JP6537049B2 - Method and program for adding desired information to three-dimensional object - Google Patents

Description

  The present invention relates to a method and program for adding desired information to a three-dimensional structure.

  Conventionally, a three-dimensional modeling apparatus (for example, Patent Document 1) that models a three-dimensional object fully automatically based on three-dimensional shape data (for example, Patent Document 1) has been limited to business applications. Small three-dimensional modeling devices (3D printers) are beginning to spread.

  In the future, when the 3D printer is widely spread, the form of commerce in which the supplier supplies the product (entity) to the user is the way for the supplier to shape the product (entity) to the user. It is expected to change to a form of supplying three-dimensional shape data (3D CAD data, 3DCG data, etc.).

  However, in view of the current situation where illegal copying of digital content that has passed the copyguard mechanism has not stopped, those who manufacture, use, and sell goods (substances) using illegal copying of three-dimensional shape data will It is easily expected to come out. In that case, it is apparent that suppliers of three-dimensional shape data struggle to prove copyright infringement requiring reliance on the original.

JP 2012-240216 A

  The present invention has been made in view of the problems in the above-mentioned prior art, and the present invention provides a method for facilitating the proof of copyright infringement (illegal copy) relating to three-dimensional shape data.

  As a result of intensive investigations on a method for facilitating the proof of copyright infringement relating to three-dimensional shape data, the present inventor has obtained desired information (copyright right) for a three-dimensional object formed based on the three-dimensional shape data. The present invention has been conceived on the assumption that the information) is added secretly.

  That is, according to the present invention, there is provided a method for adding desired information to a three-dimensional object to be formed by the three-dimensional object forming apparatus, wherein three-dimensional shape data for forming a desired three-dimensional object is provided. A method is provided, comprising the steps of acquiring and processing the three-dimensional shape data such that a shape for representing desired information is secretly added to the three-dimensional structure.

  As described above, according to the present invention, since the copyright information is secretly added as a watermark to the three-dimensional structure formed based on the three-dimensional shape data, the copyright infringement related to the three-dimensional shape data is It becomes easy to prove. As an effect, a psychological barrier against illegal copying occurs, and as a result, illegal copying of three-dimensional shape data is suppressed.

BRIEF DESCRIPTION OF THE DRAWINGS The conceptual diagram for demonstrating the method of 1st Embodiment. The conceptual diagram for demonstrating the method of 2nd Embodiment. The conceptual diagram for demonstrating the fine pattern in this embodiment. The conceptual diagram for demonstrating the fine pattern in this embodiment. The conceptual diagram for demonstrating the method of 3rd Embodiment. The conceptual diagram for demonstrating the method of 4th Embodiment. The conceptual diagram for demonstrating the method of 5th Embodiment. The conceptual diagram for demonstrating the method of 6th Embodiment. The conceptual diagram for demonstrating the method for making it not notice addition of copyright information. The conceptual diagram for demonstrating the method for making it not notice addition of copyright information. The conceptual diagram for demonstrating the method for making it not notice addition of copyright information. The conceptual diagram for demonstrating the method of 7th Embodiment.

  Hereinafter, the present invention will be described with the embodiment shown in the drawings, but the present invention is not limited to the embodiments shown in the drawings. In the drawings referred to below, the same reference numerals are used for the common elements, and the description thereof will be omitted as appropriate.

  Hereinafter, a method for secretly adding desired information to a three-dimensional structure formed by the three-dimensional structure forming apparatus will be described based on seven embodiments. In the following, an embodiment will be described in which the copyright information is added to a cylindrical object (hereinafter referred to as a cylindrical object) formed by a 3D printer. In the present embodiment, the copyright information refers to information relating to the copyright relating to at least one of the cylindrical object and the three-dimensional shape data for forming the cylindrical object, and the information is a symbol (any character or Means a shape or a combination of them.

First Embodiment
A first embodiment of the present invention will be described based on FIG. In the present embodiment, first, three-dimensional shape data 10 and copyright information for forming a cylindrical object are prepared. In the present embodiment, the three-dimensional shape data 10 may be either 3D CAD data or 3DCG data. In the following, for convenience of explanation, the copyright information is referred to as alphabetic character "A" (hereinafter, the same applies to the first to seventh embodiments).

