CN107816953A - Three-dimensional scanner, threedimensional model generation method and application process - Google Patents

Abstract

The present invention provides a three-dimensional scanning device, a method for generating a three-dimensional model and an application method, wherein the three-dimensional scanning device includes: a fixed structure, at least six first imaging units arranged on the fixed structure, at least six first imaging units arranged on the fixed structure the second photography unit on the fixed structure, at least three third photography units on the fixed structure, at least six fourth photography units on the fixed structure, at least three fourth photography units on the fixed structure The fifth camera unit and control module, the three-dimensional scanning device provided by the present invention, provides a new camera layout, and the layout of each camera is uneven, and can make high-quality models with fewer cameras and lower prices, and can It is adjusted according to the needs and characteristics of users, which is convenient for popularization and use.

Description

Three-dimensional scanning device, three-dimensional model generation method and application method

technical field

The invention relates to the field of three-dimensional scanning, in particular to a three-dimensional scanning device, a three-dimensional model generation method and an application method.

Background technique

Today, the essence and goal of three-dimensional measurement on the surface of an object is to obtain the depth information of each point on the surface. According to the different implementation methods, it can be simply divided into two categories: contact three-dimensional measurement technology and non-contact three-dimensional measurement technology.

At present, the accuracy of contact 3D scanning can reach the micron level. The whole system has high stability and good repetition rate. However, contact 3D scanning has the following disadvantages: loss to the surface of soft objects, long measurement time, and 3D measurement of probe radius. Compensation, and the equipment is inconvenient to move and expensive;

Non-contact 3D scanning does not need to be in contact with the surface of the measured object. Compared with contact 3D scanning: the surface of the measured object is protected from damage, the measurement speed is fast and the efficiency is high, the working distance is flexible and variable, and it is less affected by the environment. Small. Among them, one method of non-contact three-dimensional scanning is a non-contact active scanning method that widely uses laser light, white light, infrared rays, etc., and a non-contact passive scanning method that uses a three-dimensional image or multiple pictures.

Most of the existing image scanning methods use 50 to 130 high-priced Digital Single Lens Reflex cameras (Digital Single Lens Reflex), which require a wider space with a diameter of more than 3m. Compared with the concept of a 3D photo studio, it tends to be more 3D Concept of photo studio (3D photo studio). Moreover, such a large number of high-priced digital single-lens reflex cameras are very expensive, and are not suitable for general small and medium-sized enterprises or personal use. Therefore, it is necessary to design a 3D scanning device, a 3D model generation method and an application method that are cheap and suitable for widespread use.

Contents of the invention

In order to overcome the deficiencies of the prior art, the present invention provides a 3D scanning device, a 3D model generation method and an application method, which can produce high-quality models with fewer cameras and lower prices, and can And features to adjust, and easy to promote the use of.

To achieve the above object, the technical scheme of the present invention is as follows:

In the first aspect, the three-dimensional scanning device provided by the present invention includes a fixed structure, at least six first imaging units arranged on the fixed structure, at least six second imaging units arranged on the fixed structure, at least three a third photographing unit arranged on the fixed structure, at least six fourth photographing units arranged on the fixed structure, at least three fifth photographing units arranged on the fixed structure and a control module;

Wherein, the normals of all the first photographing units passing through the center of their lenses are in the same plane, and this plane is recorded as the first plane; the normals of any two adjacent first photographing units passing through their lenses The angle between the lines is not greater than 30 degrees; the center point of the subject is located on the first plane; the second photography unit is arranged above the first photography unit, and all the second photography units pass through the lens center The normal lines of the points are all in the same plane, and this plane is recorded as the second plane, and the angle between the second plane and the first plane is 10-20 degrees; The included angle of the normal line passing through its lens is not more than 30 degrees; all the third photographing units are arranged above the second photographing unit, and the normal lines passing through the center point of the lens of all the third photographing units are at the same In the plane, record this plane as the third plane, and the angle between the third plane and the second plane is 10-20 degrees; all the fourth photographing units are arranged below the first photographing unit, and all the The normal line passing through the center point of the lens of the fourth photographing unit is all in the same plane, and this plane is recorded as the fourth plane, and the angle between the fourth plane and the first plane is -20 degrees to -10 degrees; The included angle between the normal lines passing through the lens of any two adjacent fourth photographing units is not greater than 30 degrees; all the fifth photographing units are arranged below the fourth photographing unit, and all the fifth photographing units The normal lines passing through the center point of the lens are all in the same plane, and this plane is recorded as the fifth plane, and the included angle between the fifth plane and the fourth plane is -20 degrees to -10 degrees.

