Handheld 3D Scanner Dynamic Scale Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current portable scanners face challenges in efficiently scanning and representing three-dimensional environments, particularly in video gaming applications, where accurate coordinate determination and dynamic scale representation are needed, and existing systems struggle with handling varying speeds and orientations of the scanner.
Innovation Solution
A handheld scanner with a projector and two cameras that record images and generate a three-dimensional point cloud, where the scale and orientation of the video image and point cloud are adjusted based on the scanner's speed and acceleration, and the direction of gravity is defined to enhance scanning accuracy and user guidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the scanner moves at high speed, then productivity is improved, but measurement precision deteriorates
Solution Approach 1:
The patent applies dynamics by making the display scale dynamically adjustable based on scanner movement speed. The control unit detects speed via acceleration sensors and automatically adjusts the representation scale - using larger scales at high speeds to maintain visibility and smaller scales at low speeds for detailed work, thus resolving the contradiction between scanning speed and measurement precision
Solution Approach 2:
The patent changes the display scale parameter according to scanner speed. At high speeds, a larger display scale is used to ensure the scanned environment remains visible and comprehensible, while at low speeds, a smaller scale provides finer detail. This parameter adaptation resolves the contradiction by optimizing the display for each operating condition
2Ease of operation
If the display scale is increased for high speed movement, then ease of operation is improved, but loss of information increases
Solution Approach 1:
The system dynamically adjusts the display scale based on detected scanner speed. During high-speed movement, a larger scale is applied to maintain ease of operation and visibility. During low-speed or stationary phases, the scale reduces to display more detail information. This dynamic adaptation prevents information loss while maintaining operational ease
3Measurement precision
If multiple cameras and processors are used, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent employs two cameras that serve multiple functions: they capture images for three-dimensional coordinate determination and simultaneously provide visual feedback of the scanned environment. This multi-functionality improves measurement precision while minimizing the increase in device complexity by making existing components work for multiple purposes
Data Source
AI summary
A device and method for scanning and measuring an environment is provided. The method includes providing a three-dimensional (3D) measurement device having a controller. Images of the environment are recorded and a 3D scan of the environment is produced with a three-dimensional point cloud. A first movement of the 3D measurement device is determined and then an operating parameter of the 3D measurement device is changed based at least in part on the first movement.