Dynamic wearing restoration method and system for ancient clothes

Abstract

The invention discloses a dynamic wearing restoration method and system for ancient clothes. The method comprises the following steps: collecting ancient garment data to obtain a cut-part picture; establishing a human body model according to the human body data of the garment wearer; based on the obtained cut-part picture, establishing a clothing model; the method comprises the following steps: acquiring motion capture data through motion capture equipment, importing the motion capture data into Marveless Designer software, and carrying out cloth dynamic calculation in combination with a human body model and a clothing model to complete dynamic simulation; using Adobe Photoshop software to make a texture map of the clothing, and completing visual optimization of the clothing; dynamic display is achieved through Maxon Cinema 4D software, and high-precision rendering is conducted through a Redshift renderer; the restoration of the dynamic wearing process of the ancient clothes is completed. The three-dimensional dynamic restoration of the ancient clothes is realized, and the dynamic wearing effect of the ancient clothes is truly restored.

Description

Technical Field

[0001] This invention relates to a method and system for recreating the dynamic wearing of ancient clothing, belonging to the field of clothing restoration technology. Background Technology

[0002] Ancient clothing contains rich historical and cultural value, serving as important evidence for understanding the social landscape, technological levels, and cultural exchanges of ancient times. However, due to the passage of time and the influence of preservation conditions, the original form of ancient clothing unearthed through archaeological excavations is difficult to preserve completely. Therefore, how to more accurately restore ancient clothing with the support of modern technology has become an important issue in the field of cultural relic protection and research.

[0003] Currently, virtual restorations of ancient clothing often use software such as CLO3D and Style3D to simulate wearing. Although this restores the wearing state to a certain extent, the restoration results are only static presentations on a two-dimensional plane. In addition, clothing information is limited to images in brochures or limited physical objects displayed in museums, resulting in insufficient information accuracy. Therefore, it is impossible to reproduce the dynamic continuity of clothing during the wearing process.

[0004] Therefore, designing a technical solution suitable for ancient clothing that can restore the dynamic wearing process is an urgent problem to be solved. Summary of the Invention

[0005] The purpose of this invention is to provide a method and system for the dynamic restoration of ancient clothing, which realizes three-dimensional dynamic restoration of ancient clothing and realistically restores the dynamic wearing effect of ancient clothing.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A method for reconstructing the dynamic wearing of ancient clothing, including the following steps: Step 1: Collect data on ancient clothing to obtain pattern diagrams; Step 2: Create a human body model based on the wearer's anatomy data to complete the human body modeling; Step 3: Based on the obtained pattern drawing, create a garment model to complete the garment modeling; Step 4: Obtain motion capture data through motion capture equipment, import the motion capture data into Marvelous Designer software, and combine the human body model and the clothing model to perform dynamic fabric calculations to complete the dynamic simulation; Step 5: Use Adobe Photoshop to create texture maps for the clothing to complete the visual optimization of the clothing; Step Six: Use Maxon Cinema 4D software to achieve dynamic display and use Redshift renderer for high-precision rendering; Step 7: Complete the restoration of the dynamic wearing process of ancient clothing.

[0007] An ancient clothing dynamic wearing restoration system for implementing the aforementioned ancient clothing dynamic wearing restoration method includes: The clothing data acquisition module is used to collect data on ancient clothing in order to obtain pattern diagrams. The human body modeling module is used to create human body models based on the human body data of the person wearing the clothing. The garment modeling module is used to create a garment model based on the obtained pattern drawing; The dynamic simulation module is used to obtain motion capture data through motion capture equipment, and to perform dynamic calculation of the fabric using Marvelous Designer software in combination with the human body model and the clothing model, thereby completing the dynamic simulation. The visual optimization module is used to create clothing texture maps using Adobe Photoshop software to achieve visual optimization of clothing. The dynamic display module is used to achieve dynamic displays using Maxon Cinema 4D software, with high-precision rendering achieved using the Redshift renderer.

