KR101779265B1

KR101779265B1 - Manufacturing 3-dimensional face using 3d printing with 2d pictures

Info

Publication number: KR101779265B1
Application number: KR1020150185070A
Authority: KR
Inventors: 김동익
Original assignee: 군산대학교산학협력단
Priority date: 2015-12-23
Filing date: 2015-12-23
Publication date: 2017-09-26
Also published as: KR20170075426A

Abstract

The present invention comprises a first step of acquiring information from a person in a 2D photograph; A second step of generating three-dimensional data using the information obtained in the first step; A third step of fabricating a 3D printing prototype using 3D printing using the 3D data as a three-dimensional shape of a face; A fourth step of fabricating a flask with a 3D printing prototype 100; And a fifth step of pouring the casting mold into the flask and solidifying the final product 300. The present invention provides a method of manufacturing a three-dimensional facial shape using a 3D printing technique.
Since the present invention can realize a three-dimensional shape of a human face from a 2D photograph, it is possible to realize a three-dimensional shape of a past historical person existing only in a photograph or to implement a past face shape in a three- There is a possible effect.

Description

TECHNICAL FIELD [0001] The present invention relates to a method of producing a three-dimensional facial shape using a 3D printing technique in a 2D photograph,

The present invention obtains three-dimensional data of a human face from a 2D photograph, and then prints the three-dimensional shape of a human face by using a 3D printing technique, and forms a flask such as a gypsum pattern in a circular shape, And a method of producing a three-dimensional shape of a human face through a casting operation.

Generally, a 3D face model can be obtained by scanning an object's static external information using an active sensor such as a laser or a pattern light, and a method of scanning a static image, such as a depth, a stereo image, A method of generating by using a sensor or the like, and a method of generating by hand by a skilled expert. For example, U.S. Patent Publication No. 2011-0148868 entitled " Apparatus and method for generating 3D avatar face using stereo vision and face detector "describes a process of generating a face of a 3D avatar using a stereo vision system and a face detector have.

In Korean Patent Laid-Open Publication No. 2012-0102275 entitled " Virtual hair application service system and method and terminal supporting the same, " 3D rendering of the user's head (face and head) is performed to generate a 3D model, Describes a technique for applying a specific hair object.

As described above, among the methods of generating the conventional 3D face model, the post-processing method by the expert is required for the scanning method, and the conventional sensor-based method has a disadvantage in that good results can be obtained only under preset conditions. In addition, there are drawbacks such as synchronization problem between cameras, color consistency problem, and geometric correction problem due to the use of a plurality of cameras.

In addition, in the conventional method, it is necessary to precede the photographing of the three-dimensional shape. That is, a historical portrait photograph in which an image exists only as a 2D photograph, or a three-dimensional representation of a childhood shape existing in a photograph of the past, There was an impossible problem.

The object of the present invention is to produce a three-dimensional shape of a human face from 2D photographs, and to utilize the 3D printing technology which is emerging recently.

The present invention comprises a first step of acquiring information from a person in a 2D photograph; A second step of generating three-dimensional data using the information obtained in the first step; A third step of fabricating a 3D printing prototype using 3D printing using the 3D data as a three-dimensional shape of a face; A fourth step of fabricating a flask with a 3D printing prototype 100; And a fifth step of pouring the casting mold into the flask and solidifying the final product 300. The present invention provides a method of manufacturing a three-dimensional facial shape using a 3D printing technique.

And a second step of verifying whether the 3D data generated in the second step is information capable of 3D printing,

The three-dimensional data generated in the second step can be obtained by processing the light and dark change information along the eyes, nose, and mouth of the face in the 2D photograph.

Since the present invention can realize a three-dimensional shape of a human face from a 2D photograph, it is possible to realize a three-dimensional shape of a past historical person existing only in a photograph, or to embody a past face shape in a three- There is a possible effect.

FIG. 1 schematically shows a 3D printing process of a three-dimensional shape of a human face in a two-dimensional photograph according to an embodiment of the present invention.
FIG. 2 schematically shows a process of casting a three-dimensional shape of a human face in a three-dimensional shape of a 3D printed human face according to an embodiment of the present invention.
FIG. 3 is a diagram illustrating a state in which a final product is manufactured using a flask.

The present invention will now be described in detail with reference to the accompanying drawings. Hereinafter, a repeated description, a known function that may obscure the gist of the present invention, and a detailed description of the configuration will be omitted. Embodiments of the present invention are provided to more fully describe the present invention to those skilled in the art. Accordingly, the shapes and sizes of the elements in the drawings and the like can be exaggerated for clarity.

Hereinafter, a method according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 schematically shows a 3D printing process of a three-dimensional shape of a human face in a two-dimensional photograph according to an embodiment of the present invention.

