64 is a two-tone image obtained by setting the threshold value to 60 for the hair image of the outer periphery of the head of the subject F. FIG. 65 is a two-tone image obtained by setting the threshold value to 80 for the hair image of the outer periphery of the head of the subject F.

First, a data processing method for a hair-captured image according to the first embodiment of the present invention will be described.
First, an image of the subject's hair is taken. Although there is no limitation on the method for capturing an image of the subject's hair, an example will be described as follows.
First, have the subject stretch his back and sit down on the chair. The subject takes a posture in which the back is stretched and the face is raised and the front is viewed.
Next, the head including the top of the head is photographed from above the subject.

FIG. 1 is a front view of a subject for explaining a reference point when photographing the subject's head.
As shown in FIG. 1, a straight line passing through the right mouth corner edge 5 and the right eye corner edge 6 of the front image of the face of the subject 4 (shown by a one-dot broken line AA in FIG. 1), and the facial muscle 7 and the scalp 8. A reference point 1 is an intersection of straight lines (denoted by a one-dot broken line BB in FIG. 1) serving as a boundary.
Similarly, the reference point 2 is an intersection of a straight line passing through the left mouth corner edge and the left eye corner edge of the front image of the face of the subject 4 and a straight line serving as a boundary between the facial expression muscle 7 and the scalp 8.
Here, the facial expression muscle 7 refers to a portion that moves in accordance with the movement of the eyebrow when the eyebrow is moved greatly, and the scalp 8 refers to a portion that does not move even when the eyebrow is moved greatly.
Further, the reference point 3 is the center of the subject's 4 toothpick.
By specifying the reference points 1 to 3 with respect to the subject 4 in this way, the reference points 1 to 3 can be used as a reference thereafter, and data processing between hair photographed images at substantially the same position of the same subject can be performed. It becomes possible.
Here, “substantially the same” includes the case where they are completely the same and the case where they are almost the same. When the percentage (%) rounded off is within 5%.

When photographing the head including the top of the head from above the subject, it is preferable to photograph so that the reference points 1 and 2 of the subject are located above or below the hair photographed image.
Therefore, for example, in order to position the reference points 1 and 2 of the subject at the upper end of the hair-captured image, when photographing the head including the top from the subject's head, It is preferable to shoot from a slightly diagonally upward direction on the back side.

  The image photographing means used in the present invention is not limited. For example, a commercially available digital electronic camera, an optical camera using a photosensitive film, or the like can be used.

FIG. 2 is a drawing-substituting photograph showing a hair-captured image obtained by photographing the head including the top of the head from above the subject.
In FIG. 2, points corresponding to the reference points 1 and 2 in FIG. The center of the toothpick is the reference point 3.

First, the outer circumference of the head that appears in the hair image is determined.
Here, the head means a portion where hair grows. For this reason, the part where the hair does not grow, such as eyelids, ears, nose, chin and mouth of the subject, and the part which is not the hair such as eyelashes, eyebrows and eyelids are excluded from the head.

In the hair photographed image, the portion including the head and the hair and the other portion have different data relating to the color tone, brightness, and saturation contained in the hair photographed image. By utilizing the difference in the data, it is possible to distinguish the portion including the head and the hair from the other portion.
For this reason, it is possible to determine the outer periphery of the head imaged in the hair image by using at least one data such as color tone, brightness, and saturation contained in the hair image.

When determining the outer periphery of the head shown in the hair photographed image, a circle or an ellipse can be used to approximate the outer periphery.
Using the circle or ellipse, the circle or ellipse having the largest area in which the subject's head is the most in the circle or ellipse and the portion other than the subject's head is the least is determined. In the case where the outer periphery of the head and the outer periphery of the head hair photographed image include a portion of the subject's eyelids, ears, nose, chin, mouth, etc. where the hair does not grow, or portions that are not hair such as eyelashes, eyebrows, eyelids, etc. It is preferable to perform the subsequent processing on the assumption that these portions have no hair.
FIG. 3 shows an example of the outer periphery of the head shown in the hair photographed image determined in this way.

FIG. 3 is a drawing-substituting photograph showing the outer periphery of the head in the hair image.
As shown in FIG. 3, the outer periphery of the head can be determined by a circle, and the head portion can be cut out from the hair photographed image by the outer periphery.
Further, by matching the reference points 1 to 3 described with reference to FIG. 2 with the circle or ellipse described with reference to FIG. 3, it is possible to compare two or more captured hair images of the same subject.