[0008] The advantages of this invention are: This invention utilizes motion capture technology combined with 3D human body and clothing modeling technology to achieve 3D dynamic restoration of ancient clothing, maximizing the realistic reproduction of the dynamic wearing effect of ancient clothing. In addition, it objectively records the appearance of ancient clothing in a 3D manner, which is comprehensive, intuitive, and of high scientific value, providing strong scientific evidence for the interpretation of history and culture and for museum exhibitions. Attached Figure Description

[0009] Figure 1 This is a schematic diagram illustrating the implementation process of the method for restoring the dynamic wearing of ancient clothing according to the present invention.

[0010] Figure 2 This is an example image of the dynamic clothing restoration effect achieved through the method of this invention. Detailed Implementation

[0011] like Figure 1 As shown, this invention proposes a method for restoring the dynamic wearing of ancient clothing, which includes the following steps: Step 1: Collect data on ancient clothing to obtain pattern diagrams (2D); Step 2: Based on the anatomy data of the person wearing the clothing (such as the tomb owner), a human body model is created to complete the human body modeling; Step 3: Based on the obtained pattern sketch, create a garment model to complete the garment modeling; Step 4: Obtain motion capture data through motion capture equipment, import the motion capture data into Marvelous Designer software (a well-known 3D clothing design software), and combine the human body model (virtual human body) and clothing model to perform dynamic calculation of the fabric, and complete the dynamic simulation, that is, simulate the dynamic performance of clothing in real wearing scenarios. Step 5: Use Adobe Photoshop to create texture maps for the clothing to complete the visual optimization of the clothing; Step Six: Use Maxon Cinema 4D software (an advanced 3D graphics software developed by MAXON in Germany) to create a dynamic display and use Redshift renderer (a well-known 3D rendering software) for high-precision rendering; Step 7: Complete the restoration of the dynamic wearing process of ancient clothing.

[0012] In step one, to ensure the completeness and accuracy of the restoration, multi-dimensional data collection of the ancient clothing is required. Generally, the collected data includes clothing size information, structural information, pattern detail information, and material attribute information, among which: Size information refers to the measurement data of various parts of the garment, such as the length of the garment, the length of the sleeves, the width of the collar, and the hem, which are used to ensure the accurate proportions of the pattern.

[0013] Structural information includes the shape, size, and sewing structure of the garment pieces (including sewing methods). Special process details, such as the location of seams, slits, and pleats, also need to be noted.

[0014] Pattern details are obtained by high-definition scanning of the patterns and decorations on the surface of the garment to ensure accurate reproduction of the garment's texture.

[0015] Material property information is obtained by testing the physical properties of clothing fabrics, such as thickness, elasticity, coefficient of friction, and color, using relevant testing instruments. This information is used to provide real parameter support for subsequent dynamic fabric calculations.

[0016] After the data collection is completed, the data will be organized into a unified format for use in subsequent clothing modeling and rendering processes.

[0017] In practice, the human body data required for human body modeling can be obtained through actual measurements or calculated based on actual measurement results, without limitations. When creating a human body model, the virtual model should set the following parameters: height, weight, body type, etc.

[0018] Taking a cotton robe unearthed in a certain place as an example, we can discuss the collection of ancient clothing data and human body modeling.

[0019] First, multi-dimensional data was collected on the cotton robe. For example, the collected data showed that the robe's sleeve length was 211.1 cm and the overall length was 114.2 cm. It was made of printed fabric with an inner lining, and no obvious damage or defects were observed. The structural information was complete. The style was a cross-collar with a right-fastening front, without a seam at the waist, and slits on both sides. The collar was a stand-up collar with ties at the armpits and both ends of the collar piece. Two strips were visible at the armpits. The main structure consisted of four parts: the body, sleeves, collar, front opening, and inner opening. The sides of the left and right garment pieces, the sleeve seams, the center front seam of the front opening, and the inner hem of the inner opening all had fabric edges. Techniques such as rolled-up stitching (as seen at the inner hem), backstitching (as seen at the sleeve seams), and flat stitching (as seen at the center front seam) were visible.

