3D Surround Scanner Using Synchronized Camera and Laser
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Solution Overview
Problem
Current three-dimensional surround scanning technologies face challenges in increasing processing speed, accuracy, reducing costs, and improving operation convenience, while achieving novel measurement algorithms.
Innovation Solution
A three-dimensional surround scanning device and method that combines an image acquisition element, a range acquisition element, and a moving mechanism, with a controller to generate three-dimensional model data by synchronizing two-dimensional image acquisition, position signals, and depth information, allowing for efficient reconstruction of scene areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple range measurement techniques (sonar, radar, LiDAR, laser scanner) are used to improve measurement precision, then the device complexity and cost increase
Solution Approach 1:
The patent combines a camera (image acquisition device) with a laser scanner (range measurement device) into an integrated system. The camera and laser scanner are mounted together on a rotating platform, sharing common mounting structures and control systems. This merging reduces device complexity while maintaining high measurement precision through the complementary strengths of both technologies.
Solution Approach 2:
The integrated system performs multiple functions simultaneously: the camera captures visual information for texture and color, the laser scanner measures distance and depth, and together they create comprehensive three-dimensional models. This multi-functionality eliminates the need for separate sonar, radar, and LiDAR systems, reducing overall system complexity while maintaining high measurement accuracy.
2Measurement precision
If multiple reflecting mirrors are used to perform image acquisition from different angles, then the measurement precision improves, but the device complexity increases
Solution Approach 1:
Instead of using multiple fixed mirrors to capture images from different angles simultaneously, the patent employs a dynamic approach where a single camera and laser scanner are mounted on a rotating platform. The system rotates to different angular positions to capture data from multiple viewpoints sequentially. This dynamic solution reduces mechanical complexity while achieving the same measurement precision through temporal multiplexing.
3Manufacturing precision
If range measurement and image acquisition are performed separately, then the processing accuracy improves, but the productivity decreases
Solution Approach 1:
The patent implements synchronous operation of the camera and laser scanner during rotation. Both devices operate continuously and simultaneously, capturing image and range data at the same time for each angular position. This continuous parallel operation maintains high three-dimensional model accuracy through synchronized data acquisition while significantly improving productivity by eliminating sequential processing steps.
Solution Approach 2:
The system performs calibration of the camera and laser scanner beforehand to establish their spatial relationships and coordinate systems. This preliminary calibration ensures that subsequent simultaneous measurements from both devices can be accurately integrated, maintaining manufacturing precision while enabling efficient parallel operation during actual scanning.
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 enables the creation of accurate three-dimensional model data, including point clouds, models with color information, and triangular grid representations, enhancing scanning efficiency and accuracy while reducing operational complexity.
Implementation Method 1
The range acquisition element, when being actuated, for performing back and forth scanning along a direction of the second length, and returning at least one depth information
Implementation Method 2
The range acquisition element... performing back and forth scanning... returning at least one depth information
Data Source
AI summary
A three-dimensional surround scanning device and a method thereof are described, which are adopted to perform surround scanning on a scene area, so as to construct a three-dimensional model. The device includes an image acquisition element, a first moving mechanism, a range acquisition element, and a controller. The controller controls the image acquisition element, the range acquisition element, and the first moving mechanism to perform three-dimensional image acquisition, so as to obtain a two-dimensional image covering the scene area, depth information with three-dimensional coordinates, and corresponding position signals. The controller rearranges and combines the two-dimensional image, position signals, and depth information, so as to construct the three-dimensional model.