  The additional data generation unit 20 generates, as additional data, the three-dimensional shape data 30 of the three-dimensional object whose horizontal cross section is based on the alphabet letter “A” based on the copyright information “A”. Here, as the color attribute of the three-dimensional shape data 30, a color different from the color of the three-dimensional shape data 10 (that is, the cylindrical object) is designated.

  After acquiring the three-dimensional shape data 10 for forming a cylindrical object, the three-dimensional shape data processing unit 40 is formed in such a manner that a three-dimensional object representing the alphabet letter "A" is concealed inside the cylindrical object. Thus, the three-dimensional shape data 10 is processed (the three-dimensional shape data 10 and the three-dimensional shape data 30 are combined).

  The processed data 50 (three-dimensional shape data) processed by the three-dimensional shape data processing unit 40 is then supplied to the market as digital content, and the end user submits the processed data 50 to his 3D printer 60 Create an object.

  As a result, an object 70 shown in FIG. 1 is obtained. As shown by dotted lines in FIG. 1, according to the present embodiment, the structure 70a is formed inside the object 70 in such a manner as to be concealed from the outside.

  Although the end user can not confirm the existence of the structure 70a from the outside, when the object 70 is cut, copyright information "A" appears on the cross section of the cross section of the structure 70a.

  That is, according to the present embodiment, even if the object 70 is illicitly shaped based on the illegal copy, at least the supplier is concerned that the object relates to his own copyright It becomes possible to prove by cutting.

  Since it is unclear what color options the 3D printer used by the user has, the three-dimensional shape data processing unit 40 changes the color of the solid object representing the alphabet letter "A" to the color of the cylindrical object. Generate three-dimensional shape data specified for different arbitrary colors.

  Alternatively, the three-dimensional shape data may be processed so that the three-dimensional shape data processing unit 40 forms the same hollow shape as the shape of the structure 70a described above. According to this method, it can be applied to a 3D printer which can handle only a single color material.

  Furthermore, in the preferred embodiment, both the data for representing copyright information in color and the data for representing in hollow shape are described in the processing data 50, and the printer driver installed in the 3D printer has two types of data. May be selectively executed. In this case, the printer driver refers to the device information of the 3D printer (whether or not the color can be specified), and when two or more colors can be specified, the printer driver automatically transitions to a mode representing copyright information in color, If the above colors can not be designated, the mode is automatically transitioned to a mode in which the copyright information is represented in a hollow shape.

  The first embodiment of the present invention has been described above. Subsequently, a method of adding copyright information to the surface of a three-dimensional object in a form that can not be read with the naked eye will be described based on second to fourth embodiments. Do.

Second Embodiment
A second embodiment of the present invention will be described based on FIG. In the present embodiment, the additional data generation unit 20 generates, based on the copyright information “A”, a fine color pattern 32 (data) representing a character code (for example, an ASCII code) of the alphabet character “A”. . Here, the configuration of color patterns that can be adopted in the present embodiment will be exemplarily described.

  FIG. 3 shows a first example of a color pattern. In the case of this example, as shown in FIG. 3A, a checkerboard pattern of 8 × 8 squares is defined as the minimum unit, and two types of checkerboard patterns obtained by reversing the color of the squares are “1” and “1”, respectively. It corresponds to 0 ".

  FIG. 3 (b) shows a color pattern formed by arranging the two types of checkered patterns shown in FIG. 3 (a) in two rows and eight columns. In this color pattern, the upper part represents "10010011", the lower part represents "01110110", and the information represents 16 bits in total.

  FIG. 4 shows a second example of a color pattern. In the case of this example, as shown in FIG. 4A, a vertically long block pattern (32 squares) in which squares of two types of colors are alternately arranged is defined as the minimum unit, and two types of squares are used. The block patterns of are respectively associated with “1” and “0”.

  FIG. 4B shows a color pattern formed by arranging eight types of the two types of block patterns shown in FIG. 4A in the width direction. This color pattern represents 8-bit information of "10010110".

