WO2020087962A1 - 彩色3d打印方法、打印装置及终端设备 - Google Patents

彩色3d打印方法、打印装置及终端设备 Download PDF

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Publication number
WO2020087962A1
WO2020087962A1 PCT/CN2019/094481 CN2019094481W WO2020087962A1 WO 2020087962 A1 WO2020087962 A1 WO 2020087962A1 CN 2019094481 W CN2019094481 W CN 2019094481W WO 2020087962 A1 WO2020087962 A1 WO 2020087962A1
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Prior art keywords
data
printing
model
color
image information
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PCT/CN2019/094481
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English (en)
French (fr)
Inventor
向东清
谢林庭
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珠海赛纳三维科技有限公司
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Priority to EP19878884.6A priority Critical patent/EP3875253B1/en
Priority to JP2021523438A priority patent/JP7076047B2/ja
Publication of WO2020087962A1 publication Critical patent/WO2020087962A1/zh
Priority to US17/246,285 priority patent/US20210252790A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/30—Auxiliary operations or equipment
    • B29C64/386—Data acquisition or data processing for additive manufacturing
    • B29C64/393—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/10—Processes of additive manufacturing
    • B29C64/141—Processes of additive manufacturing using only solid materials
    • B29C64/147—Processes of additive manufacturing using only solid materials using sheet material, e.g. laminated object manufacturing [LOM] or laminating sheet material precut to local cross sections of the 3D object
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/0007—Manufacturing coloured articles not otherwise provided for, e.g. by colour change
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y10/00—Processes of additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y50/00—Data acquisition or data processing for additive manufacturing
    • B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
    • 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
    • G06T19/20—Editing of 3D images, e.g. changing shapes or colours, aligning objects or positioning parts
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/46—Colour picture communication systems
    • H04N1/56—Processing of colour picture signals
    • H04N1/60—Colour correction or control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/10—Processes of additive manufacturing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10024—Color image
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2219/00—Indexing scheme for manipulating 3D models or images for computer graphics
    • G06T2219/20—Indexing scheme for editing of 3D models
    • G06T2219/2012—Colour editing, changing, or manipulating; Use of colour codes

Definitions

  • the present application relates to the technical field of image forming apparatuses, and in particular, to a color 3D printing method, a printing apparatus, and a terminal device.
  • 3D (Threee Dimensional, 3D for short) printing is a technology based on three-dimensional model slicing and stacking layer by layer to make 3D objects, which can be used for rapid prototyping or additive manufacturing.
  • the 3D printing technology for making 3D objects includes fused deposition technology (Fused Deposition Modeling, FDM for short), stereolithography (Stereo Lithography Apparatus, SLA for short), and selective laser sintering technology (Selected Laser Sintering, for short) SLS), layered entity technology (Laminated Object Manufacturing, LOM for short) or inkjet printing technology, etc.
  • FDM fused deposition Modeling
  • SLA Stereolithography Apparatus
  • SLS selective laser sintering technology
  • layered entity technology Laminated Object Manufacturing, LOM for short
  • inkjet printing technology etc.
  • the printing system cannot distinguish the background information that does not need to be printed from the color layer and the slice layer that needs to be printed under the color information, which is likely to cause confusion, resulting in no or wrong typing Situation.
  • the present application provides a color 3D printing method, printing device, and terminal device, which can distinguish the background color in the sliced image from the surface color of the three-dimensional original model to avoid non-hit or wrong Hit phenomenon.
  • the present application provides a color 3D printing method, including:
  • the print data includes structural data representing the internal model at the print layer, color data representing the external model at the print layer, and external data. Structural data of the model in the print layer.
  • the structure data representing the internal model at the printing layer is represented in the form of first image information
  • the color data representing the external model at the printing layer is represented in the form of second image information
  • the structure data representing the external model at the printing layer is represented in the third Image information representation.
  • the internal model and the external model are sliced to generate multiple print data corresponding to each print layer, specifically including:
  • the internal model is sliced to generate first image information.
  • printing the object to be printed according to the printing data includes:
  • the structure of the internal model in the printing layer is determined according to the first image information, and the structure of the external model in the printing layer is determined using the third image information.
  • use the printing material to print the structure in the printing layer specifically including:
  • the second image information is used to determine the actual color of the external model in the printing layer, and the printing material of the actual color is used to print the structure of the external model in the printing layer.
  • both the first image information and the third image information are binary image information.
  • the second image information is 8-bit image information, 16-bit image information, 24-bit image information, or 32-bit image information.
  • the method before slicing the internal model and the external model to generate multiple print data corresponding to each print layer, the method further includes:
  • Slice the internal model and external model to generate multiple print data corresponding to each print layer including:
  • the support structure is sliced to generate fourth image information.
  • printing the object to be printed according to the printing data includes:
  • the structure of the internal model in the printing layer is determined according to the first image information
  • the structure of the external model in the printing layer is determined according to the third image information
  • the structure of the support structure in the printing layer is determined according to the fourth image information.
  • the method before printing the object to be printed according to the printing data, the method further includes:
  • Integrating the first image information, the third image information, and the fourth image information to generate fifth image information.
  • Print the object to be printed according to the print data including:
  • the structure of the printing layer is determined according to the second image information and the fifth image information, and the actual color of the external model in the printing layer is determined using the second image information.
  • the structure in the printing layer is printed using the printing material, and the printing material includes the actual color printing material of the external model in the printing layer.
  • the print data includes multiple data units, and the data unit includes structural data representing the internal model at the printing layer, color data representing the external model at the printing layer, and structural data representing the external model at the printing layer.
  • the structural data representing the internal model at the printing layer, the color data representing the external model at the printing layer, and the structural data representing the external model at the printing layer are data from different storage areas, respectively.
  • the structural data of the internal model in the printing layer, the color data and structural data of the external model in the printing layer are stored in the first storage area, the second storage area, and the third storage area, respectively, and the first storage area, The second storage area and the third storage area are arranged in the specified order; or,
  • the structural data representing the internal model in the printing layer, the color data and the structural data of the external model in the printing layer are stored together in the same storage area in the order of their relative positions in the coordinate system.
  • printing the object to be printed according to the printing data includes:
  • printing the object to be printed according to the printing data includes:
  • the internal model and the external model are sliced to generate multiple print data corresponding to each print layer, specifically including:
  • printing the object to be printed according to the printing data includes:
  • the method before slicing the internal model and the external model to generate multiple print data corresponding to each print layer, the method further includes:
  • Slice the internal model and external model to generate multiple print data corresponding to each print layer including:
  • the structure data of the support structure is sequentially stored in the fourth storage area in relative position in the coordinate system or the structure data of the support structure and the structure of the internal model
  • the data, the color data of the external model and the structure data are stored together in the same storage area in order of relative position in the coordinate system.
  • the present application provides a color 3D printing device, including:
  • the obtaining module is used to obtain the three-dimensional original model of the object to be printed.
  • the first processing module is used for shelling the three-dimensional original model to generate an internal model and an external model of the three-dimensional original model.
  • the second processing module is used to slice the internal model and the external model to generate multiple print data corresponding to each print layer.
  • the print data includes structural data indicating that the internal model is on the print layer, and indicates that the external model is printing.
  • the printing module is used for printing the object to be printed according to the printing data.
  • the color 3D printing device further includes a third processing module, configured to acquire the suspended area in the three-dimensional original model, and establish a support structure for filling the suspended area in the suspended area.
  • a third processing module configured to acquire the suspended area in the three-dimensional original model, and establish a support structure for filling the suspended area in the suspended area.
  • the second processing module is also used to slice the supporting structure to generate fourth image information or structural data of the supporting structure.
  • the color 3D printing device further includes a data integration module configured to integrate the first image information, the third image information, and the fourth image information to generate fifth image information.
  • the present application provides a terminal device, including: a memory, a processor, and a computer program stored on the memory and executable on the processor.
  • the processor runs the computer program, the color 3D printing method as described above is implemented.
  • the present application provides a computer-readable storage medium that stores a computer program on the computer-readable storage medium.
  • the computer program is executed by a processor, the color 3D printing method as described above is implemented.
  • the color 3D printing method, printing device and terminal device provided by this application, through shell extraction and slicing processing of the acquired three-dimensional original model of the object to be printed, form a data containing internal model structure data, external model structure data and color data respectively
  • the printing data can be printed by using the above printing data.
  • the color of the object to be printed is consistent with the background color, the background color in the slice image and the surface color of the three-dimensional original model can be distinguished, so as to avoid the phenomenon of non-hit or mis-hit.
  • FIG. 1 is a schematic flowchart of a color 3D printing method according to Embodiment 1 of the present application;
  • FIG. 2 is a schematic structural diagram of a slicing process of a color 3D printing method according to Embodiment 1 of the present application;
  • FIG. 3 is a schematic flowchart of a printing step of the color 3D printing method provided in Embodiment 1 of the present application;
  • FIG. 4 is a schematic flowchart of a color printing part of an internal model and an external model in the printing step of the color 3D printing method provided in Embodiment 1 of the present application;
  • Example 5 is a schematic structural diagram of a three-dimensional original model of a color 3D printing method provided in Example 1 of the present application;
  • FIG. 6 is a structural schematic diagram of forming an external model and an internal model by shelling a three-dimensional original model of a color 3D printing method provided in Example 1 of the present application;
  • FIG. 7 is a schematic structural diagram of a slicing process of an external model and an internal model of a color 3D printing method according to Embodiment 1 of the present application;
  • FIG. 8 is a schematic structural diagram of a first image including first image information in a color 3D printing method according to Embodiment 1 of the present application;
  • FIG. 9 is a schematic structural diagram of a third image including third image information in the color 3D printing method provided in Embodiment 1 of the present application;
  • FIG. 10 is a schematic structural diagram of a second image including second image information in the color 3D printing method provided in Embodiment 1 of the present application;
  • FIG. 11 is a schematic flowchart of a color 3D printing method according to Embodiment 2 of the present application.
  • FIG. 12 is a schematic flowchart of a slicing process step of a color 3D printing method provided in Embodiment 2 of this application;
  • FIG. 13 is a schematic structural diagram of a support structure of a color 3D printing method according to Embodiment 2 of the present application.
  • FIG. 14 is a structural schematic diagram of the slicing process of an external model, an internal model, and a supporting structure of the color 3D printing method provided in Embodiment 2 of the present application;
  • FIG. 16 is a schematic flowchart of the slicing processing steps of the support structure of the color 3D printing method provided in Embodiment 4 of the present application;
  • FIG. 17 is a schematic structural diagram of a color 3D printing apparatus provided in Embodiment 7 of the present application.
  • FIG. 18 is a schematic structural diagram of a terminal device according to Embodiment 8 of the present application.
  • connection should be understood in a broad sense, for example, it can be fixedly connected, or can The media is indirectly connected, which can be the connection between two components or the interaction between the two components.
  • FIG. 1 is a schematic flowchart of a color 3D printing method according to Embodiment 1 of the present application.
  • FIG. 2 is a schematic structural diagram of a slicing process of the color 3D printing method provided in Embodiment 1 of the present application.
  • FIG. 3 is a schematic flowchart of a printing step of the color 3D printing method provided in Embodiment 1 of the present application.
  • 4 is a schematic flowchart of a color printing part of an internal model and an external model in the printing step of the color 3D printing method provided in Embodiment 1 of the present application.
  • FIG. 5 is a schematic structural diagram of a three-dimensional original model of a color 3D printing method provided in Embodiment 1 of the present application.
  • FIG. 1 is a schematic flowchart of a color 3D printing method according to Embodiment 1 of the present application.
  • FIG. 2 is a schematic structural diagram of a slicing process of the color 3D printing method provided in Embodiment
  • FIG. 6 is a structural schematic diagram of forming an external model and an internal model by shelling a three-dimensional original model of a color 3D printing method according to Embodiment 1 of the present application.
  • 7 is a schematic structural diagram of a slicing process of an external model and an internal model of a color 3D printing method according to Embodiment 1 of the present application.
  • FIG. 8 is a schematic structural diagram of a first image including first image information in a color 3D printing method according to Embodiment 1 of the present application.
  • 9 is a schematic structural diagram of a third image including third image information in the color 3D printing method provided in Embodiment 1 of the present application.
  • 10 is a schematic structural diagram of a second image including second image information in the color 3D printing method provided in Embodiment 1 of the present application.
  • inventions of the present application provide a color 3D printing method.
  • the printing method includes the following steps:
  • the method for obtaining the three-dimensional original model 1 of the object to be printed in this embodiment may be to scan the object to be printed using a scanning device, as shown in FIG. 5, the three-dimensional original model 1 shown in the figure is a scan Acquired.
  • the three-dimensional original model 1 After acquiring the three-dimensional original model 1, convert the three-dimensional original model 1 information into a data format that can be recognized by the layered slicing software of the processing terminal, for example, into a stereolithography (STL) format or a polygon file (Polygon) File Format (PLY) format, Virtual Reality Modeling Language (VWRL) format, etc., and then obtain the target object information in the data format that can be recognized by the layered slicing software.
  • STL stereolithography
  • PLY Polygon file
  • VWRL Virtual Reality Modeling Language
  • S2 Shelling the three-dimensional original model to generate the internal model and external model of the three-dimensional original model.
  • shell extraction processing is performed on the acquired three-dimensional original model 1, wherein the shell thickness of the shell extraction processing needs to ensure that the internal model 11 and the external model 12 formed after the shell extraction processing have good mechanical strength
  • the shell wall thickness further needs to ensure good color expression ability of the external model 12, the specific shell wall thickness can be set according to needs, and this embodiment does not set this.
  • the print data includes structural data representing the internal model at the printing layer, color data representing the external model at the printing layer, and structural data representing the external model at the printing layer.
