Optical Instrument Selective Measurement for 3D Data
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Solution Overview
Problem
Current optical instruments for obtaining three-dimensional data of objects are time-consuming and inefficient, especially when high resolution is required, as they need to sequentially scan and measure multiple data points, and processing large amounts of data offline limits real-time analysis and re-visitation of specific features.
Innovation Solution
An optical instrument with a lens arrangement, camera, distance measuring unit, and positioning unit, controlled by a unit that defines areas of interest and adjusts the optical axis for precise and quick measurements of specific object features, reducing the number of measurement pixels and processing time by focusing on areas of interest and using detection algorithms for feature selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sequential scanning of all positions is performed to obtain complete three-dimensional data, then measurement coverage is improved, but measurement time increases significantly
Solution Approach 1:
The patent segments the measurement process into two stages: first, acquiring a complete image of the object; second, selectively measuring only specific positions of interest. This segmentation allows the system to obtain comprehensive visual data while avoiding the time-consuming sequential measurement of all positions, thus resolving the contradiction between complete measurement coverage and measurement time.
Solution Approach 2:
The patent performs preliminary image acquisition before selective measurement. By first capturing the complete image and identifying positions of interest, the system can then focus measurement resources only on relevant areas. This preliminary action enables efficient selective measurement without compromising the completeness of three-dimensional data for the areas that need to be measured.
2Measurement precision
If high resolution is required for detailed measurement, then measurement precision is improved, but the number of data points and processing requirements increase
Solution Approach 1:
The patent applies local quality by providing high measurement density only in specific regions where objects of interest are located, rather than uniformly across the entire field of view. The system dynamically adjusts measurement pixel density based on the detected object positions, creating high resolution where needed and low resolution or no measurement where not required, thus reducing overall data quantity while maintaining necessary precision.
Solution Approach 2:
The patent implements partial action by measuring only the necessary portions of the object rather than all positions. The control unit calculates and selects only the relevant measurement pixels corresponding to detected objects, avoiding unnecessary measurements in empty or irrelevant areas. This partial approach reduces the total amount of data while maintaining sufficient resolution for the actual measurement tasks.
3Measurement precision
If complete area scanning is performed to obtain all position data, then data coverage is improved, but processing time and data volume increase
Solution Approach 1:
The patent extracts only the necessary information from the complete image data. By using detection algorithms to identify objects and their positions, the system can then extract and measure only the relevant three-dimensional data for these objects, discarding unnecessary data from empty or irrelevant areas. This extraction approach maintains adequate data coverage for actual measurement needs while significantly reducing processing time and data volume.
Solution Approach 2:
The patent implements dynamic adjustment of measurement parameters based on detected object positions. The control unit dynamically calculates the optimal set of measurement pixels and adjusts the measurement process accordingly. This dynamic approach allows the system to adapt to different object locations and sizes, maintaining comprehensive data coverage for detected objects while avoiding fixed-time scanning that would process unnecessary data and reduce productivity.
4Measurement precision
If sequential measurement of all positions is performed, then measurement completeness is improved, but the ability to return to features of interest is lost
Solution Approach 1:
The patent performs the preliminary action of capturing the complete image and identifying all object positions before the selective measurement process. This preliminary image acquisition creates a reference map that allows the operator to easily return to and re-measure specific features of interest by simply referring to the displayed image and object positions, eliminating the need to re-scan the entire area.
Solution Approach 2:
The patent implements feedback by displaying the acquired image with detected object positions and measurement pixel markers. This visual feedback allows operators to immediately see what has been measured and where objects are located, enabling easy navigation back to specific features of interest. The feedback mechanism maintains measurement completeness for measured areas while providing operational ease for re-visitation through the displayed reference information.
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 allows for faster and more accurate distance and image data acquisition, enabling real-time processing and immediate re-visitation of features, reducing the time and data required for high-resolution measurements.
Implementation Method 1
a lens arrangement (110) for sighting the object
Implementation Method 2
a distance measuring unit (130) for measuring a distance to the object along a measurement axis (1658) of the distance measuring unit parallel to the optical axis (1646) of the lens arrangement
Data Source
AI summary
An optical instrument and a method for obtaining distance and image information of an object is disclosed to improve the speed and accuracy of data acquisition. The instrument comprises a camera, positioning unit, distance measuring unit, lens arrangement and control unit. The camera acquires images of an object and the control unit defines an area to be scanned as well as an object feature of the object, wherein measurement pixels corresponding to positions on the object may be defined in the area with an increased density of measurement pixels at the object feature. Subsequently, the distances to the object at the selected positions of interest are measured.