Elliptical graph generation method and system based on visual angle of three-dimensional camera

By transforming the three-dimensional surface into the local coordinate system of the elliptical cylinder and performing intersection detection, the visual deviation and computational complexity problems of ellipse drawing in the three-dimensional graphics interface are solved, and high-precision and efficient ellipse graphics generation is achieved, which is suitable for a variety of application scenarios.

CN120689543AActive Publication Date: 2025-09-23BEIJING ADSS DEV
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Patent Information

Application Number
CN202510692613.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-27
Publication Date
2025-09-23
Estimated Expiration
2045-05-27

AI Technical Summary

Technical Problem

Existing technologies for drawing ellipses in three-dimensional graphical interfaces suffer from visual deviations, high computational complexity, strong coordinate system coupling, limited accuracy, high performance overhead, and difficulty in dynamic control. In particular, there is a lack of efficient pixel-level judgment processes under the perspective of a three-dimensional camera.

Method used

By transforming the three-dimensional surface into the local coordinate system of the elliptical cylinder, obtaining user input and defining the elliptical cylinder, and combining it with intersection detection calculation, high-precision and efficient elliptical graphics generation is achieved, including coordinate system conversion, elliptical parameter calculation and intersection detection.

Benefits of technology

It achieves high-precision and high-efficiency generation of elliptical graphics in a three-dimensional perspective, supports arbitrary rotation and translation states, is suitable for complex animations and interactive scenes, balances accuracy and performance, and has anti-interference capabilities and scalability.

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Abstract

The invention provides an elliptic graph generation method and system based on a visual angle of a three-dimensional camera, and the method comprises the steps: converting a three-dimensional curved surface into a local coordinate system of an elliptic cylinder, and obtaining a converted three-dimensional curved surface; acquiring user input, and defining an elliptic cylinder based on the user input and the visual angle of the three-dimensional camera; performing intersection detection calculation on the converted three-dimensional curved surface and the elliptic cylinder, and performing visual output on an intersection result to obtain a final elliptic graph; the method further comprises the following steps: dynamically adjusting intersection conditions in an intersection detection calculation process according to user requirements; wherein the intersection condition comprises a value domain range of the intersection area. According to the coordinate transformation-based three-dimensional elliptic cylinder surface intersection detection method provided by the invention, points in a world coordinate system are converted into a local coordinate system of an elliptic cylinder, and judgment is carried out in combination with an elliptic equation, so that high-precision and high-efficiency geometric recognition and graph generation are realized.
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