WO2010024486A1 - 3d hair style simulation system and method using augmented reality - Google Patents

3d hair style simulation system and method using augmented reality Download PDF

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Publication number
WO2010024486A1
WO2010024486A1 PCT/KR2008/005109 KR2008005109W WO2010024486A1 WO 2010024486 A1 WO2010024486 A1 WO 2010024486A1 KR 2008005109 W KR2008005109 W KR 2008005109W WO 2010024486 A1 WO2010024486 A1 WO 2010024486A1
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Prior art keywords
image
marker
user
unit
hair style
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Application number
PCT/KR2008/005109
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French (fr)
Inventor
Sang Guk Kim
Jeong Bong Son
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Sang Guk Kim
Jeong Bong Son
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.)
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Publication date
Application filed by Sang Guk Kim, Jeong Bong Son filed Critical Sang Guk Kim
Publication of WO2010024486A1 publication Critical patent/WO2010024486A1/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T19/00—Manipulating 3D models or images for computer graphics
    • G06T19/006—Mixed reality
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
    • G06Q50/10—Services
    • 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 present invention relates to a 3D hair style simulation system and method using augmented reality.
  • the present invention relates to a 3D hair style simulation system and method using augmented reality that a user
  • K synthesizes a virtual hair in a real time image environment, embodies the virtual hair using augmented reality, which is a computer technique, to make the virtual hair look like an object existing in the real environment, and applies various hair styles to an user' s face in real time to fine a desired ⁇ ⁇ hair style.
  • augmented reality which is a computer technique
  • a basic face frame of 3D is manufactured to model a face model of a user, and by overlapping a 2D face image captured by a digital camera to a face frame of 3D, a hair style model is applied to a 3D face model displayed in Web.
  • the purpose of the present invention provides a method of a 3D hair style simulation using augmented reality that a virtual object is matched to a user's image in the real environment obtained by a camera, the virtual object projected by the marker in accordance with the user' s movement moves along with the user' s movement such that various styles are represented by 3D in advance.
  • the purpose of the present invention provides a method of a
  • K) simulation using augmented reality comprises an image acquirement process obtaining an image of a user and a marker using an image acquirement device; a static treating process calculating a pixel size and a distance between the marker and the image acquirement
  • the present invention is characterized that in the contents generation process, when another image model is selected, the
  • a system of a 3D hair style simulation using augmented reality comprises an image acquirement unit obtaining an image of a user and a marker of in real; a video ⁇ interface unit receiving a video image stream from the image acquirement unit and transferring a non-amended image to a tracking module unit; a tracking module unit recognizing the marker, calculates a distance to the image acquirement unit and a pixel size of the marker, and adjusting the calculated
  • K K pixel size
  • a rendering module unit generating an image model of the marker, calculating an alpha value, and performing a rendering operation with the image model using the alpha value to generate an object
  • a measure module unit adjusting a frame speed of the user and the object
  • the system further comprises a controller adjusting a size of the object and a rotation angle of the object.
  • the object comprises virtual sunglasses, a virtual accessory, and virtual clothes.
  • the 3D hair style simulation system and method using augmented reality according to the present invention matches
  • the present invention maps an image generated by a surface unit every strand to be presented by an image closer to a real image when the image represents a hair.
  • FIG. 1 is a flow chart showing a 3D hair style simulation using augmented reality according to a present invention.
  • the present invention first, obtains an image a user and a marker using an image acquirement device (SIl). At this time, the present invention describes using a marker recognition technique, but may embody using a conventional recognition technique such as a barcode recognition technique, and an audio recognition technique, etc . Sequentially, the present invention recognizes the obtained marker (S112) and calculates a distance from the image acquirement device and a pixel size of the marker (S113). At this time, the present invention may obtain accurate ⁇ information of matching of real coordinates and coordinates, to which a virtual object is applied, a position of a user, and a direction of user's eyes, and the obtainment method will be described below.
  • the present invention calculates the size using a difference between a size of the marker obtained from the image and a size of a real marker and a distance between the marker and a camera.
  • size information that is, a pixel size, of the marker
  • the image is obtained by defined the size of the marker as 3cm*3cm.
  • a distance between the image acquirement device and i the marker is about 60cm to about 90cm, the most static stability may be obtained, as the size of the marker increases, the distance between the image acquirement device and the marker becomes more far.
