WO2016201768A1

WO2016201768A1 - Method for customizing ear-worn device

Info

Publication number: WO2016201768A1
Application number: PCT/CN2015/085526
Authority: WO
Inventors: 俞辰; 周威; 岐维佳
Original assignee: 西安慕声电子科技有限公司
Priority date: 2015-06-16
Filing date: 2015-07-30
Publication date: 2016-12-22
Also published as: CN106327568B; CN106327568A

Abstract

A method for customizing a ear-worn device. By means of employing images and a reference object, a customizing user having such need is allowed to provide conveniently the structures of the ears of self while obviating the need for special materials and tools. By means of a method for feature points, a method for acquiring ear concha models is greatly simplified, and support for implementing mass customization is provided. By means of comparison and selection between the features of the ears of the customizing user and an acquired actual model library, accurate acquisition of the structures of the ears is ensured, a customized worn device is made to conform to the structures of the ears of a human body, and user experience is increased to the greatest extent. By employing a method for flexible selection of feature points and allowing a designer to make adjustments to some structures of a worn device on the basis of design habits of self, the flexibility in design is increased, and needs for personalized customization are satisfied. The present method is simple and practicable, facilitates customization of a popular ear-worn device, and has great market prospects.

Description

Method for customizing ear wearing device

Technical field

The invention belongs to the technical field of ear wearing equipment customization, and in particular relates to a method for customizing an ear wearing device.

Background technique

The ear is a very important sensory organ of the human body and an important part of the body's access to external information and communication. The structure of the human ear is complex, the positional relationship between the tragus and the tragus and the inter-panel notch is uncertain, and the volume of the ear cavity is uncertain, which causes the ear cavity of the wearing device to be inserted into the ear cavity to the human ear. The tragus, the deformation of the tragus, the ear cavity, and the tragus between the tragus are different, and because the fat layer of the epidermis tissue of the ear cavity is thin, the deformation caused by the compression of the earplug ear device on the human ear causes The pain in the human ear seriously affects the wearing experience.

Therefore, in order to solve the discomfort that the wearing device brings to people, it is necessary to solve the problem of the difference of the human ear, and to customize the customization for different people. In the prior art, the individualization of the ear is completed, and the model of the human ear is mainly used in two ways. One is to inject the medical foam material into the ear canal, and the ear canal is inverted; the model is taken out, and then Scan the ear canal mold through a 3D scanner to obtain a 3D model of the ear canal or probe the 3D scanner into the human ear canal to directly acquire the 3D model; both methods for acquiring ear features require special Materials or tools are difficult to achieve for mass customization.

Summary of the invention

It is an object of the present invention to overcome the problem of prior art customization methods that rely on special materials or tools that fail to meet popular customization needs.

To this end, the present invention provides a method of customizing an ear wearing device comprising the steps of:

Step 1: Establish a database of ear wearing device models;

Step 2: acquiring characteristic parameters of the customized user's ear cavity;

Step 3: comparing the obtained characteristic parameters of the customized user's ear cavity with the ear wearing device model database to obtain the most suitable model;

Step 4: Customize the wearing device by acquiring the model.

The ear wearing device model database is obtained by collecting and collecting the ear data of a large number of people of different ages, genders and body types.

On the basis of the model database, it is necessary to obtain the ear parameters of the customized user. The customized ear device can be binaural, or only one of the ear wearing devices can be customized according to the user's needs. The method for obtaining the characteristic parameters of the ear cavity includes the following steps:

Step 1. In a certain plane, taking a measurable object as a reference, obtaining a picture of the ear at the same ratio as the reference object;

Step 2: In the acquired picture, the right ear is marked in a clockwise direction, and the left ear is marked in a counterclockwise direction, and the front of the ear is marked. Point, apex bulge starting point, otlaugus bulging highest point, tragus bulge ending point, trajectory apex between tragus, starting point of tragus protrusion, highest point of tragus protrusion, end of tragus protrusion Point, the intersection of the ear wheel extension line and the pair of the ear wheel (referred to as the ear pair intersection point), the deepest point of the ear wheel foot convex to the ear cavity;

Step 3: calculating a ratio of the actual size to the visible size on the picture according to the actual size of the reference object and the visible size of the reference object on the picture;

