WO2021217547A1 - Procédé de conception automatique d'une monture de lunettes personnalisée par impression tridimensionnelle (3d) - Google Patents

Procédé de conception automatique d'une monture de lunettes personnalisée par impression tridimensionnelle (3d) Download PDF

Info

Publication number
WO2021217547A1
WO2021217547A1 PCT/CN2020/087978 CN2020087978W WO2021217547A1 WO 2021217547 A1 WO2021217547 A1 WO 2021217547A1 CN 2020087978 W CN2020087978 W CN 2020087978W WO 2021217547 A1 WO2021217547 A1 WO 2021217547A1
Authority
WO
WIPO (PCT)
Prior art keywords
frame
point
face
dimensional face
dimensional
Prior art date
Application number
PCT/CN2020/087978
Other languages
English (en)
Chinese (zh)
Inventor
周昆
任重
朱谷才
Original Assignee
浙江大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 浙江大学 filed Critical 浙江大学
Priority to PCT/CN2020/087978 priority Critical patent/WO2021217547A1/fr
Publication of WO2021217547A1 publication Critical patent/WO2021217547A1/fr

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/02—Goggles
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects

Definitions

  • the invention relates to an automatic design method for 3D printing customized goggles frame.
  • Goggles including windproof goggles, sports goggles and medical goggles, usually include a frame and elastic bands connected to both ends of the frame. There is a silicone strip on the edge of the back of the frame, and the goggles are tightened and worn on the eye sockets through the elastic bands. It can be covered around the eyes at all times to prevent airflow, dust, water stains, and other dirt from affecting the eyes and isolate the eyes from the outside world.
  • the goggles on the market are usually mass-produced according to specific standardized sizes, but each person’s facial contour, size, etc. are different, and there is a gap between the goggles and the wearer’s facial skin.
  • the setting of the silicone strip can reduce this gap to a certain extent, improve the protective effect, and can also reduce the pressure on the facial skin, but after long-term use, it is easy to form negative pressure around the eyes and make the eyes congested. , Swelling, and will leave marks on the face, poor wearing comfort, and affect the appearance.
  • the lenses of these standardized mass-produced goggles are usually integrally formed on the frame without any degree. Therefore, these goggles are usually large in size to facilitate the wearer's glasses and cover the goggles at the same time.
  • the present invention provides an automatic generation method for customizing and generating the goggles frame based on the wearer's face shape, which can make the generated goggles more comfortable and compliant to wear.
  • the present invention provides an automatic design method for 3D printing customized goggles, which includes the following steps:
  • step (1) and step (2) further include the following steps:
  • the three-dimensional face model includes a three-dimensional face mesh model and a set of three-dimensional facial feature points;
  • the step (A) specifically includes: dividing the eye strip area according to a three-dimensional face mesh model and a three-dimensional facial feature point set, and obtaining a point cloud set of the eye strip area;
  • the step (3) specifically includes:
  • the division of the eye strip area of the three-dimensional face model is based on the nose tip points, the eyebrow points at the two ends, and the contour points on the face at the two ends in the three-dimensional face model.
  • step (3.1) specifically includes:
  • the point on the back of the frame it is estimated to find the closest point set on the three-dimensional face model in the eye strip area, and find the back point on the plane fitted by this point set, along the positive direction of the face and the normal direction of the plane Projection point.
  • step (3.2) specifically includes:
  • the step (B) is further included: predicting the projection width of the back of the spectacle frame, and adjusting the width of the back of the spectacle frame according to the required width of the sponge strip.
  • the generated spectacle frame has a lens installation groove, and lenses of different degrees can be embedded on the spectacle frame through the lens installation groove on the spectacle frame.
  • the size of the eyepiece makes it lighter and more compact, and it can also improve the comfort when wearing it.
  • the beneficial effect of the present invention is that the present invention can provide customized goggles frames for users with different face shapes.
  • the back of the goggles generated on the basis of the present invention are more conformable to the contours of the face, and there is no difference between the frame and the facial skin. It is easy to produce gaps, not easy to generate negative pressure, and not easy to fall off, and the protective effect is good, so that the user's eyes are not prone to imprints, redness and swelling after long-term wear, and it is more comfortable to wear.
  • the custom-made goggles frame of the present invention is automatically generated. As long as the user provides a three-dimensional face model, a suitable frame can be automatically generated, which is more convenient and fast.
  • FIG. 1 is a flowchart of an embodiment of the present invention
  • FIG. 2 is a flowchart of step (A) of an embodiment of the present invention.
  • FIG. 3 is a specific flow chart of step (A) of an embodiment of the present invention.
  • Figure 4 is a specific flow chart of step (3) of an embodiment of the present invention.
  • Figure 5 is a specific flow chart of the step (3.1) of the embodiment of the present invention.
  • Figure 6 is a specific flow chart of the step (3.2) of the embodiment of the present invention.
  • FIG. 7 is a schematic diagram of using feature points to find the points of the eye strip area in an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of stretching and deforming the back of the spectacle frame in an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of the lens frame after being deformed and stretched in the embodiment of the present invention.
  • FIG. 1 The embodiment of the method for automatically generating a custom-made goggles frame of the present invention is shown in Figure 1, and includes the following steps:
  • the user in the present invention refers to a wearer of goggles, and the user's three-dimensional face model can be generated by scanning the user's head by a hardware device (for example, a 3D scanner or a mobile device with a 3D scanning function).
  • a hardware device for example, a 3D scanner or a mobile device with a 3D scanning function.
  • step (1) and step (2) further include step (A): dividing the eye strip area from the three-dimensional face model;
  • the three-dimensional face model includes a three-dimensional face grid model and a set of three-dimensional facial feature points, and obtaining a user's three-dimensional face model is specifically: reading a three-dimensional face model of a target object (ie, a user), and calculating corresponding features Point collection.
  • the step (A) specifically includes: dividing the eye strip area according to a three-dimensional face mesh model and a three-dimensional facial feature point set, and obtaining a point cloud set of the eye strip area;
  • the division of the eye strip area of the three-dimensional face model is based on the nose tip points, the eyebrow points on both ends, and the contour points on both ends of the face in the three-dimensional face model.
  • Point, the position of the contour points on both ends of the face select the points in the bounding box as the eye strip area points mentioned in the text (as shown in Figure 3).
  • the eye strip area divided from the three-dimensional face model is used as the basis for the deformation of the back of the frame, which makes the deformation process of the back of the frame more accurate, and can also improve the adaptability to the contour of the face.
  • the step (3) specifically includes:
  • Use the Laplacian Deformation method see http://www.cse.wustl.edu/ ⁇ taoju/cse554/lectures/lect08_Deformation.pdf) to find the overall position of the back point of the frame; after the deformation, if it is iterated The number of times is not over.
  • the step (3.1) specifically includes:
  • the point on the back of the frame it is estimated to find the closest point set on the three-dimensional face model in the eye strip area, and find the back point on the plane fitted by this point set, along the positive direction of the face and the normal direction of the plane Projection point.
  • the step (3.2) specifically includes:
  • the step (3) further includes step (A): predict the projection width of the back of the mirror frame, and adjust the width of the back of the mirror frame according to the required width of the sponge strip.
  • the generated spectacle frame has a lens installation groove, that is, the spectacle frame can be equipped with a lens.
  • the specific process of generating the spectacle frame is: based on the three-dimensional face mesh model and the three-dimensional facial feature point set to generate two complete lens grids composed of several columns of curves and several rows of curves directly in front of the eyes; according to the lens network
  • the outer edge vertex information of the grid and the parameters generated by the set glasses are generated to generate two complete lens circle grids; according to the type of glasses and the parameters generated by the set glasses, a complete nose mesh is generated between the two lens circle grids;
  • the three-dimensional mesh model of the frame can be generated by the above method, and the physical frame can be formed by three-dimensional printing technology.
  • the back edge of the frame can be pasted with sponge strips, and the two ends of the frame can be equipped with elastic bands or straps of suitable length to finally generate goggles.
  • the lens with the power adapted to the user can be embedded in the lens installation groove of the frame, so that the goggles have power, and the user does not need to wear the glasses at the same time, so that the size of the goggles can be reduced to make it It is more portable and improves wearing comfort.