  • the format based on the three-dimensional original model 1 is converted into a data format that can be recognized by the layered slicing software of the processing terminal. Referring to FIG. 7, the layered slicing software is used to slice the internal model 11 and the external model 12, respectively, to generate a bitmap. Image, and then parse each bitmap image to get slice layer data of each layer.
  • the bitmap image is a dot image formed by a combination of multiple pixels
  • the slice layer data is the data information contained in the pixels
  • the color data of each layer is the color data contained in the pixels
  • the structural data of each layer is the pixels Structural data contained within.
  • the structure data representing the internal model at the printing layer is represented in the form of first image information
  • the color data representing the external model at the printing layer is represented in the form of second image information
  • the structure data representing the external model at the printing layer is represented by the first Three image information forms.
  • step S3 it may specifically include the following sub-steps:
  • S31 Slice the internal model to generate first image information.
  • S32 Slicing the external model to generate second image information and third image information.
  • FIG. 8 shows the first image information containing the structural data of the internal model 11 in the print layer
  • FIG. 9 shows the external model 12
  • FIG. 10 shows the second image information containing the color data of the external model 12 in the printing layer. Since the internal model 11 is located inside the three-dimensional original model 1, there is no need to include the inside of the three-dimensional original model 1 for printing color, and the external model 12 includes the surface of the three-dimensional original model 1 for printing color.
  • the first image information and the third image information may be binary image information, that is, the pixels of the image are represented by two numerical values of 0 and 1, and the binary image information is passed through 0 and 1 Two-dimensional matrix representation.
  • the second image information is 8-bit image information, 16-bit image information, 24-bit image information, or 32-bit image information.
  • the specific type of image information can be determined according to the type of color to be printed.
  • the 24-bit image contains the RGB color system. Formed (0-255,0-255,0-255) combined multiple data structures to specify the printing material according to the desired color.
  • the structure data of the first image information represents the print data required by the internal model 11
  • the color data of the second image information represents the print data required by the external model 12
  • the structure data of the third image information represents the print data required by the external model 12.
  • the print data includes the material type and whether to respond to the print job.
  • the first image information of the binary image information includes two data structures of 0 and 1. 0 indicates a background image, does not respond to the print job, and 1 indicates that it responds to the print job and Specify what kind of material to print;
  • the second image information of the 24-bit image contains a variety of data structures formed by RGB, indicating the designated printing material;
  • the third image information of the binary image information contains two data structures of 0 and 1. , 0 means no response to print job, 1 means response to print job.
  • the representation of the data structure contained in the first image information is 1 and the representation of the data structure contained in the third image information is 1.
  • the above-mentioned first image information contains a data structure of 1 indicating that it can respond to a print job and specifies materials for printing
  • the third-image information contains a data structure of 1 indicating that it responds to a print job, but what specific The material is printed and specified by the data structure contained in the second image information.
  • the reason why the second image information indicates that the printed material and the third image information indicates whether to respond to the printing job is that the purpose of this application is to print a full-color model, so the second image information is a full-color representation, and the full-color representation also includes a background image Color (for example, the background image is white, and the model also contains a white part), so simply using the second image information cannot clearly indicate whether to respond to the print job, which will lead to the situation of mistyped or not typed in the background technology;
  • the application adds third image information to indicate whether to respond to the print job, and distinguish the same color as the background image in the second image information, which can effectively avoid the situation of misprinting or non-printing.
  • S4 Print the object to be printed according to the printing data.
  • the following sub-steps may be specifically included:
  • S401 Determine the structure of the internal model in the printing layer according to the first image information, and use the third image information to determine the structure of the external model in the printing layer.
  • S402 Use the printing material to print the structure in the printing layer.
  • the following sub-steps may be specifically included:
  • S4021 Print the structure of the internal model in the printing layer using printing materials of a preset color.
  • S4022 Use the second image information to determine the actual color of the external model in the printing layer, and print the structure of the external model in the printing layer using the printing material of the actual color.
  • the printing material of the preset color is preferably white, and white is used as the base color compared to other colors as the base color, and the color expression of the external model printed in actual colors is fuller and more vivid.
  • FIG. 9 shows the first image information of one slice layer data in FIG. 7 as binary image information, and the background area 13 color is represented as white in the image, corresponding to The data structure is 0, which means that the background part of the image and the external model 12, the structure data of the internal model 11 is shown as a black part 121 in the image, and the corresponding data structure is 1, indicating that the internal model 11 in the image responds to the print job Partial and specified material types.
  • FIG. 9 it shows the third image information of the slice layer data corresponding to FIG. 8 in FIG. 7, which is also binary image information, and the background area 13 color is represented as white in the image, corresponding data
  • the structure is 0.
  • the data with a data structure of 0 in FIG. 8 corresponds to the data in the same position data structure in FIG. 7 as the background area 13 part. Does not respond to the print job part, the data with a data structure of 1 in FIG. 8 corresponds to the data with a data structure of 0 at the same position in FIG.
  • the internal model 9 is the internal model 11, indicating that the print job part is responded and the internal material is specified for printing; the structural data of the external model 12 It is shown as a black part 121 in FIG. 9 and the corresponding data structure is 1, indicating that the external model 12 in the image responds to the print job part.
  • FIG. 10 shows the second image information of the slice layer data corresponding to FIGS. 8 and 9 in FIG. 7, which is a 24-bit image, and the background area 13 color is represented as white in the image, corresponding to
  • the data structure is (255,255,255)
  • the color data of the external model 12 is represented as a white part 122 in the image
  • the corresponding data structure is also (255,255,255), at this time referring to the structural data of the background area part and the external model 12 in FIG. 9,
  • the data with a data structure of 0 in FIG. 9 corresponds to the data with a data structure of (255,255,255) in the same position in FIG. 10 as the background area 13 part, indicating that the print job portion is not responded to.
  • the data whose position data structure is (255,255,255) is the external model 12, which indicates that it responds to the print job part and specifies white material for printing.
  • contour lines shown in FIG. 10 should not exist in the actual image. Here, it is only the image to distinguish the same background color from the model color, and the color on the external model 12 that is different from the background color can be Whether to print or not is determined only by the color data in the second image information, and the role of the third image information is to solve the problem of printing or not when the second image information is the same as the background color.
  • the third image information can be omitted; if the original model is full color, it must exist in one of the colors contained in the original model
  • the type is the same as the background color, and the third image information is the key to distinguish which part of the same color needs to be printed.
  • the third image information and the second image information of the color data. Printing using the print data formed by the above image information can distinguish the background color in the sliced image from the surface color of the three-dimensional original model when the color of the object to be printed is consistent with the background color, so as to avoid the phenomenon of non-hit or mis-hit.
  • FIG. 11 is a schematic flowchart of a color 3D printing method according to Embodiment 2 of the present application.
  • FIG. 12 is a schematic flowchart of the slicing processing steps of the color 3D printing method provided in Embodiment 2 of the present application.
  • 13 is a schematic structural diagram of a support structure of a color 3D printing method provided in Example 2 of the present application.
  • 14 is a schematic structural diagram of a slicing process of an external model, an internal model, and a supporting structure of a color 3D printing method according to Embodiment 2 of the present application.
  • the second embodiment of the present application also provides another color 3D printing method, which can print the suspended area in the three-dimensional original model 1, the specific method can be Yes:
  • S20 Shell the three-dimensional original model to generate an internal model and an external model of the three-dimensional original model.
  • step S40 before performing the step of slicing the internal model and the external model to generate multiple print data corresponding to each print layer, it may further include:
  • the three-dimensional original model of the object to be printed is obtained in S10, the three-dimensional original model is shelled in S20, and the internal model and the external model of the three-dimensional original model are generated, and the internal model and the external model are sliced in S40.
  • a plurality of print data corresponding to each print layer is generated and the processing method for printing the object to be printed according to the print data in S50 is the same as that of S1, S2, S3 and S4 in the first embodiment, which will not be repeated here.
  • the three-dimensional original model 1 is scanned and shelled, the suspended area in the three-dimensional original model 1 can be scanned, and a supporting structure 2 can be established in the suspended area.
  • the establishment method can refer to the existing technology, for example, the support structure generation methods provided by the patent numbers US8818544B2, US6907307B2, CN107727189A, etc., and this application will not make a specific introduction here.
  • the step of slicing the internal model and the external model in S40 to generate multiple print data corresponding to each print layer one by one may specifically include the following sub-steps:
  • S401 Slicing the internal model to generate first image information.
  • S402 Slicing the external model to generate second image information and third image information.
  • S403 Slicing the support structure to generate fourth image information.
  • the processing method of slicing the internal model in S401 to obtain the first image information and slicing the external model in S402 to obtain the second image information and the third image information are respectively the same as S31 and S32 in the embodiment , I will not repeat them one by one here.
  • the support structure 2 is generated for the three-dimensional original model 1, the support structure 2 is sliced simultaneously with the internal model 11 and the external model 12 as a whole.
  • slice layer data represented by a plurality of lattice images is generated.
  • the dot image generated by the support structure 2 is the support structure data, and is limited to the fourth image information in the embodiment of the present application.
  • the slice layer data may further include the first image information, the second image information, and the third image information.
  • the data structure is as described above, and details are not described herein.
  • the printing of the object to be printed according to the printing data may specifically include the following sub-steps:
  • S511 Determine the structure of the internal model in the printing layer according to the first image information, determine the structure of the external model in the printing layer using the third image information, and determine the structure of the support structure in the printing layer according to the fourth image information.
  • S512 Use the printing material to print the structure in the printing layer.
  • the fourth image information included in the print data is used to represent the structural data of the support structure 2.
  • the fourth image information is preferably binary image information.
  • the structure data of the fourth image information indicates the printing information required by the support structure 2.
  • the printing information includes the material type and whether to respond to the printing job.
  • the fourth image of the binary image information includes two data structures of 0 and 1, and 0 indicates Background image, does not respond to the print job, 1 means respond to the print job and designate the printing by the support material.
  • first image information containing internal model structure data and external model structure data respectively are formed.
  • the third image information and the second image information of the color data, and the fourth image information containing the structural data of the support structure is formed by establishing the support structure in the suspended area of the three-dimensional original model.
  • Printing using the print data formed by the above image information can distinguish the background color in the sliced image from the surface color of the three-dimensional original model when the color of the object to be printed is consistent with the background color, so as to avoid the phenomenon of non-hit or mis-hit.
  • Embodiment 3 of the present application further provides another color 3D printing method, which can integrate the first image information, the third image information, and the fourth image information.
  • the method may further include:
  • Integrating the first image information, the third image information, and the fourth image information to generate fifth image information.
  • the data storage amounts of the first image information, the third image information, and the fourth image information of the binary image information in Embodiment 1 and Embodiment 2 are all 1 bit, and the second image information of the 24-bit image
  • the data storage capacity is 24 bits, and the total data storage capacity is 27 bits.
  • the data processing method provided in the embodiments of the present application further includes integration processing.
  • the data integration processing method reference may be made to existing technologies, for example, the patent number is CN103605715B and CN105183824A, this embodiment will not repeat them here.
  • the integrated fifth image information includes first image information, third image information, and fourth image information.
  • the fifth image information may be a four-value image, including four data structures of 00, 01, 10, and 11, respectively. Different representations are given to the four data structures. For example, 00 can be used for non-responsive printing of background images, 01 can be used for internal model response printing and specified materials can be printed, and 10 can be used for external model response printing. This kind of material is designated by the data in the second image information, and 11 indicates that the supporting structure responds to the printing job and designates the supporting material for printing.
  • the data storage capacity of the fifth image of the quaternary image is 2bit
  • the data storage capacity of the second image combined with the 24-bit image is 24bit
  • the total data storage capacity is 26bit. Compared with before the integration processing, the slice layer is effectively reduced The amount of data storage for the data.
  • the structure of the printing layer is determined according to the second image information and the fifth image information, and the actual color of the external model in the printing layer is determined using the second image information.
  • the printing material includes the actual color of the external model in the printing layer.
  • the print data includes second image information and fifth image information, where the fifth image information includes internal model, external model, and structural data of the supporting structure to determine Whether the above three structures respond to the print job during the printing process.
  • the second image information determines the specific color information of the printing material used by the external model in response to the printing job.
  • the printing material may include multiple colors, and at least one of the multiple colors should correspond to the color of the printing material required by the external model.
  • first image information containing internal model structure data and external model structure data, respectively, are formed.
  • the third image information and the second image information of the color data, and the fourth image information containing the structural data of the support structure is formed by establishing the support structure in the suspended area of the three-dimensional original model.
  • the fourth embodiment of the present application further provides another color 3D printing method.
  • the fourth embodiment is compared with the first and second embodiments. The difference is that the print data includes multiple data units, and each data unit includes different types of data.
  • the 3D color printing method provided in this embodiment includes:
  • S62 Shelling the three-dimensional original model to generate an internal model and an external model of the three-dimensional original model.
  • S63 Slicing the internal model and the external model to generate multiple print data corresponding to each print layer, the print data includes multiple data units, and the data unit includes structural data representing the internal model at the print layer, indicating external The color data of the model on the printing layer and the structure data representing the external model on the printing layer.
  • the internal model and the external model are sliced to generate multiple print data corresponding to each print layer, including: slicing the internal model to generate structural data of the internal model; slicing the external model To generate structural data and color data of external models.
  • Print the object to be printed according to the printing data including: using the printing material of the preset color and printing the structure of the internal model in the printing layer according to the structural data of the internal model; using the color data of the external model to determine the external model in the printing layer The actual color in the actual color, and print the structure of the external model in the printing layer according to the structural data of the external model using the printed material of the actual color.
  • the internal model and the external model are sliced, which is different from Embodiment 1 to Embodiment 3.