  In the present embodiment, the scale of the mass constituting the color pattern described above is set to an appropriate size smaller than the resolution of human eyes within a range not exceeding the maximum resolution (tens of microns) of the 3D printer 60. In addition, the number of the mass which comprises the minimum unit is not limited to the aspect shown to FIG. 3 and FIG. 4, It can be set as arbitrary numbers.

  Next, the three-dimensional shape data processing unit 40 acquires the three-dimensional shape data 10 for forming a cylindrical object, and then causes the color pattern 32 generated by the additional data generation unit 20 to appear on the surface of the cylindrical object. The three-dimensional shape data 10 is processed into

  The processed data 52 (three-dimensional shape data) synthesized by the three-dimensional shape data processing unit 40 is then supplied to the market as digital content, and the end user submits the processed data 52 to his 3D printer 60 Create an object.

  As a result, an object 72 shown in FIG. 2 is obtained. As shown in FIG. 2, according to the present embodiment, a color pattern 72a (entity) corresponding to the character code of the alphabet character "A" appears on the surface of the object 72. However, since the color pattern 72a is formed on the finer resolution on the human eye, the end user recognizes it as a uniform color.

  On the other hand, the color pattern 72a can be detected by a known image analysis method. Specifically, the surface of the object 72 is photographed by the high resolution camera 80, and the photographed image is analyzed by the computer 90 to detect the color pattern 72a. The computer 90 decodes the detected color pattern 72a to obtain the character code of the alphabet character "A", and displays the copyright information "A" on the display based on the character code.

  That is, according to the present embodiment, even if the object 72 is formed illegally based on the illegal copy, the supplier analyzes at least the photographed image of the object 72 related to the illegal copy. You will be able to prove that it belongs to your own copyright.

Third Embodiment
A third embodiment of the present invention will be described based on FIG. In the present embodiment, the additional data generation unit 20 generates, based on the copyright information “A”, a fine concavo-convex pattern 33 expressing the character code of the alphabetic character “A”. Here, the concavo-convex pattern in the present embodiment can be conceived as one in which two colors constituting the color pattern described in FIGS. 3 and 4 are replaced with a concave structure and a convex structure.

  That is, the scale of the concavo-convex structure constituting the concavo-convex pattern 33 has an appropriate size smaller than the resolution of human eyes within the range not exceeding the maximum resolution (several tens of microns) of the 3D printer 60 It is set.

  After acquiring the three-dimensional shape data 10 for forming a cylindrical object, the three-dimensional shape data processing unit 40 performs three-dimensional so that the concavo-convex pattern 33 generated by the additional data generation unit 20 appears on the surface of the cylindrical object. The shape data 10 is processed.

  The processed data 53 (three-dimensional shape data) synthesized by the three-dimensional shape data processing unit 40 is then supplied to the market as digital content, and the end user submits the processed data 53 to his 3D printer 60 Create an object.

  As a result, an object 73 shown in FIG. 5 is obtained. As shown in FIG. 5, according to the present embodiment, the concavo-convex pattern 73 a corresponding to the character code of the alphabet character “A” appears on the surface of the object 73. However, since the concavo-convex pattern 73a is formed on a fine scale smaller than the resolution of human eyes, the end user can not confirm the presence with the naked eye.

  On the other hand, the concavo-convex pattern 73a can be detected by a known surface shape analysis method. For example, in the non-contact method, while the surface of the object 73 is scanned with a visible light laser inspected by the laser irradiator 82, the surface is photographed by the high resolution camera 80, and the photographed image is analyzed by the computer 90. The uneven pattern 73a is detected. The computer 90 decodes the detected concavo-convex pattern 73a to obtain the character code of the alphabet character "A", and displays the copyright information "A" on the display.

  That is, according to the present embodiment, even if the object 73 is formed illegally based on the illegal copy, the supplier analyzes at least the surface shape of the object 73 related to the illegal copy. You will be able to prove that it belongs to your own copyright.

  In addition, since the method of this embodiment does not utilize a color, it can be applied to a 3D printer which can handle only a single color material.

Fourth Embodiment
A fourth embodiment of the present invention will be described based on FIG. In the present embodiment, in order to add copyright information, a material whose reflectance to wavelength light in the invisible region is different from the material for forming the matrix is used. As an application of the method of the present embodiment, it may be assumed that the product supplier side adds copyright information to the product (three-dimensional object) in a manner that does not impair the appearance.