In one embodiment of the present invention, the angle between the normal of any two adjacent third photographing units passing through their lenses is 30-60 degrees, and any two adjacent fifth photographing units passing through their lenses The included angle of the normal line is 30-60 degrees.

In an embodiment of the present invention, the fixing structure includes at least seven fixing posts, and the fixing posts respectively include a first fixing post, a second fixing post, a third fixing post, a fourth fixing post, a Five fixed pillars, sixth fixed pillars, and seventh fixed pillars; all the first photographing units are respectively arranged on the first fixed pillar, the second fixed pillar, the third fixed on the pillar, the sixth fixed pillar, and the seventh fixed pillar, all the second photographing units are respectively arranged on the first fixed pillar, the second fixed pillar, the third fixed pillar, the On the fifth fixed pillar, the sixth fixed pillar, and the seventh fixed pillar, the three third photographing units are respectively arranged on the third fixed pillar, the fourth fixed pillar, and the fifth fixed pillar. On the pillars, all the fourth photographing units are respectively arranged on the first fixed pillar, the second fixed pillar, the third fixed pillar, the fifth fixed pillar, the sixth fixed pillar, the On the seventh fixed pillar, the three fifth photographing units are respectively arranged on the third fixed pillar, the fourth fixed pillar, and the fifth fixed pillar.

In an embodiment of the present invention, an eighth fixing strut is provided on a side of the first fixing strut away from the second fixing strut, and a ninth fixing strut is disposed on a side of the seventh fixing strut away from the sixth fixing strut. The eighth fixed pillar is provided with at least two sixth photographing units for photographing one side of the subject's ear, and the ninth fixed pillar is provided with at least two photographing units for photographing the other ear of the subject. The seventh camera unit on one side of the ear.

In an embodiment of the present invention, at least one of the first planes is respectively arranged in the space between the first plane and the second plane and in the space between the first plane and the fourth plane. Six photographing units; at least one seventh photographing unit is respectively arranged in the space between the first plane and the second plane and in the space between the first plane and the fourth plane.

In an embodiment of the present invention, the included angle between any two adjacent sixth photographing units passing through the normal of their lenses is 20-40 degrees; any two adjacent seventh photographing units passing through The angle between the normal of the lens is 20-40 degrees.

In an embodiment of the present invention, the control module is used to acquire the first photographing unit, the second photographing unit, the third photographing unit, the fourth photographing unit, the fifth photographing unit, The pictures sent by the sixth photography unit and the seventh photography unit;

The control module is also used to generate a three-dimensional model according to the acquired pictures.

In an embodiment of the present invention, the three-dimensional scanning device further includes an illumination unit, and at least one illumination unit is arranged above the fixed structure.

In a second aspect, the present invention also provides a method for generating a three-dimensional model, including:

Obtain a photo of the subject and a serial number matching the photo;

grouping the acquired photos according to the numbers;

Acquiring the number of preset photos matching each of the groups;

When the number of photos in each group is not less than the preset number of photos;

Perform calculations on the acquired photos, and generate a three-dimensional model of the subject according to the calculation results;

The three-dimensional model is baked.

In an embodiment of the present invention, the baking is to color the acquired 3D model, so that the 3D model has color and texture.

In an embodiment of the present invention, the 3D model generation method further includes:

When the number of photos in any group is less than the preset number of photos, the photos of the subject and the numbers matching the photos are reacquired.

In an embodiment of the present invention, after the acquisition of the photo of the subject and the number matched with the photo, it further includes:

Acquiring the facial feature points of the subject according to the obtained photos;

Generate a face label based on the acquired facial feature points;

Then, after the said three-dimensional model is baked, it also includes:

Obtaining a preset model matching the face tag from a preset database;

The three-dimensional model is corrected according to the preset model.

In an embodiment of the present invention, the acquisition of the subject's facial feature points based on the acquired photos may be based on a single or multiple photos.