Next, the captured hair image inside the outer periphery of the head is binarized to obtain a two-tone image.
FIG. 4 is a drawing-substituting photograph showing a two-tone image of the hair photographed image.
Here, binarization of the hair image is representative of, for example, a combination of white and black, for example, a hair image including only brightness data among the three attributes of color, hue, saturation, and brightness. The two-tone image means an image represented by two data represented by a combination of white and black, for example.

In the present invention, by matching the brightness of the images before and after binarizing the hair photographed image, only the brightness data can be extracted from the hair photographed image data including the hue, saturation and brightness.
In this way, the outer periphery and the hair-captured image inside the outer periphery are binarized to obtain a two-tone image. For example, when the brightness of the two-tone image is expressed by white and black, the portion where the hair is thin can be expressed by white and the portion where the hair is dark can be expressed by black.

FIG. 5 is a schematic diagram for explaining an operation of dividing a two-tone image into a plurality of portions.
There is no limitation on the method of dividing the two-tone image into a plurality of portions, and there is no limitation as long as each method of comparing the two-tone images can be compared.

In FIG. 5, a grid 11 composed of vertical lines and horizontal lines is used as a specific means for dividing the two-tone image 10 into a plurality of portions 12.
The ratio of the white and black portions of the two-tone image of each portion 12 in the grid 11 shown in FIG. 5 is calculated. It should be noted that the portion outside the outer periphery of the head that appears in the previously-captured hair image is treated as having no hair.
For example, if the black occupying the area of the portion 12 is 100%, it is 10 points, and if it is less than 100% 90% or more, it is 9 points. If it is less than% and 0%, it is expressed as 0 point.

Subsequently, the data processing of the hair-captured image can be performed by displaying the binary ratio of the two-tone image 10 for each of the plurality of divided portions 12.
As a method for displaying the binary ratio of the two-tone image, for example, each of the parts of the grid-like table having the same total number as the plurality of divided parts is displayed in the white of the two-tone image previously calculated. Substitute the ratio of the black part and present,
Presented as color information having saturation and lightness corresponding to the ratio of the white and black portions of the previously calculated two-tone image on the grid-like table portion having the same total number as the plurality of divided portions. And the like.
The grid-like table can also be displayed on a video monitor.
As described above, according to the data processing method for the hair-captured image according to the first embodiment of the present invention, it is possible to quantitatively grasp the information about the hair amount of the subject.

Next, a data processing method for a hair-captured image according to the second embodiment of the present invention will be described.
The second embodiment is a modification of the first embodiment.
According to the first embodiment, the subject's hair image can be binarized, and the amount of the subject's hair can be quantitatively handled based on the obtained two-tone image.
However, the obtained two-tone image may change depending on how much the threshold value for binarizing the hair image is set.
For this reason, although the hair exists, the case where the hair imaging | photography image obtained from the test subject with the very few quantity exists is assumed. It may not be possible to distinguish whether there is no hair on the subject's head at all or only a small amount of hair is present on the head by simply referring to the two-tone image of the hair image. As described above, although the data processing method for the hair-captured image according to the first embodiment is suitable for grasping the rough hair amount of the subject, it may not be easy to grasp the fine hair amount.
On the other hand, the second embodiment of the present invention is a data processing method for a captured hair image suitable for grasping the minute hair volume of the subject.

  In the second embodiment of the present invention, in addition to the first embodiment, the step of binarizing the outer periphery of the head and the captured hair image inside the outer periphery to obtain a two-tone image has two or more threshold values. It includes a step of obtaining two or more two-tone images by performing binarization as a reference.

  The threshold value used in the present invention is, for example, a case where a combination of white and black is described.If the ratio of the white area to the unit area obtained by adding the white area and the black area is equal to or greater than a predetermined value, the unit The area is treated as white, and if it is less than the predetermined value, it means that the unit area is treated as black. By processing the hair photographed image for each unit area using the predetermined value as a threshold, the hair photographed image can be binarized for each unit area and converted into a two-tone image.

In the present invention, the threshold value 0 means that all data of a two-tone image is handled as white. The threshold value 100 means that all data is handled as a single black color.
On the basis of this, for example, the threshold 20 is the unit area when white and black are mixed in the unit area and the ratio of the black area to the total area of white and black is 80% or more. If it is treated as black and less than 80%, it means that the unit area is treated as white.
Similarly, for example, the threshold value 40 is such that when white and black are mixed in the unit area, the unit area is treated as black when the ratio of the black area to the total area of white and black is 60% or more. If it is less than 60%, it means that the unit area is treated as white.
Similarly, for example, the threshold 60 is such that when white and black are mixed in the unit area, the unit area is treated as black when the ratio of the black area to the total area of white and black is 40% or more. If it is less than 40%, it means that the unit area is treated as white.
Similarly, for example, the threshold 80 is such that when white and black are mixed in the unit area, the unit area is treated as black when the ratio of the black area to the total area of white and black is 20% or more. If it is less than 80%, it means that the unit area is treated as white.
As described above, the threshold value is a numerical value of 0 or more and 100 or less, and as the threshold value is larger, the black portion in the two-tone image increases.