  In the present embodiment, the additional data generation unit 20 generates the graphic character 34 (data) of the alphabet character “A” based on the copyright information “A”.

  After acquiring the three-dimensional shape data 10 for forming a cylindrical object, the three-dimensional shape data processing unit 40 processes the three-dimensional shape data 10 so that the graphic characters 34 appear on the surface of the cylindrical object.

  The product supplier inputs the processing data 54 (three-dimensional shape data) processed by the three-dimensional shape data processing unit 40 into the 3D printer 60 to form a three-dimensional object and supply it to the market.

  Here, in the present embodiment, as a material for forming the graphic character 34, a material whose reflectance to wavelength light in the invisible region is different from that of the material forming the cylindrical object (base) is prepared, and the material is graphic The 3D printer 60 is set so that the character 34 is formed.

  As a result, an object 74 shown in FIG. 6 is obtained. FIG. 6 shows an example in which the graphic character 34 is set so as to be made of a material whose reflectance to infrared light is larger than that of the material forming the cylindrical object. As shown in FIG. 6, according to the present embodiment, a region 74 a (entity) composed of a material larger than that of the material for forming the cylindrical object is exposed on the surface of the object 74.

  Since the reflectance to visible light of the material making up the area 74a is not different from that of the material forming the cylindrical object, the end user can not confirm the presence of the area 74a with the naked eye.

  On the other hand, the area 74a is detected by photographing with an infrared camera. For example, when the surface of the object 74 is photographed by the infrared camera 83 under the infrared illumination 85, the area 74a representing the graphic character 34 of the alphabet letter "A" is brightly detected in the photographed image. The copyright information of the object 74 can be grasped.

  In the above, the method of adding the copyright information in a form that can not be read with the naked eye on the surface of the three-dimensional structure has been described, and subsequently, the copyright is in a manner that allows nondestructive reading inside the three-dimensional structure. A method of adding information will be described based on the fifth and sixth embodiments.

Fifth Embodiment
A fifth embodiment of the present invention will be described based on FIG. In the present embodiment, the additional data generation unit 20 generates a pattern 35 (data) corresponding to the character code of the alphabetic character “A” based on the copyright information “A”. Here, the pattern 35 represents binary information by the arrangement of predetermined components on a two-dimensional plane, and is “1” when a component is present at a reference position, and “0” when it is not present. Represents ".

  In the present embodiment, a material having a predetermined physical property different from a material for forming an object (mother body) is prepared, and the 3D printer 60 is set so that the components of the pattern 35 are formed of the material. As the physical properties mentioned here, optical properties, thermal properties, electrical properties, magnetic properties and mechanical properties can be mentioned.

  After acquiring the three-dimensional shape data 10 for forming a cylindrical object, the three-dimensional shape data processing unit 40 forms the three-dimensional shape data 10 so that the pattern 35 is formed so as to be concealed inside the cylindrical object. Process

  When the processed data 55 (three-dimensional shape data) processed by the three-dimensional shape data processing unit 40 is input to the 3D printer 60, an object 75 shown in FIG. 7 is obtained. As shown in FIG. 7, according to the present embodiment, a pattern 75a (entity) consisting of a plurality of regions formed of a material having different physical properties from the material constituting the inside is formed inside the object 75.

  Since the pattern 75a is formed inside the object 75, the presence of the pattern 75a can not be confirmed with the naked eye from the outside, but an appropriate sensing device 86 (corresponding to the physical property capable of detecting the predetermined physical property described above) For example, using an X-ray sensor, a magnetic sensor, an ultrasonic sensor, a thermography etc.) makes it possible to read this.

  The computer 90 decodes the read pattern 75a to obtain the character code of the alphabetic character "A", and displays the copyright information "A" on the display based on the character code.

  The pattern 35 shown in FIG. 7 is merely an example, and the present invention does not limit the algorithm for patterning the information code. For example, the pattern 35 is barcoded or QR code (registered trademark) It may be a known two-dimensional code such as

  Further, in light of the principle of the present method described above, it can be easily understood that the respective regions constituting the pattern 75a may be formed as hollow regions. In this case, a pattern 75a in which a plurality of hollow regions are arranged is formed inside the object 75, and the pattern can be read by using an ultrasonic sensor, a thermography, or the like.

