KR100682978B1 - System to extract optical characteristic maps from one's photographic face images and its method - Google Patents

Abstract

A system for extracting an optical characteristic map of a face by using an image and a method therefor are provided to analyze an image acquired after a face of a person is directly photographed, divide the image into maps according to an optical characteristic of a face surface, extract map data, analyze the map data, and combine the analyzed map data to reproduce actual face expression. An image acquiring unit(10) acquires real images of a face by using a reference image sensing device known after an optical characteristic is obtained. A map extracting and reproducing unit(20) analyzes the real face images acquired in the image acquiring unit(10), divides the analyzed faced images into maps according to the optical characteristic, extracts map data, analyzes and combines the extracted map data to be suitable for reproduction conditions, and expresses a real face.

Description

System to extract optical characteristic maps from one's photographic face images and its method}

1 is a configuration diagram of an optical characteristic map extraction system of a face using an image according to the present invention;

2 is a flowchart illustrating a method for extracting an optical characteristic map of a face using an image according to the present invention;

3 is a detailed flowchart illustrating an image acquisition process in an optical characteristic map extraction method of a face using an image according to the present invention;

4A to 4D are detailed diagrams illustrating an environment setting process in an optical characteristic map extraction method of a face using an image according to the present invention;

5 is a detailed flowchart illustrating a map extraction and reproduction process in the optical characteristic map extraction method of the face using the image according to the present invention.

* Explanation of symbols for the main parts of the drawings

10: image acquisition unit 20: map extraction and reproduction unit

100: standard light source generator 200: standard image sensing device

210: exposure control device 300: face lock

400: polarization filter synchronization device 500: position changing device

600: image data analysis module 700: map extraction module

800: map analysis module 900: reflector

The present invention relates to a system for extracting an optical characteristic map of a face using an image and a method thereof, and more particularly, to construct a system for directly photographing a human face image (or image) and separating it into maps according to optical characteristics of a face surface. Using the optically separated map data extracted by the system, the extraction of the optical characteristic map of the face using the image to effectively use the map data when expressing the realistic face by computer graphics method A system and method thereof are provided.

In the present invention, the image refers to digital image or image data (hereinafter simply referred to as "image"), and is an original photorealistic image generated by the image sensing device and a photorealistic image generated by a simulation result. ).

That is, in the present invention, the original live-action image is data obtained by converting light energy into a form that can be perceived by a human by an image sensing device, and the light energy emitted from the light source is reflected on an object (face in the present invention). Finally, the image is converted and expressed by the image sensing device, and the realistic image is a result generated by using a computer graphics method using the system according to the present invention. That is, the present invention provides a configuration capable of acquiring original photorealistic images so that optical characteristics of a face are included, and a method for extracting and interpreting necessary map data from the obtained original photorealistic images and using them in a realistic image representation. It is about.

Conventionally, in order to extract face map data of a digital actor, first, an image of a face of an actual actor is obtained. As a specific method, in order to obtain face color map data corresponding to an intrinsic color of a face, a method of photographing obtained by installing a light source to be reflected on the face as evenly as possible and applying makeup to prevent reflection on the face, and reflection There is a way to remove the reflections manually by using an image editing tool from the image.

In order to realistically express the face, map data including information on the pores and wrinkles of the face is required, and the distribution of melanin and hemoglobin is required on a scale representing the blackness and redness of the face skin. Such information may be generated by individual image processing methods, or may be implemented by generating distribution map data based on human experience. However, since the individual image processing methods are processed only in each condition, they have not been able to provide integrated and consistent information, and since the experience method is an inaccurate approximation result, there is a limit to realistic image reproduction even when combined with an accurate facial skin reflection model. come.

Korean Patent Laid-Open Publication No. 2003-48913 (Method and Apparatus for Generating Textures for Three-Dimensional Face Models, published on June 25, 2003) uses a front and at least one side image to display a required portion of a predetermined center portion. A method of creating a texture by zooming in and interpolating an image is presented. However, the conventional technique is not an optical characteristic map extraction method, but a method of generating a texture by modifying a basic image, which is not suitable for high quality texture due to high possibility of distortion caused by enlarged interpolation.

