Photogrammetric Surface Flatness and Orientation Measurement
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Solution Overview
Problem
Existing methods for determining the flatness and orientation of a surface are labor-intensive and require repeated placement of a straightedge or spirit level across different areas, making it inefficient for comprehensive assessment.
Innovation Solution
The method employs photogrammetric measuring techniques using a surface element with applied markings, where photographs of the surface area are evaluated to determine flatness and orientation relative to the surface element, allowing for efficient evaluation of multiple points and areas with overlapping photogrammetric measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional straightedge and spirit level methods are used to measure surface flatness and orientation, then measurement accuracy can be achieved, but the measurement process becomes labor-intensive and time-consuming
Solution Approach 1:
The patent replaces the mechanical measurement system (straightedge, spirit level, manual positioning) with an optical measurement system (photogrammetric camera, image processing). Multiple surface points are captured simultaneously in photographs, and their coordinates are determined through photogrammetric evaluation, eliminating the need for repeated manual mechanical measurements.
Solution Approach 2:
The patent creates optical copies (photographs) of the surface and reference element, allowing simultaneous measurement of multiple points. The photogrammetric evaluation processes these optical copies to determine the coordinates of numerous surface points and marking points, replacing sequential mechanical point-by-point measurement.
2Area of stationary object
If traditional methods are used to assess the entire surface area, then comprehensive coverage is achieved, but the complexity of repeated measurements across multiple areas increases
Solution Approach 1:
The patent merges the measurement of the entire surface area and reference element into a single photogrammetric setup. Both the surface and reference markings are captured in the same photograph, allowing simultaneous determination of their relative positions and orientations through coordinate evaluation, eliminating the need for separate measurement procedures.
Solution Approach 2:
The patent transitions from one-dimensional linear measurement (straightedge placement) to two-dimensional area measurement through photogrammetric imaging. The camera captures the entire surface area and reference element in a single optical field, allowing comprehensive measurement of multiple points simultaneously through image coordinate evaluation.
3Measurement precision
If multiple photogrammetric measurements are performed for different areas, then complete surface assessment is achieved, but the number of measurements and processing steps increases
Solution Approach 1:
The patent makes the photogrammetric measurement system universal by capturing both surface points and reference element markings in the same photograph. This single measurement setup serves multiple functions: determining surface point coordinates, determining reference point coordinates, and calculating both flatness and orientation deviations simultaneously through a unified evaluation process.
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 enables rapid and comprehensive assessment of surface flatness and orientation, reducing measurement time and effort by evaluating numerous points and areas simultaneously, while maintaining accuracy within a tolerance range.
Implementation Method 1
The entire area or part of the area is defined as the target area. Using a photogrammetric measuring method, the target area is measured by evaluating one or more photographs of the entire area of the target area.
Data Source
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AI summary
The present invention relates to a method for determining the flatness and orientation of a surface (101). The orientation of a surface element (107) is measured using a measuring device (103). The surface element (107) is part of a separate component (102). The orientation of at least a portion of the surface (101) is measured relative to the surface element (107). According to the present invention, markings are applied to the component (102). The flatness of the surface (101) is determined using a photogrammetric measuring method. For this purpose, at least a portion of the surface (101) is measured by one or more photographic images of the entire portion of the surface (101) using a photogrammetric measuring method. Furthermore, the markings on the component (102) are evaluated using a photogrammetric measuring method.The orientation of the surface (101) relative to the orientation of the surface element is determined by the relation of the results of the two photogrammetric measurement methods.