In the third aspect, the present invention also provides a method for applying a three-dimensional model, including:

Obtain the user's 3D model;

Obtain the preset hairstyle database, and send the hairstyle information in the preset hairstyle database to the user;

Obtain the hairstyle information selected by the user and record it as the preview hairstyle;

Generate a hair styling effect according to the user's three-dimensional model and the preview hairstyle, and send the hair styling effect to the user.

Compared with prior art, the beneficial effect of the present invention is:

The existing method uses multiple cameras and the cameras are evenly placed, which is expensive, occupies a large area, is inconvenient to use, and is not conducive to popularization. The three-dimensional scanning device provided by the present invention provides a new type of camera and a new type of camera structure. The uneven density of the layout can make high-quality models with fewer cameras and lower prices, and can be adjusted according to the needs and characteristics of users, and it is easy to promote and use.

Description of drawings

Fig. 1 is a structural front view of a three-dimensional scanning device in an embodiment of the present invention;

Fig. 2 is a schematic flow chart of a three-dimensional model generation method in an embodiment of the present invention;

Among them: the fixed structure 100, the first photographing unit 200, the second photographing unit 300, the third photographing unit 400, the fourth photographing unit 500, the fifth photographing unit 600, the first fixed support 110, the second fixed support 120, the third The fixed support 130 , the fourth fixed support 140 , the fifth fixed support 150 , the sixth fixed support 160 , and the seventh fixed support 170 .

Detailed ways

The present invention will be described in detail below through specific embodiments.

According to the technical contents disclosed in the present invention, other embodiments of the present invention will be apparent to those skilled in the art, and the following embodiments are only examples. Various changes and improvements can be made to the present invention without departing from the spirit and scope of the present invention. These changes and improvements should all fall within the protection scope of the present invention.

In the first aspect, as shown in FIG. 1 , the three-dimensional scanning device provided by the present invention includes a fixed structure 100 , at least six first imaging units 200 arranged on the fixed structure 100 , at least six first imaging units 200 arranged on the fixed structure 100 Two camera units 300, at least three third camera units 400 arranged on the fixed structure 100, at least six fourth camera units 500 arranged on the fixed structure 100, at least three fifth camera units arranged on the fixed structure 100 Unit 600 and a control module (not shown);

Wherein, the normals of all the first photographing units 200 passing through the central points of their lenses are in the same plane, and this plane is recorded as the first plane; the normals of any two adjacent first photographing units 200 passing through their lenses The included angle is not more than 30 degrees; the center point of the object is located on the first plane; the second camera unit 300 is arranged above the first camera unit 200, and all the second camera units 300 pass through the center point of their lenses. The lines are all in the same plane, and this plane is recorded as the second plane, and the angle between the second plane and the first plane is 10-20 degrees; The included angle of the normal line is not more than 30 degrees; all the third photographing units 400 are arranged above the second photographing unit 300, and the normals of all the third photographing units 400 passing through the center point of their lenses are in the same plane, and the The plane is the third plane, and the angle between the third plane and the second plane is 10-20 degrees; all the fourth photographing units 500 are arranged below the first photographing unit 200, and all the fourth photographing units 500 pass through The normals of the center point of the lens are all in the same plane, and this plane is recorded as the fourth plane, and the angle between the fourth plane and the first plane is -20 degrees to -10 degrees; any two adjacent first planes The included angle of the normal line passing through the lens of the four photographing units 500 is not more than 30 degrees; all the fifth photographing units 600 are arranged below the fourth photographing unit 500, and all the fifth photographing units 600 pass through the normal of the lens center point. The lines are all in the same plane, and this plane is recorded as the fifth plane, and the angle between the fifth plane and the fourth plane is -20 degrees to -10 degrees.

In an embodiment of the present invention, the angle between the normals of any two adjacent third photographing units 400 passing through their lenses is 30-60 degrees, and the normal of any two adjacent fifth photographing units 600 passing through their lenses The angle between the lines is 30-60 degrees.