Step 4: Obtain the distance L between the apex of the anterior incision of the ear and the apex of the trajectory between the tragus, the distance K from the point of intersection of the ear to the apex of the anterior incision of the ear and the apex of the trajectory between the tragus, and the intersection of the ear to the ear. The vertical line connecting the vertex of the notch to the apex of the tragus and the trajectory of the trajectory will divide the ratio of the line P, the highest point of the tragus protrusion and the distance M to the highest point of the tragus protrusion, the end point of the tragus protrusion and the opposite ear The distance N of the starting point of the screen protrusion, the line connecting the highest point of the tragus protrusion and the end point of the tragus protrusion, and the angle A between the starting point of the tragus protrusion and the line connecting the highest point of the tragus protrusion (extension line) The distance from the highest point of the tragus protrusion to the line connecting the apex of the tragus to the intersection of the ear and the intersection point of the ear, the distance from the deepest point of the ear wheel to the ear bulge, and the distance between the point of intersection of the ear and the apex of the ear. The distance from the highest point of the tragus protrusion to the line connecting the apex of the anterior ear and the apex of the tragus, and the deepest point of the bulge of the ear wheel to the ear cavity and the apex of the notch, the intersection of the ear and the ear The positional relationship of the triangle formed by the apex of the front notch.

In the picture obtained by the above method, the form of the picture may be one of the following two forms.

(1) The ear and the reference object are in the same picture, the ear ear cavity is visible, and the reference object needs to ensure that at least one measurable length is visible;

(2) The ear and the reference object are in different pictures, the angles of the two pictures are the same, the proportion of the objects in the picture is the same, the ear ear cavity is visible, and the reference object needs to ensure that at least one measurable length is visible. .

The acquired picture should include the picture of the left ear and the picture of the right ear. The requirements for the picture of the left ear and the picture of the right ear are the same, and the requirements of the picture in the above method are met.

When the feature points are marked, the order of the feature points can be arbitrary, that is, the feature points can be marked according to different directions according to the habit, and the selected feature points are not because of the front and back of the label and the direction of the label. A change has occurred.

The characteristic parameters of the ear cavity of the left ear and the right ear of the customized user are respectively obtained, and the left ear and the right ear are respectively compared with the model in the model database, and the most matching model is selected. The specific operation of comparing the obtained characteristic parameters of the customized user's ear cavity with the model database of the ear wearing device includes the following steps:

In step 1, the distance L (unit: mm) of the apex of the notch in front of the ear and the apex of the tragus is taken as a reference parameter, and the comparison is performed in the database. When the distance of the corresponding parameter of the model in the database is in the range (L-5) When the range of ~(L+2) (unit: mm) is considered, the model is considered to be eligible, and a subset of the model that meets the condition is obtained;

Step 2, the distance from the intersection of the ear to the line connecting the apex of the anterior ear to the apex of the tragus, the intersection of the ear to the intersection of the apex of the ear and the apex of the tragus between the ear and the trajectory The ratio P of the line segmentation is a reference parameter, which is compared in the database model subset obtained in the previous step. When the distance of the corresponding parameter of the model in the database is in the range of (K-5) to (K+2) (unit: mm) And within the range of 0.9P to 1.1P, the model is considered to be eligible, and a subset of the model that meets the condition is obtained;

Step 3, taking the distance between the highest point of the tragus protrusion and the highest point of the tragus protrusion M (unit: mm), the end point of the tragus protrusion, and the distance N (unit: mm) from the starting point of the tragus protrusion as a reference The parameters are compared in the database model subset obtained in the previous step. When the corresponding parameters of the model in the database are in the range of (M-5) ~ (M+2) (unit: mm) and (N-5) ~ ( N+2) When the range is (in millimeters), the model is considered to be eligible, and a subset of the model that meets the condition is obtained;

Step 4: The angle between the highest point of the tragus protrusion and the end point of the tragus protrusion and the line connecting the starting point of the tragus protrusion and the highest point of the tragus protrusion (extension line) (unit: degree As a reference parameter, compare the database model subsets obtained in the previous step. When the angle range of the corresponding parameters of the model in the database is within the range of (A-20) to (A+20) (unit: degree), The model is eligible to obtain a subset of models that meet the criteria;

