CN109452959B

CN109452959B - Traceless layered extraction method and device

Info

Publication number: CN109452959B
Application number: CN201811425296.6A
Authority: CN
Inventors: 王鹏君
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-11-27
Filing date: 2018-11-27
Publication date: 2021-02-02
Anticipated expiration: 2038-11-27
Also published as: CN109452959A

Abstract

The invention provides a traceless layered extraction method, which comprises the following steps: detecting hair follicles at different parts of a human body, acquiring hair follicle densities corresponding to the different parts, and determining areas to be extracted of the hair follicles according to the hair follicle densities corresponding to the different parts: dissecting and analyzing hair follicle tissues in the region to be extracted, analyzing microelements of hairs in the hair follicle tissues, and judging the health state of the hairs; determining a supply area from which the hair follicle can be extracted according to the health status of the hair; the hair follicles in the supply area are extracted in a forward and reverse alternate rotation mode through the extractor, the extraction depth and direction of the hair follicles are flexibly adjusted, and the complete hair follicles are obtained.

Description

Traceless layered extraction method and device

Technical Field

The invention relates to the technical field of medical traceless extraction, in particular to a traceless layered extraction method and device.

Background

With the rapid development of the beauty medical field and the increasing improvement of the quality of life, the pursuit of people for the external image is more and more demanding, wherein the hair occupies a very important proportion in the external image, so the hair planting is undoubtedly a great welfare for the people who have alopecia or have a posterior movement of the hairline, the hair planting relates to two major technologies of hair follicle extraction and hair follicle transplantation, wherein, taking the hair follicle extraction as an example, the existing hair follicle layered extraction technology refers to the extraction with different proportions and regions according to the density of different hair follicles of different parts of the human body, but in the extraction process, besides the subjective factors of the proficiency degree of an extractor on the use of the extractor, objective factors are included, such as the excessive friction degree between a drill bit of the extractor and the scalp of the extractor, so that the scalp of the extractor has serious friction scars, or the extractor cannot perform deep extraction and deep extraction in the hair follicle extraction process according to the will of the extractor, Flexible adjustment of the direction, which all results in incomplete hair follicle extraction.

Disclosure of Invention

The invention provides a traceless layered extraction method and a traceless layered extraction device, which are used for flexibly adjusting the extraction depth and direction of hair follicles, acquiring complete hair follicles and improving the survival rate of the hair follicles.

The traceless layered extraction method provided by the embodiment of the invention comprises the following steps:

detecting hair follicles at different parts of a human body, and acquiring hair follicle densities corresponding to the different parts, wherein the hair follicle densities are divided into: a first follicle density, a second follicle density, a third follicle density;

determining the area to be extracted of the hair follicle according to the hair follicle densities corresponding to the different parts:

dissecting and analyzing the hair follicle tissues of the region to be extracted, analyzing the trace elements of the hairs in the hair follicle tissues, and judging the health state of the hairs;

determining supply areas of extractable hair follicles according to the health states of the hairs, wherein the supply areas comprise a first supply area and a second supply area;

extracting hair follicles in the supply area by an extractor in a forward and reverse alternate rotation mode, wherein for the extraction of each hair follicle, the extraction depth of the extractor is controlled according to the depth of the hair follicle and the size of a hair papilla, and the extraction direction of the extractor is adjusted according to the hair growth direction;

and the first supply area and the second supply area adopt a transitional extraction mode to fuzzify the engagement degree of the first supply area and the second supply area and the engagement degree of the supply area and the hair of the peripheral area.

Further, the step of determining the donor area for the extractable hair follicle is as follows:

step A1: determining the supply area from which hair follicle tissue can be extracted according to the density of the hair follicles in the area to be extracted;

step A2: dividing the supply area into a plurality of areas in a dividing mode as follows: determining how many areas the supply area needs to be divided into, dividing an area meeting a first hair follicle density into the first supply area to be extracted, and dividing an area meeting a second hair follicle density into the second supply area to be extracted, wherein the first hair follicle density is greater than or equal to a second hair follicle density which is greater than or equal to a third hair follicle density, and the area corresponding to the third hair follicle density is the peripheral area;

and step A3, after one round of extraction of the hair follicle tissues to be extracted in the first supply area and the second supply area is completed, re-determining the supply area from which the hair follicle tissues can be extracted, and sequentially executing the steps A1-A2 until the number of the hair follicle tissues in the supply area to be extracted is consistent with the number of the hair follicle tissues to be planted.

Further, the step of extracting hair follicles is as follows:

step B1, determining the specific positions of the hair follicles to be extracted in the first supply area and the second supply area;

step B2: extracting the hair follicles at the specific positions by adopting a forward and reverse alternate rotation mode through an extractor;

step B3: according to the growth direction of the hair and the size of the unit of the hair follicle to be extracted, the inner diameter of a drill bit, the needle insertion length and the rotation angle of the extractor are adjusted at any time, namely the extraction depth of the extractor is controlled according to the depth of the hair follicle and the size of a hair papilla, and the extraction direction of the extractor is adjusted according to the growth direction of the hair;

step B4: and separating the hair follicle from a hair germ to obtain the hair follicle.

Further, the extractor carries out hair follicle extraction through hair follicle extraction drill bit, when extracting the hair follicle, will hair follicle extraction drill bit forward reverse rotation in turn, hair follicle extraction drill bit is hollow structure and its internal diameter is 0.5-0.9mm, the internal diameter can be adjusted at any time.

Further, the transitional extraction mode is to select a corresponding caliber according to the size of the hair follicle through a multifunctional extraction platform, and extract healthy hair follicle tissues from the supply area in a point-to-point and hidden jumping mode in a scattered mode.