In addition, Korean Patent Laid-Open Publication No. 2003-87866 (a face image automatic photographing system and method thereof, published on November 15, 2005) presents a face photographing system and a method for automatically adjusting lighting and camera photographing angles. It is. However, this conventional technology merely suggests a convenient shooting method such as automatic adjustment of illumination and shooting angle, and there is no suggestion of a technology related to high quality texture.

In addition, US Pat. No. 6,883,634 (Apparatus and method for measuring optical characteristics of an object) is a system for measuring accurate optical characteristics of a specific point of an object, a method of forming various color spectral photometers Presenting. However, this conventional technique is a technique of measuring the light itself (point-based mainly) to find out the exact optical characteristics of a specific point of an object. It is not suitable for direct use as a device for producing content, but instead is more suitable for use as reference data for a line-based or area-based device.

In addition, US Patent No. 6850274 (Image texture mapping camera) proposes a method of configuring the camera to generate a result of the texture mapping of an additional image called ArtCard to the photographed image by image capture have. However, this prior art is about a camera configuration method capable of acquiring an image as a result of texture mapping an additional data called an ArtCard, and is characterized by changing the original image, and is difficult to use as a high quality texture method and is a specific method. Has not been presented.

The present invention has been proposed to solve the above problems, by analyzing an image obtained by directly photographing the face of a person to separate the map data into maps according to the optical characteristics of the surface of the face, and to analyze the map data It is an object of the present invention to provide an optical characteristic map extraction system and a method for extracting a face using an image for combination to reproduce a typical facial expression.

That is, according to the present invention, a face image is obtained by using an image acquisition unit including an image sensing device of which optical properties are known, and the map data is extracted by analyzing the acquired image and separating the map image into maps suitable for the optical properties. It is an object of the present invention to provide a system for extracting an optical characteristic map of a face using an image and a method for analyzing and combining the extracted map data in order to realistically express a face.

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. Also, it will be readily appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

A system of the present invention for achieving the above object, the system for extracting the optical characteristic map of the face using the image, the image acquisition means for acquiring the actual images of the face by using a standard image sensing device known optical properties; And extracting map data by analyzing real face images acquired by the image acquiring means into maps according to optical characteristics, and interpreting and combining the separated map data according to a reproduction situation, and using the same to realistically express a face. Map extracting and reproducing means to enable.

On the other hand, the method of the present invention, the method for extracting the optical characteristic map of the face using the image, the image acquisition step of acquiring the actual images of the face using a known standard image sensing device obtained optical properties; A map extraction step of extracting map data by analyzing the obtained real face image and separating the maps into maps based on optical characteristics; And a map analysis step of interpreting and combining the separated and extracted map data according to the reproduction situation so as to be used to realistically express the face.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, whereby those skilled in the art may easily implement the technical idea of the present invention. There will be. In addition, in describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram of an optical characteristic map extraction system of a face using an image according to the present invention.

As shown in FIG. 1, the system for extracting an optical characteristic map of a face using an image according to an exemplary embodiment of the present invention may be used to process real images of a face by using a standard image sensing device 200 in which an optical characteristic is obtained and known. Analyze the image acquisition unit 10 for acquiring and the real face image acquired by the image acquisition unit 10 to extract map data by dividing the map data into maps suitable for optical characteristics, and reproduce the separated map data. It is provided with a map extraction and reproducing unit 20 to be interpreted and combined to suitably use to realistically express the face.

Each component of the optical characteristic map extraction system of the face using the image having the above configuration will be described in more detail as follows.

First, the image acquisition unit 10, which is mainly implemented as a hardware device and generates data to be processed, obtains a standard light source generation unit 100, an image for generating a standard light source, and provides illumination to an object. In order to facilitate the analysis, a standard image sensing device 200 and an exposure control device 210 that know optical characteristics, a face fixing device 300 for fixing an object face, and an easy-to-process form A polarization filter synchronizing device 400 to be used, and a position changing device 500 for changing the position of the component in order to obtain data under optimum conditions.

Here, the position change device 500 may change the position of the standard image sensing device 200 or the position of the standard light source generator 100. The standard image sensing device is a commercially available device that incorporates an image sensor. For example, the standard image sensing device corresponds to a camera.