The binarized two-tone image of the hair photographed image is expressed by the set of unit areas. If the unit area is set small, the binarized hair photographed image becomes clearer, and if the unit area is set large, the binarized hair photographed image becomes unclear.
For this reason, it is preferable that the unit area used for the threshold is sufficiently smaller than a plurality of portions obtained by dividing the binarized hair photographed image.

Next, the second embodiment will be specifically described.
First, the hair-captured image inside the outer periphery of the head is binarized by the same method as in the first embodiment to obtain a two-tone image.
Next, a two-tone image is similarly obtained by changing the threshold value.
Next, for each of the obtained two-tone images having different threshold values, the two-tone image is divided into a plurality of parts by a grid as in the case of the first embodiment.
Next, for each of the plurality of divided portions, a binary ratio of each of two or more two-tone images having different contrasts is displayed as a two-dimensional image.
Next, the ratio of each displayed binary value is averaged for each of a plurality of divided portions and displayed as a two-dimensional image.
In this way, by performing data processing of the hair-captured image while changing the threshold value, it is possible to quantify the amount of hair of the minute subject in the hair-captured image.

Next, a data comparison method for hair-captured images according to the third embodiment of the present invention will be described.
The third embodiment is a method for comparing data of hair photographic images to which the first embodiment of the present invention is applied.
First, in accordance with the first embodiment, the outer periphery of the head and the hair image inside the outer periphery before the subject's hair growth treatment is binarized to obtain a two-tone image.
Then, using the two-tone image, the binary ratio (A) of the two-tone image displayed for each of the plurality of portions by the grid is obtained as in the case of the first embodiment.

  Subsequently, hair growth treatment is performed on the subject. After that, according to the first embodiment, the captured hair image inside the outer circumference of the subject's head is binarized to obtain a two-tone image.

Then, a binary ratio (B) of the two-tone image displayed for each of the plurality of portions by the grid is obtained using the two-tone image.
The difference between the binary ratios (A) and (B) of the two-tone image displayed for each of the plurality of parts by the grid is obtained, and the difference value displayed for each of the plurality of parts by the grid is, for example, divided The difference between the previously calculated binary ratios (A) and (B) of the two-tone image is displayed on each part of the grid-like table having the same total number as the plurality of parts.
From the difference between the binary ratios (A) and (B) of the two-tone image obtained in this way, the degree of hair increase corresponding to the time of hair growth treatment can be quantitatively expressed as a numerical value. .

Next, a data comparison method for hair-captured images according to the fourth embodiment of the present invention will be described.
The fourth embodiment uses the data processing method of the hair photographic image of the second embodiment instead of the data processing method of the hair photographic image of the first embodiment used in the previous third embodiment. The point is different.
The rest is the same as in the third embodiment.
According to the fourth embodiment, by using a two-tone image having two or more different threshold values in the case of the third embodiment, a finer change in the amount of the subject's hair in the hair photographed image can be quantified. Can be compared.

  EXAMPLES Hereinafter, the present invention will be described in detail with reference to examples, but the present invention is not limited to the following examples.

Example 1 shows a data processing method and a data comparison method for a hair-captured image for quantitatively indicating the degree of hair growth before and after the hair growth treatment by the subject A.
FIG. 6 is a drawing-substituting photograph showing the hair image of subject A.

The hair-captured image of the subject A was taken with a commercially available electronic camera by the same method as the method shown in the first embodiment.
Next, the reference points 1 to 3 shown in the previous first embodiment were set, and the outer circumference of the head of the subject A shown in the hair photographed image of FIG. 6 was determined by a circle.
Next, the hair image of the outer circumference of the head of the subject A indicated by a circle was binarized. The threshold when binarizing the hair image of the outer circumference of the head of the subject A was set to 20. The image processing was performed using a commercially available personal computer with image processing software sold by Adobe Systems.

FIG. 7 is a two-tone image obtained by setting the threshold value to 20 for the hair image on the outer periphery of the head of the subject A.
Next, the ratio of the white and black portions of the two-tone image shown in FIG. 7 was calculated with reference to the grid shown in FIG. 5 used in the first embodiment. Note that the two-tone image is divided into a total of 100 square portions of 10 vertical and 10 horizontal by the grid used in the first embodiment.
For each part, if the black occupying the area in each part is 100%, it is 10 points, 90% is 9 points, 1 point is subtracted every 10%, 10% is 1 point, 0% is 0 point, horizontal Filled in Table 1 with 10 columns and 10 columns.
The vertical 10 and horizontal 10 portions of the grid and the horizontal 10 columns and vertical 10 columns of Table 1 correspond to each other while maintaining the front-rear and left-right order.
Table 1 displays a binary ratio for each portion of the divided two-tone image of the subject A. According to Table 1, the amount of the hair of the subject A can be displayed quantitatively.