  • a bitmap image is not generated during slicing, but printing is generated based on the data on the internal model and the external model.
  • the data is stored directly in the data storage area.
  • the print data includes multiple data units, and the data unit includes color data and structural data, specifically including color data and structural data of the external model of the print layer, and structural data of the internal model.
  • the method further includes:
  • Step S71 Obtain the suspended area in the three-dimensional original model, and establish a support structure for filling the suspended area in the suspended area.
  • Slice the internal model and external model to generate multiple print data corresponding to each print layer including:
  • Step S72 Slicing the supporting structure to generate structural data of the supporting structure in the printing layer.
  • the structural data of the internal model, the color data of the external model, the structural data of the external model, and the structural data of the supporting structure are respectively the same as the structural data of the first image information and the second image in the first and second embodiments.
  • the color data of the information, the structure data of the third image information, and the structure data of the fourth image information are consistent, or are respectively consistent with the structure data of the internal model of the fifth image information in the third embodiment, and the color data of the second image information
  • the structural data of the external model of the fifth image information is consistent with the structural data of the support structure of the fifth image information.
  • the structure data of the third image information is used to distinguish the same color as the background image in the second image information.
  • the structure data of the external model in the data unit is used to distinguish the same color as the external model.
  • the structure data representing the internal model at the printing layer, the color data representing the external model at the printing layer, and the structure data representing the external model at the printing layer in the data unit are data from different storage areas, respectively.
  • the structural data representing the internal model in the printing layer is sequentially stored in the first storage area in a relative position in the coordinate system
  • the color data representing the external model in the printing layer is sequentially stored in the first position in the relative position in the coordinate system.
  • the structural data representing the external model in the printing layer is sequentially stored in the third storage area in relative position in the coordinate system
  • the structural data of the supporting structure is sequentially stored in the storage area in relative position in the coordinate system
  • the fourth storage area is sequentially stored in the first storage area in a relative position in the coordinate system.
  • the method further specifically includes: acquiring print data in the first storage area, the second storage area, the third storage area, and the fourth storage area respectively according to a preset storage order, and according to the acquisition The printing data from different storage areas are to be printed on the object to be printed.
  • first storage area, the second storage area, the third storage area, and the fourth storage area in this embodiment do not necessarily indicate the order of one, two, three, and four, but are used to distinguish Different storage areas, the specific order may be first, second, third, fourth; or, may be second, third, fourth, first; or, may be third, first, second , Fourth; or other arrangement order.
  • the data storage order in the data unit is consistent with the arrangement order of the different storage areas.
  • the structural data of the internal model is sequentially stored in the first storage area in relative position in the coordinate system
  • the color data of the external model is sequentially stored in the second storage area in relative position in the coordinate system.
  • the structural data of is sequentially stored in the third storage area in relative position in the coordinate system
  • the structural data of the supporting structure is sequentially stored in the fourth storage area in relative position in the coordinate system.
  • the first storage area, the second storage area, the third storage area, and the fourth storage area are arranged in order, and the internal model structure data of the first storage area and the external model color of the second storage area are respectively extracted during printing
  • the data, the external model structure data of the third storage area, and the support structure data of the fourth storage area form a data unit, and print according to the data unit.
  • a data unit can be (0,255,255,255,0,0), where the first value 0 is the binary value of the structural data of the internal model, indicating a non-internal model, stored in the first storage area, second, third, and fourth Values (255,255,255) are color data RGB values, representing white, stored in the second storage area, the fifth value 0 is the structural data of the external model, indicating a non-external model, stored in the third storage area, the sixth value 0 is the structural data of the supporting structure, which represents the unsupported structure, and is stored in the fourth storage area.
  • a data unit can be ( 0,255,255,255,1,0), where the first value 0 is the binary value of the structural data of the internal model, indicating a non-internal model, stored in the first storage area, and the second, third, and fourth values (255,255,255) are color data RGB value, representing white, stored in the second storage area, the fifth value 1 is the structural data of the external model, indicating the external model, stored in the third storage area ,
  • the sixth data structure a value of 0 to the support structure, the support structure showing non-stored in the fourth storage area, the data unit is represented by different data analysis unit may determine that the data represented by external model.
  • the structural data including the internal model, the external model structure data and the color data are formed, and / or Or the data unit of the structural data of the supporting structure.
  • Printing using the print data in the data unit can distinguish the background color in the slice image from the surface color of the three-dimensional original model when the color of the object to be printed is consistent with the background color, to avoid the phenomenon of non-hit or mishit.
  • the fifth embodiment of the present application also provides another color 3D printing method.
  • the fifth embodiment is different in that: the structure data of the internal model in the fifth embodiment, The color data of the external model, the structural data of the external model, and the structural data of the supporting structure are separately stored in different storage areas.
  • the structural data of the internal model is stored in the first storage area
  • the color data of the external model is stored in the second storage area
  • the structural data of the external model is stored in the third storage area
  • the structural data of the supporting structure is stored in the first Among the four storage areas, the first storage area, the second storage area, the third storage area, and the fourth storage area have no designated arrangement order.
  • the storage order of data in the data unit can be changed, for example, taking the data unit (0,255,255,255,1,0) as an example, where the first value 0 is the binary value of the structure data of the internal model, indicating a non-internal model , Stored in the first storage area, the second, third, and fourth values (255,255,255) are color data RGB values, representing white, stored in the second storage area, and the fifth value 1 is the structural data of the external model, indicating The external model is stored in the third storage area.
  • the sixth value of 0 is the structural data of the supporting structure, which represents the unsupported structure. It is stored in the fourth storage area.
  • the data unit is represented as an external model.
  • the data unit representing the external model in this embodiment may also be (1,255,255,255,0,0), where the first value 1 is the binary value of the structural data of the external model, which represents the external model and is stored in the third storage area,
  • the second, third, and fourth values are color data RGB values, representing white, and stored in the second storage area, and the fifth value 0 is non-internal model structural data, indicating non-internal model, stored in the first In the storage area, the sixth value 0 is the structural data of the supporting structure, indicating that the non-supporting structure is stored in the fourth storage area.
  • the structural data including the internal model, the external model structure data and the color data are formed, and / or Or the data unit of the structural data of the supporting structure.
  • Printing using the print data in the data unit can distinguish the background color in the slice image from the surface color of the three-dimensional original model when the color of the object to be printed is consistent with the background color, to avoid the phenomenon of non-hit or mishit.
  • Embodiment 6 of the present application also provides another color 3D printing method.
  • Embodiment 6 is different from Embodiment 4 in that the storage area is not divided in this Embodiment 6 and the internal
  • the structural data of the model, the color data of the external model, the structural data of the external model and the structural data of the supporting structure are stored in the same storage area.
  • the data unit includes color data and structural data of the external model of the printing layer, structural data of the internal model, and structural data of the supporting structure.
  • the data in a single data unit may be stored in a specified order.
  • the color data and structural data of the external model, the structural data of the internal model, and the structural data of the supporting structure are sequentially stored in the same storage area with relative positions in the coordinate system.
  • the data unit includes the RGB data of the external model, the binary value of the structural data of the external model, the binary value of the structural data of the internal model, and the binary value of the structural data of the supporting structure.
  • a data unit can be (255,255,255,0, 0,0), where the first three values (255,255,255) are the RGB values of the color data, representing white, and the fourth value 0 is the binary value of the structural data of the external model, representing the non-external model, combined with the RGB data of the color data, the data unit The color data represents the background color, the fifth value 0 is the structural data of the internal model, indicating the non-internal model, the sixth value 0 is the structural data of the supporting structure, indicating the non-supporting structure, by analyzing the different data in the data unit Indicates that the data unit can be expressed as the background color; for another example, a data unit can be (255,255,255,1,0,0), where the first three values (255,255,255) are the
  • the sixth value 0 is the structural data of the supporting structure and represents the non-supporting structure.
  • a data unit can be (a, b, c, 0, 1,0), where the first three values (a, b, c) are the RGB color data of the external model, and the fourth value 0 is the external model's
  • the structure data binary value expressed as a non-external model
  • the fifth value 1 is the structural data of the internal model, indicating the internal model
  • the sixth value 0 is the structural data of the supporting structure, indicating the non-supporting structure, by analyzing the data unit
  • Different data representations it can be determined that the data unit is represented as an internal model; for another example, a data unit can be (a, b, c, 0, 0, 1), where the first three values (a, b, c) are external
  • the fourth value 0 is the binary value of the structural data
  • the structural data of the external model the structural data of the internal model, and the structural data of the supporting structure of the data unit of the above embodiment, only one of them is true or all three are false. When one of them is true, the data unit indicates the correspondence. If the external model or internal model or support structure is true, the data unit represents the background color when all three are false.
  • the structural data of the internal model in the data unit (a, b, c, 0,1,0) is true, and the value of (a, b, c) is meaningless because the structural data of the external model Is false, the data unit is represented as a non-external model, and the structural data of the supporting structure is false, so the data unit is represented as an internal model.
  • the data unit (a, b, c, 0, 0, 1) is the same, when one of the structural data of the internal model and the structural data of the supporting structure is true, the value (a, b, c) can be preset Arbitrary RGB value. Therefore, when printing according to the data unit, priority is given to judging the authenticity of the structural data of the external model, the structural data of the internal model, and the structural data of the supporting structure, and determining whether the data unit represents the external model or the internal model or the supporting structure or Background color. When the data unit represents an external model, the color data of the external model is analyzed to determine the color of the external model.
  • the print data may be stored in segments in the above implementations of this embodiment, and dynamically managed to facilitate storage and extraction of data.
  • the method of distinguishing the color and background image of the external model in this embodiment is similar to that in the foregoing embodiments one to three, all of which are distinguished by combining the structural data of the external model with the color data of the external model.
  • the sliced data is directly stored in the storage space.
  • the structural data including the internal model, the external model structural data and the color data are formed, and / or Or the data unit of the structural data of the supporting structure.
  • Printing using the print data in the above data unit can distinguish the background color in the sliced image from the surface color of the three-dimensional original model when the color of the object to be printed is consistent with the background color, to avoid the phenomenon of non-hit or mishit.
  • Embodiment 7 of the present application is a schematic structural diagram of a color 3D printing apparatus provided in Embodiment 7 of the present application. Referring to FIG. 17, on the basis of the foregoing Embodiments 1 to 6, Embodiment 7 of the present application further provides a color 3D printing device 20, including:
  • the obtaining module 21 is used to obtain a three-dimensional original model of the object to be printed.
  • the acquisition model can be achieved by scanning the object to be printed when acquiring the three-dimensional original model.
  • the scanned three-dimensional original model information can be format converted to generate a data format that can be recognized by the layered slicing software to prepare for the slicing process .
  • the first processing module 22 is used for shelling the three-dimensional original model to generate an internal model and an external model of the three-dimensional original model.
  • the color 3D printing device 20 provided in this embodiment prints the internal structure and external structure of the three-dimensional original model separately, and finally obtains a complete printed product of the object to be printed.
  • the wall thickness of the shell in the shelling process can be set according to needs, and the wall thickness of the shell needs to ensure that the internal model and the external model formed by the shelling process have good mechanical strength.
  • the second processing module 23 is used for slicing the internal model and the external model to generate multiple print data corresponding to each print layer one by one.
  • the print data includes structural data indicating that the internal model is in the print layer, indicating that the external model is in The color data of the printing layer and the structure data representing the external model in the printing layer.
  • the print data includes first image information for representing the structure data of the internal model at the printing layer, second image information for representing the color data of the external model at the printing layer, and first Three image information.
  • the first image information provided in this embodiment may determine whether to respond to the printing job when the internal model is printed, thereby determining whether to print the internal model.
  • the third image information can determine whether the external model responds to the printing job when printing, so as to determine whether to print the external model, and at the same time based on the external model has a color, so in order to avoid the color of the external model is consistent with the background color caused by wrong or not Problem, this embodiment further sets the second image information containing the color of the external model.
  • the third image information determines that the external model prints, the color of the printing material of the external model is determined by the second image information, so it can effectively avoid the external
  • the color of the model is the same as the background color, it may happen that it is mistyped or not.
  • the color 3D printing apparatus 20 may further include a third processing module 24 and a data integration module 25.
  • the third processing module 24 is used to obtain the suspended area in the three-dimensional original model 1, and to establish the support structure 2 for filling the suspended area in the suspended area.
  • the second processing module 23 is also used to slice the support structure 2 to generate fourth image information.
  • the dangling area may also be printed during the printing process.
  • the suspended area of the three-dimensional original model 1 can be scanned, and a supporting structure 2 filled with the suspended area can be established in the suspended area.
  • the establishment method of the supporting structure 2 can be referred to In the prior art, this embodiment will not repeat them here.
  • the three-dimensional original model 1 including the support structure 2 is established, and the second processing module 23 can perform the same slicing process on the support structure 2 to obtain the fourth image information including the structure data of the support structure 2.
  • the data integration module 25 in the color 3D printing device 20 is used to integrate the first image information, the second image information, and the fourth image information to generate fifth image information.
  • the printing module 26 is used for printing the object to be printed according to the printing data.
  • the printing module provided in this embodiment can print multiple printing layers layer by layer, so as to obtain a complete printed product.
  • the second processing module 23 is used to slice the internal model and the external model to generate a plurality of print data corresponding to each print layer.
  • the print data includes multiple data units as an example.
  • the print data includes multiple data units.
  • the data unit includes structural data representing the internal model at the printing layer, color data representing the external model at the printing layer, and structural data representing the external model at the printing layer.
  • the structure data representing the internal model at the printing layer, the color data representing the external model at the printing layer, and the structure data representing the external model at the printing layer are data from different storage areas, respectively.
