基于Bezier曲线的透视投影非线性放大方法研究

Study of Nonlinear Magnification Method Based on Bezier Transformation

传统的放大方式破坏了图像的连续性,不能有效保持感兴趣区域与全局信息的完整性.本文提出一种新的基于Bezier曲线的透视投影非线性放大方法.该方法在增强局部信息,保持全局上下文关系的同时,可调节非线性放大区域的弯曲程度,进而满足人眼不同的视觉要求.新方法的提出,为高效快速地完成目标判读等目视解译任务,提供了一种有效的手段.

The traditional magnification method, which destroys the continuum of the magnification region with non-magnification region, is not able to keep local detail and global context. A new nonlinear magnification method is proposed in this paper. The new method produces the effect of nonlinear magnification based on perspective projection and the curve is used as drop-off function. So the new method enhances the local information and meanwhile keeps the global context. It provides different representation by adjusting the distortion degree of nonlinear magnification especially. In this way, image interpretation and target recognition can be performed effectively.