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Ophthalmology & Optometry (AREA)
  • Heart & Thoracic Surgery (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Geometry (AREA)
  • Computer Graphics (AREA)
  • Biomedical Technology (AREA)
  • Software Systems (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Eyeglasses (AREA)

Abstract

La présente invention concerne un procédé de conception automatique d'une monture de lunettes personnalisée par impression tridimensionnelle (3D). Le procédé consiste à : (1) acquérir un modèle de visage tridimensionnel d'un utilisateur ; (2) générer une monture de lunettes à une position de port correspondant au modèle de visage tridimensionnel ; et (3) étirer et déformer le bord de l'arrière de la monture de lunettes dans la direction du visage du modèle de visage tridimensionnel, de telle sorte que le bord de l'arrière de la monture de lunettes épouse le contour de visage du modèle de visage tridimensionnel. Par conséquent, les lunettes générées peuvent être plus confortables et mieux ajustées à porter.
PCT/CN2020/087978 2020-04-30 2020-04-30 Procédé de conception automatique d'une monture de lunettes personnalisée par impression tridimensionnelle (3d) WO2021217547A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2020/087978 WO2021217547A1 (fr) 2020-04-30 2020-04-30 Procédé de conception automatique d'une monture de lunettes personnalisée par impression tridimensionnelle (3d)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2020/087978 WO2021217547A1 (fr) 2020-04-30 2020-04-30 Procédé de conception automatique d'une monture de lunettes personnalisée par impression tridimensionnelle (3d)