  • the structural data representing the internal model in the printing layer is sequentially stored in the first storage area in a relative position in the coordinate system
  • the color data representing the external model in the printing layer is sequentially stored in the first position in the relative position in the coordinate system.
  • the structural data representing the external model in the printing layer is sequentially stored in the third storage area in relative position in the coordinate system
  • the structural data of the supporting structure is sequentially stored in the storage area in relative position in the coordinate system
  • the fourth storage area is sequentially stored in the first storage area in a relative position in the coordinate system.
  • print data in the first storage area, the second storage area, the third storage area, and the fourth storage area are respectively obtained according to a preset storage order, and according to the acquired print data from different storage areas Print the object to be printed.
  • first storage area, the second storage area, the third storage area, and the fourth storage area in this embodiment do not necessarily indicate the order of one, two, three, and four, but are used to distinguish Different storage areas, the specific order may be first, second, third, fourth; or, may be second, third, fourth, first; or, may be third, first, second , Fourth; or other arrangement order.
  • the data storage order in the data unit is consistent with the arrangement order of the different storage areas.
  • the structural data of the internal model is sequentially stored in the first storage area in relative position in the coordinate system
  • the color data of the external model is sequentially stored in the second storage area in relative position in the coordinate system.
  • the structural data of is sequentially stored in the third storage area in relative position in the coordinate system
  • the structural data of the supporting structure is sequentially stored in the fourth storage area in relative position in the coordinate system.
  • the first storage area, the second storage area, the third storage area, and the fourth storage area are arranged in order, and the internal model structure data of the first storage area and the external model color of the second storage area are respectively extracted during printing
  • the data, the external model structure data of the third storage area, and the support structure data of the fourth storage area form a data unit, and print according to the data unit.
  • the print data includes multiple data units, the internal model
  • the structural data, the color data of the external model, the structural data of the external model and the structural data of the supporting structure are separately stored in different storage areas as an example for description.
  • the structural data of the internal model is stored in the first storage area
  • the color data of the external model is stored in the second storage area
  • the structural data of the external model is stored in the third storage area
  • the structural data of the supporting structure is stored in the first Among the four storage areas
  • the first storage area, the second storage area, the third storage area, and the fourth storage area have no designated arrangement order.
  • the data storage order in the data unit can be changed.
  • dynamic management can be implemented to facilitate storage and extraction of data.
  • the print data includes multiple data units, the internal model
  • the structural data, the color data of the external model, the structural data of the external model and the structural data of the supporting structure are stored in the same storage area as an example for description.
  • the data unit includes color data and structural data of the external model of the printing layer, structural data of the internal model, and structural data of the supporting structure.
  • the data in a single data unit may be stored in a specified order.
  • the color data and structural data of the external model, the structural data of the internal model, and the structural data of the supporting structure are sequentially stored in the same storage area with relative positions in the coordinate system.
  • the color 3D printing device provided in Embodiment 7 of the present application performs shell extraction processing and slicing processing on the acquired three-dimensional original model of the object to be printed to form print data respectively including internal model structure data, external model structure data and color data. Printing with the above print data can distinguish the background color in the sliced image from the surface color of the three-dimensional original model when the color of the object to be printed is consistent with the background color to avoid the phenomenon of non-hit or mishit.
  • Embodiment 8 of the present application is a schematic structural diagram of a terminal device provided by Embodiment 8 of the present application. Referring to FIG. 18, on the basis of the foregoing Embodiments 1 to 6, Embodiment 8 of the present application further provides a terminal device 30, including: a memory 31. A processor 32 and a computer program stored on the memory 31 and executable on the processor 32. When the processor 32 runs the computer program, the color 3D printing method as described above is implemented.
  • the processor 32 calls the computer program stored on the memory 31, thereby completing the color 3D printing method in the computer program.
  • the memory 31 may include, but is not limited to: random access memory (random access memory, RAM), flash memory, read-only memory (Read-Only Memory, ROM), erasable programmable read-only memory (Erasable Programmable Read Only Memory, EPROM ) Memory, hard disk, or any other form of storage medium known in the art.
  • the processor 32 whose hardware may be a general-purpose processor capable of realizing specific functions, a digital signal processor (Digital Signal Processing, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), and a field programmable gate array (Field-Programmable Gate (Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components or a combination of these hardware.
  • DSP Digital Signal Processing
  • ASIC Application Specific Integrated Circuit
  • FPGA Field-Programmable Gate
  • it can also be realized by a combination of computing devices, for example, a combination of a DSP and a microprocessor, a combination of multiple microprocessors, a combination of one or more microprocessors combined with DSP communication, and so on.
  • the memory 31 may be integrated with the processor 32, and the memory 31 may be set as an integral part of the processor 32, or the memory 31 and the processor 32 may both be installed in an application specific integrated circuit (ASIC )on.
  • ASIC application specific integrated circuit