Step 5: Connect the intersection of the apex of the tragus and the ear to obtain the distance X (unit: mm) from the highest point of the tragus protrusion to the connection; connect the ear to the intersection point and the apex of the ear to obtain the ear wheel The distance from the deepest point of the ear cavity to the line Y (unit: mm); connect the apex of the notch between the apex of the ear and the tragus, and obtain the distance Z from the highest point of the tragus protrusion to the line ( Unit: mm); compare in the database model subset obtained in the previous step. If the ear of the ear wheel protrudes to the ear cavity, the deepest point falls into the triangle formed by the apex of the tragus, the intersection of the ear and the apex of the ear. Externally, when the corresponding parameter of the model in the database satisfies the condition (1), the model is considered to be eligible;

(1) The corresponding X value ranges from (X-5) to (X+2) (unit: mm), and the corresponding Y value ranges from (Y-5) to (Y+2) (unit: mm);

If the deepest point of the lobe to the ear cavity protrudes into the triangle formed by the apex of the tragus, the intersection of the ear and the apex of the ear, when the corresponding parameter of the model in the database satisfies the condition (2), That is, the model is considered to be eligible;

(2) The corresponding X value ranges from (X-5) to (X+2) (unit: mm), and the corresponding Y value ranges from (Y-5) to (Y+2) (unit: mm), corresponding to the Z value. The range is from (Z-5) to (Z+2) (unit: mm);

Obtain an eligible subset of models;

Step 6. Repeat steps 1 to 5 for all the ear wearing devices of the determined subset of the ear wearing device, repeating a plurality of times to reduce the error;

In step 7, according to the obtained model subset, the model with the smallest error is obtained by using the reference parameters in the above steps.

In the operation steps of comparing the feature parameters of the ear user cavity of the customized user and the model database of the ear wearing device, the order of finding the subset in steps 1 to 5 may be arbitrary, and the child acquired in each step Set the initial database as the next decision, reducing the model comparison time.

In the operation steps of comparing the feature parameters of the ear user cavity of the customized user with the model database of the ear wearing device, the following operations may also be performed, and the order of finding the subset in steps 1 to 5 may be any At each step, the entire database is used as the initial database, and finally the subsets obtained in the five steps are intersected to obtain the final subset.

Among the 10 feature points marked, you can select which points to evaluate the ear features according to the requirements. The specific method is to mark the anterior apex of the ear, the starting point of the tragus, the highest point of the tragus, and the ear. The end point of the screen bulge, the apex of the tragus between the tragus, the starting point of the tragus, the highest point of the tragus, the end of the trajectory, the intersection of the ear, the deepest protrusion of the ear to the ear cavity The point is assigned a weight, and the weight value is 0 or 1. If the weight value of a point is 0, the point is not used in the process of obtaining the subset. If the weight value of the point is specified to be 1, then the subset is acquired. With this point, all the labeled feature points are assigned weights according to the parameters of interest.

The controlled deformation of the ear wearing device is performed on the parameter of interest by moving the point of the ear wearing device model by a Gaussian function. The Gaussian function has peaks and variances, where the peaks compensate for differences between the ear-wearing device model and the ear, and the variance can perform the ear The model of the wearing device is rounded so that the aesthetic characteristics of the ear wearing device are not lost.

The beneficial effects of the present invention are mainly manifested in the following aspects:

(1) By using pictures and reference materials, customized users who need it can easily provide their own ear structure without special materials and tools.

(2) The method of obtaining feature points greatly simplifies the method of obtaining the model of the ear cavity, and provides support for mass customization.

(3) By comparing and selecting the ear features of the customized user with the actual model library obtained, the accurate acquisition of the ear structure is ensured, and the customized wearing device is more in line with the ear structure of the human body, thereby maximizing the user. Experience.

(4) The flexible feature point selection method and the designer can adjust some structures of the wearing device according to their own design habits, so that the design is more flexible and meets the personalized customization requirements.

DRAWINGS

1 is a flow chart of a design of a first embodiment of the present invention.

2 is a schematic diagram of a left ear feature point labeling according to a first embodiment of the present invention.

FIG. 3 is a schematic diagram of a left ear feature point labeling according to a second embodiment of the present invention.