  Similarly, using the hair photographed image of the subject A shown in FIG. 6, the threshold value when binarizing the hair photographed image of the outer periphery of the head of the subject A is set to 40, and the head of the subject A indicated by a circle is shown. The hair image of the outer circumference of the part was binarized.

FIG. 8 is a two-tone image obtained by setting the threshold value to 40 for the hair-captured image of the outer circumference of the head of the subject A.
Similarly to the case where the threshold value is 20, Table 2 displays the binary ratio for each portion of the divided two-tone image of the subject A when the threshold value is 40. According to Table 2, the amount of the hair of the subject A can be displayed quantitatively.

Similarly, using the hair photographed image of the subject A shown in FIG. 6, the threshold value when binarizing the hair photographed image of the outer periphery of the head of the subject A is set to 60, and the head of the subject A indicated by a circle is shown. The hair image of the outer circumference of the part was binarized.
FIG. 9 is a two-tone image obtained by setting the threshold value to 60 for the hair image on the outer periphery of the head of the subject A.
Similarly to the case where the threshold value is 20, the binary ratio for each portion of the divided two-tone image of the subject A is displayed in Table 3 when the threshold value is 60. According to Table 3, the amount of the hair of the subject A can be displayed quantitatively.

Similarly, using the hair photographed image of the subject A shown in FIG. 6, the threshold when binarizing the hair photographed image of the outer periphery of the head of the subject A is set to 80, and the head of the subject A indicated by a circle is shown. The hair image of the outer circumference of the part was binarized.
FIG. 10 is a two-tone image obtained by setting the threshold value to 80 for the hair-captured image of the outer periphery of the head of the subject A.
Similarly to the case where the threshold is 20, Table 4 displays the binary ratio for each portion of the divided two-tone image of the subject A when the threshold is 80. According to Table 4, the amount of the hair of the subject A can be displayed quantitatively.

Next, with respect to Tables 1 to 4, Table 5 shows average values for the respective values described in the 10 rows and 10 columns of Table 1.
As shown in Table 5, by changing the threshold value used when binarizing the hair image of the outer circumference of the head of the subject A and taking the average, the portion where the hair exists and the presence of the hair Table 5 clearly reflects the boundary with the part that does not.
For this reason, about the hair amount of the test subject A, it is possible to more accurately display the distribution where the head is large and where the head is small.

  Next, hair growth treatment was performed on subject A. The hair growth treatment was performed by the inventor having a doctor's qualification based on a medical viewpoint. The same applies to the following embodiments.

The hair image of the subject A shown in FIG. 6 is taken before the hair growth treatment.
On the other hand, the hair photographed image of the subject A shown in FIG. 11 was photographed after the hair growth treatment, and is a drawing substitute photograph showing the hair photographed image of the subject A.

The hair-captured image of the subject A was taken with a commercially available electronic camera by the same method as the method shown in the first embodiment.
Next, the reference points 1 to 3 shown in the previous first embodiment were set, and the outer circumference of the head of the subject A shown in the hair photographed image of FIG. 11 was determined by a circle.
Next, the hair image of the outer circumference of the head of the subject A indicated by a circle was binarized.
12 to 15 are two-tone images obtained by setting the threshold values to 20, 40, 60, and 80 for the hair image of the outer periphery of the head of the subject A, respectively.
Tables 6 to 9 show the binary ratios for each portion of the divided two-tone image of the subject A based on FIGS.

Table 10 shows the average values for the values described in Table 10 to Table 9 in the 10 rows and 10 columns.

As shown in Table 10, by changing the threshold used when binarizing the hair image of the outer circumference of the head of the subject A and taking the average, the portion where the hair is present and the presence of the hair The boundary after the hair growth treatment with the non-part is reflected more clearly in Table 10.
For this reason, about the hair amount of the test subject A, it is possible to more accurately display the distribution where the head is large and where the head is small.

Further, by comparing Tables 5 and 10 with each other, the degree of increase in the amount of hair increase before and after the hair growth treatment can be quantitatively grasped as a difference in numerical values.
Until now there was only a qualitative evaluation method for hair growth treatment, but the effect of hair growth treatment can be quantitatively grasped by the data processing method and the data comparison method of the hair image according to the present invention. Is possible.

