Projector automatic trapezoid correction method and system and medium

By acquiring the projector's posture and spatial information, establishing a projection geometric model, generating transformation parameters, collecting calibration patterns to obtain geometric parameters, determining calibration errors, and generating compensation parameters, the problem of the automatic keystone correction method for projectors being unable to handle individual differences is solved, achieving high-precision and consistent automatic keystone correction.

CN122002014APending Publication Date: 2026-05-08深セン雅博創新有限公司
0 Cites 2 Cited by

Patent Information

Application Number
CN202610098401.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-23
Publication Date
2026-05-08

AI Technical Summary

Technical Problem

Existing automatic keystone correction methods for projectors cannot effectively address individual differences in production, resulting in unstable correction accuracy and a poor user experience.

Method used

By acquiring the projector's attitude and spatial information, a projection geometric model is established, transformation parameters are generated, trapezoidal correction is performed, calibration patterns are collected to obtain geometric parameters, calibration errors are determined and compensation parameters are generated, and the data is permanently written into the projector's memory to achieve personalized correction.

Benefits of technology

It improves the accuracy and consistency of projector keystone correction, enhances user experience, reduces repair and debugging costs, and provides a data foundation for subsequent quality traceability.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention provides an automatic trapezoid correction method and system for a projector and a medium. The method comprises the following steps: acquiring attitude information of the projector and spatial information of the projector and a projection surface; under the condition that optical emission parameters of the projector are known, a projection geometric model is established based on the attitude information and the space information, and transformation parameters used for projector trapezoidal correction are generated accordingly. And controlling the projector to execute a trapezoidal correction action based on the transformation parameter. And controlling the projector to project a preset calibration pattern, acquiring an image of the calibration pattern by adopting the image acquisition device after the trapezoidal correction action is executed, extracting image features, and acquiring geometric parameters corresponding to the actual projection picture based on the image features. And determining a calibration error based on the difference between the geometric parameter and the transformation parameter, and generating a compensation parameter according to the calibration error. And writing the compensation parameter into the projector so as to compensate the transformation parameter when the projector performs trapezoidal correction. Through the steps, the projector generates a corresponding correction coefficient.
Need to check novelty before this filing date? Find Prior Art