In an embodiment of the present invention, the fixing structure 100 includes at least seven fixing posts, and the fixing posts respectively include a first fixing post 110, a second fixing post 120, a third fixing post 130, and a fourth fixing post from left to right. 140, the fifth fixed pillar 150, the sixth fixed pillar 160, and the seventh fixed pillar 170; On the pillar 150, the sixth fixed pillar 160, and the seventh fixed pillar 170, all the second photographing units 300 are respectively arranged on the first fixed pillar 110, the second fixed pillar 120, the third fixed pillar 130, the fifth fixed pillar 150, the On the six fixed pillars 160 and the seventh fixed pillar 170, three third photographic units 400 are respectively arranged on the third fixed pillar 130, the fourth fixed pillar 140, and the fifth fixed pillar 150, and all the fourth photographic units 500 are respectively arranged on On the first fixed pillar 110, the second fixed pillar 120, the third fixed pillar 130, the fifth fixed pillar 150, the sixth fixed pillar 160, and the seventh fixed pillar 170, three fifth photographing units 600 are respectively arranged on the third fixed pillar. on the pillar 130 , the fourth fixed pillar 140 , and the fifth fixed pillar 150 .

In an embodiment of the present invention, an eighth fixing strut is provided on a side of the first fixing strut 110 away from the second fixing strut 120 , and a ninth fixing strut is provided on a side of the seventh fixing strut 170 away from the sixth fixing strut 160 . The eighth fixed pillar is provided with at least two sixth photographing units for photographing one side of the subject's ear, and the ninth fixed pillar is provided with at least two sixth photographing units for photographing the other side of the subject The seventh photographic unit of the ear.

In an embodiment of the present invention, at least one sixth camera is respectively arranged in the space between the first plane and the second plane and in the space between the first plane and the fourth plane. Units; at least one seventh photographing unit is respectively arranged in the space between the first plane and the second plane and in the space between the first plane and the fourth plane.

In an embodiment of the present invention, the included angle between any two adjacent sixth photographing units passing through the normal of their lenses is 20-40 degrees; any two adjacent seventh photographing units passing through The angle between the normal of the lens is 20-40 degrees.

In an embodiment of the present invention, the control module is used to obtain the first photographing unit 200, the second photographing unit 300, the third photographing unit 400, the fourth photographing unit 500, the fifth photographing unit 600, the The pictures sent by the sixth photography unit and the seventh photography unit;

The control module is also used to generate a three-dimensional model according to the acquired pictures.

In an embodiment of the present invention, the three-dimensional scanning device further includes an illumination unit, and at least one illumination unit is disposed above the fixing structure 100 .

In a second aspect, the present invention also provides a method for generating a three-dimensional model, including:

S100: Obtain a photo of the subject and a number matching the photo;

S200: Group the acquired photos according to the numbers;

S300: Acquiring the number of preset photos matching each of the groups;

S400: When the number of photos in each group is not less than the preset number of photos;

S500: Perform calculation on the acquired photo, and generate a three-dimensional model of the subject according to the calculation result;

S600: Baking the three-dimensional model.

Specifically, the baking is to color the acquired 3D model, so that the 3D model has color and texture.

In an application scenario of the present invention, the three-dimensional scanning device provided by the first aspect of the present invention imports the scanned photos of human faces into the control computer sequentially according to the camera numbers, and the control computer groups the photos according to the camera numbers, such as forehead photos , eyebrow photos, eye photos, nose photos, mouth photos, cheek photos, ear photos, etc., when it is judged that the number of photos in each group is not less than the number of photos preset for each group, the control computer performs calculations on the obtained photos of each group , and generate a 3D model of the face according to the calculation results, control the computer and use software to bake and color the 3D model, so that the 3D model has color and texture.

In an embodiment of the present invention, the 3D model generation method further includes:

When the number of photos in any group is less than the preset number of photos, the photos of the subject and the numbers matching the photos are reacquired.

In another application scenario of the present invention, the three-dimensional scanning device provided by the first aspect of the present invention imports the scanned photos of human faces into the control computer sequentially according to the camera numbers, and the control computer groups the photos according to the camera numbers, such as forehead Photos, eyebrow photos, eye photos, nose photos, mouth photos, cheek photos, ear photos, etc., the control computer judges that the number of photos in the eye group is 6, which is less than the preset number of 8 photos in the eye group, and the photos in other groups are not smaller than the preset number. number of photos, control the computer to re-acquire all scanned face photos and numbers that match said photos, and group photos by camera number, such as forehead photos, eyebrow photos, eye photos, nose photos, mouth photos, cheek photos Photos, ear photos, etc. When it is judged that the number of photos in each group is not less than the preset number of photos in each group, the control computer solves each group of photos obtained, and generates a three-dimensional model of the face according to the result of the calculation, and controls the computer. Then use the software to bake and color the 3D model, so that the 3D model has color and texture.