Example 2 shows a data processing method and a data comparison method for a hair-captured image for quantitatively indicating the degree of hair growth before and after the hair growth treatment by subject B.
The hair photographed image of the subject B was photographed with a commercially available electronic camera by the same method as that shown in Example 1.
FIG. 16 is a drawing-substituting photograph showing a hair-captured image of subject B before the hair growth treatment.
Next, using the hair photographed image of the subject B shown in FIG. 16, the reference points 1 to 3 shown in the first embodiment are set, and the head of the subject B reflected in the hair photographed image of FIG. The outer periphery of the part was determined.
Next, the hair image of the outer circumference of the head of the subject B indicated by a circle was binarized.
17 to 20 are two-tone images obtained by setting the threshold values to 20, 40, 60, and 80, respectively, for the hair-captured image of the outer circumference of the head of the subject B.
Tables 11 to 14 show the binary ratios for each portion of the divided two-tone image of the subject B based on FIGS.

Table 15 shows the average values for the values described in Table 10 to Table 14 in the 10 rows and 10 columns of each table.

As shown in Table 15, by changing the threshold value used when binarizing the hair image of the outer circumference of the head of the subject B and taking the average, the portion where the hair is present and the presence of the hair The boundary before the hair growth treatment with the portion not to be reflected is more clearly reflected in Table 15.
For this reason, about the hair amount of the test subject B, the distribution of the place with many heads and the place with few heads can be displayed more correctly.

Next, hair growth treatment was performed on subject B.
The hair image of subject B shown in FIG. 16 was taken before the hair growth treatment.
On the other hand, the hair photographed image of the subject B shown in FIG. 21 was photographed after the hair growth treatment and is a drawing substitute photograph showing the photographed hair image of the subject B.
The hair photographed image of the subject B was photographed with a commercially available electronic camera by the same method as that shown in Example 1.
Next, the reference points 1 to 3 shown in the first embodiment were set, and the outer circumference of the head of the subject B shown in the hair photographed image of FIG. 21 was determined by a circle.
Next, the hair image of the outer circumference of the head of the subject B indicated by a circle was binarized.
22 to 25 are two-tone images obtained by setting the threshold values to 20, 40, 60, and 80, respectively, for the hair-captured image of the outer circumference of the head of subject B.
Tables 16 to 19 show the binary ratios for each portion of the two-tone image divided by the subject B based on FIGS.

Table 20 shows the average values of the values described in Table 10 to Table 19 in the 10 rows and 10 columns of each table.

As shown in Table 20, by changing the threshold value used when binarizing the hair image of the outer circumference of the head of the subject B and taking the average, the portion where the hair is present and the presence of the hair The boundary after the hair growth treatment with the portion not to be reflected is reflected in Table 20 more clearly.
For this reason, about the hair amount of the test subject B, the distribution of the place with many heads and the place with few heads can be displayed more correctly.

  Further, by comparing Table 15 and Table 20 with each other, it is possible to quantitatively grasp the degree of increase in the amount of hair increase before and after the hair growth treatment as a difference in numerical values.

Example 3 shows a data processing method and a data comparison method for a hair-captured image for quantitatively indicating the degree of hair growth before and after the hair growth treatment by the subject C.
The hair photographed image of the subject C was photographed with a commercially available electronic camera by the same method as that shown in Example 1.
FIG. 26 is a drawing-substituting photograph showing a hair-captured image of subject C before the hair growth treatment.
Next, using the hair photographed image of the subject C shown in FIG. 26, the reference points 1 to 3 shown in the first embodiment are set, and the head of the subject C reflected in the hair photographed image of FIG. The outer periphery of the part was determined.
Next, the hair image of the outer circumference of the head of the subject C indicated by a circle was binarized.
27 to 30 are two-tone images obtained by setting the threshold values to 20, 40, 60, and 80, respectively, for the hair-captured image of the outer periphery of the head of the subject C.
Tables 21 to 24 show the binary ratios for each portion of the two-tone image divided by the subject C based on FIGS.

Table 25 shows average values for the values described in Table 10 to Table 24 in the 10 rows and 10 columns.

As shown in Table 25, by changing the threshold value used when binarizing the hair image of the outer circumference of the head of the subject C and taking the average, the portion where the hair is present and the presence of the hair The boundary before the hair growth treatment with the portion not to be reflected is more clearly reflected in Table 25.
For this reason, about the hair amount of the test subject C, it is possible to more accurately display the distribution where the head is large and where the head is small.

