A New Keystone Correction Algorithm of the Projector

Yuan Ye
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Abstract

In order to solve the keystone distortion of images when a projector is used. A new algorithm transforming pixel spatial position using edge preserving interpolation is proposed to implement projector keystone correction. First, the scaling factors, the start point positions and the end point positions are calculated according to different rows, then the edge preserving interpolation algorithm are used according to the space positions. Experimental results demonstrate that the algorithm can not only implement keystone correction, but also preserves the edge effectively. It can be used in the chip of projector video processing.
一种新的投影仪梯形校正算法
为了解决使用投影仪时图像失真的关键问题。提出了一种利用边缘保持插值变换像素空间位置的新算法,实现投影keystone校正。首先根据不同的行计算缩放因子、起始点位置和结束点位置,然后根据空间位置使用保边插值算法。实验结果表明,该算法不仅能实现顶点校正,而且能有效地保留边缘。可用于投影机视频处理芯片。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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