Further, before determining the supply area of the extractable hair follicle according to the health status of the hair, acquiring a first supply area according to analysis of trace elements of the hair in the hair follicle tissue, wherein the hair follicle consists of two parts, namely connective tissue and epithelium, analyzing the hair follicle in the first supply area, and determining a second supply area of the extractable hair follicle, wherein the steps are as follows:

step C1: observing hair follicles in the first supply area through a microscopic instrument, and shooting a target image of the hair follicles by medical photography, wherein the target image comprises connective tissues and epithelia;

step C2: determining the number i of cylindrical images according to the target image, and acquiring a data set C ═ C11, C12,. and C1n1 of the cylindrical images; ...; ci1, Ci 2.., Cin1}, wherein n1 is a positive integer and represents the number of data corresponding to one cylindrical image; i represents the number of cylinders in the target image;

step C3: calculating i x n1 data parameters and a similarity matrix E in the data set C to obtain corresponding i x n1 data feature points, and diffusing n1 feature points obtained by each cylindrical image when comparing and analyzing the data feature points with a similar feature library to obtain a similarity attribute;

step C4: and determining corresponding position information of each cylindrical image in the target image, and reconstructing a second supply area according to the similarity attribute.

Wherein for reconstructing the second donor zone, the following steps are further included:

step C41: determining the position of a cylindrical structure according to the corresponding position information of each cylindrical image in the target image;

step C42: automatically intercepting a three-dimensional frame containing the cylindrical structure according to the position of the cylindrical structure, acquiring n layers of differentiation layers corresponding to the cylindrical structure in the three-dimensional frame, wherein n is a positive integer, and acquiring enhanced images corresponding to the n layers of differentiation layers;

step C43: calculating the thickness of a hierarchical layer corresponding to the cylindrical structure in the enhanced image of the mth layer based on a preset threshold, wherein m is greater than 0 and m is less than or equal to n, and m represents any one or more hierarchical layers in the n hierarchical layers;

step C44: judging whether the thickness of the mth layering is within a preset threshold range, if so, performing region communication on all the cylindrical images within the preset threshold range to form the second supply zone;

the preset threshold range is that each layer of the n differentiation layers is respectively provided with a corresponding upper limit value and a corresponding lower limit value, and the cylindrical structure is a three-dimensional structure.

Further, the automatic intercepting contains the three-dimensional frame of cylindric structure, its step is as follows:

step E1: performing line segment cutting on the cylindrical structure, and obtaining an edge binary image corresponding to the cylindrical structure through an edge detection algorithm;

step E2: performing L point segmentation on the edge binary image to obtain L +1 line segments, setting a threshold value a of the shortest line segment in the L +1 line segments, removing the ultra-short line segment with the length less than a, splitting the joint of the L points, and splitting one edge into two edges when the edge is close to the other edge to avoid error connection;

step E3: acquiring adjacent end points b of two line segments Fi and Fj in an edge binary image_i、b_jThe distance f between the two segments and the length Fi, Fj of the two segments are determined, the adjacency probability p of the two segments is determined, and the adjacent end point b of the two segments which are actually connected is determined_i、b_jGray value g of_i、g_jThe gray level consistency is characterized by a similarity probability x, wherein:

step E4: if the obtained f is larger than a, continuing to process the next line segment until all the line segments are processed; if the obtained f is less than or equal to a, removing the line segment and processing the next line segment;

step E5: judging the position relationship of the two line segments Fi and Fj, and if the two line segments Fi and Fj are intersected, turning to the step E6; if so, go to step E7;

step E6: if the two line segments Fi and Fj are intersected, the fact that Fi and Fj are located on the same straight line is judged, the pixel gray levels of points, outside the straight line, of Fi and Fj are set to be 0, and the step E4 is returned to;

step E7: if the two line segments Fi and Fj are separated, the connecting line between the adjacent end points of the two line segments forms a line segment Fij, and the gray values g of the Fi, Fij, Fj and Fij line segments in the gray map are respectively calculated_i、g_jAnd calculating the difference between the corresponding average gray values, and going to step E8;

step E8: setting a gray threshold g, judging whether the difference of the average gray values exceeds the gray threshold g, if both are smaller than g, connecting Fi and Fj into a line segment through adjacent end points, and returning to the step E4; otherwise, Fi and Fj are not on the same straight line, and the step E4 is returned to;

step E9: determining an edge extraction line of the cylindrical structure according to the steps E1-E8, establishing a space coordinate system, determining the maximum coordinate and the minimum coordinate of X, Y, Z directions of the edge extraction line, and constructing the three-dimensional frame.

The embodiment of the invention also provides a device for traceless layered extraction, which comprises:

the detection module is used for detecting hair follicles at different parts of a human body and acquiring hair follicle densities corresponding to the different parts, wherein the hair follicle densities are divided into: a first follicle density, a second follicle density, a third follicle density;

the analysis module is used for analyzing and dissecting hair follicle tissues of a region to be extracted, which is determined according to the hair follicle density detected by the detection module, analyzing trace elements of hairs in the hair follicle tissues and judging the health state of the hairs;

the determining module is used for determining a supply area capable of extracting hair follicles according to the health state of the hairs judged by the analyzing module, and the supply area comprises a first supply area and a second supply area;

the extraction module is used for extracting hair follicle tissues of the human body;

the control module is used for controlling the extraction module to extract the hair follicles in the supply area in a forward and reverse alternate rotation mode according to the depth of the hair follicles, the size of hair papillae and the hair growth direction, wherein for the extraction of each hair follicle, the extraction depth of the extraction module is determined according to the depth of the hair follicle and the size of the hair papillae, and the extraction direction of the extraction module is determined according to the hair growth direction;