In addition, the reflecting apparatus 900 is an additional component of the present invention, and includes a direction control function so that the image sensing apparatus 200 may acquire a specific portion of an object (face) to be acquired by using a reflector such as a mirror. Device. That is, one standard image sensing device 200 is obtained by acquiring an object (face) area data acquisition effect of each part from the plurality of standard image sensing devices 200 together with information reflected by the reflector of the reflecting device 900. Use to get all at once.

Meanwhile, the map extracting and reproducing unit 20, which processes the acquired images, analyzes the image data acquired by the image obtaining unit 10 to obtain information (eg, image size, focus, etc.) necessary for image processing. Image data analysis module 600 for obtaining distance, image color tone, image color distribution, etc., and map extraction module 700 for extracting necessary map data from the image data pair analyzed by the image data analysis module 600. , And a map analysis module 800 for combining the maps extracted by the map extraction module 700 and interpreting them according to a situation. Each component will be described later in more detail with reference to FIG. 2.

2 is a flowchart illustrating a method of extracting an optical characteristic map of a face using an image according to an exemplary embodiment of the present invention.

First, an optical characteristic is obtained from the image obtaining unit 10 and obtained using a known standard image sensing device 200 to obtain real images of a face in a state where it is easy to process (201).

In more detail, as a method of obtaining an original image for generating map data in the image acquisition unit 10, the polarization filter of the same direction is provided to the standard light source generator 100 and the standard image sensing device 200. A first method of acquiring an image using the second method, a second method of acquiring an image using a polarization filter in which the standard light source generating unit 100 and the standard image sensing device 200 are perpendicular to each other, and the standard light source generating unit A third method of acquiring an image without using a polarization filter in the 100 and the standard image sensing device 200 may be performed. For reference, acquiring an image by using the polarization filter means that the light of the standard light source generator 100 reaches the object through the polarization filter, and the light reflected from the object also senses the standard image through the polarization filter. It means that the device 200 is reached and an image is acquired.

Here, the third method may be selectively used for the purpose of excluding the influence of the polarization filter. On the other hand, when the characteristics of the polarizing filter are known and the color change by the polarizing filter can be eliminated, or the color change by the polarizing filter does not significantly affect the content production, the first and second methods are acquired. Can be processed into an image.

Thereafter, the actual face image acquired by the image acquisition unit 10 is analyzed and separated into maps suitable for the optical characteristics to extract map data (202).

In more detail, in the map extraction process 202, the image obtained by the first method, which is the case where the splicing characteristic is removed in the image acquisition process 201, and the case where the sparkling characteristic is included A color map, a specular map, a wrinkle distribution map, a pore distribution map, and the like may be extracted using the difference of the image acquired by the second method. Can be. In addition, after determining the image data distribution by color and brightness, the melanin distribution map that determines the black characteristics on the skin and the hemoglobin distribution that determines the red characteristics using the Principal Component Analysis (PCA) method. A hemoglobin distribution map can be obtained.

Thereafter, the separated and extracted map data are interpreted and combined according to the reproduction situation to be used to realistically express the face (203).

In more detail, the map analysis process 203 is a process of inversely combining the maps extracted in the map extraction process 202, which is a basic brightness generated by a light source and a viewpoint, Phong, and Blin. Results calculated by illumination models such as Blinn and skin optics models, pore distribution maps including diffuse color maps, wrinkle distribution maps, melanin distribution maps, and hemoglobin distributions. The map is combined to represent the final color. In addition, by obtaining a normal distribution map using the glitter map, the function of emphasizing or alleviating glittering parts, pores, and wrinkles caused by animations, light sources, or viewpoint changes can be handled.

As described above, the image acquired by the image acquisition unit 10 is a map extraction process (202) separated by the optical characteristics by the map extraction and reproduction unit 20 and a map analysis process for processing the extraction result according to the situation ( 203) and used for the production of high quality digital content.

3 is a detailed flowchart illustrating an image acquisition process in the method for extracting an optical characteristic map of a face using an image according to the present invention.

First, an environment of a hardware system for photographing a face is set (301). This will be described later in detail with reference to FIGS. 4A to 4D.

