Rotating Data Acquisition Device for Wide-Coverage Depth Correction

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Solution Overview

Problem

Existing three-dimensional reconstruction technologies using depth cameras have limited depth range and accuracy, particularly in open environments, leading to significant depth errors and unsuitable data for outdoor scenes.

Innovation Solution

A data acquisition device with a rotating component, first and second ranging components, and an image acquisition component that rotates in different directions to collect high-precision depth information and image data, utilizing laser radars for wide coverage and a high-precision ranging component for error correction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If depth cameras are used to acquire images and depth information, then three-dimensional scene data can be obtained, but the depth range is limited and depth error is relatively large

Engineering Contradiction:

Improvedepth accuracyVSAvoiddepth range

Core Design Contradiction:

Measurement precisionVSAdaptability or versatility

Solution Approach 1:

The patent divides the ranging function into multiple specialized components: a first ranging component for wide-coverage rough measurement and a second ranging component for high-precision measurement. This segmentation allows each component to be optimized for its specific function, resolving the contradiction between measurement precision and adaptability by having different components handle different aspects of the measurement task.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces a second ranging component that operates in a different measurement dimension or mode compared to the first ranging component. The first ranging component provides broad coverage while the second ranging component provides high-precision measurements, effectively adding another dimension to the measurement capability and resolving the contradiction between depth range and depth accuracy.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Area of stationary object

If multiple depth cameras are equipped for omnidirectional coverage, then wide-coverage data can be acquired, but the number of acquisition points increases and cost increases

Engineering Contradiction:

Improvecoverage areaVSAvoidnumber of acquisition points

Core Design Contradiction:

Area of stationary objectVSDevice complexity

Solution Approach 1:

The first ranging component is designed to perform omnidirectional rough measurement, covering a wide area with a single component. This multi-functional design eliminates the need for multiple specialized depth cameras positioned at different acquisition points, thereby reducing device complexity while maintaining wide coverage capability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Measurement precision

If multiple ranging components are used for error correction, then measurement precision is improved, but device complexity increases

Engineering Contradiction:

Improveranging accuracyVSAvoidnumber of ranging components

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent applies local quality by having the second ranging component focus on specific high-precision measurement tasks where error correction is most needed, while the first ranging component handles broad coverage. This localized specialization allows precision improvement without requiring multiple high-precision components throughout the entire system, thus managing device complexity.

Inventive Principle:

Principle #3Local quality

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The solution provides high-precision, wide-coverage three-dimensional scene data acquisition at a lower cost by reducing the number of acquisition points and correcting depth errors, enabling accurate reconstruction of open environments.

Implementation Method 1

a first ranging component configured to rotate in the first direction along with the data acquisition device, rotate in a second direction, and measure first ranging data

Methodology Applied

Scientific EffectTime of flight: Time of Flight

Implementation Method 2

utilizing laser radars for wide coverage

Methodology Applied

Scientific EffectLaser: Laser

Data Source

PatentUS12405107B2Data acquisition device, data correction method and apparatus, and electronic device

Publication Date: 2025.09.02 ALIBABA GROUP HOLDING LTD

AI summary

Embodiments of the present disclosure disclose a data acquisition device, a data correction method and apparatus, and an electronic device. The data acquisition device includes: a rotation component, a first ranging component, and an image acquisition component. The rotation component is configured to drive the data acquisition device to rotate in a first direction. The first ranging component is configured to rotate in the first direction along with the data acquisition device, to rotate in a second direction, and to measure first ranging data. The first direction is different from the second direction. The image acquisition component is configured to rotate in the first direction along with the data acquisition device, and to acquire image data in a three-dimensional scene.