The reference numerals indicate: 1. the apex of the ear in front of the ear; 2. the starting point of the tragus protrusion; 3. the highest point of the tragus protrusion; 4. the end point of the tragus protrusion; 5. the apex of the notch between the tragus; The starting point of the tragus protrusion; 7, the highest point of the tragus convex; 8, the end point of the tragus convex; 9, the intersection of the extension of the ear wheel and the foot of the ear (ear to the intersection); 10, the direction of the ear wheel The deepest point of the ear cavity.

detailed description

The invention will now be further described in conjunction with the embodiments and the accompanying drawings.

Example 1

1 is a design flow chart of the first embodiment of the present invention. On the basis of establishing a database of the ear wearing device model, the characteristic parameters of the binaural ear cavity of the customized user are obtained, and the obtaining steps are as follows:

Step 1. Place a one-dollar coin next to the ear, the coin does not block the ear, and the diameter of the coin is not blocked by other objects, and the picture of the ear and the coin is obtained; in the same way, the picture of the coin and the other ear is obtained;

Step 2: In the acquired picture, the right ear is marked in a clockwise direction, and the left ear is marked in a counterclockwise direction, as shown in FIG. 2 is a schematic diagram of the left ear feature point labeling according to the first embodiment of the present invention, and the ear tangential apex is marked. 1. The starting point of the tragus protrusion, the highest point of the tragus protrusion 3, the end point of the tragus protrusion 4, the apex 5 of the tragus between the tragus, the starting point of the ridge protrusion 6, the highest point of the tragus protrusion 7, The deepest point 10 of the tragus protrusion end point 8, the ear pair intersection point 9, the ear wheel foot convex to the ear arm cavity;

Step 3, calculating the ratio of the actual size to the visible size on the picture according to the actual diameter of the coin and the size of the visible diameter on the picture;

Step 4: According to the ratio of the acquired picture to the actual size, obtain the distance L between the apex 1 of the ear and the apex 5 of the tragus, the intersection of the ear to the intersection 9 and the vertex 1 of the ear and the apex of the tragus 5 line distance K, ear pair intersection point 9 to the front of the ear, the apex 1 and the apex of the trajectory between the tragus and the line 5 are perpendicular to the line division ratio P, the highest point of the tragus protrusion 3 and the pair The highest occlusion The distance M of the point 7, the end point 4 of the tragus protrusion and the distance N to the starting point 6 of the tragus protrusion, the line connecting the highest point 3 of the tragus protrusion and the end point 4 of the tragus protrusion, and the starting point of the tragus protrusion 6 The angle A with the line (extension line) of the highest point 7 of the tragus protrusion, the highest point 7 of the tragus protrusion, the distance between the apex 5 of the tragus and the intersection of the ear and the intersection point X, the ear wheel The distance from the foot to the ear cavity is the deepest point 10 to the point where the ear is at the intersection point 9 and the apex of the ear is 5, the highest point of the tragus is raised to 3, and the apex of the ear is 1 and the apex of the trajectory is 5 The distance Z of the connection and the positional relationship between the deepest point 10 of the ear wheel to the ear cavity and the triangle formed by the apex 5 of the tragus, the intersection of the ear 9 and the apex 1 of the ear.

After obtaining the above characteristic parameter parameters, the feature parameters are compared with the data in the model database, and one or several parameters are used as comparison parameters each time, and the qualified subsets in the model library are obtained. The specific operation of comparing the obtained characteristic parameters of the customized user's ear cavity with the model database of the ear wearing device includes the following steps:

In step 1, the distance L (unit: mm) of the apex 1 of the anterior ear and the apex 5 of the tragus is taken as a reference parameter, and the comparison is performed in the database. When the distance of the corresponding parameter of the model in the database is in the range (L) When -5) ~ (L + 2) (unit: mm), the model is considered to be eligible, and a subset of the model that meets the condition is obtained;

Step 2, connecting the ear to the intersection point 9 to the distance K between the apex 1 of the ear and the apex 5 of the tragus between the tragus, the ear to the intersection 9 to the apex 1 of the anterior ear and the apex 5 of the tragus The vertical line of the vertical line divides the proportion P of the connection into reference parameters, and compares them in the database model subset obtained in the previous step. When the corresponding parameters of the model in the database are in the range of (K-5) to (K+2) When (in mm) and 0.9P to 1.1P, the model is considered to be eligible, and a subset of the model that meets the condition is obtained;