  • the marker mirrored in a screen become larger as the distance between the image5 acquirement device and the marker is closer, so that the size of the marker is in inverse proportion to the distance between the image acquirement device and the marker.
  • the size of the image for obtaining the most static stability is a 85*85 pixel.
  • the present invention generates an image model (S114), calculates an alpha value (S115), and performs a rendering operation using the alpha value and the image model to generate a virtual hair (hereinafter, referred to as 'an object' ) .
  • the present invention described the
  • Hi virtual hair as an example, but the object corresponding to the virtual hair may be virtual sunglasses, a virtual accessory, and virtual clothes, etc. Thus, the object is not defined as the virtual hair.
  • the present invention prepares an image mapping source and an alpha image mapping source and applies an alpha blending process, to generate one() image mapping source to which an alpha value is applied. That is, the alpha blending process uses three basic colors such as red, green, and blue for displaying information on a screen in a rendering process.
  • the alpha value is added to the alpha blending process.
  • the alpha value is related to gray of each pixel, and called an alpha channel.
  • the alpha channel is 8 bits and has about 0 to 255. 0 means a bright stage and 255 means a dark state.
  • the present invention uses a simple image processing application algorithm, to which the alpha value is applied when converting the two image mapping sources into the VR using a conventional image processing, to solve the problem.
  • the present invention selects the generated object (S117) or adjusts a size of the object (S118). At this time, for selecting another object instead of the generated object, the present invention re-performs from the generation of the image model to the rendering operation.
  • the present invention controls the frame speed between the generated object and a user to apply to the user (Sl 19).
  • the present invention controls the frame speed between the generated object and a user to apply to the user (Sl 19).
  • the present invention applies the object to a user's figure to display (S120) .
  • FIG. 2 is a block diagram of a 3D hair style simulation system using augmented reality.
  • the present invention includes an image acquirement unit 210, a video interface unit 220, a tracking module unit 230, a rendering module unit 240, a controller i (not shown), a measure module unit 250, and a displaying unit
  • the image acquirement unit 210 obtains images of a user and a marker in the real environment. At this time, the user exposes a hair band or a skin cap, to which the marker5 is attached, to the image acquirement unit 210 and the marker is generated in the exposed position.
  • the present invention uses a recognition technique such as the marker, but may use a conventional recognition technique.
  • the video interface unit 220 receives a video image(i stream from the image acquirement unit 210 and transfers a non-amended image to the tracking module unit 230.
  • the tracking module unit 230 recognizes the marker, calculates a distance between the marker and the image acquirement unit 210, calculates a pixel size of the marker,5 and adjusts the calculated pixel size.
  • the marker is calculated as the pixel size in the tracking module unit 230.
  • the size of the marker is 3*3, pixels of the marker are about 80 to about 90 pixels.
  • the rendering module unit 40 generates an image model of the marker, calculate an alpha value, and performs a rendering operation with the image model using the alpha value to generate an object.
  • the controller may control a size of the object generated in the rendering module unit 240 and adjust a rotation angle of the object.
  • the measure module unit 250 adjusts a frame speed of the user and the object, such that the object also moves in a direction a user to move.
  • mapping an image of the mapping to png capability of the object for the rendering decreases, so that the static errors are more reduced than a conventional bit map image or a texture mapping.
  • the displaying unit outputs a movement the object moving in accordance with a user's movement.
  • FIG. 3 is a diagram showing processes simulating 3D hair style using augmented reality.
  • (a) of FIG. 3 shows a user wearing a hair band, at which a marker is attached
  • (b) of FIG. 3 shows that the marker is exposed to a camera and a virtual hair, that is, an object, corresponding to the marker is positioned on a head portion of the user, such that the object is matched to the head portion
  • (c) and (d) of FIG. 3 shows that the object matched to the head portion of the user moves in the same direction as the user' s direction to view a left or right status when the user' s head moves to a left or right direction.

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Abstract

The present invention relates to a 3D hair style simulation system and method using augmented reality. In particular, the present invention relates to a 3D hair style simulation system and method using augmented reality that a user synthesizes a virtual hair in a real time image environment, embodies the virtual hair using augmented reality, which is a computer technique, to make the virtual hair look like an object existing in the real environment, and applies various hair styles to an user's face in real time to fine a desired hair style. Thereby, without directly experiences of a desired hair style and a fashionable hair style, a user selects a suitable hair style using a virtual hair style.