Further, a moving device 01 and an extraction device 02 are arranged in the extraction module;

the moving device 01 comprises two moving chains 011, four connecting columns 012 are arranged between the two moving chains 011 and are symmetrically distributed, the lower part of each moving chain 011 is provided with a symmetrical telescopic chain 013, each moving chain 011 comprises a convex body 111, corresponding walking bodies 112 are uniformly installed on the convex body 111, each walking body 112 comprises a base 1121 welded on the corresponding side wall of the convex body 111, a first power device 1122 and a second power device 1123 are installed on two sides of the upper surface of the base 1121 respectively, the first power device 1122 and the second power device 1123 are installed on corresponding first flange discs 1124 and corresponding second flange discs 1125 through threads respectively, moving bodies 1126 are arranged at the upper ends of the first flange discs 1124 and the second flange discs 1125 respectively, two fixing columns a are symmetrically arranged in the middle of the upper surface of the base 1121, and a limit block 7 is sleeved on the fixing columns 112a, the upper end of the limit block 1127 is connected with the lower surface of the moving body 1126, the limit block 1127 is located on one side of the first power device 1122 or the second power device 1123, the upper surface of the base 1121 is welded with a corresponding longitudinal retainer 1128, the lower surface of the moving body 1126 is welded with a corresponding transverse retainer 1129, the transverse retainer 1129 is sleeved on the longitudinal retainer 1128, wherein the edge of the upper surface of the base 1121 is fixedly connected with a plurality of groups of fixing bodies 1130, the number of the groups of fixing bodies 1130 is 2-5, the distance between each adjacent group of fixing bodies 1130 is equal, the side surface of the convex body 111 is fixedly connected with a driving motor 1133 and a starting switch 1134, the driving motor 1133 is a servo motor or a stepping motor, the upper surface of the plurality of groups of fixing bodies 1130 is fixedly connected with an inner cavity 1131, and the side surface of the inner cavity 1131 is hinged with a handle 1132, an accommodating grid is arranged in the inner cavity 1131, an extraction device 02 is placed in the accommodating grid, and a distance sensor is arranged on the outer surface of the accommodating grid;

the extraction device 02 includes: drill bit 021, first pipeline 022, second pipeline 023, annular grab bar 024, grab handle 025, drill bit 021 size and locating hole looks adaptation, the locating hole evenly distributed on a plurality of polygon locating pieces, the polygon locating piece is located the position of drawing of human body, a port of first pipeline 022 is provided with grab handle 025, the inside hollow structure that is of grab handle 025, first pipeline 022 inlay in the hollow structure, the surface of first pipeline 022 is equipped with first intaglio 026, grab handle 025 internal surface is provided with second intaglio 027, through first intaglio 026 with second intaglio 027 will first pipeline 022 with grab handle 025 is fixed mutually, drill bit 021 with the other end looks embedded connection of first pipeline 022, the top of 025 is provided with the rotator 026, the outside of rotator 026 is provided with rotatory caulking groove, 025 outer surface is provided with protruding 027, a limit protrusion 028 matched with the protrusion 027 is arranged near the protrusion 027, the limit protrusion 028 is positioned on the outer surface of the grab handle 025, an annular grab rod 024 is arranged on the outer surface of the second pipeline 023, and one end of the annular holding rod 024 is provided with a connecting rod 241, one end of the connecting rod 241 is rotatably connected with the tail end of the first section of the annular holding rod 024, the connecting rod 241 is provided with a groove 242, the groove 242 is internally provided with a rotating bar 243, a passage 231 is provided inside the second pipe 023, an extraction port is provided at a portion where the passage 231 is connected with the second pipe 023, a cutter 232 is arranged at one side of the extraction port, an operation body is arranged at one end of the second pipeline 023, a gear 233 is provided on an outer surface of the operating body, the gear 233 coincides with an axis of the second pipe 023, and an outer diameter of the first pipe 022 is smaller than an inner diameter of the second pipe 023.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a flow chart of a traceless hierarchical extraction method according to an embodiment of the present invention;

FIG. 2 is a block diagram of an apparatus for traceless layer extraction according to an embodiment of the present invention;

FIG. 3 is a flow chart of a reconstruction of a second donor band in an embodiment of the present invention;

FIG. 4 is a block diagram of a mobile device according to an embodiment of the present invention;

FIG. 5 is a diagram illustrating an exemplary embodiment of an extracting apparatus.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

The traceless layered extraction method provided by the embodiment of the invention, as shown in fig. 1, comprises the following steps:

s1, detecting hair follicles at different parts of a human body, and acquiring hair follicle densities corresponding to the different parts, wherein the hair follicle densities are divided into: a first follicle density, a second follicle density, a third follicle density;

wherein the first follicle density is greater than or equal to the second follicle density, the second follicle density is greater than or equal to the third follicle density, and the follicle density is determined according to the density of the whole hair.

And S2, determining the areas to be extracted of the hair follicles according to the density of the hair follicles corresponding to different parts:

wherein the different locations include, but are not limited to, the temple, the occipital posterior, the roof, etc.; the region to be extracted refers to the region from which the extractor needs to extract hair, and is generally located in the back pillow.

S21, dissecting and analyzing the hair follicle tissues in the region to be extracted, analyzing the microelements of the hairs in the hair follicle tissues, and judging the health status of the hairs;

s22, determining supply areas capable of extracting hair follicles according to the health states of the hairs, wherein the supply areas comprise a first supply area and a second supply area;

the first supply area and the second supply area can be divided according to the difference between the area corresponding to the first hair follicle density and the hair health condition corresponding to the area.

The advantages are that: by judging the density of the hair follicles and the health of the hairs, the extractable area is determined, the accuracy of the area determination is improved, and the activity of the extracted hair follicles is ensured.