Step 3, the distance M (unit: mm) from the highest point 3 of the tragus protrusion and the highest point 7 of the tragus protrusion, the end point 4 of the tragus protrusion, and the distance N to the starting point 6 of the tragus protrusion (unit: Mm) is the reference parameter, which is compared in the database model subset obtained in the previous step. When the corresponding parameters of the model in the database are in the range of (M-5) ~ (M + 2) (unit: mm) and (N- 5)~(N+2) (unit: mm), the model is considered to be eligible, and a subset of the model that meets the condition is obtained;

Step 4, the angle between the highest point 3 of the tragus protrusion and the end point 4 of the tragus protrusion and the line connecting the starting point 6 of the tragus protrusion and the highest point 7 of the tragus protrusion (extension line) (Unit: degree) is the reference parameter, which is compared in the database model subset obtained in the previous step. When the corresponding parameter of the model in the database has an angular range of (A-20) to (A+20) (unit: degree) Internally, the model is considered to be eligible, and a subset of the model that meets the condition is obtained;

Step 5, connecting the apex 5 between the tragus and the intersection of the ear, and obtaining the distance X (unit: mm) from the highest point 3 of the tragus protrusion to the connection; connecting the ear to the intersection point 9 and the anterior apex of the ear 1. Obtain the distance from the ear of the ear wheel to the deepest point of the ear cavity to the line Y (unit: mm); connect the apex of the anterior ear 1 and the apex of the tragus 5 to obtain the highest point of the tragus 3 to the distance Z of the connection (unit: mm); in the database model subset obtained in the previous step for comparison, if the ear wheel foot to the ear cavity convex deepest point 10 falls into the apex of the notch between the tragus 5, ear For the outside of the triangle formed by the intersection point 9 and the anterior apex 1 of the ear, when the corresponding parameter of the model in the database satisfies the condition (1), the model is considered to be in accordance with the condition;

If the deepest point 10 of the lobe foot to the ear cavity protrudes into the triangle formed by the apex 5 of the tragus, the intersection of the ear and the vertex 1 of the ear, when the corresponding parameters of the model in the database satisfy the condition ( 2), that is, the model is considered to be eligible;

Obtain an eligible subset of models;

After the characteristic parameters of the left ear and the right ear are selected through the above steps, a most suitable model is obtained as the ear model of the customized user. Customize the shape of the earwear device with model parameters.

Example 2

On the basis of Embodiment 1, further, the customized user-provided picture may be any object as a reference, and the operation method is to place the reference object beside the ear, the reference object does not block the ear, and the reference object A measurable length is not blocked by other objects, and a picture of the ear and the reference object is obtained; FIG. 3 is a schematic diagram of the left ear feature point labeling according to the second embodiment of the present invention, and the reference object and the other ear are obtained in the same manner. After obtaining the picture, the user measures the actual length of the visible part of the reference in the photo, marks it on the picture, and obtains the ratio of the length of the picture to the actual size by the visible length and the actual length on the picture, thereby Get the actual parameters.

In step 1, the distance L (unit: mm) of the apex 1 of the anterior ear and the apex 5 of the tragus is taken as a reference parameter, and the comparison is performed in the database. When the distance of the corresponding parameter of the model in the database is in the range (L) -5) ~ (L + 2) (unit: mm), the model is considered to meet the conditions, obtain a model subset U1 that meets the condition;

Step 2, connecting the ear to the intersection point 9 to the distance K between the apex 1 of the ear and the apex 5 of the tragus between the tragus, the ear to the intersection 9 to the apex 1 of the anterior ear and the apex 5 of the tragus The vertical line of the vertical line divides the proportion P of the connection into reference parameters, and compares them in the database model subset obtained in the previous step. When the corresponding parameters of the model in the database are in the range of (K-5) to (K+2) When (in mm) and 0.9P to 1.1P, the model is considered to be eligible, and a model subset U2 that meets the condition is obtained;

Step 3, the distance M (unit: mm) from the highest point 3 of the tragus protrusion and the highest point 7 of the tragus protrusion, the end point 4 of the tragus protrusion, and the distance N to the starting point 6 of the tragus protrusion (unit: Mm) is the reference parameter, which is compared in the database model subset obtained in the previous step. When the corresponding parameters of the model in the database are in the range of (M-5) ~ (M + 2) (unit: mm) and (N- 5) ~ (N + 2) (unit: mm), the model is considered to meet the conditions, obtain a model subset U3 that meets the condition;

