3D Object Reconstruction with Stylized Shape, Texture, and Pose Matching

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Solution Overview

Problem

Existing 3D face reconstruction technologies are limited in expressiveness and realism due to reliance on fixed camera models, lighting conditions, and the scarcity of ground-truth 3D face shapes, requiring specialized devices and alignment with landmarks.

Innovation Solution

A method involving determining shape, texture, and posture features from input images, generating a rendered image, and fine-tuning a 3D object reconstruction model using a parameter tuning model for stylization to achieve high-credibility and stylistically diverse reconstructions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If fixed camera models and lighting conditions are used for 3D face reconstruction, then the reconstruction process is simplified, but the expressiveness and realism of the reconstructed 3D face are limited

Engineering Contradiction:
Improvereconstruction process complexityVSAvoidexpressiveness and realism
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The patent applies dynamics by transitioning from fixed camera models and lighting conditions to dynamic, learnable parameters. The system uses neural networks to adapt camera intrinsics, extrinsics, and lighting conditions during the reconstruction process, allowing the model to adjust to varying input conditions while maintaining computational efficiency through parameter sharing and optimization.

Inventive Principle:
Principle #15Dynamics

2Measurement precision

If ground-truth 3D face shapes are used for training, then the accuracy of reconstruction is improved, but the requirement for specialized devices and landmark alignment increases complexity

Engineering Contradiction:
Improvereconstruction accuracyVSAvoidspecialized devices and alignment requirements
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent uses synthetic 3D face data generated from 3D models as virtual ground-truth for training, eliminating the need for specialized scanning devices and manual landmark alignment. The synthetic data provides accurate ground-truth annotations automatically, and the system learns to map 2D images to 3D representations using this synthesized training data, thereby avoiding the complexity of acquiring real ground-truth data.

Inventive Principle:
Principle #26Copying

3Manufacturing precision

If multiple views and dense landmark alignment are required for training, then the quality of 3D reconstruction is improved, but the difficulty of data collection and processing increases

Engineering Contradiction:
Improve3D reconstruction qualityVSAvoiddata collection and processing difficulty
Core Design Contradiction:
Manufacturing precisionVSDifficulty of detecting and measuring

Solution Approach 1:

The patent implements self-service through self-supervised learning mechanisms where the system automatically generates its own training data and supervision signals. The model uses consistency constraints across multiple views and temporal consistency in video sequences to self-validate and self-correct reconstructions, eliminating the need for manual landmark annotation and reducing data collection complexity while maintaining high reconstruction quality.

Inventive Principle:
Principle #25Self-service

4Ease of manufacture

If conventional 3D reconstruction methods are used, then the process is straightforward, but the variability and stylistic diversity of generated 3D objects are limited

Engineering Contradiction:
Improvereconstruction process simplicityVSAvoidstylistic diversity and variability
Core Design Contradiction:
Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The patent applies parameter changes by introducing style parameters and identity parameters that can be independently controlled and adjusted. The system uses parameter tuning models to modify appearance, texture, and structural characteristics of reconstructed 3D faces, enabling the generation of diverse stylistic variations while maintaining the underlying geometric accuracy. This allows straightforward reconstruction processes to produce highly variable and stylistically diverse results.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS12548274B2Method, device, and computer program product for generating 3D object reconstruction model
Publication Date: 2026.02.10 DELL PROD LP
  • US12548274B2 patent drawing
  • US12548274B2 patent drawing
  • US12548274B2 patent drawing

AI summary

The present disclosure relates to a method, a device, and a computer program product for generating a three-dimensional (3D) object reconstruction model. The method includes acquiring an input image containing a two-dimensional (2D) object. The method further includes determining a shape feature, a texture feature, and a posture feature of the 2D object. The method further includes generating a rendered image based on the shape feature, the texture feature, the posture feature, and the input image. The method further includes generating a 3D object reconstruction model based on the input image and the rendered image, and tuning the 3D object reconstruction model according to a parameter tuning model for stylization. The 3D object reconstruction model generated by this method can realistically reconstruct the 2D object in terms of the shape, the texture, and the posture, so that the 3D object outputted from the model can better match the input image.