Camera FOV Chart Layout for Simultaneous Angle Measurement
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Solution Overview
Problem
Existing methods for calculating the field of view (FOV) of a camera are inaccurate and time-consuming, particularly when determining diagonal, vertical, and horizontal FOV, and lack a cost-effective system for simultaneous calculation.
Innovation Solution
A system and method using a field of view chart with specific geometric configurations, including a circle, vertical and horizontal portions with rectangles, and a diagonal portion with arcs, to calculate FOV by capturing and processing images to determine distances and angles, enabling simultaneous determination of diagonal, vertical, and horizontal FOV.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional methods using measuring tape or scale are used to calculate FOV, then the calculation can be performed, but accuracy errors occur due to distortion and more time is required to validate diagonal, vertical, and horizontal FOV individually
Solution Approach 1:
The chart is divided into distinct functional segments: a center circle for alignment reference, a vertical portion with rectangles for vertical FOV measurement, a horizontal portion with rectangles for horizontal FOV measurement, and a diagonal portion with arcs for diagonal FOV measurement. This segmentation allows each FOV component to be measured independently and simultaneously through a single image capture, eliminating the need for sequential validation and reducing time loss while maintaining accuracy.
2Productivity
If traditional methods are used to calculate FOV, then the calculation can be performed, but there is no technique available to calculate diagonal, vertical, and horizontal FOV at the same time
Solution Approach 1:
The chart serves multiple functions simultaneously: it provides alignment reference through the center circle, enables vertical FOV measurement through the vertical portion with rectangles, enables horizontal FOV measurement through the horizontal portion with rectangles, and enables diagonal FOV measurement through the diagonal portion with arcs. This multi-functionality allows all three FOV components to be calculated from a single image capture, significantly improving productivity without adding complex measurement devices.
3Measurement precision
If a cost-effective system is needed, then traditional methods can be used, but they lack accuracy and efficiency
Solution Approach 1:
The chart is designed as a simple, inexpensive, disposable or single-use measurement tool that can be printed on standard paper or printed on a flat surface. It requires no electronic components, power supply, or complex manufacturing, yet provides accurate FOV measurement when used with any standard camera. This approach delivers high measurement precision at minimal cost, making it accessible for widespread use.
Data Source
AI summary
A system for calculating field of view is provided. The system includes a field of view chart which includes a circle, a vertical portion, a horizontal portion, and a diagonal portion. The circle with a predefined diameter is positioned at the center of the field of view chart. The vertical portion is positioned at a predefined distance from the circle and includes a plurality of first rectangles positioned at a predefined distance from each other. The horizontal portion is positioned at a pre-defined distance from the circle and the vertical portion and includes a plurality of second rectangles positioned at a predefined distance from each other. The diagonal portion is positioned between the vertical portion and the horizontal portion and at a predefined distance and at a predefined angle from the center circle. The diagonal portion includes a plurality of arcs with a predefined thickness.