Description

[SPECIFICATION] [invention Title]
3D HAIR STYLE SIMULATION SYSTEM AND METHOD USING AUGMENTED REALITY
^ [Technical Field]
The present invention relates to a 3D hair style simulation system and method using augmented reality. In particular, the present invention relates to a 3D hair style simulation system and method using augmented reality that a user
K) synthesizes a virtual hair in a real time image environment, embodies the virtual hair using augmented reality, which is a computer technique, to make the virtual hair look like an object existing in the real environment, and applies various hair styles to an user' s face in real time to fine a desired ις hair style.
[Background Art]
Peoples visiting a hair shop feels to follow hair styles of well-known television entertainers or new fashionable hair styles. However, for conforming whether the hair styles are0 suitable for one's face type, one directly experiences the styles using limited numbered hair style's samples, and then determines whether the hair styles are suitable for.
For solving the inconvenience, usually, one confirms an own style synthesizing a 2D image of 2D using an own picture or ? an own image. Also, in a 3D hair style simulation, for embodying a 3D hair style, a basic face frame of 3D is manufactured to model a face model of a user, and by overlapping a 2D face image captured by a digital camera to a face frame of 3D, a hair style model is applied to a 3D face model displayed in Web.
However, whenever the simulation is performed using the above methods, the taking picture of a user, the data processing, and the data matching are repeated. Thereby, the user's inconvenient increases. Event though a conventional simulation is embodied to a 3D shape, only the front figure of a user is displayed due to static errors or dynamic errors of a virtual hair such that it is hard to obtain the accurate result.
In addition, since a conventional 3D hair image is formed by a surface unit, the 3D hair image is unrealistic and when the 3D hair image is matched the matched image is not similar to a real image.
[DETAILED DESCRIPTION]
[Technical Problem] For solving the problems, the purpose of the present invention provides a method of a 3D hair style simulation using augmented reality that a virtual object is matched to a user's image in the real environment obtained by a camera, the virtual object projected by the marker in accordance with the user' s movement moves along with the user' s movement such that various styles are represented by 3D in advance.
The purpose of the present invention provides a method of a
3D hair style simulation using augmented reality that a 3D
5 image generated by a surface unit is separately mapped every strand to be presented by a 3D image shape closer to a real image shape.
[Technical Solution] For achieving the purpose, a method of a 3D hair style
K) simulation using augmented reality according to the present invention comprises an image acquirement process obtaining an image of a user and a marker using an image acquirement device; a static treating process calculating a pixel size and a distance between the marker and the image acquirement
15 device recognizing the obtained marker; a rendering treating process image-generating an image model of the marker, calculating an alpha value to operate a rendering with the image model, and generating an object; a contents generating process adjusting a size of the generated object or selecting
:ιι another image model; and a static treating process controlling a frame speed of the generated object and the user to apply to the user.
The present invention is characterized that in the contents generation process, when another image model is selected, the
25 rendering treating process is repeated. For achieving the purpose, a system of a 3D hair style simulation using augmented reality according to another present invention comprises an image acquirement unit obtaining an image of a user and a marker of in real; a video ^ interface unit receiving a video image stream from the image acquirement unit and transferring a non-amended image to a tracking module unit; a tracking module unit recognizing the marker, calculates a distance to the image acquirement unit and a pixel size of the marker, and adjusting the calculated
K) pixel size; a rendering module unit generating an image model of the marker, calculating an alpha value, and performing a rendering operation with the image model using the alpha value to generate an object; a measure module unit adjusting a frame speed of the user and the object; and a displaying
15 unit outputting a movement the object moving in accordance with a user's movement.
In the present invention, the system further comprises a controller adjusting a size of the object and a rotation angle of the object. 0 In the present invention, the object comprises virtual sunglasses, a virtual accessory, and virtual clothes. [Advantageous Effects]
The 3D hair style simulation system and method using augmented reality according to the present invention matches
2s a virtual object (a hair, an accessory, and clothes) to a user's image in the real environment obtained by a camera, and has improved reality due to reduced static and dynamic errors, such that accurate information is obtained through simulation showing the right, left, and upward figures as well as the front figure.
