arXiv:2511.04029v3 Announce Type: replace 
Abstract: Accurate and efficient voxelized representations of 3D meshes are the foundation of 3D reconstruction and generation. However, existing representations based on iso-surface heavily rely on water-tightening or rendering optimization, which inevitably compromise geometric fidelity. We propose Faithful Contouring, a sparse voxelized representation that supports 2048+ resolutions for arbitrary meshes, requiring neither converting meshes to field functions nor extracting the isosurface during remeshing. It achieves near-lossless fidelity by preserving sharpness and internal structures, even for challenging cases with complex geometry and topology. The proposed method also shows flexibility for texturing, manipulation, and editing. Beyond representation, we design a dual-mode autoencoder for Faithful Contouring, enabling scalable and detail-preserving shape reconstruction. Extensive experiments show that Faithful Contouring surpasses existing methods in accuracy and efficiency for both representation and reconstruction. For direct representation, it achieves distance errors at the $10^{-5}$ level; for mesh reconstruction, it yields a 93\% reduction in Chamfer Distance and a 35\% improvement in F-score over strong baselines, confirming superior fidelity as a representation for 3D learning tasks.

تقدم ورقة بحثية جديدة طريقة Faithful Contouring لإنشاء تمثيلات فوكسي ثلاثية الأبعاد شبه بلا فقدان للشبكات دون الاعتماد على تقنيات السطح الأيزو. تدعم هذه الطريقة أكثر من 2048 دقة وتحافظ على الدقة الهندسية، مما يجعلها مهمة لإعادة البناء والتوليد ثلاثي الأبعاد. تظهر الطريقة دقة متفوقة، حيث تحقق أخطاء مسافة عند مستوى $10^{-5}$ وتقلص بنسبة 93% في مسافة تشامفر، مما يعزز تطبيقها في مجالات متنوعة.

Un nuevo artículo de investigación presenta Faithful Contouring, un método para crear representaciones voxelizadas 3D casi sin pérdida de mallas sin depender de técnicas de iso-superficie. Este enfoque admite más de 2048 resoluciones y mantiene la fidelidad geométrica, lo que es significativo para la reconstrucción y generación 3D. El método muestra una precisión superior, logrando errores de distancia en el nivel de $10^{-5}$ y una reducción del 93% en la distancia de Chamfer, lo que mejora su aplicación en diversos campos.

Un nouvel article de recherche présente Faithful Contouring, une méthode pour créer des représentations voxelisées 3D quasi sans perte de maillages sans recourir aux techniques d'iso-surface. Cette approche prend en charge plus de 2048 résolutions et maintient la fidélité géométrique, ce qui est significatif pour la reconstruction et la génération 3D. La méthode montre une précision supérieure, atteignant des erreurs de distance au niveau de $10^{-5}$ et une réduction de 93% de la distance de Chamfer, ce qui améliore son application dans divers domaines.

A new research paper introduces Faithful Contouring, a method for creating near-lossless 3D voxel representations of meshes without relying on iso-surface techniques. This approach supports over 2048 resolutions and maintains geometric fidelity, making it significant for 3D reconstruction and generation. The method shows superior accuracy, achieving distance errors at the $10^{-5}$ level and a 93% reduction in Chamfer Distance, which enhances its application in various fields.

Faithful Contouring: Near-Lossless 3D Voxel Representation Free from Iso-surface

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