Next, hair growth treatment was performed on subject C.
The hair image of the subject C shown in FIG. 26 is taken before the hair growth treatment.
On the other hand, the hair photographed image of the subject C shown in FIG. 31 was photographed after the hair growth treatment, and is a drawing substitute photograph showing the hair photographed image of the subject C.
The hair photographed image of the subject C was photographed with a commercially available electronic camera by the same method as that shown in Example 1.
Next, the reference points 1 to 3 shown in the first embodiment were set, and the outer circumference of the head of the subject C shown in the hair photographed image of FIG. 31 was determined by a circle.
Next, the hair image of the outer circumference of the head of the subject C indicated by a circle was binarized.
32 to 35 are two-tone images obtained by setting the threshold values to 20, 40, 60, and 80, respectively, for the hair-captured image of the outer circumference of the head of the subject C.
Tables 26 to 29 display the binary ratios for each portion of the divided two-tone image of the subject C based on FIGS.

Table 30 shows the average values for the values described in Table 10 to Table 29 in the 10 rows and 10 columns of each table.

As shown in Table 30, by changing the threshold used when binarizing the hair image of the outer circumference of the head of the subject C and taking the average, the portion where the hair is present and the presence of the hair The boundary after the hair growth treatment with the portion not to be reflected is reflected in Table 30 more clearly.
For this reason, about the hair amount of the test subject C, it is possible to more accurately display the distribution where the head is large and where the head is small.

  Furthermore, by comparing Table 25 and Table 30 with each other, the degree of increase in the amount of hair increase before and after the hair growth treatment can be quantitatively grasped as a difference in numerical values.

Example 4 shows a data processing method and a data comparison method for a hair-captured image for quantitatively indicating the degree of hair growth before and after the hair growth treatment by the subject D.
The hair photographed image of the subject D was photographed with a commercially available electronic camera by the same method as shown in Example 1.
FIG. 36 is a drawing-substituting photograph showing a hair-photographed image of subject D before the hair growth treatment.
Next, using the hair photographed image of the subject D shown in FIG. 36, the reference points 1 to 3 shown in the previous first embodiment are set, and the head of the subject D reflected in the hair photographed image in FIG. 36 by a circle The outer periphery of the part was determined.
Next, the hair image of the outer circumference of the head of the subject D indicated by a circle was binarized.
37 to 40 are two-tone images obtained by setting the threshold values to 20, 40, 60, and 80 for the hair image of the outer circumference of the head of the subject D, respectively.
Tables 31 to 34 display the binary ratios for each portion of the divided two-tone image of the subject D based on FIGS. 37 to 40, respectively.

Table 35 shows the average values of the values described in the 10th row and 10th column of each table in Tables 31 to 34.

As shown in Table 35, by changing the threshold used when binarizing the hair image of the outer circumference of the head of the subject D and taking the average, the portion where the hair is present and the presence of the hair The boundary before the hair growth treatment with the portion not to be reflected is reflected in Table 35 more clearly.
For this reason, about the hair amount of the test subject D, the distribution of the place with many heads and the place with few heads can be displayed more correctly.

Next, hair growth treatment was performed on subject D.
The hair image of the subject D shown in FIG. 36 was taken before the hair growth treatment.
On the other hand, the hair photographed image of the subject D shown in FIG. 41 was photographed after the hair growth treatment, and is a drawing substitute photograph showing the hair photographed image of the subject D.
The hair photographed image of the subject D was photographed with a commercially available electronic camera by the same method as shown in Example 1.
Next, the reference points 1 to 3 shown in the previous first embodiment were set, and the outer circumference of the head of the subject D shown in the hair photographed image of FIG. 41 was determined by a circle.
Next, the hair image of the outer circumference of the head of the subject D indicated by a circle was binarized.
42 to 45 are two-tone images obtained by setting the threshold values to 20, 40, 60, and 80 for the hair image of the outer circumference of the head of the subject D, respectively.
Tables 36 to 39 display the binary ratios for each portion of the divided two-tone image of the subject D based on FIGS. 42 to 45, respectively.

Table 40 shows the average values for the values described in Table 10 to Table 39 in the horizontal 10 columns and vertical 10 columns of each table.

As shown in Table 40, by changing the threshold used when binarizing the hair image of the outer circumference of the head of the subject D and taking the average, the portion where the hair is present and the presence of the hair The boundary after the hair growth treatment with the non-part is reflected more clearly in Table 40.
For this reason, about the hair amount of the test subject D, the distribution of the place with many heads and the place with few heads can be displayed more correctly.

  Further, by comparing Table 35 and Table 40 with each other, it is possible to quantitatively grasp the degree of increase in the amount of hair increase before and after the hair growth treatment as a difference in numerical values.