S3, extracting the hair follicles in the supply area by an extractor in a forward and reverse alternate rotation mode, wherein for the extraction of each hair follicle, the extraction depth of the extractor is controlled according to the depth of the hair follicle and the size of a hair papilla, and the extraction direction of the extractor is adjusted according to the hair growth direction;

wherein, the first supplies district and the second supplies the district and all takes the mode of transition extraction to blurring first supplies district and second and supplies the district and the linking degree of peripheral zone hair, its benefit is: avoid appearing too obvious boundary line, improve whole aesthetic feeling effectively.

Wherein, the linking degree refers to the boundary between two adjacent regions.

In the present example, for the step S1, the density of the hair follicle can be obtained by detecting the density monitor, and the obtained hair follicle density can be represented as discrete N × M dot matrix data, which is referred to as N × M density matrix D in the present example_N×MThe performance in the detection system is a hair follicle density matrix formed by discrete quantization of physical optical signals of the density detector, and each hair follicle density matrix element is hair follicle densityThe higher the density of hair follicles in the head region of the degree data, the higher the value of the corresponding density matrix data. The length of the dimension of the head hair follicle density matrix can be freely adjusted, and in the actual implementation process, the used algorithm is irrelevant to the size of the hair follicle density matrix, so that the expandability of the system in the future is ensured, and the system is facilitated to be upgraded. For example, the density monitor is used to divide the head into i regions, and in the process, the density partition region and the boundary of the hair follicle density partition region need to be determined, and the embodiment adopts two steps to determine the hair follicle generation extraction region:

(i) determination of the boundary of the contour of the hair follicle of the head.

(ii) Clustering of head hair follicle density data and determination of an area to be extracted.

The solution of step (i) is first given in detail. In step (i), since the human head has a circular shape, and most of the human heads have an irregular shape when viewed from above, it is an important issue to determine the boundary of the hair follicle contour of the head. The specific implementation of the head hair follicle contour boundary detection method is described below. Firstly, filtering a head hair follicle density matrix D to remove noise data; assume a head hair follicle density matrix D, which is an N row by M column matrix. The head hair follicle contour boundary determination algorithm is described in the following steps:

(1) given an nxm head hair follicle density matrix D, the coordinates of the rows and columns of the data of the density matrix are expressed by x (abscissa value) and y (ordinate value), respectively, and the initial values of the cycle number variable k and the parameter h are set to k-1, t-1, and h-0.1, respectively (the values of these parameters can be adjusted according to the actual situation).

(2) Separately calculating the gradient function G in the x and y directions_x(x,y)And G_y(x,y)The value of (c). The gradient value in the x direction at coordinates (x, y) is calculated as follows:

the gradient value in the y direction at coordinates (x, y) is calculated as follows:

where D is the head follicle density matrix, and x and y represent the row and column coordinates of the matrix, respectively.

(3) According to the formula

A composite gradient value d is calculated.

(4) The weight w is calculated according to the following formula:

wherein σ represents a sequence

The standard deviation of (a) is determined,

t is used to record the half of the maximum value of N and M.

(5) Define a filter function f (x, y):

wherein

Represents the weight w (x, y) of a point (x, y) plus the mean of the weights of its surrounding 4 points, the weight w (x + i, y + j) of a point being obtained by step (4) of the algorithm, and

the coordinates (x, y) themselves and the w values of the 4 surrounding elements are actually used in calculating f (x, y). In actual operation, for each coordinate (x, y), the initial value of f (x, y) is the value D (x, y) of the follicle density matrix D at coordinate (x, y); with calculationThe value of f (x, y) may change over successive iterations of the method.

(6) The operations of steps (2) - (5) are performed for each value in the head follicle density matrix D, and each time k equals k +1, the loop ends when k equals N × M.

(7) After obtaining f (x, y) values for each element in the head hair follicle density matrix D, setting a threshold value delta, and taking the result of x and y values when f (x, y) > delta as coordinate values of boundary elements. This results in a final set of head boundary elements

Assuming that P boundary elements are finally obtained, the boundary is formed by connecting adjacent boundary elements.

The determination of the boundary of the hair follicle contour by the hair follicle contour boundary determining algorithm results in an overall area, which is an irregular area. The next job to be done is to perform density-based data clustering on this irregular area to determine i follicle density partition areas. The head hair follicle density data clustering method, namely step (ii), will be described in detail below. In step (ii), the head hair follicle density clustering method is a density clustering-based method. After determining the boundary of the contour of the hair follicle in the head according to step (i), the data points lying within the boundary are clusterable data points, and the data points lying outside the boundary are discarded directly. When head hair follicle density point clustering is carried out, density values of points in the boundary of the head hair follicle contour must be filtered, namely, data of D (x, y) > theta are simply reserved, and if the condition of D (x, y) > theta is not met, D (x, y) >0 is set. θ in the condition is a parameter that can be specified in advance. The matrix of the head follicle density matrix in coordinates (x, y) is two-dimensional, so a two-dimensional Gaussian density kernel function K (x, y) is given first

Where x, y are the row and column coordinates, respectively, of the head follicle density matrix D, the actual coordinates (x, y) being within the head follicle contour boundary. For each head follicle density data D (x, y) within the head follicle contour boundary, its estimated probability value is calculated:

n in the formula represents the number of points of data around D (x, y), and different values can be selected in the actual processing process; h is a smoothing parameter, h >0, for example N-5, h-1.2. Defining gradient functions of p (x, y) over x and over y, respectively

Above gradient function G_p(x,y)(x) And G_p(x,y)The definition of h of (y) is the same as the definition of p (x, y) described above, and is a smoothing parameter. Updating the values of x and y using the gradient function of p (x, y) above

Where l is the step of the iteration and δ is a parameter that can specify a certain value, e.g., specify δ to 0.01. The iterative process continues until | x^l+1-x^lThe values | < epsilon, 0.00001, epsilon can also be chosen to be different values, which represent the tolerance of the iteration. Eventually, the iteration converges to some final value of x 'and y'.