Subsequently, the object may be set to 'use filter or not use filter' according to the aforementioned first to third methods (three types of image acquisition methods, and in some cases, two methods including the first method and the second method). A person pair is photographed to acquire an image pair (302). That is, 'use filter' is an essential image pair meaning the first method and the second method, and 'no filter use' is the third method, paired with the first method or the second method as necessary to change the color of the polarization filter. It is used to eliminate the effect.

Thereafter, the image pair resulting from the photographing result is stored (303).

4A through 4D are detailed diagrams illustrating an environment setting process in the method for extracting an optical characteristic map of a face using an image according to the present invention.

In the present invention, the first to the third method presented in the above-described image acquisition process 201 (three methods of image acquisition, two methods including the first method and the second method may be possible in some cases) If it is possible to obtain a desired image while satisfying the present invention, one of the environment setting examples of FIGS. 4A to 4D shown as an embodiment may be selected, and the environment may be set in other ways.

The examples of FIGS. 4A-4D illustrate a standard image sensing device arrangement for maintaining the ratio while minimizing the movement of a living person, among other ways to ensure that all parts of the face have a constant ratio of size and geometric size on the image. As an example, the layout method is not limited to the method shown in FIGS. 4A to 4D, and the number of the standard light source generators 100 and the number of the standard image sensing devices 200 are not limited to the illustrated number or positions.

4A is a diagram illustrating a case in which the standard image sensing device 200 and the standard light source generating unit 100 are disposed in the same position by pairing the object, and the object is fixed and the standard image sensing device 200 and the standard light source are generated. A plurality of standard image sensing devices 200 may be disposed or correspondingly disposed at positions where the image 100 for the entire object may be obtained by arranging the unit 100 in pairs, and an image pair may be obtained. When the geometric change of the object is minimized and the light source intensity or the light source is arranged so that no shadow occurs on the object.

4B is a diagram illustrating a case in which the standard image sensing device 200 and the standard light source generating unit 100 are disposed at different positions, respectively, and the object is fixed and the standard image sensing device 200 and the standard light source generating unit ( 100) at different positions, and a plurality of standard image sensing devices 200 are disposed or correspondingly positioned at positions where image data of the entire object can be obtained, and the geometric of the object is obtained when obtaining the image pairs. This is a case where the light source intensity or the light source is arranged so that the change is minimized and no shadow is generated on the object.

4C is a diagram illustrating a method of acquiring data using a standard image sensing device 200 capable of high-speed line scan. The image is rotated to obtain image data of the entire object, and the standard image sensing device 200 is illustrated. And a pair of standard light source generators 100 are disposed at the same position, and the standard image sensing device 200 capable of high-speed line scanning is fixed in a single number to acquire data, and the geometric change of the object when obtaining an image pair It is fixed except for the rotating part of the object to minimize the, and indicates that the environment is set to be rotated 180 degrees reciprocating rotation or 360 degrees twice.

4D is a diagram illustrating a case of using the reflector 900. After fixing an object and adjusting a direction of the reflector 900 to obtain a desired object part, the light source intensity and the shadow of the object are not generated. In consideration of the position, the standard light source generator 100 may be disposed, and the object image data directly acquired from the front and the image data from the reflector 900 may be simultaneously acquired using one standard image sensing device 200. This is the case when the environment is set. If the same sized map data is to be obtained, the standard image sensing device 200 of FIG. 4D should be larger than the image capturing capability (resolution) of the standard image sensing device 200 used in FIGS. 4A, 4B, and 4C described above. In particular, in the case of using a planar reflector, since the acquired image data is shorter than the reflected image data even in the obtained image data, the image is enlarged and acquired. Therefore, it is preferable to reduce the size of the reflected image data to generate a map. need. That is, when the reflecting apparatus is a planar reflector, even in the acquired image data, in order to reduce the acquisition distance difference and the color difference between the directly acquired image data and the reflected image data, the directly acquired image data having a shorter acquisition distance is reflected. It is necessary to reduce the size of the acquired image data and change the size of the acquired image data directly in consideration of the amount absorbed by the reflector.