Referring to FIG. 1, an information obtaining unit 10 for obtaining information on the brightness or darkness of the front face of a face or information on chroma from 2D photographs, information for generating three-dimensional data using information obtained by the information obtaining unit, And a data verifying unit 30 for verifying whether 3D data output from the processing unit 20 and the information processing unit 20 is information capable of 3D printing. The information obtaining unit 10 obtains the lightness change information and the chroma change information of the human face in relation to the eyes, nose, and mouth in the 2D photograph, and uses the information to obtain three-dimensional data .

The information processing unit 20 extracts information such as three-dimensional height and the like based on the statistical feature information on the various types of face, and restores the 3D shape data of the face based on the extracted feature points.

In the process of extracting three-dimensional data that can be 3D-printed using 2D image data, the process of extracting three-dimensional data is performed by using the above-mentioned brightness, brightness, and saturation, and obtaining a three-dimensional height value There is a way to pay. That is, for example, even if the lightness value is increased, the relative depth or height value is increased.

There are various methods for obtaining three-dimensional data (depth to height) by using other two-dimensional data, and it is obvious that the present invention can be applied to the present invention by utilizing these known methods.

The data verifying unit 30 verifies whether the data generated by the information processing unit 20 is suitable for actual 3D printing, and corrects and edits the data based on the verified result to output 3D data suitable for 3D printing. The data verification part can modify and edit the 3D data in consideration of the printing suitability (internal and external thickness, joint condition, etc.) required by the 3D printer, stability and stability, and is suitable for 3D printing of the corrected and edited 3D data And outputs final 3D data.

Then, the 3D shape of the face is printed using 3D printing using the final 3D data. The data is printed in a stacking manner from below to above through the nozzles of the computer and the 3D printer to print the three-dimensional shape of the face. Equipment and technology used for 3D printing use commonly used equipments and technologies, so a detailed description thereof will be omitted.

The three-dimensional shape of the face output to the 3D printer is hereinafter referred to as a 3D printing circular shape (100) for convenience.

FIG. 2 schematically shows a process of casting a three-dimensional shape of a human face in a three-dimensional shape (100, 3D printing circle) of a 3D printed human face according to an embodiment of the present invention. FIG. 3 is a diagram illustrating a state in which a final product is manufactured using a flask.

First, a flask making step 60 for fabricating a flask using the 3D printing prototype 100 is performed. The step of fabricating the flask is a step of fabricating the flask 200 by pouring gypsum or the like onto the three-dimensional shape of the 3D printing circular mold 100 to be hardened. That is, when the gypsum is poured into a 3D printing circular mold to form a flask 200, and then the 3D printing circular is removed, a three-dimensional shape corresponding to the face shape is formed in the inner space of the flask 200.

Thereafter, the casting step 70 is performed. In the casting step 70, the casting is poured into the indented internal space of the flask 200 to be hardened to complete the final product 300. The final product will have the same shape as the 3D printing circle. That is, the final product is that the face of the person in the 2D photograph is formed in three dimensions.

The flask may be made of gypsum, but any material used in other flasks may be utilized. In addition, the molten mold is poured into the flask to produce the final product 300, which may be made of a desired material. In addition, the process from the manufacture of the flask 200 to the final product 300 can be mass-produced using an automated process system.

According to the present invention, a face shape of a person in a two-dimensional photograph can be produced as a three-dimensional model, so that it can be utilized in various aspects.

As described above, an optimal embodiment has been disclosed in the drawings and specification. Although specific terms have been employed herein, they are used for purposes of illustration only and are not intended to limit the scope of the invention as defined in the claims or the claims. Therefore, those skilled in the art will appreciate that various modifications and equivalent embodiments are possible without departing from the scope of the present invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

Claims

A first step of obtaining information on the contrast of the front face of the person in the 2D photograph through the information obtaining unit;
Extracting the three-dimensional height information based on the statistical feature information of the eye, nose, and mouth portions of the face front portion in the 2D photograph using the information obtained in the first step, using the information processing unit, A second step of generating three-dimensional data of a face based on the minutiae;
A second step of verifying whether the 3D data generated in the second step is 3D printable information through a data verification unit;
A third step of fabricating a 3D printing circle by stacking the three-dimensional shape of the face using the 3D data from below to above using 3D printing;
A fourth step of fabricating a flask with a 3D printing circle; And
And a fifth step of pouring the casting mold into the flask to complete the final product,
Wherein the data verifying unit comprises:
The 3D printing apparatus according to claim 1, wherein the 3D printing unit is configured to output the 3D data suitable for 3D printing by modifying and editing the data generated by the information processing unit based on the verification result and checking the conformity, The 3D data is corrected and edited to output the final 3D data,
The 3D printing prototype may include:
And forming the three-dimensional facial shape by using the 3D printing technique.

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