The iterative calculation is carried out on the hair follicle at the head partEach element of the density matrix D, which is obtained by converging the obtained coordinates (x ', y'), can obtain its corresponding density probability value p (x ', y'), discarding some data points satisfying p (x ', y') < epsilon, which is a value specified according to the existing data. Since the system needs i hair follicle partition regions, assuming that i is 6, the 6 hair follicle partition regions are R respectively₁，R₂，R₃，R₄，R₅And R is₆. The estimated probability sequences { p (x ', y') } are sorted from large to small to obtain the maximum 6 coordinate points (x, y)₁,y₁)，(x₂,y₂)，(x₃,y₃)，(x₄,y₄)，(x₅,y₅) And (x)₆,y₆). Then, the distance to these 6 points is calculated for other coordinates whose density values at their coordinates within the matrix D coordinate expression range satisfy the condition D (x, y) > θ, which is a parameter that can be specified in advance. Specifically, the Euclidean distance formula is used to calculate the Euclidean distance d from the above 6 points of the maximum density_i：

Divide data point D (x, y) into head follicular zone areas R_iBy seeing that point at a minimum distance:

all density data points for the 6 head follicle partitions were obtained by the above method.

Calculating the average density value of all density data points in a certain head hair follicle region, such as the head hair follicle partition region R_iHas an average density of A_i，

Wherein D (x, y) is E.R_i，|R_iI denotes the hair follicle partition region R at the head_iIs the number of data points D (x, y), D being the hair follicle of the headDensity matrix, finally according to hair follicle partition region R_iAverage density of A_iAnd obtaining the region to be extracted.

The technical scheme has the beneficial effects that: the hair follicle acquisition integrity is ensured by flexibly adjusting the extraction depth and direction when the hair follicle is extracted, and the survival rate of the hair follicle is improved.

The method provided by the embodiment of the invention comprises the following steps of determining the supply area capable of extracting the hair follicle:

step A1: determining a supply area capable of extracting hair follicle tissues according to the density of the hair follicles in the area to be extracted;

step A2: the supply area is divided into a plurality of areas in the following way: determining the number of areas into which a supply area needs to be divided, dividing the area meeting the first hair follicle density into a first supply area to be extracted, and dividing the area meeting the second hair follicle density into a second supply area to be extracted, wherein the first hair follicle density is greater than or equal to the second hair follicle density, the second hair follicle density is greater than or equal to the third hair follicle density, and the area corresponding to the third hair follicle density is a peripheral area;

and step A3, after one round of extraction of the hair follicle tissues to be extracted in the first supply area and the second supply area is completed, re-determining the supply area capable of extracting the hair follicle tissues, and sequentially executing the steps A1-A2 until the hair follicle tissues in the extracted supply area are consistent with the quantity of the hair follicle tissues to be planted.

Wherein, the number of the hair follicle tissues and the hair follicle tissues to be planted is determined by professional detection.

The technical scheme has the beneficial effects that: the supply area capable of extracting the hair follicle tissues is determined again, so that the accuracy of the quantity of the extracted hair follicles can be ensured, and the obvious extraction trace in the extraction process can be effectively avoided, thereby avoiding the occurrence of the skylight phenomenon.

The method provided by the embodiment of the invention comprises the following steps of:

b1, determining the specific positions of the hair follicles to be extracted in the first supply area and the second supply area;

step B2: extracting hair follicles at specific positions by adopting a forward and reverse alternate rotation mode through an extractor; the advantages are that: the friction force between the drill bit and the scalp in the extraction process is reduced, so that the damage rate of the extracted hair follicle is reduced, and the survival rate of the hair follicle is improved.

Step B3: according to the growth direction of the hair and the size of a unit of the hair follicle to be extracted, the inner diameter of a drill bit, the needle insertion length and the rotation angle of the extractor are adjusted at any time, namely the extraction depth of the extractor is controlled according to the depth of the hair follicle and the size of a hair papilla, and the extraction direction of the extractor is adjusted according to the growth direction of the hair;

wherein, the drill bit internal diameter is generally 0.6mm, 0.8mm, 1.0mm, and its benefit is: the inner diameter is the diameter most suitable for Asian hair, and can minimize damage to hair follicles.

Step B4: separating the hair follicle from the hair germ to obtain the hair follicle.

Further, the extractor carries out hair follicle extraction through hair follicle extraction drill bit, when extracting the hair follicle, extracts the forward reverse rotation in turn of drill bit with the hair follicle, and the hair follicle extracts the drill bit and is hollow structure and its internal diameter and be 0.5-0.9mm, and the internal diameter can be adjusted at any time, and its benefit is: the extraction inner diameter of the drill bit can be flexibly adjusted.

The technical scheme has the beneficial effects that the completeness of hair follicle acquisition and the survival rate of the hair follicle are further ensured by further explaining the extraction depth and direction of the extractor when the hair follicle is extracted by flexibly adjusting the extraction depth and direction of the extractor in the extraction process.

In the method provided by the embodiment of the invention, the transitional extraction mode is adopted, the corresponding caliber is selected according to the size of the hair follicle through the multifunctional extraction platform, and the healthy hair follicle tissues are dispersedly extracted from the supply area in a point-to-point and hidden jumping mode.

The technical scheme has the beneficial effects that: by adopting a proper caliber, the incomplete hair follicle extraction caused by larger or smaller caliber in the extraction process can be avoided as much as possible, and the survival rate of the hair follicle is reduced; the point-to-point and hidden jump scattered extraction is adopted, so that an excessively obvious boundary is avoided, and the integral aesthetic feeling is effectively improved.