As described above, the configuration method of FIGS. 4A, 4B, and 4D differs greatly from the fact that the object is fixed, but the configuration method of FIG. 4C rotates the object, and in particular, FIG. 4D is a new additional device. The difference is that different parts of the object can be obtained at one time using the 900. 4A to 4D can acquire images using the three image acquisition methods presented in the image acquisition process 201, and the geometrical change is minimized when the image pairs are obtained, and the face is not shadowed. Selecting a light source intensity or an easy environment setting method can be easily processed by the map extraction and reproducing unit 20.

5 is a detailed flowchart illustrating a map extraction and reproduction process in the optical characteristic map extraction method of the face using the image according to the present invention.

First, the image data analysis module 600 interprets the input image data acquired in the image acquisition process 201 to obtain information (eg, image size, focal length, image color tone, image color distribution, etc.) necessary for image processing. Obtain (501).

Subsequently, the map extraction module 700 calculates the difference between the pair of images based on the obtained information, and indicates the optical characteristics such as the color map and the glitter map described above with reference to FIG. 2, and geometry such as a wrinkle distribution map and a pore distribution map. Information indicative of the characteristic is obtained (502).

Thereafter, the map extraction module 700 performs pixel-by-pixel processing using the obtained optical and geometric characteristic information to obtain pixel information (503). That is, after the normal direction and size of each pixel and each pixel information are collectively obtained, pixel information that defines (eg, color tone) the melanin and hemoglobin content of each pixel is obtained using the PCA method.

Thereafter, the map extraction module 700 constructs map data using the obtained pixel information to obtain optical property maps (504).

Thereafter, the map analysis module 800 receives maps (map data) extracted by the map extraction module 700, analyzes input map data to obtain map information (511), sets a parameter for each map, and sets each map. After the new analysis information about the map is obtained by using the information as a weighting value (512), the final pixel color is determined by combining the obtained map analysis information with a result calculated by an illumination model (513). .

As described above, the method of the present invention may be implemented as a program and stored in a recording medium (CD-ROM, ROM, RAM, floppy disk, hard disk, magneto-optical disk, etc.) in a computer-readable form. Since this process can be easily implemented by those skilled in the art will not be described in more detail.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

As described above, the present invention extracts map data that is optically separated more accurately, and then interprets and combines them according to the reproduction situation so that they can be used to realistically express a face, and thus can be utilized for producing high quality digital content. have.

As described above, the present invention obtains original data by a systematic procedure using a photographing system (image acquisition unit) implemented by devices having known optical characteristics, extracts optical characteristic map data more accurately than existing methods, and fits a new situation. Map data can be interpreted more accurately, resulting in more realistic image reproduction.

In addition, the present invention can be applied to an extended channel as well as an RGB color system if the image sensing device can acquire or estimate spectral data.

Therefore, by using the optical characteristic map extraction and reproduction method of the face using the image according to the present invention, it is possible to replace the map source generated by manual processing for use as the face map of the current digital actor. And since it is possible to extract the correct optical and geometric characteristics while reducing the image damage than the manual work that damages the actual image, it is highly valuable as map data for realistic depiction.

In addition, in the past, the map source generation was mainly processed by the content creator's experience, and thus there were many variations in the quality. However, the present invention can obtain a map source with high fidelity according to the optical characteristics. There is an advantage to reduce the deviation.

In addition, the present invention can be used to provide a high-quality map source image that is required to realistically represent the digital actor face that replaces the actual actor in a movie or game that is a lot of digital content, these days can represent a more realistic digital actor It works.

Claims (23)