In an embodiment of the present invention, after step S100, it also includes:

Acquiring the facial feature points of the subject according to the obtained photos;

Generate a face label based on the acquired facial feature points;

Then, after step S600, it also includes:

Obtaining a preset model matching the face tag from a preset database;

The three-dimensional model is corrected according to the preset model.

In an embodiment of the present invention, the acquisition of the subject's facial feature points based on the acquired photos may be based on a single or multiple photos.

In yet another application scenario of the present invention, the three-dimensional scanning device provided in the first aspect of the present invention imports the scanned photos of human faces into the control computer in sequence according to the camera numbers, and the control computer acquires photos of the cheeks and chin of the photographed human face , according to the photos of the cheeks and chin, it is judged that the face is an oval face, and the generated face label is No. 1 face shape, and the control computer groups the photos according to the camera number, such as forehead photos, eyebrow photos, eye photos, nose photos, mouth photos, etc. Photos, cheek photos, ear photos, etc., when it is judged that the number of photos in each group is not less than the preset number of photos in each group, the control computer performs calculations on each group of photos obtained, and generates a three-dimensional face according to the results of the calculation. Model, the control computer uses software to bake and color the 3D model, so that the 3D model has color and texture. After baking, the control computer obtains the preset model of No. 1 face shape from the preset database, and corrects it according to the preset model The generated 3D model makes the shape of the face into a complete and flawless model.

In the third aspect, the present invention also provides a method for applying a three-dimensional model, including:

Obtain the user's 3D model;

Obtain the preset hairstyle database, and send the hairstyle information in the preset hairstyle database to the user;

Obtain the hairstyle information selected by the user and record it as the preview hairstyle;

Generate a hair styling effect according to the user's three-dimensional model and the preview hairstyle, and send the hair styling effect to the user.

In an application scenario of the present invention, the background server obtains the three-dimensional model of the user's face, the background server obtains the preset hairstyle database, and sends the hairstyle design in the preset hairstyle database to the user, and the background server obtains the hairstyle selected by the user as perm Big curls and dyed light wine red, the background server generates the hair design effect of the user's three-dimensional model after perming the big curls and dyed light wine red, and sends the hair design effect to the user.

Inspired by the above ideal embodiment according to the present invention, through the above description, those skilled in the art can make various changes and modifications without departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the contents in the description, and must be determined according to the scope of the claims.

Claims (10)

1. three-dimensional scanner, it is characterised in that the first photography being arranged on including fixed structure, at least six on fixed structure The second camera unit that unit, at least six are arranged on the fixed structure, at least three are arranged on the fixed structure The 3rd camera unit, at least six the 4th camera units being arranged on the fixed structure, at least three be arranged on it is described The 5th camera unit and control module on fixed structure；

Wherein, the normal of all first camera units through its optical center point is in same plane, remembers the plane For the first plane；The angle of the normal through its camera lens of adjacent first camera unit of any two is not more than 30 degree；Quilt The central point for taking the photograph body is located in first plane；Second camera unit is arranged at the top of the first camera unit, owns Second camera unit is in same plane through the normal of its optical center point, remembers that the plane is the second plane, institute The angle for stating the second plane and first plane is 10-20 degree；Adjacent second camera unit passes through it described in any two The angle of the normal of camera lens is not more than 30 degree；All 3rd camera units are arranged at the top of the second camera unit, own 3rd camera unit is in same plane through the normal of its optical center point, remembers that the plane is the 3rd plane, institute The angle for stating the 3rd plane and second plane is 10-20 degree；All 4th camera units are arranged at the first photography list The lower section of member, the normal of all 4th camera units through its optical center point are in same plane, remember the plane For fourth plane, the angle of the fourth plane and first plane is -20 degree to -10 degree；Any two adjacent described The angle of the normal through its camera lens of four camera units is not more than 30 degree；All 5th camera units are arranged at the 4th and taken the photograph The lower section of shadow unit, the normal of all 5th camera units through its optical center point are in same plane, and note should Plane is the 5th plane, and the angle of the 5th plane and the fourth plane is -20 degree to -10 degree.