Before determining a supply area capable of extracting hair follicles according to the health state of the hairs, the method provided by the embodiment of the invention analyzes the hair follicles in the first supply area according to the analysis of the trace elements of the hairs in the hair follicle tissue to obtain a first supply area, wherein the hair follicles consist of a connective tissue part and an epithelium part, analyzes the hair follicles in the first supply area to determine a second supply area capable of extracting the hair follicles, and comprises the following steps:

step C1: observing the hair follicle in the first supply area through a microscopic instrument, and shooting a target image of the hair follicle by medical photography, wherein the target image comprises connective tissues and epithelia;

step C2: determining the number i of cylindrical images according to the target image, and acquiring a data set C of the cylindrical images, namely { C11, C12., C1n 1; ...; ci1, Ci 2.., Cin1}, wherein n1 is a positive integer and represents the number of data corresponding to one cylindrical image; i represents the number of cylinders in the target image;

wherein, the similarity matrix E is calculated by the following formula:

d λ, where λ represents a set of feature points corresponding to one cylindrical image, that is:

λ＝[λ₁ λ₂ ... λ_n]

the characteristic points are diffused, and a data set C of i × n1 data characteristic points is obtained, wherein the data set C is { C11, C12.. C1n 1; ...; ci1, Ci 2.., Cin1}, and the average value v thereof is found, from the data set C ═ C11, C12.., C1n 1; ...; ci1, Ci 2.., Cin1} extracts points with the closest 3% value to v, the points are auxiliary feature points, the auxiliary feature points are added into a feature point set in a similar feature library for assistance, and the value of a similar matrix E corresponding to the points is modified to be 1.

Step C4: and determining corresponding position information of each cylindrical image in the target image, and reconstructing the second supply area according to the similarity attribute.

It should be noted that the first supply zone is obtained by analyzing the target image and acquiring data corresponding to each cylinder on the basis of the target image, and the second supply zone is obtained by analyzing the density and health condition of hair follicles on the basis of the first supply zone, that is, the second supply zone is a combined area of the first supply zone and the second supply zone to be extracted.

Wherein, for reconstructing the second supply zone, as shown in fig. 3, the following steps are further included:

step C41: determining the position of the cylindrical structure according to the corresponding position information of each cylindrical image in the target image;

step C42: automatically intercepting a three-dimensional frame containing a cylindrical structure according to the position of the cylindrical structure, acquiring n layers of differentiation layers corresponding to the cylindrical structure in the three-dimensional frame, wherein n is a positive integer, and acquiring enhanced images corresponding to the n layers of differentiation layers;

it should be noted that: the above step C4 is further explained for reconstructing the second donor band, wherein the enhancement image can enhance the cylindrical structure image in the frame by Hessian enhancement algorithm or fitting circle filter algorithm, specifically enhance the pixel points of the specified medical photographic value range, and enhance the diameter range with a certain size, for example, the medical photographic value can be a CT value, which has the advantages that: and enhancing the image and acquiring accurate data.

The cylindrical structure in the target image may be, for example, explained by taking hair follicle cells as an example, and whether the hair follicle meets the requirement for extraction is determined by judging the thickness of any one or more of the fat layer, the dermis layer, and the epidermis layer.

step C44: judging whether the thickness of the mth layering layer is within a preset threshold range, if so, performing region communication on all cylindrical images within the preset threshold range to form a second supply zone;

The technical scheme has the beneficial effects that: by analyzing the hair follicle again, the extracted supply area of the hair follicle is further divided, so that the extracted supply area is more accurate.

The method provided by the embodiment of the invention automatically intercepts the three-dimensional frame containing the cylindrical structure, and comprises the following steps:

step E2: performing L point segmentation on the edge binary image to obtain L +1 line segments, setting a threshold value a of the shortest line segment in the L +1 line segments, removing the ultrashort line segment with the length less than a, splitting the joint of the L points, and splitting one edge into two edges when the edge is close to the other edge to avoid error connection;

when the connection probability between Fi and Fj is calculated, included angle constraint does not exist between the outlines of the three-dimensional model of the cylindrical structure, the line segment with the extremely short line segment smaller than a is deleted, only the distance between endpoints and the influence of the gray value are considered, the influence of the distance is represented as the proximity, and the influence of the gray value is represented as the similarity.

Further, the calculation formula of the connection probability p of Fi and Fj is: p ═ α p (b)_i,b_j)+βx(b_i,b_j) Where α, β are floating point numbers greater than 0 and less than 1, α is a weight of proximity, β is a weight of similarity, and α + β ═ 1.

It should be noted that: the volume of the constructed three-dimensional frame is necessarily larger than that of the cylindrical three-dimensional frame and contains all spatial coordinates of the cylindrical three-dimensional frame, and the three-dimensional frame comprises but is not limited to a multi-variant frame, a cylindrical frame and the like.

The technical scheme has the beneficial effects that: the three-dimensional frame with the cylindrical structure is constructed, and the complete cylindrical structure can be conveniently and automatically obtained.