Sixth Embodiment
A sixth embodiment of the present invention will be described based on FIG. In the present embodiment, the additional data generation unit 20 generates the graphic character 36 (data) of the alphabet character “A” based on the copyright information “A”.

  In the present embodiment, a material having a predetermined physical property different from a material for forming an object (mother body) is prepared, and the 3D printer 60 is set so that the graphic character 36 is formed of the material. As the physical properties mentioned here, optical properties, thermal properties, electrical properties, magnetic properties and mechanical properties can be mentioned.

  The three-dimensional shape data processing unit 40 acquires the three-dimensional shape data 10 for forming a cylindrical object, and then forms the three-dimensional shape data 10 so that the graphic character 36 is formed in a form concealed inside the cylindrical object. Process the

  When the processed data 56 (three-dimensional shape data) processed by the three-dimensional shape data processing unit 40 is input to the 3D printer 60, an object 76 shown in FIG. 8 is obtained. As shown in FIG. 8, according to the present embodiment, a graphic character 76a (entity) formed of a material having physical properties different from those of the material constituting the inside is formed inside the object 76.

  Since the graphic character 76a is formed inside the object 76, its presence can not be confirmed with the naked eye from the outside, but an appropriate sensing device 86 corresponding to the physical property capable of detecting the predetermined physical property described above. This can be read by using (for example, an X-ray sensor, a magnetic sensor, an ultrasonic sensor, a thermography, etc.).

  The computer 90 displays the read graphic character 76a (copyright information "A") on the display.

  Also, in light of the principles of the present method described above, it will be readily understood that the graphic character 76a may be formed as a hollow shape. In this case, the graphic character 76a can be read by using an ultrasonic sensor or the like.

  Although the method of adding the copyright information in a form that can not be read with the naked eye on the surface of the three-dimensional structure has been described above, the legitimate rights holder (creator, product supplier, etc.) uses this method to own the copyright In the case of adding copyright information to the three-dimensional structure (product) according to the present invention, the use of a material having special physical properties can enhance the concealment of information.

  On the other hand, when it is desired that the copyright information be secretly added to the inside of the three-dimensional object to be shaped by the end user side, the copyright information may be added by using a material that is standard mounted on the device of the end user side. Desired. In this regard, there is a method of designating the color attribute of the additional data described above to a color different from that of the matrix, and a method of generating the additional data as hollow shape data, and in any case, the information concealed inside the matrix Can be detected using an X-ray sensor, an ultrasonic sensor or the like.

  Here, in the case where the copyright information is secretly added to the inside of the three-dimensional object to be shaped by the end user, the end user is not aware that the copyright information is added to the end process in the formation process. It is important to In the first embodiment, in particular, characters may be seen during modeling and may be noticed. Hereinafter, in this regard, a method for preventing the user from noticing that the copyright information is added will be described by taking the above-described sixth embodiment as an example.

  In the sixth embodiment described in FIG. 8, the three-dimensional shape data 10 (cylindrical object) and the graphic character 36 are combined in the three-dimensional shape data processing unit 40. At this time, as shown in FIG. When the graphic character 36 is arranged in a cylindrical object with the normal direction of the plane S including the 36 and the planned formation direction (lamination direction) of the 3D printer 60 coinciding, the three-dimensional formed object 76 is formed In the process, the end user notices that the copyright information is added. Therefore, in the present embodiment, arranging the graphic character 36 in the cylindrical object so that the normal direction of the plane S including the graphic character 36 and the modeling direction (stacking direction) do not coincide (that is, 3 It is preferable to process dimensional shape data (eg, as shown in FIG. 8).

  However, in the case where the modeling direction (stacking direction) is indeterminate, the above-described measures can not be taken. In this regard, the alternative of the sixth embodiment solves this problem by converting the graphic characters 36, which are conceptualized as two-dimensional patterns, to three-dimensional patterns.