Step 4, the angle between the highest point 3 of the tragus protrusion and the end point 4 of the tragus protrusion and the line connecting the starting point 6 of the tragus protrusion and the highest point 7 of the tragus protrusion (extension line) (Unit: degree) is the reference parameter, which is compared in the database model subset obtained in the previous step. When the corresponding parameter of the model in the database has an angular range of (A-20) to (A+20) (unit: degree) Internally, the model is considered to be eligible, and a subset of models U4 that meets the condition is obtained;

Step 5, connecting the apex 5 between the tragus and the intersection of the ear, and obtaining the distance X (unit: mm) from the highest point 3 of the tragus protrusion to the connection; connecting the ear to the intersection point 9 and the anterior apex of the ear 1. Obtain the distance from the ear of the ear wheel to the deepest point of the ear cavity to the line 10 From Y (unit: mm); connect the apex 1 between the apex of the ear and the apex 5 between the tragus, and obtain the distance Z from the highest point 3 of the tragus to the connection (unit: mm); obtained in the previous step The database model subset is compared, if the deepest point 10 of the ear wheel to the ear cavity is falling into the triangle outside the apex 5 between the tragus, the ear to the intersection 9 and the apex 1 of the ear, when in the database When the corresponding parameter of the model satisfies the condition (1), the model is considered to be in compliance with the condition;

Obtain an eligible subset of models U5;

Step 7. Obtain an intersection of the acquired model subsets U1, U2, U3, U4, and U5 to obtain a model subset. According to the obtained model subset, obtain the model with the smallest error by using the reference parameters in the above steps.

Example 3

On the basis of establishing the database of the ear wearing device model, the characteristic parameters of the binaural ear cavity of the customized user are obtained, and the obtaining steps are as follows:

Step 2: In the acquired picture, the right ear is marked in a clockwise direction, and the left ear is marked in a counterclockwise direction, and the apex of the ear front is marked, the starting point of the tragus protrusion, the highest point of the tragus protrusion 3, the tragus Bumping end point 4, apex apex 5 between tragus, apex bulge starting point 6, apex bulging highest point 7, otizing bulge ending point 8, ear to intersection point 9, ear wheel foot to ear The deepest point of the cavity protrusion 10;

Step 4: According to the ratio of the acquired picture to the actual size, obtain the distance L between the apex 1 of the ear and the apex 5 of the tragus, the intersection of the ear to the intersection 9 and the vertex 1 of the ear and the apex of the tragus 5 line distance K, ear pair intersection point 9 to the front of the ear, the apex 1 and the apex of the trajectory between the tragus and the line 5 are perpendicular to the line division ratio P, the highest point of the tragus protrusion 3 and the pair The distance M of the highest point 7 of the tragus protrusion, the end point 4 of the tragus protrusion and the distance N to the starting point 6 of the tragus protrusion, the line connecting the highest point 3 of the tragus protrusion and the end point 4 of the tragus protrusion The angle between the start point 6 of the tragus protrusion and the line (extension line) of the highest point 7 of the tragus protrusion, the highest point 7 of the tragus protrusion, the apex of the notch 5 between the tragus and the intersection point 9 of the ear The distance X, the ear wheel foot to the ear cavity cavity, the deepest point 10 to the ear The distance Y between the intersection point 9 and the apex 5 of the anterior incision of the ear, the highest point 3 of the tragus protrusion to the distance Z of the apex 1 of the anterior ear and the apex 5 of the trajectory between the tragus and the ear to the ear cavity The positional relationship between the deepest point 10 of the bulge and the triangle formed by the apex 5 of the tragus, the intersection point 9 of the ear, and the apex 1 of the anterior ear.

Obtain an eligible subset of models;

Step 6. Repeat steps 1 through 5 for all ear wearing devices of the determined subset of ear wearing devices, multiple times Repeat, reduce the error;

After the characteristic parameters of the left ear and the right ear are selected through the above steps, a most suitable model is obtained as the ear model of the customized user. A controlled deformation of the ear wearing device is performed on the parameter of interest by moving a point of the ear wearing device model by a Gaussian function. Obtain the adjusted model parameters and customize the shape of the earwear device.

The above embodiments are merely illustrative of the present invention and are not intended to limit the scope of the present invention. It is obvious that various structural changes may be made without departing from the scope of the invention.