  • the terminal device provided in Embodiment 8 of the present application performs shell extraction processing and slicing processing on the acquired three-dimensional original model of the object to be printed to form print data respectively including internal model structure data, and printing including external model structure data and color data data.
  • Printing with the above print data can distinguish the background color in the sliced image from the surface color of the three-dimensional original model when the color of the object to be printed is consistent with the background color to avoid the phenomenon of non-hit or mishit.
  • Embodiment 9 of the present application provides a computer-readable storage medium. Specifically, a computer program is stored on the computer-readable storage medium, and when the computer program is executed by the processor, the color 3D printing method as described above is implemented.
  • the computer-readable storage medium may be a hard disk, a U disk, an optical disk, or other devices with storage space.
  • the computer-readable storage medium provided in Embodiment 9 of the present application through shell extraction processing and slicing processing of the acquired three-dimensional original model of the object to be printed, forms print data respectively containing internal model structure data, including external model structure data and color Print data of the data. Printing using the print data formed by the above image information can distinguish the background color in the sliced image from the surface color of the three-dimensional original model when the color of the object to be printed is consistent with the background color, so as to avoid the phenomenon of non-hit or mis-hit.

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Abstract

一种彩色3D打印方法、打印装置及终端设备。该打印方法包括获取待打印物体的三维原始模型；对三维原始模型进行抽壳处理，生成三维原始模型的内部模型和外部模型；对内部模型和外部模型进行切片处理，生成与每个打印层一一对应的多个打印数据，打印数据包括表示内部模型在打印层的结构数据，表示外部模型在打印层的颜色数据以及表示外部模型在打印层的结构数据；根据打印数据对待打印物体进行打印。其能够区别切片图像中的背景颜色和三维原始模型的表面颜色，避免发生不打或错打的现象。

Description

彩色3D打印方法、打印装置及终端设备
本申请要求于2018年11月02日提交中国专利局、申请号为CN201811302632.8、申请名称为“彩色3D打印方法、打印装置及终端设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及图像形成装置技术领域，尤其涉及一种彩色3D打印方法、打印装置及终端设备。
背景技术
3D(Three Dimensional，简称3D)打印是基于三维模型切片后逐层加工堆积起来，以制作3D物体的技术，可以用于快速成型制造或加式制造。
现有技术中，制作3D物体的3D打印技术包括了熔融沉积技术(Fused Deposition Modeling，简称FDM)、立体光刻技术(Stereo Lithography Apparatus，简称SLA)、选择性激光烧结技术(Selected Laser Sintering，简称SLS)、分层实体技术(Laminated Object Manufacturing，简称LOM)或喷墨打印技术等。当打印的3D模型为全彩色的时候，需要对3D模型的颜色信息进行辨别，并根据模型的颜色信息打印与其相对应颜色的物体。
然而当打印过程的切片层与该切片层的背景图像的颜色一致时，打印系统无法分辨该颜色信息下的无需打印的背景信息和需打印的切片层，容易造成混乱，导致不打或错打的情况发生。
发明内容
为了解决背景技术中提到的至少一个问题，本申请提供一种彩色3D打印方法、打印装置及终端设备，能够区别切片图像中的背景颜色和三维原始模型的表面颜色，避免发生不打或错打的现象。
为了实现上述目的，第一方面，本申请提供一种彩色3D打印方法， 包括：
获取待打印物体的三维原始模型。
对三维原始模型进行抽壳处理，生成三维原始模型的内部模型和外部模型。
对内部模型和外部模型进行切片处理，生成与每个打印层一一对应的多个打印数据，打印数据包括表示内部模型在打印层的结构数据，表示外部模型在打印层的颜色数据以及表示外部模型在打印层的结构数据。
根据打印数据对待打印物体进行打印。
可选的，表示内部模型在打印层的结构数据以第一图像信息形式表示，表示外部模型在打印层的颜色数据以第二图像信息形式表示以及表示外部模型在打印层的结构数据以第三图像信息形式表示。
可选的，对内部模型和外部模型进行切片处理，生成与每个打印层一一对应的多个打印数据，具体包括：
对内部模型进行切片处理，生成第一图像信息。
对外部模型进行切片处理，生成第二图像信息和第三图像信息。
可选的，根据打印数据对待打印物体进行打印，具体包括：
根据第一图像信息确定内部模型在打印层中的结构，并利用第三图像信息确定外部模型在打印层中的结构。
利用打印材料对打印层中的结构进行打印。
可选的，利用打印材料对打印层中的结构进行打印，具体包括：
利用预设颜色的打印材料对内部模型在打印层中的结构进行打印。
利用第二图像信息确定外部模型在打印层中的实际颜色，并利用实际颜色的打印材料对外部模型在打印层中的结构进行打印。
可选的，第一图像信息和第三图像信息均为二值图像信息。
可选的，第二图像信息为8位图像信息、16位图像信息、24位图像信息或32位图像信息。
可选的，对内部模型和外部模型进行切片处理，生成与每个打印层一一对应的多个打印数据之前，还包括：
获取三维原始模型内的悬空区域，在悬空区域内建立用于填充悬空区域的支撑结构。
对内部模型和外部模型进行切片处理，生成与每个打印层一一对应的多个打印数据，具体还包括：
对支撑结构进行切片处理，生成第四图像信息。
可选的，根据打印数据对待打印物体进行打印，具体包括：
根据第一图像信息确定内部模型在打印层中的结构，根据第三图像信息确定外部模型在打印层中的结构，根据第四图像信息确定支撑结构在打印层中的结构。
利用打印材料对打印层中的结构进行打印。
可选的，在根据打印数据对待打印物体进行打印之前，还包括：
对第一图像信息、第三图像信息和第四图像信息进行整合处理，生成第五图像信息。
根据打印数据对待打印物体进行打印，具体包括：
根据第二图像信息和第五图像信息确定打印层的结构，并利用第二图像信息确定外部模型在打印层中的实际颜色。
利用打印材料对打印层中的结构进行打印，打印材料包括外部模型在打印层中的实际颜色的打印材料。
可选的，打印数据包括多个数据单元，数据单元包括表示内部模型在打印层的结构数据，表示外部模型在打印层的颜色数据以及表示外部模型在打印层的结构数据。
可选的，表示内部模型在打印层的结构数据、表示外部模型在打印层的颜色数据以及表示外部模型在打印层的结构数据分别是来自不同存储区域中的数据。
可选的，表示内部模型在打印层的结构数据、外部模型在打印层的颜色数据和结构数据分别存储在第一存储区域、第二存储区域和第三存储区域中，且第一存储区域、第二存储区域和第三存储区域按指定顺序排列；或者，
表示内部模型在打印层的结构数据、外部模型在打印层的颜色数据和结构数据分别存储在第一存储区域、第二存储区域和第三存储区域中，且第一存储区域、第二存储区域和第三存储区域之间彼此相互独立。
可选的，表示内部模型在打印层的结构数据、外部模型在打印层的颜 色数据和结构数据以在坐标系统中的相对位置顺序共同存储在同一个存储区域中。
可选的，根据打印数据对待打印物体进行打印，具体包括：
根据预设存储顺序分别获取第一存储区域、第二存储区域以及第三存储区域中的打印数据，根据获取的来自不同存储区域中的打印数据对待打印物体进行打印。
可选的，根据打印数据对待打印物体进行打印，具体包括：
根据同一个存储区域中预设存储顺序分别获取每个数据单元中的打印数据，根据不同数据单元中的打印数据对待打印物体进行打印。
可选的，对内部模型和外部模型进行切片处理，生成与每个打印层一一对应的多个打印数据，具体包括：
对内部模型进行切片处理，生成内部模型的结构数据。
对外部模型进行切片处理，生成外部模型的结构数据和颜色数据。
可选的，根据打印数据对待打印物体进行打印，具体包括：
利用预设颜色的打印材料且根据内部模型的结构数据对内部模型在打印层中的结构进行打印。
利用外部模型的颜色数据确定外部模型在打印层中的实际颜色，并利用实际颜色的打印材料且根据外部模型的结构数据对外部模型在打印层中的结构进行打印。
可选的，对内部模型和外部模型进行切片处理，生成与每个打印层一一对应的多个打印数据之前，还包括：
获取三维原始模型内的悬空区域，在悬空区域内建立用于填充悬空区域的支撑结构。
对内部模型和外部模型进行切片处理，生成与每个打印层一一对应的多个打印数据，具体还包括：
对支撑结构进行切片处理，生成支撑结构在打印层中的结构数据，支撑结构的结构数据以在坐标系统中的相对位置顺序存储在第四存储区域中或者支撑结构的结构数据与内部模型的结构数据、外部模型的颜色数据和结构数据以在坐标系统中的相对位置顺序共同存储在同一个存储区域中。
第二方面，本申请提供一种彩色3D打印装置，包括：
获取模块，用于获取待打印物体的三维原始模型。
第一处理模块，用于对三维原始模型进行抽壳处理，生成三维原始模型的内部模型和外部模型。
第二处理模块，用于对内部模型和外部模型进行切片处理，生成与每个打印层一一对应的多个打印数据，打印数据包括表示内部模型在打印层的结构数据，表示外部模型在打印层的颜色数据以及表示外部模型在打印层的结构数据。
打印模块，用于根据打印数据对待打印物体进行打印。
可选的，该彩色3D打印装置还包括第三处理模块，用于获取三维原始模型内的悬空区域，并在悬空区域内建立用于填充悬空区域的支撑结构。
第二处理模块，还用于对支撑结构进行切片处理，生成第四图像信息或支撑结构的结构数据。
可选的，该彩色3D打印装置还包括数据整合模块，用于对第一图像信息、第三图像信息和第四图像信息进行整合处理，生成第五图像信息。
第三方面，本申请提供一种终端设备，包括：存储器、处理器以及存储在存储器上并可在处理器上运行的计算机程序，处理器运行计算机程序时实现如上述的彩色3D打印方法。
第四方面，本申请提供一种计算机可读存储介质，计算机可读存储介质上存储有计算机程序，计算机程序被处理器执行时实现如上述的彩色3D打印方法。
本申请提供的彩色3D打印方法、打印装置及终端设备，通过对获取的待打印物体的三维原始模型进行抽壳处理和切片处理，形成分别包含内部模型结构数据、外部模型结构数据和颜色数据的打印数据，利用上述打印数据进行打印，能够在待打印物体的颜色与背景颜色一致时，区别切片图像中的背景颜色和三维原始模型的表面颜色，避免发生不打或错打的现象。
本申请的构造以及它的其他发明目的及有益效果将会通过结合附图而对优选实施例的描述而更加明显易懂。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作以简单地介绍，显而易见地，下面描述中的附图是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请实施例一提供的彩色3D打印方法的流程示意图；
图2为本申请实施例一提供的彩色3D打印方法的切片处理步骤的流程构示意图；
图3为本申请实施例一提供的彩色3D打印方法的打印步骤的流程示意图；
图4为本申请实施例一提供的彩色3D打印方法的打印步骤中内部模型和外部模型颜色打印部分的流程示意图；
图5为本申请实施例一提供的彩色3D打印方法的三维原始模型的结构示意图；
图6为本申请实施例一提供的彩色3D打印方法的三维原始模型抽壳形成外部模型和内部模型的结构示意图；
图7为本申请实施例一提供的彩色3D打印方法的外部模型和内部模型的切片处理的结构示意图；
图8为本申请实施例一提供的彩色3D打印方法的包含第一图像信息的第一图像的结构示意图；
图9为本申请实施例一提供的彩色3D打印方法的包含第三图像信息的第三图像的结构示意图；
图10为本申请实施例一提供的彩色3D打印方法的包含第二图像信息的第二图像的结构示意图；
图11为本申请实施例二提供的彩色3D打印方法的流程示意图；
图12为本申请实施例二提供的彩色3D打印方法的切片处理步骤的流程示意图；
图13为本申请实施例二提供的彩色3D打印方法的支撑结构的结构示意图；
图14为本申请实施例二提供的彩色3D打印方法的外部模型、内部模型和支撑结构的切片处理的结构示意图；
图15为本申请实施例四提供的彩色3D打印方法的流程示意图；
图16为本申请实施例四提供的彩色3D打印方法的支撑结构的切片处理步骤的流程示意图；
图17为本申请实施例七提供的彩色3D打印装置的结构示意图；
图18为本申请实施例八提供的终端设备的结构示意图。
附图标记说明：
1-三维原始模型；
11-内部模型；
12-外部模型；
13-背景区域；
2-支撑结构；
20-彩色3D打印装置；
21-获取模块；
22-第一处理模块；
23-第二处理模块；
24-第三处理模块；
25-数据整合模块；
26-打印模块；
30-终端设备；
31-存储器；
32-处理器。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，下面将结合本申请的优选实施例中的附图，对本申请实施例中的技术方案进行更加详细的描述。在附图中，自始至终相同或类似的标号表示相同或类似的部件或具有相同或类似功能的部件。所描述的实施例是本申请一部分实施例，而不是全部的实施例。下面通过参考附图描述的实施例是示例性的，旨在用于解释本申请，而不能理解为对本申请的限制。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护 的范围。下面结合附图对本申请的实施例进行详细说明。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应作广义理解，例如，可以使固定连接，也可以是通过中间媒介间接相连，可以是两个元件内部的连通或者两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
