便捷式家用投影仪梯形几何校正系统的设计  

Design of a Convenient Trapezoidal Geometry Correction System for Household Projectors

作　　者：陈健锋 洪坤 郭焰芳 张伟[1,3] CHEN Jianfeng;HONG Kun;GUO Yanfang;ZHANG Wei(School of Physics&Optoelectronic Engineering,Guangdong University of Technology,Guangzhou 510006,China;Shenzhen Luckystar Technology Co.,Ltd.,Shenzhen 518109,China;School of Electronics&Electrical Engineering,Zhaoqing University,Zhaoqing 526061,China)

机构地区：[1]广东工业大学物理与光电工程学院,广东广州510006 [2]深圳吉祥星科技股份有限公司,广东深圳518109 [3]肇庆学院电子与电气工程学院,广东肇庆526061

出　　处：《现代信息科技》2024年第9期47-52,共6页Modern Information Technology

基　　金：国家自然科学基金项目(11874124);企业合作项目(KJ-20210310-015)。

摘　　要：针对家用投影仪没有正对成像平面而引发梯形畸变成像问题,设计一款基于DToF测距传感器模块、三轴加速度传感器模块和图像变换的便捷式梯形几何校正系统,实现无须人工干预的梯形畸变画面自动修正。同时引入基于顶点预标定的最大内接矩形算法,辅助畸变校正画面实现面积最大化和长宽比例不失真。实验结果表明,该系统能以低廉的硬件成本、便捷的操作方式完成投影仪在复杂空间姿态下梯形畸变成像的修正工作,增强观影舒适度。A convenient trapezoidal geometric correction system based on DToF ranging sensor module,three-axis acceleration sensor module,and image transformation is designed to address the problem of trapezoidal distortion imaging caused by household projectors as it has not facing imaging plane.This system can achieve automatic correction of trapezoidal distortion screen without manual intervention.At the same time,a maximum inscribed rectangle algorithm based on vertex pre calibration is introduced to assist in achieving maximum area and non distortion aspect ratio in distortion correction screen.The experimental results show that the system can correct the trapezoidal distortion imaging of the projector in complex spatial poses with low hardware cost and convenient operation,enhancing the viewing comfort.

关 键 词：家用投影仪 梯形几何校正 直接飞行时间测距传感器 三轴加速度传感器 图像变换 

分 类 号：TP37[自动化与计算机技术—计算机系统结构]