Claims

A method of customizing an ear wearing device, comprising the steps of:

Step 1: Establish a database of ear wearing device models;

Step 2: acquiring characteristic parameters of the customized user's ear cavity;

Step 3: comparing the obtained characteristic parameters of the customized user's ear cavity with the ear wearing device model database to obtain the most suitable model;

Step 4: Customize the wearing device by acquiring the model.
A method of customizing an ear wearing device according to any of the preceding claims, characterized in that the method for obtaining the characteristic parameters of the ear cavity comprises the following steps:

Step 1. In a certain plane, taking a measurable object as a reference, obtaining a picture of the ear at the same ratio as the reference object;

Step 2: In the acquired picture, the right ear is marked in a clockwise direction, and the left ear is marked in a counterclockwise direction, and the apex of the ear front trace, the start point of the tragus protrusion, the highest point of the tragus protrusion, and the end of the tragus protrusion are marked. Point, apex between the tragus, the starting point of the tragus, the highest point of the tragus, the end point of the tragus, the intersection of the extension of the ear and the foot of the ear (hereinafter referred to as the ear-to-intersection), The deepest point of the ear wheel raised to the ear cavity;

Step 3: calculating a ratio of the actual size to the visible size on the picture according to the actual size of the reference object and the visible size of the reference object on the picture;

Step 4: Obtain the distance L between the apex of the anterior incision of the ear and the apex of the trajectory between the tragus, the distance K from the point of intersection of the ear to the apex of the anterior incision of the ear and the apex of the trajectory between the tragus, and the intersection of the ear to the ear. The vertical line connecting the vertex of the notch to the apex of the tragus and the trajectory of the trajectory will divide the ratio of the line P, the highest point of the tragus protrusion and the distance M to the highest point of the tragus protrusion, the end point of the tragus protrusion and the opposite ear The distance N of the starting point of the screen protrusion, the line connecting the highest point of the tragus protrusion and the end point of the tragus protrusion, and the angle A between the starting point of the tragus protrusion and the line connecting the highest point of the tragus protrusion (extension line) The distance from the highest point of the tragus protrusion to the line connecting the apex of the tragus to the intersection of the ear and the intersection point of the ear, the distance from the deepest point of the ear wheel to the ear bulge, and the distance between the point of intersection of the ear and the apex of the ear. The distance from the highest point of the tragus protrusion to the line connecting the apex of the anterior ear and the apex of the tragus, and the deepest point of the bulge of the ear wheel to the ear cavity and the apex of the notch, the intersection of the ear and the ear The positional relationship of the triangle formed by the apex of the front notch.
The method for customizing an ear wearing device according to claim 2, wherein the picture acquired in the step 1 is one of the following two forms.

(1) The ear and the reference object are in the same picture, the ear ear cavity is visible, and the reference object needs to ensure that at least one measurable length is visible;

(2) The ear and the reference object are in different pictures, the angles of the two pictures are the same, the proportion of the objects in the picture is the same, the ear ear cavity is visible, and the reference object needs to ensure that at least one measurable length is visible. .
A method of customizing an ear wearing device according to claim 2, wherein the order in which the feature points are marked may be arbitrary.
A method for customizing an ear wearing device according to any of the preceding claims, characterized in that the specific operation of comparing the acquired characteristic parameters of the ear cavity of the customized user with the model database of the ear wearing device comprises the following step,

In step 1, the distance L (unit: mm) of the apex of the notch in front of the ear and the apex of the tragus is taken as a reference parameter, and the comparison is performed in the database. When the distance of the corresponding parameter of the model in the database is in the range (L-5) When the range of ~(L+2) (unit: mm) is considered, the model is considered to be eligible, and a subset of the model that meets the condition is obtained;

Step 2, the distance from the intersection of the ear to the line connecting the apex of the anterior ear to the apex of the tragus, the intersection of the ear to the intersection of the apex of the ear and the apex of the tragus between the ear and the trajectory The ratio P of the line segmentation is a reference parameter, which is compared in the database model subset obtained in the previous step. When the distance of the corresponding parameter of the model in the database is in the range of (K-5) to (K+2) (unit: mm) When the range is from 0.9P to 1.1P, the model is considered to be eligible, and a subset of the model that meets the condition is obtained;