By the accurate information obtained by the present invention, without an actual user's experience, a user selects a suitable hair style and accessories, etc. Accordingly, undesired purchases or unsuitable hair styles are avoided, the user's convenience is improved.
In addition, the present invention maps an image generated by a surface unit every strand to be presented by an image closer to a real image when the image represents a hair. [Best Mode] Hereinafter, embodiments of the present invention will be described in detail referring to drawings.
FIG. 1 is a flow chart showing a 3D hair style simulation using augmented reality according to a present invention.
As shown in FIG. 1, the present invention, first, obtains an image a user and a marker using an image acquirement device (SIl). At this time, the present invention describes using a marker recognition technique, but may embody using a conventional recognition technique such as a barcode recognition technique, and an audio recognition technique, etc . Sequentially, the present invention recognizes the obtained marker (S112) and calculates a distance from the image acquirement device and a pixel size of the marker (S113). At this time, the present invention may obtain accurate ^ information of matching of real coordinates and coordinates, to which a virtual object is applied, a position of a user, and a direction of user's eyes, and the obtainment method will be described below.
As processes calculating a size of one pixel using a static
K) treatment, the present invention calculates the size using a difference between a size of the marker obtained from the image and a size of a real marker and a distance between the marker and a camera. In the present invention, size information, that is, a pixel size, of the marker
15 representing the most static stability in the image obtained is needed. At this time, the image is obtained by defined the size of the marker as 3cm*3cm. Generally, in having a resolution of 1024*768, when a size of a pixel is about 0.04cm, a distance between the image acquirement device and (i the marker is about 60cm to about 90cm, the most static stability may be obtained, as the size of the marker increases, the distance between the image acquirement device and the marker becomes more far. The marker mirrored in a screen become larger as the distance between the image5 acquirement device and the marker is closer, so that the size of the marker is in inverse proportion to the distance between the image acquirement device and the marker. The size of the image for obtaining the most static stability is a 85*85 pixel.
^ Next, the present invention generates an image model (S114), calculates an alpha value (S115), and performs a rendering operation using the alpha value and the image model to generate a virtual hair (hereinafter, referred to as 'an object' ) . At this time, the present invention described the
Hi virtual hair as an example, but the object corresponding to the virtual hair may be virtual sunglasses, a virtual accessory, and virtual clothes, etc. Thus, the object is not defined as the virtual hair.
Next, a method for generating the object will be described l> below.
By dividing an image model corresponding to an object by a surface unit of a basic 30*240 pixel, the present invention prepares an image mapping source and an alpha image mapping source and applies an alpha blending process, to generate one() image mapping source to which an alpha value is applied. That is, the alpha blending process uses three basic colors such as red, green, and blue for displaying information on a screen in a rendering process. The alpha value is added to the alpha blending process. The alpha value is related to gray of each pixel, and called an alpha channel. The alpha channel is 8 bits and has about 0 to 255. 0 means a bright stage and 255 means a dark state. When converting two equal image mapping sources into VR, since an alpha value is not applied in an image processing, a hair is embodied by a surface unit. However, for regularly performing the blending in converting the two equal image mapping sources into the VR, the present invention uses a simple image processing application algorithm, to which the alpha value is applied when converting the two image mapping sources into the VR using a conventional image processing, to solve the problem.
Next, the present invention selects the generated object (S117) or adjusts a size of the object (S118). At this time, for selecting another object instead of the generated object, the present invention re-performs from the generation of the image model to the rendering operation.
Sequentially, the present invention controls the frame speed between the generated object and a user to apply to the user (Sl 19). At this time, for solving a problem due to the time delay required for rendering a virtual image in accordance with variations of the position of the user and the direction of user's eyes, if mapping an image of the mapping to png, capability for the rendering decreases, so that static errors are more reduced than a conventional bit map image or a texture mapping.
Finally, the present invention applies the object to a user's figure to display (S120) .
,-s FIG. 2 is a block diagram of a 3D hair style simulation system using augmented reality.
As shown in FIG. 2, the present invention includes an image acquirement unit 210, a video interface unit 220, a tracking module unit 230, a rendering module unit 240, a controller i (not shown), a measure module unit 250, and a displaying unit
260.