Based on the above description, an embodiment of the present invention further provides an apparatus for traceless layered extraction, as shown in fig. 2, including:

detection module 1 for detect the hair follicle at human different positions, and obtain the hair follicle density that different positions correspond, hair follicle density divide into: a first follicle density, a second follicle density, a third follicle density;

the analysis module 2 is used for analyzing and dissecting hair follicle tissues of the region to be extracted, which are determined according to the hair follicle density detected by the detection module 1, analyzing the trace elements of the hairs in the hair follicle tissues and judging the health state of the hairs;

the determining module 3 is used for determining a supply area capable of extracting hair follicles according to the health state of the hairs judged by the analyzing module 2, wherein the supply area comprises a first supply area and a second supply area;

the extraction module 4 is used for extracting hair follicle tissues of a human body;

the control module 5 is used for controlling the extraction module 4 to extract the hair follicles in the supply area in a forward and reverse alternate rotation mode according to the depth of the hair follicles, the size of hair papillae and the hair growth direction, wherein for the extraction of each hair follicle, the extraction depth of the extraction module 4 is determined according to the depth of the hair follicle and the size of the hair papillae, and the extraction direction of the extraction module is determined according to the hair growth direction;

wherein, the first supply area and the second supply area adopt a transitional extraction mode to fuzzify the engagement degree of the hairs of the first supply area and the second supply area and the engagement degree of the hairs of the supply area and the peripheral area.

The technical scheme has the beneficial effects that: the relatively complete layered extraction device is provided, and the hair follicle is conveniently extracted.

According to the device provided by the embodiment of the invention, the mobile device 01 and the extraction device 02 are arranged in the extraction module;

as shown in fig. 3, the moving device 01 includes two moving chains 011, four connecting posts 012 are arranged between the two moving chains 011 and are symmetrically distributed, a symmetric telescopic chain 013 is arranged at the lower part of each moving chain 011, the moving chains 011 include a convex body 111, corresponding walking bodies 112 are uniformly installed on the convex body 111, each walking body 112 includes a base 1121 welded on the corresponding side wall of the convex body 111, a first power device 1122 and a second power device 1123 are respectively installed at two sides of the upper surface of the base 1121, the first power device 1122 and the second power device 1123 are respectively installed with corresponding first flange plate 1124 and second flange plate 1125 through threads, moving bodies 1126 are respectively installed at the upper ends of the first flange plate 1124 and the second flange plate 1125, two fixing posts a are symmetrically arranged at the middle part of the upper surface of the base 1121, a ring-fixing post is sleeved with a limiting block 1127, the upper end of the limiting block 1127 is connected with the lower surface of the moving body 1126, the limiting block 1127 is located on one side of the first power device 1122 or the second power device 1123, the corresponding longitudinal retainer 1128 is welded on the upper surface of the base 1121, the corresponding transverse retainer 1129 is welded on the lower surface of the moving body 1126, the transverse retainer 1129 is sleeved on the longitudinal retainer 1128, wherein the edge of the upper surface of the base 1121 is fixedly connected with a plurality of groups of fixing bodies 1130, the number of the groups of fixing bodies 1130 is 2-5, the distance between each adjacent group of fixing bodies 1130 is equal, the side surface of the convex body 111 is fixedly connected with the driving motor 1133 and the starting switch 1134, the driving motor 1133 is a servo motor or a stepping motor, the upper surfaces of the groups of fixing bodies 1130 are fixedly connected with the inner cavity 1131, the side surface of the inner cavity 1131 is hinged with the handle 1132, an accommodating grid is arranged in the inner cavity 1131, an extraction device 02 is arranged in the accommodating grid, and a;

as shown in fig. 4, the extraction device 02 includes: drill bit 021, first pipeline 022, second pipeline 023, annular grab handle 024, grab handle 025, drill bit 021 size and locating hole looks adaptation, the locating hole evenly distributes on a plurality of polygon locating pieces, the polygon locating piece is located the position of drawing of human body, a port of first pipeline 022 is provided with grab handle 025, grab handle 025 is inside to be hollow structure, first pipeline 022 inlays in hollow structure, the surface of first pipeline 022 is equipped with first dimpled grain 026, grab handle 025 internal surface is provided with second dimpled grain 027, fix first pipeline 022 and grab handle 025 mutually through first dimpled grain 026 and second dimpled grain 027, drill bit 021 is embedded with the other end of first pipeline 022 and is even, grab handle 025's top is provided with rotator 026, the outside of rotator 026 is provided with rotatory caulking groove, the 025 external surface is provided with arch 027, be provided with limit arch 028 rather than assorted near arch 027, limit arch 028 is located grab handle 028025, second pipeline 023 surface is provided with annular and holds pole 024, and the one end that pole 024 was held to the annular is provided with connecting rod 241, the one end of connecting rod 241 is rotated with the end of the first section that pole 024 was held to the annular and is connected, be provided with recess 242 on the connecting rod 241, the inside rotation strip 243 that is provided with of recess 242, the inside passageway 231 that is provided with of second pipeline 023, the part that passageway 231 is connected with second pipeline 023 is provided with and draws the mouth, it is provided with cutter 232 to draw a mouthful one side, the one end of second pipeline 023 is provided with the operating body, be provided with gear 233 on the surface of operating body, gear 233 coincides with the axis of second pipeline 023, the external diameter of first pipeline 022 is less than the internal diameter of.

The working principle of the mobile device is as follows: the mobile device and the extraction device are controlled to work by the driving motor and the starting switch, the connecting column of the mobile device and the extraction device has the functions of connecting and fixedly supporting two mobile chains, the mobile chain and the telescopic chain are driven to travel by the overdrive, when the telescopic chain automatically travels, the traveling body simultaneously operates from multiple directions, a plurality of uniformly distributed traveling supporting forces exist during the operation, the uniform supporting performance is good, the self-stabilizing traveling performance is good, the flange plate has the function of connecting the power device and the moving body, the two fixing columns a have the function of positioning the positions of the limiting blocks, the limiting blocks have the function of damping and limiting, the moving body can slowly and stably accord with the moving direction of the mobile chains under the action of the first power device and the second power device under the action of the limiting blocks, and the movement and fixed distance of the mobile chains are limited by the longitudinal limiting bodies and the transverse limiting bodies, when the extraction device is used, the accommodating grids of the inner cavity are pulled out through the handle to obtain the extraction device, and meanwhile, the distance between the supply area and the accommodating grids is sensed through the distance sensor;