实施例一
图1为本申请实施例一提供的彩色3D打印方法的流程示意图。图2为本申请实施例一提供的彩色3D打印方法的切片处理步骤的流程构示意图。图3为本申请实施例一提供的彩色3D打印方法的打印步骤的流程示意图。图4为本申请实施例一提供的彩色3D打印方法的打印步骤中内部模型和外部模型颜色打印部分的流程示意图。图5为本申请实施例一提供的彩色3D打印方法的三维原始模型的结构示意图。图6为本申请实施例一提供的彩色3D打印方法的三维原始模型抽壳形成外部模型和内部模型的结构示意图。图7为本申请实施例一提供的彩色3D打印方法的外部模型和内部模型的切片处理的结构示意图。图8为本申请实施例一提供的彩色3D打印方法的包含第一图像信息的第一图像的结构示意图。图9为本申请实施例一提供的彩色3D打印方法的包含第三图像信息的第三图像的结构示意图。图10为本申请实施例一提供的彩色3D打印方法的包含第二图像信息的第二图像的结构示意图。
参照图1至图10所示，本申请实施例提供一种彩色3D打印方法，该打印方法包括如下步骤：
S1：获取待打印物体的三维原始模型。
需要说明的是，本实施例中获取待打印物体的三维原始模型1的方法可以是利用扫描装置对待打印物体进行扫描，参照图5所示，图中示出的三维原始模型1即为通过扫描获取的。获取到三维原始模型1后，将该三维原始模型1信息转换成能被处理终端的分层切片软件识别的数据格式，例如转换成立体光刻成型(Stereolithography，简称STL)格式、多边形档案(Polygon File Format，简称PLY)格式、虚拟现实建模语言(Virtual Reality Modeling Language，简称VWRL)格式等，进而得到可被分层切片软件识别的数据格 式的目标物体信息。
S2：对三维原始模型进行抽壳处理，生成三维原始模型的内部模型和外部模型。参照图6所示，在获取到的三维原始模型1中进行抽壳处理，其中抽壳处理的抽壳壁厚需要保证抽壳处理后形成的内部模型11和外部模型12均具有良好的机械强度，抽壳壁厚进一步需要保证外部模型12良好的色彩表达能力，具体的抽壳壁厚可以根据需要设定，本实施例对此并不加以设定。
S3：对内部模型和外部模型进行切片处理，生成与每个打印层一一对应的多个打印数据。打印数据包括表示内部模型在打印层的结构数据，表示外部模型在打印层的颜色数据以及表示外部模型在打印层的结构数据。基于三维原始模型1的格式被转换为可供处理终端分层切片软件识别的数据格式，参照图7所示，利用分层切片软件分别对内部模型11和外部模型12进行切片，可以生成位图图像，然后对每个位图图像进行解析之后得到各层的切片层数据。其中，位图图像为多个像素点组合形成的点阵图像，切片层数据为像素点包含的数据信息，各层的颜色数据为像素点内包含的颜色数据，各层的结构数据为像素点内包含的结构数据。
本实施例一中表示内部模型在打印层的结构数据以第一图像信息形式表示，表示外部模型在打印层的颜色数据以第二图像信息形式表示以及表示外部模型在打印层的结构数据以第三图像信息形式表示。
在步骤S3中，具体可以包括如下分步骤：
S31：对内部模型进行切片处理，生成第一图像信息。
S32：对外部模型进行切片处理，生成第二图像信息和第三图像信息。
参照图8-图10所示，经过抽壳处理和切片处理后，图8示出的为包含内部模型11在打印层的结构数据的第一图像信息，图9示出的为包含外部模型12在打印层的结构数据的第三图像信息，以及图10示出的为包含外部模型12在打印层的颜色数据的第二图像信息。基于内部模型11位于三维原始模型1的内部，因此无需包含打印彩色的三维原始模型1的内部，而外部模型12则包括需要打印彩色的三维原始模型1的表面。
其中，作为一种可实现的实施方式，第一图像信息和第三图像信息可以均为二值图像信息，即图像的像素利用0和1的两个数值表示，二值图像信息则通过0和1组成的二维矩阵表示。而第二图像信息为8位图像信息、16 位图像信息、24位图像信息或32位图像信息，具体的图像信息种类可以根据需要打印的颜色种类确定，例如，24位图像包含由RGB颜色系统形成的(0-255,0-255,0-255)组合的多种数据结构，从而根据所需的颜色指定打印材料。
第一图像信息的结构数据表示内部模型11所需要的打印数据，第二图像信息的颜色数据表示外部模型12所需要打印数据，第三图像信息的结构数据表示外部模型12所需要的打印数据。具体的，打印数据包含材料类型以及是否响应打印工作，例如，二值图像信息的第一图像信息包含0和1两种数据结构，0表示背景图像，不响应打印工作，1表示响应打印工作并且指定由何种材料进行打印；24位图像的第二图像信息中包含由RGB形成的多种数据结构，表示指定打印材料；二值图像信息的第三图像信息中包含0和1两种数据结构，0表示不响应打印工作，1表示响应打印工作。
需要特别指出的是，上述第一图像信息包含的数据结构为1的表示与第三图像信息包含的数据结构为1的表示不同。具体的，上述第一图像信息包含的数据结构为1的表示可以为响应打印工作并且指定材料进行打印，而第三图像信息包含的数据结构为1的表示为响应打印工作，但具体由何种材料进行打印，由第二图像信息中包含的数据结构指定。
由第二图像信息表示打印材料和第三图像信息表示是否响应打印工作的原因在于：本申请的目的是打印全彩色模型，因此第二图像信息为全彩色表示，全彩色表示也包含了背景图像的颜色(例如背景图像为白色，模型也包含白色部分)，因此单纯用第二图像信息无法明确表示是否响应打印工作，由此将导致背景技术中的错打或不打的情况发生；因此本申请增加了第三图像信息来表示是否响应打印工作，区别第二图像信息中与背景图像相同的颜色，可以有效避免发生错打或不打的情况。
S4：根据打印数据对待打印物体进行打印，在该步骤中，具体可以包括如下分步骤：
S401：根据第一图像信息确定内部模型在打印层中的结构，并利用第三图像信息确定外部模型在打印层中的结构。
S402：利用打印材料对打印层中的结构进行打印，在该步骤中，具体可以包括如下分步骤：
S4021：利用预设颜色的打印材料对内部模型在打印层中的结构进行打印。
S4022：利用第二图像信息确定外部模型在打印层中的实际颜色，并利用实际颜色的打印材料对外部模型在打印层中的结构进行打印。
上述预设颜色的打印材料在本实施例中优选为白色，以白色为基层色相较于以其他颜色为基层色，对于以实际颜色打印的外部模型的色彩表达更饱满、鲜明。
需要说明的是，参照图9所示，其示出了图7中其中一个切片层数据的第一图像信息，为二值图像信息，其背景区域13颜色在该图像中表示为白色，对应的数据结构为0，表示该图像中背景部分和外部模型12，内部模型11的结构数据在该图像中表示为黑色部分121，对应的数据结构为1，表示该图像中的内部模型11响应打印工作部分和指定的材料类型。
参照图9所示，其示出了图7中与图8对应的切片层数据的第三图像信息，同样为二值图像信息，其背景区域13颜色在该图像中表示为白色，对应的数据结构为0，此时参考图8中背景区域13部分与内部模型11的结构数据，图8中数据结构为0的数据对应图7中相同位置数据结构为0的数据为背景区域13部分，表示不响应打印工作部分，图8中数据结构为1的数据对应图9中相同位置数据结构为0的数据为内部模型11，表示响应打印工作部分且指定内部材料进行打印；外部模型12的结构数据在图9所示中表示为黑色部分121，对应的数据结构为1，表示该图像中的外部模型12响应打印工作部分。
参照图10所示，其示出了图7中与图8、图9对应的切片层数据的第二图像信息，为24位图像，其背景区域13颜色在该图像中表示为白色，对应的数据结构为(255,255,255)，外部模型12的颜色数据在该图像中表示为白色部分122，对应的数据结构亦为(255,255,255)，此时参考图9中背景区域部分与外部模型12的结构数据，图9中数据结构为0的数据对应图10中相同位置数据结构为(255,255,255)的数据为背景区域13部分，表示不响应打印工作部分，图9中数据结构为1的数据对应图10中相同位置数据结构为(255,255,255)的数据为外部模型12，表示响应打印工作部分且指定白色材料进行打印。
需要注意的是，图10中所示形成轮廓线条在实际图像中应当不存在，此处仅为形象的区分相同的背景颜色与模型颜色，并且对于不同于背景颜色的外部模型12上的颜色可以仅通过第二图像信息中的颜色数据确定是否打印，第三图像信息的作用在于解决第二图像信息中与背景颜色相同时打印与否的问题。因此，若原始模型为非全彩色的，即存在原始模型包含的颜色不同于背景颜色，第三图像信息可省略；若原始模型为全彩色的，即必然存在在原始模型包含的颜色中的一种与背景颜色相同，则第三图像信息是区别该相同颜色中的哪一部分需要打印的关键。
本申请实施例一提供的彩色3D打印方法，通过对获取的待打印物体的三维原始模型进行抽壳处理和切片处理，形成分别包含内部模型结构数据的第一图像信息，包含外部模型结构数据的第三图像信息和颜色数据的第二图像信息。利用上述的图像信息形成的打印数据进行打印，能够在待打印物体的颜色与背景颜色一致时，区别切片图像中的背景颜色和三维原始模型的表面颜色，避免发生不打或错打的现象。
实施例二
图11为本申请实施例二提供的彩色3D打印方法的流程示意图。图12为本申请实施例二提供的彩色3D打印方法的切片处理步骤的流程示意图。图13为本申请实施例二提供的彩色3D打印方法的支撑结构的结构示意图。图14为本申请实施例二提供的彩色3D打印方法的外部模型、内部模型和支撑结构的切片处理的结构示意图。
参照图11至图14所示，在上述实施例一的基础上，本申请实施例二还提供另一种彩色3D打印方法，可以对三维原始模型1中的悬空区域进行打印，具体的方法可以是：
S10：获取待打印物体的三维原始模型。
S20：对三维原始模型进行抽壳处理，生成三维原始模型的内部模型和外部模型。
S40：对内部模型和外部模型进行切片处理，生成与每个打印层一一对应的多个打印数据。
S50：根据打印数据对待打印物体进行打印。
在步骤S40，对内部模型和外部模型进行切片处理，生成与每个打印层 一一对应的多个打印数据步骤之前，还可以包括：
S30：获取三维原始模型内的悬空区域，在悬空区域内建立用于填充悬空区域的支撑结构。
需要说明的是，S10中获取待打印物体的三维原始模型、S20中对三维原始模型进行抽壳处理，生成三维原始模型的内部模型和外部模型、S40中对内部模型和外部模型进行切片处理，生成与每个打印层一一对应的多个打印数据以及S50中根据打印数据对待打印物体进行打印的处理方法分别与实施例一中S1、S2、S3以及S4相同，此处不再一一赘述。进一步地，在本实施例中在对三维原始模型1进行扫描处理和抽壳处理时，可以对三维原始模型1内的悬空区域进行扫描，并在悬空区域建立支撑结构2，该支撑结构2的建立方法可以参照现有技术，例如专利号为US8818544B2、US6907307B2、CN107727189A等提供的支撑结构生成方法，本申请在此不作具体介绍。
进一步地，参照图12至图14所示，在S40中对内部模型和外部模型进行切片处理，生成与每个打印层一一对应的多个打印数据的步骤中，具体可以包括如下分步骤：
S401：对内部模型进行切片处理，生成第一图像信息。
S402：对外部模型进行切片处理，生成第二图像信息和第三图像信息。
S403：对支撑结构进行切片处理，生成第四图像信息。
需要说明的是，S401中对内部模型切片处理以获取第一图像信息和S402中对外部模型切片处理以获取第二图像信息以及第三图像信息的处理方法分别与实施例一种S31和S32相同，此处不再一一赘述。进一步地，本实施例中在为三维原始模型1生成支撑结构2后，将支撑结构2与内部模型11、外部模型12整体同时进行切片处理。此处，与实施例一中的内部模型11和外部模型12切片处理过程类似的，生成以多个点阵图像表示的切片层数据。由支撑结构2生成的点阵图像为支撑结构数据，在本申请实施例中限定为第四图像信息。此处切片层数据还可以包括上述第一图像信息、第二图像信息和第三图像信息，其数据结构如上所述，在此不予赘述。
进一步地，根据打印数据对待打印物体进行打印中，具体可以包括如下分步骤：
S511：根据第一图像信息确定内部模型在打印层中的结构，利用第三图 像信息确定外部模型在打印层中的结构，根据第四图像信息确定支撑结构在打印层中的结构。
S512：利用打印材料对打印层中的结构进行打印。
其中，打印数据中包括的第四图像信息用于表示支撑结构2的结构数据。该第四图像信息优选为二值图像信息。第四图像信息的结构数据表示支撑结构2所需要的打印信息，打印信息包含材料类型以及是否响应打印工作，例如，二值图像信息的第四图像中包含0和1两种数据结构，0表示背景图像，不响应打印工作，1表示响应打印工作并且指定由支撑材料进行打印。
本申请实施例二提供的彩色3D打印方法，通过对获取的待打印物体的三维原始模型进行抽壳处理和切片处理，形成分别包含内部模型结构数据的第一图像信息，包含外部模型结构数据的第三图像信息和颜色数据的第二图像信息，并且通过在三维原始模型的悬空区域建立支撑结构，形成包含支撑结构的结构数据的第四图像信息。利用上述的图像信息形成的打印数据进行打印，能够在待打印物体的颜色与背景颜色一致时，区别切片图像中的背景颜色和三维原始模型的表面颜色，避免发生不打或错打的现象。
实施例三
在上述实施例一和实施例二的基础上，本申请实施例三还提供另一种彩色3D打印方法，可以对第一图像信息、第三图像信息和第四图像信息进行整合处理。
具体的，在实施例二的根据打印数据对待打印物体进行打印之前，还可以包括：
对第一图像信息、第三图像信息和第四图像信息进行整合处理，生成第五图像信息。
需要说明的是，实施例一和实施例二中的二值图像信息的第一图像信息、第三图像信息和第四图像信息的数据存储量均为1bit，且24位图像的第二图像信息的数据存储量为24bit，总数据存储量为27bit，为节省数据存储量，本申请实施例提供的数据处理方法进一步包括整合处理，数据整合处理方法可以参照现有技术，例如专利号为CN103605715B和CN105183824A，本实施例对此不再赘述。
整合处理后的第五图像信息，包含了第一图像信息、第三图像信息和第 四图像信息，第五图像信息可以为四值图像，包含00、01、10、11四种数据结构，分别对四种数据结构赋予不同的表示，例如可以为，00表示背景图像的不响应打印工作，01表示内部模型的响应打印工作并指定材料进行打印，10表示外部模型的响应打印工作，具体打印何种材料通过第二图像信息中的数据指定，11表示支撑结构的响应打印工作并指定支撑材料进行打印。四值图像的第五图像的数据存储量为2bit，结合24位图像的第二图像的数据存储量为24bit，总数据存储量为26bit，相较于未进行整合处理前，有效减少了切片层数据的数据存储量。
进一步地，在实施例三的根据打印数据对待打印物体进行打印的步骤中，具体可以包括以下分步骤：
根据第二图像信息和第五图像信息确定打印层的结构，并利用第二图像信息确定外部模型在打印层中的实际颜色。
利用打印材料对打印层中的结构进行打印，打印材料中包括外部模型在打印层中的实际颜色的打印材料。
需要说明的是，在根据打印数据对待打印物体进行打印时，该打印数据包括第二图像信息和第五图像信息，其中第五图像信息包括内部模型、外部模型以及支撑结构的结构数据，从而确定上述三种结构在打印过程中是否响应打印工作。第二图像信息决定了外部模型在响应打印工作时，所使用打印材料的具体颜色信息。该打印材料可以包括多种颜色，该多种颜色中的至少一种应该对应为外部模型所需要的打印材料的颜色。
本申请实施例三提供的彩色3D打印方法，通过对获取的待打印物体的三维原始模型进行抽壳处理和切片处理，形成分别包含内部模型结构数据的第一图像信息，包含外部模型结构数据的第三图像信息和颜色数据的第二图像信息，并且通过在三维原始模型的悬空区域建立支撑结构，形成包含支撑结构的结构数据的第四图像信息。并通过整合处理的方法将同为二值图像信息的第一图像信息、第三图像信息和第四图像信息整合为第五图像信息，利用上述的图像信息形成的打印数据进行打印，能够在待打印物体的颜色与背景颜色一致时，区别切片图像中的背景颜色和三维原始模型的表面颜色，避免发生不打或错打的现象，并且可以有效减少打印数据的数据存储量。
实施例四
图15为本申请实施例四提供的彩色3D打印方法的流程示意图。图16为本申请实施例四提供的彩色3D打印方法的支撑结构的切片处理步骤的流程示意图。参照图15和图16所示，在上述实施例一和实施例二的基础上，本申请实施例四还提供另一种彩色3D打印方法，实施例四与实施例一和实施例二相比，不同之处在于：打印数据包括多个数据单元，每个数据单元包括不同类型的数据。具体的，本实施例提供的3D彩色打印方法，包括：
