【作者】 陶俊；

【Author】 Jun Tao (College of Remote Sensing and Information Engineering, Wuhan University,Wuhan 430079)

【机构】 武汉大学遥感信息工程学院；

【摘要】 三维曲面的建模是物体和场景三维重建的重要组成部分。本文提出了一种快捷方便的曲面三维重建及其纹理自动绘制的方法。利用投影器"人为"地给三维曲面加上纹理特征,数码相机同时摄取带有纹理特征的序列影像和不带有投影纹理的曲面真实纹理。利用图像处理的方法进行纹理特征提取,对提取出来的纹理特征作基于结构光的线匹配,通过空间前方交会的方法解算出曲面表面的空间点。利用投影方向与构网平面相互垂直的关系,自动把空间点构成三角网,形成三维模型。运用数码相机定标参数算出相应的纹理坐标,进行自动纹理贴绘。实验及结果证明此方法为全自动地重建三维曲面及绘制其纹理探索出一条可行有效的途径。更多还原

【Abstract】 3D curved surface reconstruction is an important and key step of 3D reconstruction of objects and scenes.The paper proposes a good method to reconstruct curved surface and render its texture.Curved surface is added the texture characteristic by the slide projector projecting.The digital camera takes images with the texture characteristic and without it at the same time.The texture characteristic is extracted out by image processing and is matched by lines match based on the structure illumination.3D coordinates of the characteristic texture can be calculated out by the space forward intersection. According to the vertical relationship between projecting direction and plane for TIN,the TIN is formed automatically and then the model is made finally.Real texture of curved surface is work out by the parameters of the camera and is pasted onto the model automatically.The method provided by the paper is confirmed effectively and practically by the experimental results.更多还原