the working principle of the extraction device is as follows: inserting a drill bit into hair follicles obtained in the positioning hole, pinching the grab handle and the annular holding rod and enabling the grab handle and the annular holding rod to rotate relatively, enabling the holding rod to drive the connecting rod to drive the gear to rotate, keeping the gear in a meshing state with the rotating strip all the time due to the limiting effect of the groove, enabling the gear to drive the second pipeline to rotate relative to the first pipeline, enabling the second pipeline to move forwards on a rotating axis relative to the first pipeline under the action of the protrusion and the rotating caulking groove, enabling the cutter to rotate to cut hair follicle tissues, then holding the integral hair follicle tissues of the grab handle and the annular holding rod to be drawn out, wherein when the grab handle and the annular holding rod enable the second pipeline to move forwards, the connecting rod rotates relative to the holding rod, the connecting rod is crossed with the second pipeline and moves relative to the second pipeline, enabling the rotating strip and the gear to be meshed with the connecting rod all the time due, make the rotating strip can produce certain displacement in the axis of rotation of gear relative to the gear, prevent that rotating strip and gear from exceeding intermeshing's scope, its advantage is: the stability of extraction element use is improved, strengthens its practicality.

The technical scheme has the beneficial effects that: draw the in-process and combine as an organic whole through mobile device and extraction element and draw, supply the district and hold the distance between the check through judging, control mobile device removes corresponding position, conveniently acquires and uses extraction element, improves extraction efficiency.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. An apparatus for traceless layered extraction, comprising:

wherein, the first supply area and the second supply area adopt a transitional extraction mode to fuzzify the engagement degree of the first supply area and the second supply area and the engagement degree of the supply area and the hair of the peripheral area;

the extraction module is internally provided with a moving device (01) and an extraction device (02);

the moving device (01) comprises two moving chains (011), four connecting columns (012) are arranged between the two moving chains (011) and are symmetrically distributed, the lower portion of each moving chain (011) is provided with a symmetrical telescopic chain (013), each moving chain (011) comprises a convex body (111), corresponding walking bodies (112) are uniformly installed on the convex bodies (111), each walking body (112) comprises a base (1121) welded to the corresponding side wall of the convex body (111), a first power device (1122) and a second power device (1123) are installed on two sides of the upper surface of the base (1121) respectively, the first power device (1122) and the second power device (1123) are installed with corresponding first flange discs (1124) and second flange discs (1125) through threads respectively, and moving bodies (1126) are arranged at the upper ends of the first flange discs (1124) and the second flange discs (1125) respectively, two fixing columns a are symmetrically arranged in the middle of the upper surface of the base (1121), a limiting block (1127) is sleeved on the fixing columns a in a surrounding manner, the upper end of the limiting block (1127) is connected with the lower surface of the moving body (1126), the limiting block (1127) is positioned on one side of the first power device (1122) or the second power device (1123), a corresponding longitudinal fixing body (1128) is welded on the upper surface of the base (1121), a corresponding transverse fixing body (1129) is welded on the lower surface of the moving body (1126), the transverse fixing body (1129) is sleeved on the longitudinal fixing body (1128), wherein a plurality of groups of fixing bodies (1130) are fixedly connected at the edge of the upper surface of the base (1121), the plurality of groups of fixing bodies (1130) are 2-5 groups, the distance between each adjacent group of fixing bodies (1130) is equal, and the side surface of the convex body (111) is fixedly connected with a driving motor (1133) and a starting switch (1134), the driving motor (1133) is a servo motor or a stepping motor, the upper surfaces of the multiple groups of fixing bodies (1130) are fixedly connected with the inner cavity (1131), a handle (1132) is hinged to the side surface of the inner cavity (1131), an accommodating grid is arranged in the inner cavity (1131), an extraction device (02) is placed in the accommodating grid, and a distance sensor is arranged on the outer surface of the accommodating grid;

the extraction device (02) comprises: drill bit (021), first pipeline (022), second pipeline (023), annular are held pole (024), grab handle (025), drill bit (021) size and locating hole looks adaptation, the locating hole evenly distributed on a plurality of polygon locating pieces, the polygon locating piece is located the position of extracting of human body, a port of first pipeline (022) is provided with grab handle (025), grab handle (025) inside is hollow structure, first pipeline (022) inlay in hollow structure, the surface of first pipeline (022) is equipped with first dimpled grain (026), grab handle (025) internal surface is provided with second dimpled grain (027), through first dimpled grain (026) with second dimpled grain (027) will first pipeline (022) with grab handle (025) is fixed mutually, drill bit (021) with the other end looks inlay and link to each other of first pipeline (022), the top of grab handle (025) is provided with rotator (026), the outside of rotator (026) is provided with rotatory caulking groove, grab handle (025) surface is provided with arch (027), arch (027) is provided with rather than assorted limit protruding (028) near, limit protruding (028) are located grab handle (025) surface, second pipeline (023) surface is provided with annular holding rod (024), and the one end of annular holding rod (024) is provided with connecting rod (241), the one end of connecting rod (241) with the terminal rotation of the first section of annular holding rod (024) is connected, be provided with recess (242) on connecting rod (241), the inside strip (243) that rotates that is provided with of recess (242), the inside passageway (243) that is provided with of second pipeline (023), passageway (231) with the part that second pipeline (023) is connected is provided with draws the mouth, draw a mouthful one side and be provided with cutter (232), the one end of second pipeline (023) is provided with the operation body, be provided with gear (233) on the surface of operation body, gear (233) with the axis coincidence of second pipeline (023), the external diameter of first pipeline (022) is less than the internal diameter of second pipeline (023).