基于点特征的平面图像过渡绘制

VIEW MORPHING OF PLANAR IMAGES WITH POINT STYLE FEATURES

图像过渡绘制的关键之一是确定过渡图像与原始图像间象素的完全对应关系。文中提出了基于点特征的三角网格化对应点自动匹配方法。先从输入的特征点集生成三角特征网格 ,然后根据过渡图像和原始图像的三角网格仿射关系求解所有象素点的对应关系。为提高图像插值的质量 ,还提出了以目标图像为主导的逆向插值算法 ,避免了基于原始图像的三角网格化产生的网格折叠和第一类空洞现象。文中给出了算法的实例验证。

One bottleneck of the view morphing is to determine the full pixel correspondence among the target and source images. This paper proposes a point-feature-based automatic meshy correspondence. It firstly triangulates the feature points into triangular meshes, and then calculats the full correspondence of pixels by affine coordinates of the meshes. A target-dominant reversed interpolation is proposed to avoid the mesh folding problem and the Class-I holes on the interpolated image. Implementation of the method and suggestion of further researches are also given in the paper.