S61：获取待打印物体的三维原始模型。
S62：对三维原始模型进行抽壳处理，生成三维原始模型的内部模型和外部模型。
S63：对内部模型和外部模型进行切片处理，生成与每个打印层一一对应的多个打印数据，打印数据包括多个数据单元，数据单元包括表示内部模型在打印层的结构数据，表示外部模型在打印层的颜色数据以及表示外部模型在打印层的结构数据。
S64：根据打印数据对待打印物体进行打印。
其中，对内部模型和外部模型进行切片处理，生成与每个打印层一一对应的多个打印数据，具体包括：对内部模型进行切片处理，生成内部模型的结构数据；对外部模型进行切片处理，生成外部模型的结构数据和颜色数据。
根据打印数据对待打印物体进行打印，具体包括：利用预设颜色的打印材料且根据内部模型的结构数据对内部模型在打印层中的结构进行打印；利用外部模型的颜色数据确定外部模型在打印层中的实际颜色，并利用实际颜色的打印材料且根据外部模型的结构数据对外部模型在打印层中的结构进行打印。
具体的，上述方法中对内部模型和外部模型进行切片处理，不同于实施例一至实施例三，本实施例在切片时不生成位图图像，而是根据内部模型和外部模型上的数据生成打印数据直接存储在数据存储区域中。打印数据包括多个数据单元，数据单元包括颜色数据和结构数据，具体包括打印层的外部模型的颜色数据和结构数据、内部模型的结构数据。
进一步地，对内部模型和外部模型进行切片处理，生成与每个打印层一一对应的多个打印数据之前，还包括：
步骤S71：获取三维原始模型内的悬空区域，在悬空区域内建立用于填充悬空区域的支撑结构。
对内部模型和外部模型进行切片处理，生成与每个打印层一一对应的多个打印数据，具体还包括：
步骤S72：对支撑结构进行切片处理，生成支撑结构在打印层中的结构数据。
需要说明的是，上述内部模型的结构数据、外部模型的颜色数据、外部模型的结构数据和支撑结构的结构数据的表示分别与实施例一、二中第一图像信息的结构数据、第二图像信息的颜色数据、第三图像信息的结构数据和第四图像信息的结构数据的表示一致，或分别与实施例三中第五图像信息的内部模型的结构数据、第二图像信息的颜色数据、第五图像信息的外部模型的结构数据和第五图像信息的支撑结构的结构数据的表示一致，具体参照实施例一、二内容或实施例三内容，本实施例在此不予赘述。
与实施例一至三通过第三图像信息的结构数据来区别第二图像信息中与背景图像相同的颜色类似，本实施例通过数据单元中外部模型的结构数据来区别外部模型与背景图像相同的颜色，具体参照实施例一至三内容，本实施例在此不予赘述。
其中，数据单元中的表示内部模型在打印层的结构数据、表示外部模型在打印层的颜色数据以及表示外部模型在打印层的结构数据分别是来自不同存储区域中的数据。
具体的，表示内部模型在打印层的结构数据以在坐标系统中的相对位置顺序存储在第一存储区域中，表示外部模型在打印层的颜色数据以在坐标系统中的相对位置顺序存储在第二存储区域中，表示外部模型在打印层的结构数据以在坐标系统中的相对位置顺序存储在第三存储区域中，支撑结构的结构数据以在坐标系统中的相对位置顺序存储在存储区域中的第四存储区域中。
并且，在根据打印数据对待打印物体进行打印中，具体还包括：根据预设存储顺序分别获取第一存储区域、第二存储区域、第三存储区域以及 第四存储区域中的打印数据，根据获取的来自不同存储区域中的打印数据对待打印物体进行打印。
需要说明的是，本实施例中所述第一存储区域、第二存储区域、第三存储区域、第四存储区域并不一定是表示先后顺序一、二、三和四，而是用来区分不同的存储区域，其具体顺序可以是第一、第二、第三、第四；或者，可以是第二、第三、第四、第一；或者，可以是第三、第一、第二、第四；或者还可以是其它的排列顺序。本实施例中所述数据单元中的数据存放顺序与所述不同存储区域的排列顺序一致。
作为一个示例，内部模型的结构数据以在坐标系统中的相对位置顺序存储在第一存储区域中，外部模型的颜色数据以在坐标系统中的相对位置顺序存储在第二存储区域中，外部模型的结构数据以在坐标系统中的相对位置顺序存储在第三存储区域中，支撑结构的结构数据以在坐标系统中的相对位置顺序存储在第四存储区域中。所述第一存储区域、第二存储区域、第三存储区域和第四存储区域按顺序排列，在打印时分别提取所述第一存储区域的内部模型结构数据、第二存储区域的外部模型颜色数据、第三存储区域的外部模型结构数据和第四存储区域的支撑结构数据，组成数据单元，根据该数据单元进行打印。比如一个数据单元可以是(0,255,255,255,0,0)，其中，第一个数值0为内部模型的结构数据二进制值，表示非内部模型，存储于第一存储区域中，第二、三、四个数值(255,255,255)为颜色数据RGB值，表示白色，存储于第二存储区域中，第五个数值0为外部模型的结构数据，表示非外部模型，存储于第三存储区域中，第六个数值0为支撑结构的结构数据，表示非支撑结构，存储于第四存储区域中，通过分析该数据单元中不同的数据表示，可确定该数据单元表示为背景颜色；再比如一个数据单元可以是(0,255,255,255,1,0)，其中，第一个数值0为内部模型的结构数据二进制值，表示非内部模型，存储于第一存储区域中，第二、三、四个数值(255,255,255)为颜色数据RGB值，表示白色，存储于第二存储区域中，第五个数值1为外部模型的结构数据，表示外部模型，存储于第三存储区域中，第六个数值0为支撑结构的结构数据，表示非支撑结构，存储于第四存储区域中，通过分析该数据单元中不同的数据表示，可确定该数据单元表示为外部模型。
本申请实施例四提供的彩色3D打印方法，通过对获取的待打印物体的三维原始模型进行抽壳处理和切片处理，形成分别包含内部模型的结构数据、外部模型结构数据和颜色数据、和/或支撑结构的结构数据的数据单元。利用数据单元中的打印数据进行打印，能够在待打印物体的颜色与背景颜色一致时，区别切片图像中的背景颜色和三维原始模型的表面颜色，避免发生不打或错打的现象。
实施例五
在上述实施例四的基础上，本申请实施例五还提供另一种彩色3D打印方法，实施例五与实施例四相比，不同之处在于：本实施例五中内部模型的结构数据、外部模型的颜色数据、外部模型的结构数据和支撑结构的结构数据分别独立的存储在不同的存储区域中。
具体如，内部模型的结构数据存储在第一存储区域中，外部模型的颜色数据存储在第二存储区域中，外部模型的结构数据存储在第三存储区域中，支撑结构的结构数据存储在第四存储区域中，且第一存储区域、第二存储区域、第三存储区域和第四存储区域没有指定的排列顺序。相应的，数据单元中的数据存放顺序可以是变化的，例如，以数据单元(0,255,255,255,1,0)为例，其中，第一个数值0为内部模型的结构数据二进制值，表示非内部模型，存储于第一存储区域中，第二、三、四个数值(255,255,255)为颜色数据RGB值，表示白色，存储于第二存储区域中，第五个数值1为外部模型的结构数据，表示外部模型，存储于第三存储区域中，第六个数值0为支撑结构的结构数据，表示非支撑结构，存储于第四存储区域中，通过分析该数据单元中不同的数据表示，可确定该数据单元表示为外部模型。作为本实施例中表示外部模型的数据单元还可以是(1,255,255,255,0,0)，其中，第一个数值1为外部模型的结构数据二进制值，表示外部模型，存储于第三存储区域中，第二、三、四个数值(255,255,255)为颜色数据RGB值，表示白色，存储于第二存储区域中，第五个数值0为非内部模型的结构数据，表示非内部模型，存储于第一存储区域中，第六个数值0为支撑结构的结构数据，表示非支撑结构，存储于第四存储区域中。使用本实施例中的打印数据存储方式，可实现动态管理以方便存储和提取数据。
本申请实施例五提供的彩色3D打印方法，通过对获取的待打印物体的三维原始模型进行抽壳处理和切片处理，形成分别包含内部模型的结构数据、外部模型结构数据和颜色数据、和/或支撑结构的结构数据的数据单元。利用数据单元中的打印数据进行打印，能够在待打印物体的颜色与背景颜色一致时，区别切片图像中的背景颜色和三维原始模型的表面颜色，避免发生不打或错打的现象。
实施例六
在上述实施例四的基础上，本申请实施例六还提供另一种彩色3D打印方法，实施例六与实施例四相比，不同之处在于：本实施例六中不划分存储区域，内部模型的结构数据、外部模型的颜色数据、外部模型的结构数据和支撑结构的结构数据存储在同一个存储区域中。
具体的，数据单元包括打印层的外部模型的颜色数据和结构数据、内部模型的结构数据、支撑结构的结构数据，单个所述数据单元中的数据可以按指定顺序存储。所述外部模型的颜色数据和结构数据、内部模型的结构数据、以及支撑结构的结构数据以在坐标系统中的相对位置顺序存储在同一个存储区域中。
作为一个示例，数据单元包括外部模型的颜色数据RGB值、外部模型的结构数据二进制值、内部模型的结构数据二进制值以及支撑结构的结构数据二进制值，比如一个数据单元可以是(255,255,255,0,0,0)，其中前三个数值(255,255,255)为颜色数据RGB值，表示白色，第四个数值0为外部模型的结构数据二进制值，表示非外部模型，结合颜色数据RGB值，该数据单元的颜色数据表示背景颜色，第五个数值0为内部模型的结构数据，表示非内部模型，第六个数值0为支撑结构的结构数据，表示非支撑结构，通过分析该数据单元中不同的数据表示，可确定该数据单元表示为背景颜色；再比如一个数据单元可以是(255,255,255,1,0,0)，其中前三个数值(255,255,255)为外部模型的颜色数据RGB值，表示白色，第四个数值1为外部模型的结构数据二进制值，表示为外部模型颜色，第五个数值0为内部模型的结构数据，表示非内部模型，第六个数值0为支撑结构的结构数据，表示非支撑结构，通过分析该数据单元中不同的数据表示，可确定该数据单元表示为外部模型；再比如一个数据单元可以是 (a,b,c,0,1,0)，其中前三个数值(a,b,c)为外部模型的颜色数据RGB值，第四个数值0为外部模型的结构数据二进制值，表示为非外部模型，第五个数值1为内部模型的结构数据，表示内部模型，第六个数值0为支撑结构的结构数据，表示非支撑结构，通过分析该数据单元中不同的数据表示，可确定该数据单元表示为内部模型；再比如一个数据单元可以是(a,b,c,0,0,1)，其中前三个数值(a,b,c)为外部模型的颜色数据RGB值，第四个数值0为外部模型的结构数据二进制值，表示为非外部模型，第五个数值0为内部模型的结构数据，表示非内部模型，第六个数值1为支撑结构的结构数据，表示支撑结构，通过分析该数据单元中不同的数据表示，可确定该数据单元表示为支撑结构。
在上述实施方式的数据单元的外部模型的结构数据、内部模型的结构数据和支撑结构的结构数据中，仅有其中一个为真或三者均为假，其中一个为真时该数据单元表示对应为真的外部模型或内部模型或支撑结构，三者均为假时该数据单元表示背景颜色。例如在上述示例中，数据单元(a,b,c,0,1,0)中的内部模型的结构数据为真，数值(a,b,c)的表示无意义，因为外部模型的结构数据为假，该数据单元表示为非外部模型，同时支撑结构的结构数据为假，因此该数据单元表示为内部模型。数据单元(a,b,c,0,0,1)同理，当内部模型的结构数据和支撑结构的结构数据中其中一个为真时，数值(a,b,c)可以是预设定的任意RGB值。因此，根据数据单元进行打印时，优先判断外部模型的结构数据、内部模型的结构数据和支撑结构的结构数据三者的真假，确定该数据单元表示的是外部模型或内部模型或支撑结构或背景颜色，当该数据单元表示的是外部模型时，再对外部模型的颜色数据进行分析，确定外部模型的颜色。
需要说明的是，上述数值(255,255,255)、(a,b,c)为便于理解而以RGB值形容，实际在存储空间中其应当为二进制数值。
作为本实施例进一步的另一种实施方式，可以在本实施例的上述实施方式中对打印数据进行分段式存储，动态管理以方便存储和提取数据。
本实施例区别外部模型的颜色与背景图像的方式与前述实施例一至三类似，均是通过外部模型的结构数据结合外部模型的颜色数据进行区别，不同在于实施例一至实施例三是将切片处理后的数据以图像形式存储，而 本实施例是直接将切片处理后的数据存储在存储空间。
本申请实施例六提供的彩色3D打印方法，通过对获取的待打印物体的三维原始模型进行抽壳处理和切片处理，形成分别包含内部模型的结构数据、外部模型结构数据和颜色数据、和/或支撑结构的结构数据的数据单元。利用上述的数据单元中的打印数据进行打印，能够在待打印物体的颜色与背景颜色一致时，区别切片图像中的背景颜色和三维原始模型的表面颜色，避免发生不打或错打的现象。
实施例七
图17为本申请实施例七提供的彩色3D打印装置的结构示意图。参照图17所示，在上述实施例一至实施例六的基础上，本申请实施例七还提供一种彩色3D打印装置20，包括：
获取模块21，用于获取待打印物体的三维原始模型。该获取模型在获取三维原始模型时可以通过扫描待打印物体的方式实现，扫描后的三维原始模型信息可以进行格式转换，从而生成可以被分层切片软件识别的数据格式，以为切片处理过程做准备。
第一处理模块22，用于对三维原始模型进行抽壳处理，生成三维原始模型的内部模型和外部模型。本实施例提供的彩色3D打印装置20是对三维原始模型的内部结构和外部结构分别打印，最终获得完整的待打印物体的打印成品。其中抽壳处理中的抽壳壁厚可以根据需要设定，抽壳壁厚需要保证抽壳处理形成的内部模型和外部模型均具有良好的机械强度。
第二处理模块23，用于对内部模型和外部模型进行切片处理，生成与每个打印层一一对应的多个打印数据，打印数据包括表示内部模型在打印层的结构数据，表示外部模型在打印层的颜色数据以及表示外部模型在打印层的结构数据。
具体地，以图像信息形式表示的结构数据和颜色数据为例来具体说明。打印数据包括用于表示内部模型在打印层的结构数据的第一图像信息，用于表示外部模型在打印层的颜色数据的第二图像信息以及用于表示外部模型在打印层的结构数据的第三图像信息。
本实施例提供的第一图像信息可以决定在内部模型打印时是否响应打印工作，从而确定是否进行内部模型的打印。第三图像信息可以决定外 部模型打印时是否响应打印工作，从而确定是否进行外部模型的打印，同时基于外部模型具有颜色，因此为避免外部模型的颜色与背景颜色一致而导致的错打或不打的问题，本实施例进一步设置包含外部模型颜色的第二图像信息，当第三图像信息决定外部模型进行打印的同时，外部模型的打印材料的颜色由第二图像信息决定，因此可以有效避免外部模型的颜色与背景颜色一致时，发生错打或不打的情况。
进一步地，本实施例提供的彩色3D打印装置20还可以包括第三处理模块24和数据整合模块25。
其中，第三处理模块24用于获取三维原始模型1内的悬空区域，并在悬空区域内建立用于填充悬空区域的支撑结构2。第二处理模块23还用于对支撑结构2进行切片处理，生成第四图像信息。
需要说明的是，基于目前的待打印物体中会有悬空区域，为了保证打印成品与待打印物体的相似度，可以在打印过程中同样打印该悬空区域。在对三维原始模型1进行扫描处理或抽壳处理时，可以对三维原始模型1的悬空区域进行扫描，并在悬空区域内建立填充悬空区域的支撑结构2，该支撑结构2的建立方法可以参照现有技术，本实施例对此并不加以赘述。
并且，建立了包含支撑结构2的三维原始模型1，可以利用第二处理模块23对该支撑结构2进行相同的切片处理，获取包括支撑结构2的结构数据的第四图像信息。
进一步地，为减小数据存储量，该彩色3D打印装置20中的数据整合模块25用于对第一图像信息、第二图像信息和第四图像信息进行整合处理，生成第五图像信息。
打印模块26，用于根据打印数据对待打印物体进行打印。本实施例提供的打印模块在根据上述的打印数据进行打印时，可以对多个打印层逐层打印，从而获得完整的打印成品。
具体的，在第二处理模块23中，用于对内部模型和外部模型进行切片处理，生成与每个打印层一一对应的多个打印数据。以打印数据包括多个数据单元为例进行说明。
打印数据包括多个数据单元，数据单元包括表示内部模型在打印层的结构数据，表示外部模型在打印层的颜色数据以及表示外部模型在打印层 的结构数据。表示内部模型在打印层的结构数据、表示外部模型在打印层的颜色数据以及表示外部模型在打印层的结构数据分别是来自不同存储区域中的数据。
具体的，表示内部模型在打印层的结构数据以在坐标系统中的相对位置顺序存储在第一存储区域中，表示外部模型在打印层的颜色数据以在坐标系统中的相对位置顺序存储在第二存储区域中，表示外部模型在打印层的结构数据以在坐标系统中的相对位置顺序存储在第三存储区域中，支撑结构的结构数据以在坐标系统中的相对位置顺序存储在存储区域中的第四存储区域中。
