3D Sensor Viewpoint Planning for Dead-Angle Measurement Gaps
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Solution Overview
Problem
Existing 3D measurement technologies face challenges with specular reflection and dead angles, particularly with objects made of metal or having complex shapes, leading to incomplete data sets due to unmeasurable regions.
Innovation Solution
An information processing apparatus that determines and adjusts multiple measurement positions and orientations for a 3D sensor, allowing it to move and integrate data sets from various positions to fill in missing regions, enhancing accuracy and reducing unmeasured areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple image capturing apparatuses are used to perform 3D measurement from different positions, then measurement completeness is improved, but device complexity increases due to calibration and timing control requirements
Solution Approach 1:
The patent divides the measurement task into multiple sequential measurements from different positions, where a single 3D measurement sensor captures data from multiple viewpoints rather than using multiple sensors simultaneously. This segmentation approach maintains measurement completeness while reducing device complexity.
Solution Approach 2:
The patent employs dynamic positioning where the 3D measurement sensor is moved to different measurement positions during the measurement process. This dynamic approach allows one sensor to replace multiple fixed sensors, simplifying the overall system configuration while maintaining the ability to capture complete 3D data.
2Device complexity
If a single 3D measurement sensor is used with fixed position, then device complexity is reduced, but measurement completeness deteriorates due to dead angles and specular reflection
Solution Approach 1:
The patent makes the 3D measurement sensor dynamic by moving it to multiple predetermined measurement positions. This dynamic positioning enables the single sensor to overcome dead angles and specular reflection issues that plague fixed-position sensors, thereby maintaining measurement completeness while keeping the device simple.
Solution Approach 2:
The patent changes the spatial parameters (position and orientation) of the 3D measurement sensor across multiple measurement positions. By varying these parameters, the system captures data from different angles, eliminating dead zones and improving measurement completeness without adding complex multi-sensor configurations.
3Measurement precision
If measurements are taken from multiple positions to eliminate dead angles, then measurement completeness is improved, but measurement time increases
Solution Approach 1:
The patent performs preliminary determination of optimal measurement positions and orientations before actual measurement. By pre-calculating the necessary viewpoints in advance, the system minimizes redundant movements and measurements, thereby reducing total measurement time while ensuring complete coverage of the measurement target.
Solution Approach 2:
The patent implements continuous measurement processing where the 3D measurement sensor captures data at multiple positions in a sequential manner without idle time. The measurement process maintains continuous useful action by systematically moving through predetermined positions and immediately processing captured data, reducing overall measurement time.
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
This approach effectively reduces unmeasured regions and increases the accuracy of 3D measurements by integrating data from different positions, improving the overall precision and completeness of the measurement data sets.
Implementation Method 1
A 3D sensor usually measures the distance from the 3D sensor to the surface of an object using reflected light that is reflected by the surface of the object
Data Source
AI summary
An information processing apparatus includes: a determination unit configured to determine a plurality of measurement positions and/or orientations from which a 3D measurement sensor makes three-dimensional measurements; a controller configured to successively move the 3D measurement sensor to the plurality of measurement positions and/or orientations; a measurement unit configured to generate a plurality of 3D measurement data sets through three-dimensional measurement using the 3D measurement sensor at each of the plurality of measurement positions and/or orientations; and a data integration unit configured to integrate the plurality of 3D measurement data sets.