Spatial Modeling via Manhattan-World Wall Line Detection

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Solution Overview

Problem

Current technologies do not allow customers to intuitively view information about spaces like factories or residential housing without physically visiting, making it time-consuming and effort-intensive.

Innovation Solution

Methods and apparatuses for spatial modeling that acquire panoramic images, determine wall lines based on Manhattan-World structural features, and construct three-dimensional models of spaces, enabling customers to view and understand space layouts online.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If physical site visiting is required to view space information, then information accuracy is improved, but time consumption and effort increase

Engineering Contradiction:
Improvespace information accuracyVSAvoidtime consumption
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The patent creates a three-dimensional virtual copy of the physical space by processing panoramic images. This virtual model replicates the spatial structure, wall lines, and layout information, allowing users to explore and understand the space online without physically visiting the site, thus resolving the contradiction between information accuracy and time consumption

Inventive Principle:
Principle #26Copying

2Ease of operation

If three-dimensional model construction is implemented, then online space exploration capability is improved, but technical complexity increases

Engineering Contradiction:
Improveonline space exploration capabilityVSAvoidspatial modeling system complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent segments the complex spatial modeling task into distinct modules: panoramic image acquisition, wall line determination based on Manhattan-World structural features, and three-dimensional model construction. This segmentation allows each component to be optimized independently and simplifies the overall system implementation while enabling effective online space exploration

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces wall line determination as an intermediary step that bridges panoramic images and three-dimensional models. By extracting wall lines and their spatial relationships from images and using Manhattan-World structural constraints, the system creates a simplified representation that facilitates accurate 3D reconstruction without requiring complex direct mapping algorithms

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS11729511B2Method for wall line determination, method, apparatus, and device for spatial modeling
Publication Date: 2023.08.15 ALIBABA GROUP HOLDING LTD
  • US11729511B2 patent drawing
  • US11729511B2 patent drawing
  • US11729511B2 patent drawing

AI summary

Provided in embodiments of the disclosure are methods, apparatuses, and devices for spatial modeling. In one embodiment, a method comprises acquiring a panoramic image captured in a space; determining wall lines in the panoramic image based on Manhattan-World structural features of wall surfaces; and constructing a three-dimensional model for the space based on the wall lines.