Camera Arrangement Angle Deviation Measurement and Correction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for measuring and correcting angular deviations in camera arrangement angles are not cost-effective and do not provide high accuracy, relying on single-time imaging and software corrections which are not reliable.
Innovation Solution
A measurement method and device that image a target object with reference marks multiple times across different visual fields to calculate the rotation angle of the camera's arrangement angle relative to a reference direction, allowing for accurate correction of angular deviations using manual or automatic mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a camera is attached with high accuracy to a shaft to improve measurement precision, then the deviation amount in arrangement angle can be measured more accurately, but the manufacturing cost increases
Solution Approach 1:
The patent replaces the mechanical approach of high-precision camera attachment with a computational approach. Instead of ensuring precise mechanical mounting of the camera to the shaft, the invention uses image processing and coordinate transformation algorithms to calculate and compensate for the deviation angle, thereby achieving accurate measurement without requiring expensive high-precision mechanical assembly
Solution Approach 2:
The patent introduces an intermediary computational process between the camera imaging and the final measurement result. By using coordinate transformation and angle calculation algorithms as intermediaries, the system can derive accurate deviation measurements from ordinary camera images, eliminating the need for expensive high-precision mechanical camera mounting
2Device complexity
If single-time imaging with a single visual field is used to reduce device complexity, then the system becomes simpler and cheaper, but the detection accuracy of arrangement angle deviation is insufficient
Solution Approach 1:
The patent divides the imaging process into multiple segments by capturing images at different positions along the shaft direction. Instead of relying on a single complex high-precision imaging system, the invention uses multiple simple images taken at different locations, then combines them through coordinate transformation to achieve accurate deviation measurement
Solution Approach 2:
The patent transitions from single-point measurement to multi-point measurement along the shaft direction. By capturing images at multiple positions (adding the dimension of position along the shaft) and using coordinate transformation, the system achieves accurate deviation angle measurement without requiring complex single-point imaging equipment
Data Source
AI summary
Provided are a measurement method, and a measurement device that enable measuring a deviation amount in an arrangement angle of a camera, with respect to a reference direction of a shaft of the camera, and that enable correcting a deviation in the arrangement angle at low cost with high accuracy. The measurement method includes: an imaging step of imaging a target object, provided with a reference mark configured to identify a slope-known straight line, a plurality of times in different visual fields; an image processing step of obtaining the straight line identified based on the reference mark where a plurality of the straight lines corresponds to a plurality of the reference marks in images imaged in the different visual fields, respectively; and a calculating step of calculating a rotation angle, as the deviation amount in the arrangement angle, with which a distance between the straight lines becomes zero.