  Specifically, first, as shown in FIG. 10A, the graphic character 36 is divided into a plurality of elements. Subsequently, the plurality of divided elements are distributed at random (or based on a predetermined rule) in the normal direction of the plane S. The depth in the normal direction in which each element is arranged is discretely defined with the thickness of the layer stacked by the 3D printer 60 in one scan as a reference unit.

  FIG. 10 (b) shows a cross-sectional view along the line B-B ′ of the three-dimensional pattern generated by the above-described procedure. In the example shown in FIG. 10B, the elements are distributed over the depth of six layers, but the depth (number of layers) at which the elements are arranged is as deep as possible for the later sensing. Preferably, layers not containing elements may be sandwiched.

  Here, the additional data generation unit 20 distributes each element of the graphic character 36 with a depth (that is, a depth for six layers) corresponding to the reference numerals (1 to 6) attached in FIG. Consider a case where a pattern (hereinafter, referred to as a dispersed pattern) is generated, and the three-dimensional shape data processing unit 40 arranges the dispersed pattern in a cylindrical object and combines three-dimensional shape data (processed data 56).

  FIG. 11 inputs three-dimensional shape data (processing data 56) synthesized according to the above-described procedure into the 3D printer 60, and forms an object in a state in which the normal direction of the plane S matches the forming direction (lamination direction). The process is shown in time series. In this case, first, an element group to which the reference numeral 1 is attached appears on the modeling surface exposed to the end user, and in the following, each of the elements to which the reference numerals 2 to 3 are attached. Elements will appear. As described above, according to the present embodiment, the elements appearing on the formed surface do not make sense by themselves, and furthermore, by making the size of each element as small as possible to make itself inconspicuous, the end user Can not notice that the copyright information "A" is added to the object that he / she forms.

  On the other hand, the graphic character 36 can be detected by scanning the surface perpendicular to the normal direction of the plane S (that is, the depth direction in which the elements are dispersed) with the sensing device with respect to the dispersed pattern. This can be easily understood by imagining a state in which the six transition diagrams shown in FIG. 11 are superimposed.

  The method for preventing the copyright information from being added is described above by taking the sixth embodiment as an example, but the method described above can be applied to the fifth embodiment as well. Needless to say.

  As mentioned above, although the method for making it aware that the copyright information has been added has been described, finally, the legitimate rights holder (creator, product supplier, etc.) has three-dimensionality concerning his own copyright. Another method for forming a shaped article (product) will be described based on the seventh embodiment.

Seventh Embodiment
A seventh embodiment of the present invention will be described based on FIG. In the present embodiment, the additional data generation unit 20 generates module 3 (38) in which the graphic character of the alphabetic character “A” is embedded based on the copyright information “A”.

  On the other hand, the user instructs the three-dimensional shape data generation unit 45 to combine the module 1 (10a) and module 1 (10b) of the three-dimensional shape data prepared in advance and the module 3 (38). In response to this, the three-dimensional shape data generation unit 45 generates three-dimensional shape data 58 formed by combining the module 1 (10a), the module 1 (10b) and the module 3 (38).

  When the three-dimensional shape data 58 generated by the three-dimensional shape data generation unit 45 is input to the 3D printer 60, an object 78 in which the copyright information "A" is embedded is obtained as shown in FIG.

  That is, the method of the present embodiment assumes a case where a plurality of modules (parts of three-dimensional shape data) are combined to generate object data related to final output. In the present embodiment, the copyright information is used. Are modularized and treated as one part like other parts, to generate object data related to final output. In addition, the aspect shown in FIG. 12 is an illustration to the last, and the method of this embodiment, in short, simultaneously combines three-dimensional shape data for representing copyright information and three-dimensional shape data relating to a mother The content is to generate three-dimensional shape data related to the final product, and it is a method that does not limit the order of generating the respective three-dimensional shape data.

  Although FIG. 12 shows graphic characters as shapes for representing copyright information, shapes for representing copyright information are any of the modes described in the first to sixth embodiments described above. It goes without saying that it is also good.

  As described above, according to the present invention, copyright information can be added as a watermark to a three-dimensional object which is formed based on three-dimensional shape data. The addition of copyright information by the method of the present invention makes it easy to prove copyright infringement related to three-dimensional shape data, and as a result, a psychological barrier to illegal copying occurs, resulting in three-dimensional shape data. Illegal copy is controlled.