Step 3, taking the distance between the highest point of the tragus protrusion and the highest point of the tragus protrusion M (unit: mm), the end point of the tragus protrusion, and the distance N (unit: mm) from the starting point of the tragus protrusion as a reference The parameters are compared in the database model subset obtained in the previous step. When the corresponding parameters of the model in the database are in the range of (M-5) ~ (M+2) (unit: mm) and (N-5) ~ ( When N+2) (in mm), the model is considered to be eligible, and a subset of the model that meets the condition is obtained;

Step 4: The angle between the highest point of the tragus protrusion and the end point of the tragus protrusion and the line connecting the starting point of the tragus protrusion and the highest point of the tragus protrusion (extension line) (unit: degree As a reference parameter, compare the database model subsets obtained in the previous step. When the angle range of the corresponding parameters of the model in the database is within the range of (A-20) to (A+20) (unit: degree), The model is eligible to obtain a subset of models that meet the criteria;

Step 5: Connect the intersection of the apex of the tragus and the ear to obtain the distance X (unit: mm) from the highest point of the tragus protrusion to the connection; connect the ear to the intersection point and the apex of the ear to obtain the ear wheel The distance from the deepest point of the ear cavity to the line Y (unit: mm); connect the apex of the notch between the apex of the ear and the tragus, and obtain the distance Z from the highest point of the tragus protrusion to the line ( Unit: mm); compare in the database model subset obtained in the previous step. If the ear of the ear wheel protrudes to the ear cavity, the deepest point falls into the triangle formed by the apex of the tragus, the intersection of the ear and the apex of the ear. Externally, when the corresponding parameter of the model in the database satisfies the condition (1), the model is considered to be eligible;

(1) The corresponding X value ranges from (X-5) to (X+2) (unit: mm), and the corresponding Y value ranges from (Y-5) to (Y+2) (unit: mm);

If the deepest point of the lobe to the ear cavity protrudes into the triangle formed by the apex of the tragus, the intersection of the ear and the apex of the ear, when the corresponding parameter of the model in the database satisfies the condition (2), That is, the model is considered to be eligible;

(2) The corresponding X value ranges from (X-5) to (X+2) (unit: mm), and the corresponding Y value ranges from (Y-5) to (Y+2) (unit: mm), corresponding to the Z value. The range is from (Z-5) to (Z+2) (unit: mm);

Obtain an eligible subset of models;

Step 6. Repeat steps 1 to 5 for all the ear wearing devices of the determined subset of the ear wearing device, repeating a plurality of times to reduce the error;

In step 7, according to the obtained model subset, the model with the smallest error is obtained by using the reference parameters in the above steps.
The method for customizing an ear wearing device according to claim 4, wherein the step of comparing the acquired characteristic parameters of the ear cavity of the customized user with the model database of the ear wearing device is performed. The order of finding the subset in steps 1 to 5 may be arbitrary, and the subset obtained in each step is used as the initial database for the next determination, and the model comparison time is reduced.
The method for customizing an ear wearing device according to claim 5, wherein the step of comparing the acquired characteristic parameters of the ear cavity of the customized user with the model database of the ear wearing device is performed. The order of finding the subsets in steps 1 to 5 may be arbitrary. Each step uses the entire database as the initial database, and finally the subsets obtained in the five steps are intersected to obtain the final subset.
A method for customizing an ear wearing device according to any of the preceding claims, characterized in that: the marked anterior ear apex, the tragus bulge starting point, the otlaugus bulging highest point, and the tragus bulge end Point, apex between the tragus, the starting point of the tragus, the highest point of the tragus, the end of the tragus, the intersection of the ear, the deepest point of the ear to the ear cavity, The weight value is 0 or 1. If the weight value of a point is 0, the point is not used in the process of obtaining the subset. If the weight of the point is specified as 1, the point is used in the process of obtaining the subset. All labeled feature points are assigned weights based on the parameters of interest.
A method of customizing an ear wearing device according to claim 8 wherein said point of wearing said ear wearing device model is performed by a Gaussian function to perform said ear wearing device on said parameter of interest Control deformation.
A method of customizing an ear wearing device according to claim 9, wherein the Gaussian function has a peak and a variance, wherein the peak compensates for the difference between the ear wearing device model and the ear, and the variance can execute the ear The model of the wearing device is rounded so that the aesthetic characteristics of the ear wearing device are not lost.