[0020] Given that the robe originated from a female coffin and the female corpse was well-preserved, an anthropometric model was created based on the female occupant's body data to more accurately represent the effect of the clothing. The height was determined to be 162.5 cm, and the weight is unknown. Due to dehydration and changes in soft tissue, the measured height may differ from the pre-mortem value. Furthermore, a person's height and weight change from youth to old age. Therefore, the anthropometric data was extrapolated based on the above known information. The virtual model parameters set in the created anthropometric model are: height 162.5 cm, H-shaped body.

[0021] In step three, the garment modeling specifically includes: importing each obtained pattern piece into CLO3D software one by one; simulating the sewing process based on the stitching structure information (usually the sewing method) in the ancient garment data obtained in step one to generate a preliminary 3D garment model; making detailed adjustments to the generated preliminary 3D garment model, including seams and seams, to ensure it meets the requirements of real garment craftsmanship; optimizing the pattern by simulating the shape of the human body when wearing the garment to solve potential fabric overlap problems; and completing the garment model creation.

[0022] Here, the interpenetration problem, also known as the cross-membrane problem, refers to the phenomenon where different parts of the clothing fabric penetrate, overlap, or cross each other due to imperfect physical collision detection, making the clothing model look "unrealistic" or "not in accordance with the laws of physics".

[0023] In practical applications, CLO3D software provides simulations of the physical properties of fabrics, such as softness, elasticity, and drape, which can lay a foundation for subsequent dynamic simulation effects.

[0024] In step four, to simulate the shape of clothing in motion, it is further necessary to combine dynamic capture technology to collect human motion data. Here, dynamic capture technology is a technology that uses sensor systems to acquire motion data of the human body (or object) in the real world and applies it to virtual characters (or objects). This technology uses sensors to capture motion information, such as position, posture, and movement, and then transmits this information to a computer system for analysis and rendering, thereby realizing the dynamic performance of virtual characters (or objects).

[0025] The motion capture equipment used in this invention is not limited to, for example, the optical motion capture system developed by Vicon or the 3D motion capture system developed by Xsens.

[0026] In this invention, motion capture data includes human motion trajectory data and human joint motion data that pre-dynamically display the wearing process, such as the posture data of the human body in different actions such as walking, turning, and jumping.

[0027] In practice, the dynamic calculation of the fabric includes: Based on the weaving structure and fiber characteristics of the fabrics used in ancient clothing, and taking into account parameters such as thickness, weight, and warp and weft density, the closest type of fabric is selected in Marvelous Designer software as the simulated fabric. The simulated fabric is used in clothing models to simulate ancient clothing. In Marvelous Designer software, the physical properties of the selected simulated fabric are adjusted one by one so that the simulated fabric can achieve effects such as drooping, fluttering, and wrinkle rebound during dynamic simulation. The physical properties include tensile stiffness, bending stiffness, shear stiffness, density, coefficient of friction, air resistance, and impact thickness. The motion capture data-driven human body model is imported into a real wearing scene. The collision between the simulated fabric of the clothing model and the surface of the human body model is calculated frame by frame during the dynamic simulation process to eliminate the interlocking problem and jitter phenomenon, and ensure that the simulated fabric stays in contact with the surface of the human body model and performs smoothly during the dynamic simulation process. By adjusting the physical parameters of the simulated fabric, the physical performance of ancient clothing under different movement states is realistically presented, solving the complex details that occur in the dynamic simulation of clothing, such as the draping effect of the fabric when the human body moves upward quickly, the fluttering effect when the human body moves forward quickly, and the wrinkle rebound effect when the human body goes from movement to stillness. Among them, the physical parameters include the stretch coefficient, the damping coefficient, and the wrinkle elasticity coefficient, and the physical performance includes draping, fluttering, and wrinkle rebound. That is, the draping effect of the clothing is presented by adjusting the stretch coefficient, the fluttering effect of the clothing is presented by adjusting the damping coefficient, and the wrinkle rebound effect of the clothing is presented by adjusting the wrinkle elasticity coefficient.