并且，在打印模块26中，根据预设存储顺序分别获取第一存储区域、第二存储区域、第三存储区域以及第四存储区域中的打印数据，根据获取的来自不同存储区域中的打印数据对待打印物体进行打印。
需要说明的是，本实施例中所述第一存储区域、第二存储区域、第三存储区域、第四存储区域并不一定是表示先后顺序一、二、三和四，而是用来区分不同的存储区域，其具体顺序可以是第一、第二、第三、第四；或者，可以是第二、第三、第四、第一；或者，可以是第三、第一、第二、第四；或者还可以是其它的排列顺序。本实施例中所述数据单元中的数据存放顺序与所述不同存储区域的排列顺序一致。
作为一个示例，内部模型的结构数据以在坐标系统中的相对位置顺序存储在第一存储区域中，外部模型的颜色数据以在坐标系统中的相对位置顺序存储在第二存储区域中，外部模型的结构数据以在坐标系统中的相对位置顺序存储在第三存储区域中，支撑结构的结构数据以在坐标系统中的相对位置顺序存储在第四存储区域中。所述第一存储区域、第二存储区域、第三存储区域和第四存储区域按顺序排列，在打印时分别提取所述第一存储区域的内部模型结构数据、第二存储区域的外部模型颜色数据、第三存储区域的外部模型结构数据和第四存储区域的支撑结构数据，组成数据单元，根据该数据单元进行打印。
具体的，在第二处理模块23中，用于对内部模型和外部模型进行切片处理，生成与每个打印层一一对应的多个打印数据，打印数据包括多个数据单元，以内部模型的结构数据、外部模型的颜色数据、外部模型的结 构数据和支撑结构的结构数据分别独立的存储在不同的存储区域中为例进行说明。
具体如，内部模型的结构数据存储在第一存储区域中，外部模型的颜色数据存储在第二存储区域中，外部模型的结构数据存储在第三存储区域中，支撑结构的结构数据存储在第四存储区域中，且第一存储区域、第二存储区域、第三存储区域和第四存储区域没有指定的排列顺序。相应的，数据单元中的数据存放顺序可以是变化的。使用本实施例中的打印数据存储方式，可实现动态管理以方便存储和提取数据。
具体的，在第二处理模块23中，用于对内部模型和外部模型进行切片处理，生成与每个打印层一一对应的多个打印数据，打印数据包括多个数据单元，以内部模型的结构数据、外部模型的颜色数据、外部模型的结构数据和支撑结构的结构数据存储在同一个存储区域中为例进行说明。
具体的，数据单元包括打印层的外部模型的颜色数据和结构数据、内部模型的结构数据、支撑结构的结构数据，单个所述数据单元中的数据可以按指定顺序存储。所述外部模型的颜色数据和结构数据、内部模型的结构数据、以及支撑结构的结构数据以在坐标系统中的相对位置顺序存储在同一个存储区域中。
具体的数据单元的构成示例如上述实施例六所示，在此不再赘述。
其他技术特征与实施例一至实施例六相同，并能达到相同的技术效果，在此不再一一赘述。
本申请实施例七提供的彩色3D打印装置，通过对获取的待打印物体的三维原始模型进行抽壳处理和切片处理，形成分别包含内部模型结构数据，外部模型结构数据和颜色数据的打印数据。利用上述打印数据进行打印，能够在待打印物体的颜色与背景颜色一致时，区别切片图像中的背景颜色和三维原始模型的表面颜色，避免发生不打或错打的现象。
实施例八
图18为本申请实施例八提供的终端设备的结构示意图，参照图18所示，在上述实施例一至实施例六的基础上，本申请实施例八还提供一种终端设备30，包括：存储器31、处理器32以及存储在存储器31上并可在处理器32上运行的计算机程序，处理器32运行计算机程序时实现如上述 的彩色3D打印方法。
本申请实施例中的终端设备在工作时，处理器32调用存储在存储器31上的计算机程序，从而完成计算机程序中的彩色3D打印方法。存储器31可以包括但不限于：随机存取存储器(random access memory，RAM)、闪存、只读存储器(Read-Only Memory，ROM)、可擦除可编程只读存储器(Erasable Programmable Read Only Memory，EPROM)存储器、硬盘、或本领域已知的任何其他形式的存储介质。
处理器32，其硬件可以是能够实现具体功能的通用处理器、数字信号处理器(Digital Signal Processing，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现场可编程门阵列(Field－Programmable Gate Array，FPGA)或其他可编程逻辑器件、分立门或晶体管逻辑器件、分立硬件组件或以上这些硬件的组合。作为一种变化，还可以通过计算设备的组合实现，例如，DSP和微处理器的组合、多个微处理器的组合、与DSP通信结合的一个或者多个微处理器的组合等。
在实际应用本方案时，存储器31可以与处理器32集成在一起，按照存储器31作为处理器32的组成部分的方式进行设置，或者，将存储器31与处理器32均设置于专用集成电路(ASIC)上。
其他技术特征与实施例一至实施例六相同，并能达到相同的技术效果，在此不再一一赘述。
本申请实施例八提供的终端设备，通过对获取的待打印物体的三维原始模型进行抽壳处理和切片处理，形成分别包含内部模型结构数据的打印数据，包含外部模型结构数据和颜色数据的打印数据。利用上述打印数据进行打印，能够在待打印物体的颜色与背景颜色一致时，区别切片图像中的背景颜色和三维原始模型的表面颜色，避免发生不打或错打的现象。
实施例九
在上述实施例一至实施例八的基础上，本申请实施例九提供一种计算机可读存储介质。具体的，该计算机可读存储介质上存储有计算机程序，计算机程序被处理器执行时实现如上述的彩色3D打印方法。
其中，该计算机可读存储介质可以为硬盘、U盘、光盘或者其他具有 存储空间的装置等。
其他技术特征与实施例一至实施例八相同，并能达到相同的技术效果，在此不再一一赘述。
本申请实施例九提供的计算机可读存储介质，通过对获取的待打印物体的三维原始模型进行抽壳处理和切片处理，形成分别包含内部模型结构数据的打印数据，包含外部模型结构数据和颜色数据的打印数据。利用上述的图像信息形成的打印数据进行打印，能够在待打印物体的颜色与背景颜色一致时，区别切片图像中的背景颜色和三维原始模型的表面颜色，避免发生不打或错打的现象。
本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”、“第三”、“第四”等(如果存在)是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的本申请的实施例例如能够以除了在这里图示或描述的那些以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
本领域普通技术人员可以理解：实现上述各方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成。前述的程序可以存储于一计算机可读取存储介质中。该程序在执行时，执行包括上述各方法实施例的步骤；而前述的存储介质包括：ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
最后应说明的是：以上各实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述各实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的范围。

Claims (24)

  1. 一种彩色3D打印方法，其特征在于，包括：
    获取待打印物体的三维原始模型；
    对所述三维原始模型进行抽壳处理，生成所述三维原始模型的内部模型和外部模型；
    对所述内部模型和所述外部模型进行切片处理，生成与每个打印层一一对应的多个打印数据，所述打印数据包括表示所述内部模型在所述打印层的结构数据，表示所述外部模型在所述打印层的颜色数据以及表示所述外部模型在所述打印层的结构数据；
    根据所述打印数据对所述待打印物体进行打印。
  2. 根据权利要求1所述的彩色3D打印方法，其特征在于，所述表示所述内部模型在所述打印层的结构数据以第一图像信息形式表示，所述表示所述外部模型在所述打印层的颜色数据以第二图像信息形式表示以及所述表示所述外部模型在所述打印层的结构数据以第三图像信息形式表示。
  3. 根据权利要求2所述的彩色3D打印方法，其特征在于，所述对所述内部模型和所述外部模型进行切片处理，生成与每个打印层一一对应的多个打印数据，具体包括：
    对所述内部模型进行切片处理，生成所述第一图像信息；
    对所述外部模型进行切片处理，生成所述第二图像信息和所述第三图像信息。
  4. 根据权利要求3所述的彩色3D打印方法，其特征在于，所述根据所述打印数据对待打印物体进行打印，具体包括：
    根据所述第一图像信息确定所述内部模型在所述打印层中的结构，并利用所述第三图像信息确定所述外部模型在所述打印层中的结构；
    利用打印材料对所述打印层中的结构进行打印。
  5. 根据权利要求4所述的彩色3D打印方法，其特征在于，所述利用打印材料对所述打印层中的结构进行打印，具体包括：
    利用预设颜色的打印材料对所述内部模型在所述打印层中的结构进行打印；
    利用所述第二图像信息确定所述外部模型在所述打印层中的实际颜色，并利用所述实际颜色的打印材料对所述外部模型在所述打印层中的结构进行打印。
  6. 根据权利要求2-5任一项所述的彩色3D打印方法，其特征在于，所述第一图像信息和所述第三图像信息均为二值图像信息。
  7. 根据权利要求2-5任一项所述的彩色3D打印方法，其特征在于，所述第二图像信息为8位图像信息、16位图像信息、24位图像信息或32位图像信息。
  8. 根据权利要求2或3任一项所述的彩色3D打印方法，其特征在于，所述对所述内部模型和所述外部模型进行切片处理，生成与每个打印层一一对应的多个打印数据之前，还包括：
    获取所述三维原始模型内的悬空区域，在所述悬空区域内建立用于填充所述悬空区域的支撑结构；
    所述对所述内部模型和所述外部模型进行切片处理，生成与每个打印层一一对应的多个打印数据，具体还包括：
    对所述支撑结构进行切片处理，生成第四图像信息。
  9. 根据权利要求8所述的彩色3D打印方法，其特征在于，所述根据所述打印数据对所述待打印物体进行打印，具体包括：
    根据所述第一图像信息确定所述内部模型在所述打印层中的结构，根据所述第三图像信息确定所述外部模型在所述打印层中的结构，根据所述第四图像信息确定所述支撑结构在所述打印层中的结构；
    利用打印材料对所述打印层中的结构进行打印。
  10. 根据权利要求8所述的彩色3D打印方法，其特征在于，在所述根据所述打印数据对所述待打印物体进行打印之前，还包括：
    对所述第一图像信息、所述第三图像信息和所述第四图像信息进行整合处理，生成第五图像信息；
    所述根据所述打印数据对所述待打印物体进行打印，具体包括：
    根据所述第二图像信息和所述第五图像信息确定所述打印层的结构，并利用所述第二图像信息确定所述外部模型在所述打印层中的实际颜色；
    利用打印材料对所述打印层中的结构进行打印，所述打印材料包括所 述外部模型在所述打印层中的实际颜色的打印材料。
  11. 根据权利要求1所述的彩色3D打印方法，其特征在于，所述打印数据包括多个数据单元，所述数据单元包括表示所述内部模型在所述打印层的结构数据，表示所述外部模型在所述打印层的颜色数据以及表示所述外部模型在所述打印层的结构数据。
  12. 根据权利要求11所述的彩色3D打印方法，其特征在于，所述表示所述内部模型在所述打印层的结构数据、表示所述外部模型在所述打印层的颜色数据以及表示所述外部模型在所述打印层的结构数据分别是来自不同存储区域中的数据。
  13. 根据权利要求12所述的彩色3D打印方法，其特征在于，所述表示所述内部模型在所述打印层的结构数据、外部模型在所述打印层的颜色数据和结构数据分别存储在第一存储区域、第二存储区域和第三存储区域中，且所述第一存储区域、第二存储区域和第三存储区域按指定顺序排列；或者，
    所述表示所述内部模型在所述打印层的结构数据、外部模型在所述打印层的颜色数据和结构数据分别存储在第一存储区域、第二存储区域和第三存储区域中，且所述第一存储区域、第二存储区域和第三存储区域之间彼此相互独立。
  14. 根据权利要求11所述的彩色3D打印方法，其特征在于，所述表示所述内部模型在所述打印层的结构数据、外部模型在所述打印层的颜色数据和结构数据以在坐标系统中的相对位置顺序共同存储在同一个存储区域中。
  15. 根据权利要求13所述的彩色3D打印方法，其特征在于，所述根据所述打印数据对所述待打印物体进行打印，具体包括：
    根据预设存储顺序分别获取所述第一存储区域、所述第二存储区域以及所述第三存储区域中的打印数据，根据获取的来自不同存储区域中的所述打印数据对所述待打印物体进行打印。
  16. 根据权利要求14所述的彩色3D打印方法，其特征在于，所述根据所述打印数据对所述待打印物体进行打印，具体包括：
    根据同一个存储区域中预设存储顺序分别获取所述每个数据单元中 的打印数据，根据不同数据单元中的所述打印数据对所述待打印物体进行打印。
  17. 根据权利要求11所述的彩色3D打印方法，其特征在于，所述对所述内部模型和所述外部模型进行切片处理，生成与每个打印层一一对应的多个打印数据，具体包括：
    对所述内部模型进行切片处理，生成所述内部模型的结构数据；
    对所述外部模型进行切片处理，生成所述外部模型的结构数据和颜色数据。
  18. 根据权利要求17所述的彩色3D打印方法，其特征在于，所述根据所述打印数据对所述待打印物体进行打印，具体包括：
    利用预设颜色的打印材料且根据所述内部模型的结构数据对所述内部模型在所述打印层中的结构进行打印；
    利用所述外部模型的颜色数据确定所述外部模型在所述打印层中的实际颜色，并利用所述实际颜色的打印材料且根据所述外部模型的结构数据对所述外部模型在所述打印层中的结构进行打印。
  19. 根据权利要求13或14任一项所述的彩色3D打印方法，其特征在于，所述对所述内部模型和所述外部模型进行切片处理，生成与每个打印层一一对应的多个打印数据之前，还包括：
    获取所述三维原始模型内的悬空区域，在所述悬空区域内建立用于填充所述悬空区域的支撑结构；
    所述对所述内部模型和所述外部模型进行切片处理，生成与每个打印层一一对应的多个打印数据，具体还包括：
    对所述支撑结构进行切片处理，生成所述支撑结构在所述打印层中的结构数据，所述支撑结构的结构数据以在坐标系统中的相对位置顺序存储在第四存储区域中或者所述支撑结构的结构数据与所述内部模型的结构数据、外部模型的颜色数据和结构数据以在坐标系统中的相对位置顺序共同存储在同一个存储区域中。
  20. 一种彩色3D打印装置，其特征在于，包括：
    获取模块，用于获取待打印物体的三维原始模型；
    第一处理模块，用于对所述三维原始模型进行抽壳处理，生成所述三 维原始模型的内部模型和外部模型；
    第二处理模块，用于对所述内部模型和所述外部模型进行切片处理，生成与每个打印层一一对应的多个打印数据，所述打印数据包括表示所述内部模型在所述打印层的结构数据，表示所述外部模型在所述打印层的颜色数据以及表示所述外部模型在所述打印层的结构数据；
    打印模块，用于根据所述打印数据对所述待打印物体进行打印。
  21. 根据权利要求20所述的彩色3D打印装置，其特征在于，还包括第三处理模块，用于获取所述三维原始模型内的悬空区域，并在所述悬空区域内建立用于填充所述悬空区域的支撑结构；
    所述第二处理模块，还用于对所述支撑结构进行切片处理，生成第四图像信息或支撑结构的结构数据。
  22. 根据权利要求21所述的彩色3D打印装置，其特征在于，还包括数据整合模块，用于对第一图像信息、第三图像信息和第四图像信息进行整合处理，生成第五图像信息。
  23. 一种终端设备，其特征在于，包括：存储器、处理器以及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述处理器运行所述计算机程序时实现如权利要求1-19中任一项所述的彩色3D打印方法。
  24. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质存储有计算机程序，计算机程序被处理器执行时实现如权利要求1-19中任一项所述的彩色3D打印方法。
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