2. three-dimensional scanner as claimed in claim 1, it is characterised in that adjacent 3rd camera unit of any two is worn The angle for crossing the normal of its camera lens is 30-60 degree, and adjacent 5th camera unit of any two passes through the normal of its camera lens Angle is 30-60 degree.

3. three-dimensional scanner as claimed in claim 1, it is characterised in that between first plane and second plane Space in and the space between first plane and the fourth plane in be respectively respectively arranged with least one described Six camera units；In space between first plane and second plane and first plane and described Siping City At least one 7th camera unit is respectively respectively arranged with space between face.

4. three-dimensional scanner as claimed in claim 1, it is characterised in that adjacent the 6th camera unit of any two Angle through the normal of its camera lens is 20-40 degree；Adjacent the 7th camera unit of any two passes through the method for its camera lens The angle of line is 20-40 degree.

5. three-dimensional scanner as claimed in claim 1, it is characterised in that the fixed structure includes at least seven and fixes branch Post, the fixed pillar are from left to right consolidated including the first fixation pillar, the second fixation pillar, the 3rd fixation pillar, the 4th respectively Determine pillar, the 5th fixation pillar, the 6th fixation pillar, the 7th fixation pillar；All first camera units are separately positioned on Described first fixes pillar, the second fixation pillar, the 3rd fixation pillar, the 5th fixation pillar, the described 6th Fixed pillar, the described 7th are fixed on pillar, and all second camera units are separately positioned on described first and fix pillar, institute The second fixation pillar is stated, the described 3rd pillar is fixed, the described 5th fixes pillar, the described 6th fixes pillar, the described 7th solid Determine on pillar, three the 3rd camera units are separately positioned on the described 3rd and fix pillar, the described 4th fix pillar, described 5th fixes on pillar, and all 4th camera units are separately positioned on described first and fix pillar, the second fixation branch Post, the 3rd fixation pillar, the 5th fixation pillar, the 6th fixation pillar, the described 7th are fixed on pillar, three 5th camera unit is separately positioned on the described 3rd and fixes pillar, the 4th fixation pillar, the 5th fixation pillar On.

6. three-dimensional scanner as claimed in claim 5, it is characterised in that described first fixes pillar consolidates away from described second The side for determining pillar is provided with the 8th fixation pillar, and the 7th the remote described 6th side for fixing pillar for fixing pillar is provided with the 9th Fixed pillar, it is single for shooting the 6th photography of subject side ear that the 8th fixation pillar is provided with least two Member, the 9th fixation pillar are provided with least two the 7th camera units for being used for shooting subject opposite side ear.

7. threedimensional model generation method, it is characterised in that including：

The numbering for obtaining the photo of subject and being matched with the photo；

According to the numbering, acquired photo is grouped；

Obtain the default number of pictures with each group match；

When the number of pictures in each packet is not less than the default number of pictures；

Acquired photo is resolved, and the threedimensional model of the subject is generated according to calculation result；

The threedimensional model is bakeed.

8. threedimensional model generation method as claimed in claim 7, it is characterised in that the threedimensional model generation method is also wrapped Include：

When number of pictures in any one packet is less than default number of pictures constantly, reacquire subject photo and with institute State the numbering of photo matching.

9. threedimensional model generation method as claimed in claim 7, it is characterised in that it is described obtain subject photo and with institute After the numbering for stating photo matching, in addition to：

According to acquired photo, the face feature point of subject is obtained；

Shape of face label is generated according to acquired face feature point；

Then, it is described the threedimensional model is bakeed after, in addition to：

The preset model with the shape of face tag match is obtained from presetting database；

According to threedimensional model described in the preset model amendment.

10. threedimensional model application process, it is characterised in that including：

Obtain the threedimensional model of user；

Default hair style database is obtained, hair style information in default hair style database is sent to user；

The hair style information of user's selection is obtained, is designated as preview hair style；

According to the threedimensional model of user and the preview hair style, hair style design effect is generated, and the hair style design effect is sent out Give user.