Example 5 shows a data processing method and a data comparison method for a hair-captured image for quantitatively indicating the degree of hair growth before and after the hair growth treatment by subject E.
The hair photographed image of the subject E was photographed with a commercially available electronic camera by the same method as that shown in Example 1.
FIG. 46 is a drawing-substituting photograph showing a hair-photographed image of subject E before the hair growth treatment.
Next, using the hair photographed image of the subject E shown in FIG. 46, the reference points 1 to 3 shown in the first embodiment are set, and the head of the subject E shown in the hair photographed image of FIG. The outer periphery of the part was determined.
Next, the hair image of the outer circumference of the head of the subject E indicated by a circle was binarized.
47 to 50 are two-tone images obtained by setting the threshold values to 20, 40, 60, and 80 for the hair image of the outer circumference of the head of the subject E, respectively.
Tables 41 to 44 display the binary ratio for each portion of the divided two-tone image of the subject E based on FIGS.

Table 45 shows the average values for the values described in Table 10 to Table 44 in the 10 rows and 10 columns of each table.

As shown in Table 45, by changing the threshold value used when binarizing the hair image of the outer periphery of the head of the subject E and taking the average, the portion where the hair exists and the presence of the hair The boundary before the hair growth treatment with the portion not to be reflected is reflected in Table 45 more clearly.
For this reason, about the hair amount of the test subject E, the distribution of a place with many heads and a place with few heads can be displayed more correctly.

Next, hair growth treatment was performed on subject E.
The hair image of the subject E shown in FIG. 46 was taken before the hair growth treatment.
On the other hand, the photographed hair image of the subject E shown in FIG. 51 is photographed after the hair growth treatment and is a drawing substitute photograph showing the photographed hair image of the subject E.
The hair photographed image of the subject E was photographed with a commercially available electronic camera by the same method as that shown in Example 1.
Next, the reference points 1 to 3 shown in the first embodiment were set, and the outer circumference of the head of the subject E shown in the hair photographed image of FIG. 51 was determined by a circle.
Next, the hair image of the outer circumference of the head of the subject E indicated by a circle was binarized.
52 to 55 are two-tone images obtained by setting the thresholds to 20, 40, 60, and 80, respectively, for the hair-captured image of the outer circumference of the head of the subject E.
Tables 46 to 49 display the binary ratios for each portion of the divided two-tone image of the subject E based on FIGS.

Table 50 shows the average values for the values listed in the 10th horizontal row and the 10th vertical column of each table in Tables 46 to 49.

As shown in Table 50, by changing the threshold used when binarizing the hair image of the outer circumference of the head of the subject E and taking the average, the portion where the hair is present and the presence of the hair The boundary after the hair growth treatment with the portion not to be reflected is reflected in Table 50 more clearly.
For this reason, about the hair amount of the test subject E, the distribution of a place with many heads and a place with few heads can be displayed more correctly.

  Furthermore, by comparing Table 45 and Table 50 with each other, it is possible to quantitatively grasp the degree of increase in the amount of hair increase before and after the hair growth treatment as a difference in numerical values.

Example 6 shows a data processing method and a data comparison method for a hair-captured image for quantitatively indicating the degree of hair growth before and after the hair growth treatment by the subject F.
The hair photographed image of the subject F was photographed with a commercially available electronic camera by the same method as that shown in Example 1.
FIG. 56 is a drawing-substituting photograph showing a hair-captured image of subject F before the hair growth treatment.
Next, using the hair photographed image of the subject F shown in FIG. 56, the reference points 1 to 3 shown in the first embodiment are set, and the head of the subject F reflected in the hair photographed image of FIG. The outer periphery of the part was determined.
Next, the hair image of the outer circumference of the head of the subject F indicated by a circle was binarized.
57 to 60 are two-tone images obtained by setting the threshold values to 20, 40, 60, and 80 for the hair image of the outer circumference of the head of the subject F, respectively.
Tables 51 to 54 display the binary ratios for each portion of the divided two-tone image of the subject E based on FIGS.

Table 55 shows the average values for the values listed in the 10th horizontal and 10th vertical columns of Tables 51 to 54.

As shown in Table 55, by changing the threshold value used when binarizing the hair image of the outer periphery of the head of the subject F and taking the average, the portion where the hair exists and the presence of the hair The boundary before the hair growth treatment with the portion not to be reflected is reflected in Table 55 more clearly.
For this reason, about the hair amount of the test subject F, the distribution of the place with many heads and the place with few heads can be displayed more correctly.

