Image Pre-Conditioning for Out-of-Focus Projector Blur
Image Pre-Conditioning for Out-of-Focus Projector Blur
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DOI：
10.1109/cvpr.2006.145
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发表时间：
2006-06
期刊：
影响因子：
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通讯作者：
M. S. Brown;Peng Song;Tat-Jen Cham
中科院分区：
文献类型：
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作者：
M. S. Brown;Peng Song;Tat-Jen Cham
我们提出了一种技术，以减少图像模糊所造成的投影图像中的焦点区域。与传统的恢复算法不同，传统的恢复算法对模糊图像进行操作以恢复原始图像，我们的问题的性质要求在模糊之前对原始图像进行校正。为了实现这一点，使用相机来估计投影仪图像上的一系列空间变化的点扩散函数（PSF）。然后，这些离散的PSF用于指导基于维纳滤波的预处理算法，以在投影之前调节图像。实验结果表明，该方法可以有效地改善投影仪离焦模糊带来的视觉效果。
We present a technique to reduce image blur caused by out-of-focus regions in projected imagery. Unlike traditional restoration algorithms that operate on a blurred image to recover the original, the nature of our problem requires that the correction be applied to the original image before blurring. To accomplish this, a camera is used to estimate a series of spatially varying point-spread-functions (PSF) across the projector’s image. These discrete PSFs are then used to guide a pre-processing algorithm based on Wiener filtering to condition the image before projection. Results show that using this technique can help ameliorate the visual effects from out-of-focus projector blur.