  Although the present invention has been described above based on the embodiment in which the copyright information is added to the three-dimensional structure formed by the 3D printer, the method according to the present invention is not limited to the copyright information, but any It is needless to say that the information of can be added to a three-dimensional object formed by the 3D printer. According to the method of the present invention, for example, it becomes possible to add information such as the date of manufacture and price of a product (three-dimensional structure) without impairing the design of the product.

  As mentioned above, although this invention was demonstrated with embodiment, this invention is not limited to embodiment mentioned above, As long as the effect | action and effect of this invention are exhibited within the range of the embodiment which those skilled in the art may think about. , Are included in the scope of the present invention.

  The above-described method of the present invention can be realized by a device executable program described in C, C ++, C #, Java (registered trademark) or the like, and the program of this embodiment is a hard disk device, a CD It can be stored and distributed in a device readable recording medium such as a ROM, an MO, a DVD, a flexible disk, an EEPROM, an EPROM, and can be transmitted via a network in a format that another device can.

DESCRIPTION OF SYMBOLS 10 ... Three-dimensional shape data, 20 ... Additional data generation part, 30 ... Three-dimensional shape data, 32 ... Color pattern, 33 ... Irregular pattern, 34 ... Graphic character, 35 ... Pattern, 36 ... Graphic character, 40 ... Three-dimensional shape Data processing unit, 45: 3D shape data generation unit, 50, 52, 53, 54, 55, 56: processed data, 58: 3D shape data, 60: 3D printer, 70: object, 70a: structure, 72 ... object, 72a ... color pattern, 73 ... object, 73a ... concavo-convex pattern, 74 ... object, 74a ... area, 75 ... object, 75a ... pattern, 76 ... object, 76a ... graphic character, 78 ... object, 80 ... high resolution Camera, 82: Laser irradiator, 83: Infrared camera 85 ... infrared illumination, 86 ... sensing device, 90 ... Computer

Claims (8)

A method for adding desired information to a three-dimensional structure formed by a three-dimensional structure forming apparatus,
Acquiring three-dimensional shape data for forming a desired three-dimensional object;
Processing the three-dimensional shape data so that a shape for representing desired information is added to the three-dimensional structure.
The step of processing the three-dimensional shape data is
Dividing the shape for representing the desired information into a plurality of elements;
Distributedly arranging the plurality of elements in a normal direction of a plane including the shape to generate a three-dimensional pattern;
The three-dimensional pattern, to the inside of the three-dimensional shaped object, processing the three-dimensional shape data as being formed as an internal physical properties and different regions of the three-dimensional shaped object at the location where the physical properties are not formed three-dimensional pattern Including steps,
Method. A method of forming a three-dimensional structure to which desired information is added by using a three-dimensional forming apparatus,
Generating three-dimensional shape data relating to the three-dimensional object using the three-dimensional shape data for expressing desired information so that the desired information is contained in the three-dimensional object which is the final product Including
The step of generating the three-dimensional shape data includes
Acquiring three-dimensional shape source data for forming a desired three-dimensional object;
Dividing the shape for representing the desired information into a plurality of elements;
Distributedly arranging the plurality of elements in a normal direction of a plane including the shape to generate a three-dimensional pattern;
Processing the three-dimensional pattern, the inside of the three-dimensional shaped object, a 3-dimensional shape based on data to be formed as an internal physical properties and different regions of the three-dimensional shaped object at the location where the physical properties are not formed three-dimensional pattern and generating a three-dimensional shape data,
Method.   The method according to claim 1, wherein the shape for representing the desired information is a pattern corresponding to a code of the desired information.   The method according to claim 1, wherein the shape for representing the desired information is a two-dimensional shape representing the desired information.   5. The physical property is at least one physical property selected from the group consisting of optical property, thermal property, electrical property, magnetic property and mechanical property. Method described.   The method according to any one of claims 1 to 4, wherein the region different in physical property from the inside of the three-dimensional structure is formed as a hollow region. The method according to any one of claims 1 to 6 , wherein the desired information is at least one of the three-dimensional shape data and the three-dimensional structure. A computer, a computer executable program for executing the steps of the method according to any one of claims 1-7.