[0028] In practice, the process of creating texture maps includes: first, adjusting the color distribution of the clothing by adjusting the color in the material properties of the clothing model to ensure that it matches the color of the fabric used in ancient clothing; then, adding highlights, shadows, and bump maps to different fabric materials to simulate the texture of the fabric (such as the smoothness of silk, the roughness of cotton and linen); and then refining the edges of the pattern texture through layering to ensure that the texture is still clearly visible when the clothing is viewed up close.

[0029] In practice, step five, which uses Adobe Photoshop to create clothing texture maps, can enhance the realism of the clothing. The created texture maps are then adjusted based on the pattern details in the collected ancient clothing data to optimize the clothing's visual appearance.

[0030] In practical implementation, step six specifically involves using the motion capture data obtained from the motion capture equipment and setting the camera path using Maxon Cinema4D software. This allows for a panoramic view of the clothing being dynamically worn, achieved through trajectory animation. Simultaneously, a lighting model of the realistic wearing scene, such as natural light and stage light, is created using the Redshift renderer. Ideally, the lighting effects are adjusted based on the optical properties of the clothing fabric to enhance the visual realism of the garment, thus achieving high-precision rendering. The final output includes a high-resolution dynamic video and static display images (such as…). Figure 2 This allows for the dynamic display of the texture and details of clothing from different angles and under different lighting conditions.

[0031] In addition, the present invention also proposes an ancient clothing dynamic wearing restoration system for implementing the above-mentioned ancient clothing dynamic wearing restoration method of the present invention, comprising: The clothing data acquisition module is used to collect ancient clothing data to obtain pattern diagrams (two-dimensional). The human body modeling module is used to create human body models based on the human body data of the person wearing the clothing. The garment modeling module is used to create garment models based on the obtained pattern drawings. The dynamic simulation module is used to obtain motion capture data through motion capture equipment, and to realize the dynamic calculation of fabric through Marvelous Designer software in combination with human body models and clothing models to complete the dynamic simulation. The visual optimization module is used to create clothing texture maps using Adobe Photoshop software to achieve visual optimization of clothing. The dynamic display module is used to achieve dynamic displays using Maxon Cinema 4D software, with high-precision rendering achieved using the Redshift renderer.

[0032] In this invention, the techniques not described in detail are well-known techniques. For example, how to obtain pattern diagrams based on clothing data, establish human body models and clothing models, how to obtain motion capture data using motion capture equipment, how to use Maxon Cinema 4D software to animate and display the panoramic effect of clothing in motion, and how to use Redshift renderer to perform high-precision rendering, etc., will not be described in detail here.

[0033] The advantages of this invention are: This invention utilizes motion capture technology combined with 3D human body and clothing modeling technology to achieve 3D dynamic restoration of ancient clothing, maximizing the realistic reproduction of the dynamic wearing effect of ancient clothing. In addition, it objectively records the appearance of ancient clothing in a 3D manner, which is comprehensive, intuitive, and of high scientific value, providing strong scientific evidence for the interpretation of history and culture and for museum exhibitions.

[0034] The above description describes the preferred embodiments of the present invention and the technical principles applied thereto. For those skilled in the art, any obvious changes such as equivalent transformations or simple substitutions based on the technical solutions of the present invention, without departing from the spirit and scope of the present invention, shall fall within the protection scope of the present invention.

Claims

1. A method for restoring the dynamic wearing of ancient clothing, characterized in that, Including the following steps: Step 1: Collect data on ancient clothing to obtain pattern diagrams; Step 2: Create a human body model based on the wearer's anatomy data to complete the human body modeling; Step 3: Based on the obtained pattern drawing, create a garment model to complete the garment modeling; Step 4: Obtain motion capture data through motion capture equipment, import the motion capture data into Marvelous Designer software, and combine the human body model and the clothing model to perform dynamic fabric calculations to complete the dynamic simulation; Step 5: Use Adobe Photoshop to create texture maps for the clothing to complete the visual optimization of the clothing; Step Six: Use Maxon Cinema 4D software to achieve dynamic display and use Redshift renderer for high-precision rendering; Step 7: Complete the restoration of the dynamic wearing process of ancient clothing.