Next, hair growth treatment was performed on subject F.
The hair photographed image of the subject F shown in FIG. 56 is taken before the hair growth treatment.
In contrast, the photographed hair image of the subject F shown in FIG. 61 was photographed after the hair growth treatment, and is a drawing substitute photograph showing the photographed hair image of the subject F.
The hair photographed image of the subject F was photographed with a commercially available electronic camera by the same method as that shown in Example 1.
Next, the reference points 1 to 3 shown in the first embodiment were set, and the outer circumference of the head of the subject F shown in the hair photographed image of FIG. 51 was determined by a circle.
Next, the hair image of the outer circumference of the head of the subject F indicated by a circle was binarized.
62 to 65 are two-tone images obtained by setting the threshold values to 20, 40, 60, and 80 for the hair image of the outer circumference of the head of the subject F, respectively.
Tables 56 to 59 display the binary ratio for each portion of the two-tone image divided by the subject F based on FIGS.

Table 60 shows the average values for the values listed in the 10th row and 10th column of each table in Tables 56 to 59.

As shown in Table 60, by changing the threshold value used when binarizing the hair image of the outer periphery of the head of the subject E and taking the average, the portion where the hair exists and the presence of the hair The boundary after the hair growth treatment with the portion not to be reflected is reflected in Table 60 more clearly.
For this reason, about the hair amount of the test subject E, the distribution of a place with many heads and a place with few heads can be displayed more correctly.

  Furthermore, by comparing Table 55 and Table 60 with each other, the degree of increase in the amount of hair increase before and after the hair growth treatment can be quantitatively grasped as a difference in numerical values.

According to the data processing method and the data comparison method of the hair-captured image of the present invention, it is possible to quantitatively handle the hair amount that has been qualitative in the past.
Therefore, in the hair growth treatment, the data processing method and the data comparison method of the hair photographed image according to the present invention are widely used in the hair medical industry, the hair esthetic industry, the barber industry, etc. as an index that objectively shows the effect of the treatment. be able to.

1-3 Reference point 4 Input document 5 1D image sensor 6 Wide lens 7 Illumination lamp 8 Scalp

Claims (5)

A method for processing a hair photographic image obtained by photographing the head including the top of the head from above the subject,
Determining an outer periphery of the head imaged in the hair-captured image;
Binarizing the hair image taken inside the outer periphery to obtain a two-tone image;
Dividing the two-tone image into a plurality of portions;
Displaying a binary ratio of the two-tone image for each of the plurality of divided portions;
Using a data processing method for a hair-captured image ,
A binary image of a two-tone image displayed for each of a plurality of parts obtained by the data processing method of the hair-captured image, using a hair-captured image obtained by capturing the direction of the top of the head from the head of the subject before the hair thickening treatment The ratio (A) of
Using a hair photographed image obtained by photographing the head direction from the head of the subject after hair thickening treatment, the binary image of the two-tone image displayed for each of the plurality of parts obtained by the data processing method of the hair photographed image Ratio (B)
Having a step of comparing
The binary ratio (A) of the two-tone image displayed for each of the plurality of parts and the binary ratio (B) of the two-tone image displayed for each of the plurality of parts. A method for comparing data of hair photographed images, including a step of displaying a difference . The method for comparing data of a hair photographic image according to claim 1, wherein the outer periphery of the head determined by the step of determining the outer periphery of the head reflected in the hair photographic image is a circumference or an ellipse circumference. The step of binarizing the hair-captured image inside the outer periphery of the head to obtain a two-tone image includes the step of obtaining two or more two-tone images by performing binarization on the basis of two or more threshold values,
The step of displaying the binary ratio of the two-tone image for each of the plurality of divided portions includes the step of displaying the average of the binary ratio of two or more two-tone images for each portion. The method for comparing data of hair-captured images according to claim 1 or 2. The step of displaying the binary ratio of the two-tone image for each of the plurality of divided portions includes the step of displaying the binary ratio of the two-tone image as a two-dimensional image. The data comparison method of the hair photograph image in any one. The outer periphery of the head used when obtaining the binary ratio (A) of the two-tone image displayed for each of the plurality of parts;
The relationship with the outer periphery of the head used when obtaining the binary ratio (B) of the two-tone image displayed for each of the plurality of parts is as follows:
A reference point 1 of the hair-captured image inside the outer circumference corresponding to the intersection of a straight line passing through the right mouth corner edge and the right eye corner edge of the front face image of the subject's face and a straight line serving as a boundary between the facial muscles and the scalp;
A reference point 2 of the hair-captured image on the inner side of the outer circumference corresponding to an intersection of a straight line passing through the left mouth corner edge and the left eye corner edge of the front image of the subject's face and a straight line serving as a boundary between the expression muscle and the scalp;
A reference point 3 indicating the center of the subject's toothpick in the hair image taken inside the outer circumference;
The method for comparing data of hair-captured images according to any one of claims 1 to 4, which are substantially the same with respect to each other.