Reconstructing Dynamic 3D Models with Small Data by Integrating Position-Based Dynamics and PDE-Based Modelling

Fang, Junheng; Chaudhry, Ehtzaz; Iglesias, Andrés; Macey, Jon; You, Lihua; Zhang, Jian Jun

doi:10.3390/math10050821

Cited by 3 publications

(2 citation statements)

References 44 publications

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“…Sehingga animasi bisa diartikan "memberi hidup pada benda mati". Definisi lain dari animasi yaitu menggerakan benda mati seakan memiliki kehidupan, dengan memberikan visual dan karakter pada benda mati dengan tampilan yang cepat dari urutan gambar-gambar untuk menciptakan ilusi gerak (Fang et al, 2022).…”

Section: Pendahuluanunclassified

Pengembangan Media Pembelajaran Animasi Proses Pembuatan Topeng Malang untuk Meningkatkan Pemahaman Siswa Kelas X SMK

Wijaya¹,

Iriaji²,

Prasetyo³

2023

JoLLA

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Pengembangan media animasi Proses Pembuatan Topeng Malang ini dilatarbelakangi oleh susahnya mencontohkan proses pembuatan topeng di kelas pada mata pelajaran seni budaya di SMKN 10 Malang pada kelas X. Pada prakteknya, tidak semua guru dapat mencontohkan proses pembuatan topeng. Dalam proses mengajar guru tidak menggunakan teknologi sebagai alat bantu yang dapat memudahkan guru. Penelitian ini bertujuan mengembangakan media animasi sebagai media pembelajaran seni budaya untuk membantu guru menjelaskan proses pembuatan topeng Malang pada siswa kelas X SMKN 10 Malang. Ketika media selesai dikembangakan, kemudian melalui validasi oleh ahli materi, ahli media, dan siswa untuk mengetahui layak atau tidaknya sebuah media. Metode yang digunakan dalampengembangan ini adalah Research and Development dengan menggunakan model pengembangan ADDIE Melalui proses validasi oleh ahli materi, media, dan siswa secara keseluruhan mendapatkan persentase rata-rata 88 persen. Berdasarkan nilai persentase bisa disimpulkan bahwa media animasi Proses Pembuatan Topeng Malang dinyatakan valid dan dapat digunkana sebagai media pembelajaran seni budaya untuk siswa kelas X SMKN 10 Malang. Kata kunci: media pembelajaran; topeng malang; animasi Teaching Media Development: Animation of Malang Mask Making Process to Improve Tenth Grade Vocational High School Students' Comprehension The development of animation media in Malang’s Mask Making Process is motivated by the difficulty of exemplifying the process of making masks in class on cultural arts subjects at SMKN 10 Malang in class X. In practice, not all teachers can give examples of the process of making masks. In the teaching process the teacher does not use technology as a tool that can facilitate the teacher. This study aims to develop animation media as a medium for learning arts and culture to help teachers explain the process of making Malang masks in class X SMKN 10 Malang. When the media has been developed, then it is validated by material experts, media experts, and students to find out whether a media is feasible. The method used in this development is Research and Development using the ADDIE development model. Through a validation process by material experts, media, and students overall get an average percentage of 88 percent. Based on the percentage value, it can be concluded that the animation media of Malang Mask Making Process is declared valid and can be used as a medium for learning cultural arts for class X students of SMKN 10 Malang. Keywords: learing media; malang’s mask; animation

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Section: Pendahuluanunclassified

Pengembangan Media Pembelajaran Animasi Proses Pembuatan Topeng Malang untuk Meningkatkan Pemahaman Siswa Kelas X SMK

Wijaya¹,

Iriaji²,

Prasetyo³

2023

JoLLA

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“…A dynamic fourth-order ordinary differential equation was used to simulate dynamic skin deformations for character an-imation [10]. Recently, a fourth-order ordinary differential equation for beam bending and a second-order ordinary differential equation representing Newton's second law of motion were combined together to reconstruct dynamic 3D models deformed with position based dynamics [18].…”

Section: Ode-based Geometric Processingmentioning

confidence: 99%

Character Modelling with Sketches and ODE-Based Shape Creation

Li¹,

Fu²,

Bian³

et al. 2023

NMTMA

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Character models have enormous applications in industry. Efficient creation of detailed character models is an important topic. This paper proposes a new and easy-to-use technique to quickly create detailed character models from sketches. The proposed technique consists of two main components: primitive deformer and shape generators. With this technique, 2D silhouette contours of a character model are drawn or extracted from an image or sketch. Then, proper geometric primitives are selected and aligned with the corresponding 2D silhouette contours. After that, a primitive deformer is used to create a base mesh and three shape generators are used to add 3D details to the base mesh. The primitive deformer and three shape generators are developed from ODE-driven deformations. The primitive deformer deforms the aligned geometric primitives to exactly match the 2D silhouette contours in one view plane and obtains a base mesh of a character model consisting of deformed primitives. The shape generators are used to add 3D details to the base mesh by creating local 3D models. The experimental results demonstrate that the new technique can quickly create detailed 3D character models from sketches with few manual operations. The new technique is physics-based and easy to learn and use.

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Fast and Compact Partial Differential Equation (PDE)-Based Dynamic Reconstruction of Extended Position-Based Dynamics (XPBD) Deformation Simulation

Fang,

Xiao,

Zhu

et al. 2024

Mathematics

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Dynamic simulation is widely applied in the real-time and realistic physical simulation field. How to achieve natural dynamic simulation results in real-time with small data sizes is an important and long-standing topic. In this paper, we propose a dynamic reconstruction and interpolation method grounded in physical principles for simulating dynamic deformations. This method replaces the deformation forces of the widely used eXtended Position-Based Dynamics (XPBD), which are traditionally derived from the gradient of the energy potential defined by the constraint function, with the elastic beam bending forces to more accurately represent the underlying deformation physics. By doing so, it establishes a mathematical model based on dynamic partial differential equations (PDE) for reconstruction, which are the differential equations involving both the parametric variable u and the time variable t. This model also considers the inertia forces caused by acceleration. The analytical solution to this model is then integrated with the XPBD framework, built upon Newton’s equations of motion. This integration reduces the number of design variables and data sizes, enhances simulation efficiency, achieves good reconstruction accuracy, and makes deformation simulation more capable. The experiment carried out in this paper demonstrates that deformed shapes at about half of the keyframes simulated by XPBD can be reconstructed by the proposed PDE-based dynamic reconstruction algorithm quickly and accurately with a compact and analytical representation, which outperforms static B-spline-based representation and interpolation, greatly shortens the XPBD simulation time, and represents deformed shapes with much smaller data sizes while maintaining good accuracy. Furthermore, the proposed PDE-based dynamic reconstruction algorithm can generate continuous deformation shapes, which cannot be generated by XPBD, to raise the capacity of deformation simulation.

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Reconstructing Dynamic 3D Models with Small Data by Integrating Position-Based Dynamics and PDE-Based Modelling

Cited by 3 publications

References 44 publications

Pengembangan Media Pembelajaran Animasi Proses Pembuatan Topeng Malang untuk Meningkatkan Pemahaman Siswa Kelas X SMK

Pengembangan Media Pembelajaran Animasi Proses Pembuatan Topeng Malang untuk Meningkatkan Pemahaman Siswa Kelas X SMK

Character Modelling with Sketches and ODE-Based Shape Creation

Fast and Compact Partial Differential Equation (PDE)-Based Dynamic Reconstruction of Extended Position-Based Dynamics (XPBD) Deformation Simulation

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