2. The method for restoring the dynamic wearing of ancient clothing as described in claim 1, characterized in that, In step one, the collected ancient clothing data includes clothing size information, structural information, pattern detail information, and material attribute information.

3. The method for restoring the dynamic wearing of ancient clothing as described in claim 1, characterized in that, The garment modeling specifically includes: importing each of the obtained pattern pieces into CLO3D software one by one; simulating the sewing process based on the sewing structure information in the ancient garment data obtained in step one to generate a preliminary 3D garment model; making detailed adjustments to the generated preliminary 3D garment model, including seams and seams; optimizing the pattern by simulating the shape of the human body when wearing the garment to solve possible fabric overlap problems; and completing the establishment of the garment model.

4. The method for restoring the dynamic wearing of ancient clothing as described in claim 1, characterized in that, The motion capture data includes human motion trajectory data and human joint motion data that pre-dynamically display the wearing process.

5. The method for restoring the dynamic wearing of ancient clothing as described in claim 1, characterized in that, The dynamic calculation of the fabric specifically includes: Based on the weaving structure and fiber characteristics of the fabrics used in ancient clothing, and referring to parameters such as thickness, weight, and warp and weft density, the closest type of fabric is selected as the simulation fabric in the Marvelous Designer software. The simulation fabric is used in the clothing model to simulate ancient clothing. In the Marvelous Designer software, the physical properties of the selected simulated fabric are adjusted one by one so that the simulated fabric can achieve drooping, fluttering and wrinkle rebound effects during dynamic simulation. The physical properties include tensile stiffness, bending stiffness, shear stiffness, density, coefficient of friction, air resistance and impact thickness. The human body model driven by the motion capture data is imported into a real wearing scene. The collision between the simulated fabric of the clothing model and the surface of the human body model is calculated frame by frame during the dynamic simulation process to eliminate the interlocking problem and the shaking phenomenon, and to ensure that the simulated fabric stays in contact with the surface of the human body model and performs smoothly during the dynamic simulation process. By adjusting the physical parameters of the simulated fabric, the physical performance of ancient clothing under different movement states is realistically presented. The physical parameters include the tensile coefficient, damping coefficient, and fold elasticity coefficient, and the physical performance includes drooping, fluttering, and fold rebound.

6. The method for restoring the dynamic wearing of ancient clothing as described in claim 1, characterized in that, The process of creating the texture map includes: first, adjusting the color distribution of the clothing through the color in the material attribute information of the clothing model to ensure that it is consistent with the color of the fabric used in ancient clothing; then, adding highlights, shadows and bump maps to different fabric materials to simulate the texture of the fabric; and then, refining the edges of the pattern texture through layering processing to ensure that the texture is still clearly visible when the clothing is observed at close range.

7. The method for restoring the dynamic wearing of ancient clothing as described in claim 1, characterized in that, In step five, the created texture map is used to adjust the texture of the clothing based on the pattern details in the collected ancient clothing data, thereby completing the visual optimization of the clothing.

8. A system for restoring the dynamic wearing of ancient clothing according to any one of claims 1 to 6, characterized in that, include: The clothing data acquisition module is used to collect data on ancient clothing in order to obtain pattern diagrams. The human body modeling module is used to create human body models based on the human body data of the person wearing the clothing. The garment modeling module is used to create a garment model based on the obtained pattern drawing; The dynamic simulation module is used to obtain motion capture data through motion capture equipment, and to perform dynamic calculation of the fabric using Marvelous Designer software in combination with the human body model and the clothing model, thereby completing the dynamic simulation. The visual optimization module is used to create clothing texture maps using Adobe Photoshop software to achieve visual optimization of clothing. The dynamic display module is used to achieve dynamic displays using Maxon Cinema 4D software, with high-precision rendering achieved using the Redshift renderer.

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