In the optical characteristic map extraction system of the face using the image, Image acquiring means for acquiring actual images of a face by using a standard image sensing device from which optical characteristics are obtained; And Analyze the real face image acquired by the image acquisition means, extract the map data by dividing it into maps according to the optical characteristics, and interpret and combine the separated extracted map data according to the reproduction situation to be used to realistically express the face. Map Extraction and Reproduction Means Optical characteristic map extraction system of the face using the image comprising a. The method of claim 1, The image acquisition means, A standard light source generator for generating a standard light source to provide illumination to an object (object); The standard image sensing device and exposure control device, the optical image sensing device of which optical properties are known to obtain an image and to facilitate interpretation; A face fixing device for fixing a face that is an object; A polarizing filter synchronizing device used to create processing conditions; And Position change device for changing the position of the component in accordance with the data acquisition conditions Optical characteristic map extraction system of the face using the image comprising a. The method of claim 2, The image acquisition means, A first method of acquiring an image using a polarization filter in the same direction in the standard light source generating unit and the standard image sensing device, and using a polarization filter in a direction orthogonal to the standard light source generating unit and the standard image sensing device Optical characteristics of a face using an image, wherein the image is acquired in a second manner of acquiring an image and in a third manner of acquiring an image without using a polarization filter in the standard light source generator and the standard image sensing device. Map Extraction System. The method of claim 2, The image acquisition means, A first method of acquiring an image using a polarization filter in the same direction in the standard light source generator and the standard image sensing device, and a polarization filter in a direction orthogonal to the standard light source generator and the standard image sensing device Optical image map extraction system using the image, characterized in that for acquiring the image in a second manner to obtain an image. The method of claim 2, The image acquisition means, Reflector for acquiring data of various parts of an object (face) at once through a plurality of the standard image sensing devices Optical characteristic map extraction system of the face using the image further comprising. The method of claim 2, The position change device, And an optical characteristic map extraction system of a face using an image, wherein the position of the standard image sensing device or the position of the standard light source generator is changed. The method according to any one of claims 1 to 6, The map extraction and reproduction means, Image data analysis means for analyzing the actual image data acquired by the image acquisition means to obtain information necessary for image processing; Map extracting means for extracting necessary map data from the image data pair analyzed by the image data analyzing means; And Map analysis means for combining the maps (map data) extracted by the map extraction means and interpreting them according to the reproduction situation to be used to realistically express the face. Optical characteristic map extraction system of the face using the image comprising a. The method of claim 7, wherein The map extraction means, By using the difference between the image obtained by removing the specular characteristic from the image acquiring means and the image obtained by including the specular characteristic, a color map, a specular map, and a wrinkle distribution map ( extract a wrinkle distribution map, and a pore distribution map, After the image data distribution is obtained by color and brightness, the melanin distribution map that determines the black characteristics on the skin and the hemoglobin distribution map that determines the red characteristics using the Principal Component Analysis (PCA) method. System for extracting optical characteristic map of a face using an image, characterized by obtaining a distribution map. The method of claim 8, The map analysis means, Results calculated from basic skin optics models or illumination models generated by light sources and viewpoints, pore distribution maps including color maps, wrinkle distribution maps, and melanin distribution maps. , Combine the hemoglobin distribution map to represent the final color, The normal distribution map is used to obtain a normal distribution map by processing a function of emphasizing or alleviating sparkles, pores, and wrinkles caused by animations, light sources, or viewpoint changes. Property Map Extraction System. In the optical characteristic map extraction method of the face using the image, An image acquiring step of acquiring actual images of a face using a known standard image sensing device by obtaining optical characteristics; A map extraction step of extracting map data by analyzing the obtained real face image and separating the maps into maps based on optical characteristics; And Map analysis step of interpreting and combining the extracted map data according to the reproduction situation to be used to realistically express the face Optical characteristic map extraction method of the face using the image comprising a. The method of claim 10, The image acquisition step, A first method of acquiring an image using a polarization filter in the same direction to a standard light source generating unit and the standard image sensing device, and an image using a polarization filter in a direction orthogonal to the standard light source generating unit and the standard image sensing device. An optical characteristic map of a face using an image, wherein the image is acquired by a second method of acquiring an image and a third method of acquiring an image without using a polarization filter in the standard light source generator and the standard image sensing device. Extraction method. The method of claim 10, The image acquisition step, A first method of acquiring an image using a polarization filter in the same direction in a standard light source generating unit and the standard image sensing device, and a polarization filter in a direction orthogonal