Air spray paint mist state repeatability visual shooting method

CN122244011APending Publication Date: 2026-06-19CHANGCHUN UNIV OF SCI & TECH

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Applications(China)
Current Assignee / Owner: CHANGCHUN UNIV OF SCI & TECH
Filing Date: 2026-05-14
Publication Date: 2026-06-19

AI Technical Summary

Technical Problem

In existing technologies, using a single camera to capture incomplete information about the sprayed paint mist results in the inability to effectively guarantee the repeatability of the sprayed paint mist state.

Method used

A dual-camera imaging system is adopted, a right-handed orthogonal rectangular coordinate system is established, and the intrinsic and extrinsic parameters of the camera are obtained by Zhang Zhengyou's plane calibration method. The paint mist boundary is extracted by combining grayscale and edge detection operators, and the deflection angle and mist cone angle are calculated by using the same cross-section constraint and spray gun rotation to ensure the repeatability of the spraying process.

Benefits of technology

This improved the repeatability and reliability of paint mist state acquisition results during the spraying process, and achieved stability in spraying quality.

✦ Generated by Eureka AI based on patent content.

Smart Images

Figure CN122244011A_ABST

Patent Text Reader

Abstract

A method for repeatable visual imaging of air-sprayed paint mist states, relating to image data processing and computer vision technologies, addresses the problem of existing technologies' inability to effectively capture the repeatability of air-sprayed paint mist states. This method includes: establishing a measurement system; calculating the transformation matrix from the pixel system to the world coordinate system; acquiring and extracting the paint mist state and its boundaries; constraining the projection of the same cross-section of the paint mist state onto two cameras; calculating the boundary intersection and physical length of the paint mist cross-section under a deflection angle; optimizing the spray gun rotation angle; calculating the deflection angle of the paint mist state; calculating the major axis of the paint mist cross-section; calculating the mist cone angle; and determining repeatability. By using dual-camera imaging and applying constraints on the same cross-section, the method ensures that the paint mist image data obtained from multiple shots strictly correspond to the same physical cross-section in three-dimensional space, thereby improving the repeatability of paint mist state acquisition results during air spraying.

Need to check novelty before this filing date? Find Prior Art