Publications (1)

Publication Number Publication Date
WO2021217547A1 true WO2021217547A1 (fr) 2021-11-04

Family

ID=78331630

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/087978 WO2021217547A1 (fr) 2020-04-30 2020-04-30 Procédé de conception automatique d'une monture de lunettes personnalisée par impression tridimensionnelle (3d)

Country Status (1)

Country Link
WO (1) WO2021217547A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117077479A (zh) * 2023-08-17 2023-11-17 北京斑头雁智能科技有限公司 人体工学眼镜设计及制备方法和人体工学眼镜

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101249293A (zh) * 2008-04-10 2008-08-27 上海理工大学 符合人体工学设计的呼吸面罩及其设计方法
CN105842875A (zh) * 2016-06-07 2016-08-10 杭州美戴科技有限公司 一种基于人脸三维测量的眼镜架设计方法
WO2018087386A1 (fr) * 2016-11-14 2018-05-17 Themagic5 Lunettes personnalisées par l'utilisateur
CN208569223U (zh) * 2015-04-30 2019-03-01 奥克利有限公司 三维取向的校正眼镜
CN109558665A (zh) * 2018-11-22 2019-04-02 杭州美戴科技有限公司 一种个性化柔性鼻托的自动设计方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101249293A (zh) * 2008-04-10 2008-08-27 上海理工大学 符合人体工学设计的呼吸面罩及其设计方法
CN208569223U (zh) * 2015-04-30 2019-03-01 奥克利有限公司 三维取向的校正眼镜
CN105842875A (zh) * 2016-06-07 2016-08-10 杭州美戴科技有限公司 一种基于人脸三维测量的眼镜架设计方法
WO2018087386A1 (fr) * 2016-11-14 2018-05-17 Themagic5 Lunettes personnalisées par l'utilisateur
CN109558665A (zh) * 2018-11-22 2019-04-02 杭州美戴科技有限公司 一种个性化柔性鼻托的自动设计方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117077479A (zh) * 2023-08-17 2023-11-17 北京斑头雁智能科技有限公司 人体工学眼镜设计及制备方法和人体工学眼镜
CN117077479B (zh) * 2023-08-17 2024-02-13 北京斑头雁智能科技有限公司 人体工学眼镜设计及制备方法和人体工学眼镜

Similar Documents

Publication Publication Date Title
US11042046B2 (en) Wearable devices such as eyewear customized to individual wearer parameters
JP6542744B2 (ja) カスタム製品を創作するための方法及びシステム
CN106920274B (zh) 移动端2d关键点快速转换为3d融合变形的人脸建模方法
CN105708467B (zh) 人体实际距离测量及眼镜架的定制方法
ES2841827T3 (es) Procedimiento, dispositivo y programa informático para la adaptación virtual de una montura de gafas
CN109460635B (zh) 用于生成镜架的方法和系统
US9568748B2 (en) Methods of designing and fabricating custom-fit eyeglasses using a 3D printer
US20220373820A1 (en) Method and apparatus for design and fabrication of customized eyewear
CN107085864B (zh) 基于特征点的眼镜建模装置及方法、眼镜制作方法及眼镜
CN105874378A (zh) 用于确定定制光学设备的几何定义的方法
CN112017278B (zh) 一种基于Grasshopper的泳镜造型定制设计方法
CN111467131B (zh) 一种3d打印定制护目镜框的自动设计方法
WO2021217547A1 (fr) Procédé de conception automatique d'une monture de lunettes personnalisée par impression tridimensionnelle (3d)
WO2014164347A1 (fr) Procédé et appareil pour concevoir et fabriquer des lunettes personnalisées
WO2024037082A1 (fr) Procédé de modélisation de lunettes et lunettes
CN106066538A (zh) 用于虚拟现实vr头盔的轻薄菲涅尔透镜
CN116482874A (zh) 基于人脸面部多点位测量数据的眼镜镜架设计方法
CN113223154A (zh) 一种个性化眼镜框三维模型生成方法及一种个性化眼镜框制作方法
CN114782618A (zh) 3d打印防护面罩参数化设计方法
CN114547714A (zh) 一种基于人脸照片合成模型个性化定制的3d打印护目镜的制作方法
CN110503714B (zh) 一种个性化镜腿的自动设计方法
US12038625B2 (en) Method for producing at least one nose pad for view detection glasses
CN116449582A (zh) 眼镜定制方法、眼镜定制系统及定制的眼镜
WO2019204728A1 (fr) Système et procédé d'obtention de mesures ophtalmiques de verres progressifs tenant compte avec précision de la taille et de la posture du corps
TWI541012B (zh) 用於眼鏡調校的裝置及眼鏡調校的方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20933763

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20933763

Country of ref document: EP

Kind code of ref document: A1