to the standard light source generating unit and the standard image sensing device And extracting an image in a second manner of acquiring the image. The method according to any one of claims 10 to 12, The image acquisition step, An environment setting step of setting an environment of a hardware system for photographing an object; Obtaining an image pair by photographing an object (human face) with 'filter use' or 'filter not use'; And Storing an image pair resulting from the photographing result Optical characteristic map extraction method of the face using the image comprising a. The method of claim 13, The environment setting step, The object is fixed, the standard image sensing device and the standard light source generating unit are disposed in the same position, and a plurality of the standard image sensing devices are disposed at positions where the image data of the entire object can be obtained, or And arranging correspondingly, and arranging the light source intensity or the light source such that the geometrical change of the object is minimized and the shadow is not generated on the object when obtaining an image pair. The method of claim 13, The environment setting step, The object may be fixed, the standard image sensing device and the standard light source generating unit may be disposed at different positions, and the standard image sensing device may be disposed in multiple positions or correspondingly at positions where image data of the entire object may be obtained. And arranging the light source intensity or the light source such that the geometrical change of the object is minimized and the shadow is not generated on the object when obtaining the image pair. The method of claim 13, The environment setting step, Rotating an object to obtain image data for the entire object, by placing a pair of the standard image sensing device and the standard light source generating unit in the same position, by fixing a single number of the standard image sensing device capable of high-speed line scan Images are obtained by acquiring data, fixing them except the rotating part of the object to minimize geometric changes of the object when obtaining an image pair, and setting an environment to rotate 180 degrees reciprocally or two times 360 degrees. Extraction method of optical characteristic map of face using The method of claim 13, The environment setting step, After fixing the object, adjusting the direction of the reflecting device so that a desired object portion can be obtained, the standard light source generating unit is disposed in consideration of the light source intensity and position so that no shadow occurs on the object, and the one standard image sensing device Method for extracting the optical characteristic map of the face using the image, characterized in that the environment is set so as to acquire the object image data directly obtained from the front and the image data coming from the reflecting device at a time. The method of claim 17, When the reflecting apparatus is a planar reflector, even in the acquired image data, in order to reduce the acquisition distance difference and the color difference between the directly acquired image data and the reflected image data, the image obtained by directly reflecting the directly acquired image data enlarged with a shorter acquisition distance is reflected. A method of extracting an optical characteristic map of a face using an image which reduces the data size and further performs a function of directly changing the image data size directly in consideration of the amount absorbed by the reflector. The method according to any one of claims 10 to 12, The map extraction step, Analyzing the acquired image data to obtain information necessary for image processing; Calculating the difference between the pairs of images based on the acquired image processing information to obtain information representing optical characteristics such as color maps and glitter maps and information representing geometric characteristics such as wrinkle distribution maps and pore distribution maps; A pixel information obtaining step of obtaining pixel information by performing pixel-by-pixel processing using the obtained optical and geometric characteristic information; And Extracting map data using the obtained pixel information Optical characteristic map extraction method of the face using the image comprising a. The method of claim 19, The map extraction step, In the image acquisition step, a color map, a specular map, and a wrinkle distribution map may be obtained by using a difference between an image obtained by removing the specular characteristic and an image obtained by including the specular characteristic. extract a wrinkle distribution map, and a pore distribution map, After the image data distribution is obtained by color and brightness, the melanin distribution map that determines the black characteristics on the skin and the hemoglobin distribution that determines the red characteristics using the Principal Component Analysis (PCA) method. A method for extracting an optical characteristic map of a face using an image, characterized by obtaining a distribution map. The method of claim 19, The pixel information obtaining step, After the general direction and size of each pixel and the respective pixel information by using the obtained optical and geometric characteristic information, the pixel information defining the melanin and hemoglobin component amount of each pixel is obtained by using the PCA method. An optical characteristic map extraction method of a face using an image. The method of claim 19, The map analysis step, Analyzing the extracted map data to obtain map information; Setting a parameter for each map to obtain map analysis information; And Determining the pixel color by combining the obtained map analysis information with a result calculated by an illumination model. Optical characteristic map extraction method of the face using the image comprising a. The method of claim 22, The map analysis step, Results calculated from basic skin optics models or illumination models generated by light sources and viewpoints, pore distribution maps including color maps, wrinkle distribution maps, and melanin distribution maps. , Combine the hemoglobin distribution map to represent the final color, The normal distribution map is used to obtain a normal distribution map by processing a function of emphasizing or alleviating sparkles, pores, and wrinkles caused by animations, light sources, or viewpoint changes. Property map extraction method.

Images