Here, the image acquirement unit 210 obtains images of a user and a marker in the real environment. At this time, the user exposes a hair band or a skin cap, to which the marker5 is attached, to the image acquirement unit 210 and the marker is generated in the exposed position. In addition, the present invention uses a recognition technique such as the marker, but may use a conventional recognition technique.
Here, the video interface unit 220 receives a video image(i stream from the image acquirement unit 210 and transfers a non-amended image to the tracking module unit 230.
Here, the tracking module unit 230 recognizes the marker, calculates a distance between the marker and the image acquirement unit 210, calculates a pixel size of the marker,5 and adjusts the calculated pixel size. The marker is calculated as the pixel size in the tracking module unit 230. When the size of the marker is 3*3, pixels of the marker are about 80 to about 90 pixels.
Here, the rendering module unit 40 generates an image model of the marker, calculate an alpha value, and performs a rendering operation with the image model using the alpha value to generate an object.
Here, the controller (not shown) may control a size of the object generated in the rendering module unit 240 and adjust a rotation angle of the object.
Here, the measure module unit 250 adjusts a frame speed of the user and the object, such that the object also moves in a direction a user to move.
At this time, for solving static errors due to the time delay required for rendering a virtual image in accordance with variations of the position of the user and the direction cf user's eyes, if mapping an image of the mapping to png, capability of the object for the rendering decreases, so that the static errors are more reduced than a conventional bit map image or a texture mapping.
Here, the displaying unit outputs a movement the object moving in accordance with a user's movement.
FIG. 3 is a diagram showing processes simulating 3D hair style using augmented reality. (a) of FIG. 3 shows a user wearing a hair band, at which a marker is attached, (b) of FIG. 3 shows that the marker is exposed to a camera and a virtual hair, that is, an object, corresponding to the marker is positioned on a head portion of the user, such that the object is matched to the head portion, (c) and (d) of FIG. 3 shows that the object matched to the head portion of the user moves in the same direction as the user' s direction to view a left or right status when the user' s head moves to a left or right direction.
Thus, by the 3D hair style simulation system and method using augmented reality according to the present invention, accurate information that reality is improved is obtained. While this invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

WHAT IS CLAIMED IS:
1. A method of a 3D hair style simulation using augmented reality, comprising: an image acquirement process obtaining an image of a user 5 and a marker using an image acquirement device; a static treating process calculating a pixel size and a distance between the marker and the image acquirement device recognizing the obtained marker; a rendering treating process image-generating an image K) model of the marker, calculating an alpha value to operate a rendering with the image model, and generating an object; a contents generating process adjusting a size of the generated object or selecting another image model; and a static treating process controlling a frame speed of the 15 generated object and the user to apply to the user.
2. The method of claim 1, wherein in the contents generation process, when another image model is selected, the rendering treating process is repeated. 0
3. A system of a 3D hair style simulation using augmented reality, comprising: an image acquirement unit obtaining an image of a user and a marker of in real; a video interface unit receiving a video image stream from the image acquirement unit and transferring a non-amended image to a tracking module unit; a tracking module unit recognizing the marker, calculates a 5 distance to the image acquirement unit and a pixel size of the marker, and adjusting the calculated pixel size; a rendering module unit generating an image model of the marker, calculating an alpha value, and performing a rendering operation with the image model using the alpha K) value to generate an object; a measure module unit adjusting a frame speed of the user and the object; and a displaying unit outputting a movement the object moving in accordance with a user's movement, is
4. The system of claim 3, further comprising a controller adjusting a size of the object and a rotation angle of the object. () 5. The system of claim 1 or 3, wherein the object comprises virtual sunglasses, a virtual accessory, and virtual clothes. [BRIEF DESCRIPTION OF THE DRAWINGS]
FIG. 1 is a flow chart showing a 3D hair style simulation using augmented reality according to a present invention.
FIG. 2 is a block diagram of a 3D hair style simulation system using augmented reality.
FIG. 3 is a diagram showing processes simulating 3D hair style using augmented reality. description of the reference numerals in the drawings>
210: image acquirement unit 220: video interface unit
230: tracking module unit
240: rendering module unit
250: measure module unit
260: displaying unit
PCT/KR2008/005109 2008-08-29 2008-09-01 3d hair style simulation system and method using augmented reality WO2010024486A1 (en)

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