Virtual Object Construction Using 3D Capture and Point Cloud Mapping

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Solution Overview

Problem

Players in sandbox games face challenges in accurately controlling the structure of voxel blocks during manual construction, leading to incomplete or inaccurate object construction.

Innovation Solution

A virtual-environment-based object construction method that uses a camera to capture 3D information of an object, generating a feature point cloud to determine the style of a target object, and filling a region corresponding to the feature point cloud with voxel blocks in a virtual environment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If players manually construct objects using voxel blocks in sandbox games, then they can create custom objects, but the construction accuracy and structural precision are insufficient

Engineering Contradiction:
Improveconstruction accuracyVSAvoidmanual construction difficulty
Core Design Contradiction:
Manufacturing precisionVSEase of operation

Solution Approach 1:

The patent applies the copying principle by capturing real-world objects using a camera to obtain 3D information and generating feature point clouds. These captured objects serve as templates that are then replicated in the virtual environment using voxel blocks, eliminating the need for manual construction while preserving the original object's structural accuracy and geometric details.

Inventive Principle:
Principle #26Copying

2Productivity

If players manually stack voxel blocks to construct objects, then they can create decorative objects and billboards, but the construction process is time-consuming and inefficient

Engineering Contradiction:
Improveobject construction efficiencyVSAvoidconstruction time
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The patent applies preliminary action by pre-capturing 3D information of target objects and generating their feature point clouds before the construction process. This preprocessing step creates a ready-to-use digital model that can be quickly instantiated in the virtual environment, eliminating the time-consuming manual stacking process while enabling rapid object creation.

Inventive Principle:
Principle #10Preliminary action

3Manufacturing precision

If players attempt to control the structure of voxel blocks precisely during manual construction, then they can achieve accurate object shapes, but the operational complexity increases significantly

Engineering Contradiction:
Improvestructural control precisionVSAvoidconstruction control complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent replaces the mechanical manual control system with an automated 3D recognition and mapping system. Instead of requiring players to manually position and control each voxel block, the system automatically captures the object's 3D structure and translates it into voxel block arrangements, substituting complex manual mechanical control with automated computational processing.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

4Shape

If players use voxel blocks classified by color to construct colorful objects, then they can create visually appealing decorative objects, but the construction process becomes more complex

Engineering Contradiction:
Improveobject appearance qualityVSAvoidconstruction process complexity
Core Design Contradiction:
ShapeVSDevice complexity

Solution Approach 1:

The patent applies local quality by capturing the specific color and material properties of different regions of the target object and mapping them to corresponding voxel blocks with matching characteristics. This allows each local region of the constructed object to reflect the original object's specific visual properties, achieving high appearance quality while the system automatically handles the complexity of coordinating multiple colored blocks.

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS12337236B2Virtual-environment-based object construction method and apparatus, computer device, and computer-readable storage medium
Publication Date: 2025.06.24 TENCENT TECHNOLOGY (SHENZHEN) CO LTD
  • US12337236B2 patent drawing
  • US12337236B2 patent drawing
  • US12337236B2 patent drawing

AI summary

A virtual-environment-based object construction method and apparatus, and a computer-readable storage medium are disclosed in this disclosure, relating to the field of virtual environment. Performed by a terminal comprising a camera, the method including: displaying an environment interface; receiving a capture operation being used for acquiring three-dimensional (3D) information of a to-be-acquired object; receiving a position input operation for determining a display position of the target object in the virtual environment; and displaying the target object at the display position in the virtual environment according to the capture operation and the position input operation.