图像失真矫正算法与应用  

Image Deformation Rectifying Algorithm and Application

作　　者：吕冀[1] 汪渤[1] 高洪民[1] 

机构地区：[1]北京理工大学信息科学技术学院,北京100081

出　　处：《微计算机信息》2008年第12期280-281,299,共3页Control & Automation

基　　金：国防科工委基金项目名称(编号不公开)

摘　　要：多通道环幕或穹顶投影系统中,曲面银幕造成投影图像出现非线性失真。由于采用多投影机拼合一幅画面,所以银幕上两投影机投影的拼合区存在图像重叠,如果重叠像素的位置和方向存在偏差将产生重影。使用双线性变换矩阵矫正图像,能够方便地使投影图像的四个端点在视觉平面上呈现为矩形,但边线可能为曲线。然后对每条曲线边用两个二次曲线进行偏差调整,使投影图像在视觉上接近正规矩形,同时消除拼合区的重影实现影像准确融合。The curved surface of the annular or spherical domed screen will bring nonlinear distortion of the projected images in the mul-ticenter projecting system. And all corresponding pixel’s location and direction in overlap areas produced by two projectors must be con-sentaneous to avoid the blur. The projected images transformed by bilinear matrix can be rectified as a rectangle with four curve sides on ocular plane from spectators. And then each curve side is adjusted to reduce warp by two quadratic curves to ...

关 键 词：图像处理 图像变换 图像融合 双线性变换 非线性失真 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]